Added battery_charger and freq_counter
This commit is contained in:
Michael Moon
parent
2673d7fd8b
commit
1e7bd86fab
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##############################################################################
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# #
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# AVR-GCC skeleton #
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# #
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# by Triffid Hunter #
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# #
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##############################################################################
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##############################################################################
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# #
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# Change these to suit your application #
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# #
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##############################################################################
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PROGRAM = battery_charger
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SOURCES = $(PROGRAM).c ringbuffer.c serial.c lcd.c adc.c
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##############################################################################
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# #
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# Change these to suit your hardware #
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# #
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##############################################################################
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MCU_TARGET = atmega168
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F_CPU = 16000000L
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##############################################################################
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# #
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# These defaults should be ok, change if you need to #
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# #
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##############################################################################
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ARCH = avr-
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OPTIMIZE = -Os
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CFLAGS = -g -Wall -Wstrict-prototypes $(OPTIMIZE) -mmcu=$(MCU_TARGET) -DF_CPU=$(F_CPU) $(DEFS) -std=gnu99 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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LDFLAGS = -Wl,-u,vfprintf -lprintf_min
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CC = $(ARCH)gcc
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OBJDUMP = $(ARCH)objdump
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OBJCOPY = $(ARCH)objcopy
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AVRDUDE = ~/bin/avrdude
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PROGPORT = /dev/arduino
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PROGBAUD = 19200
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OBJ = $(patsubst %.c,%.o,${SOURCES})
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.PHONY: all program clean
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.PRECIOUS: %.o %.elf
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all: $(PROGRAM).hex $(PROGRAM).lst
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program: $(PROGRAM).hex
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stty $(PROGBAUD) raw ignbrk hup < $(PROGPORT)
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$(AVRDUDE) -cstk500v1 -b$(PROGBAUD) -p$(MCU_TARGET) -P$(PROGPORT) -C/etc/avrdude.conf -U flash:w:$^
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stty -hup -echo < $(PROGPORT)
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clean:
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rm -rf *.o *.elf *.lst *.map *.sym *.lss *.eep *.srec *.bin *.hex *.al
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%.o: %.c
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$(CC) -c $(CFLAGS) -Wa,-adhlns=$(<:.c=.al) -o $@ $^
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%.elf: $(OBJ)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
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%.lst: %.elf
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$(OBJDUMP) -h -S $< > $@
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%.hex: %.elf
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$(OBJCOPY) -j .text -j .data -O ihex $< $@
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%.bin: %.elf
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$(OBJCOPY) -j .text -j .data -O binary $< $@
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@ -0,0 +1,56 @@
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#include "adc.h"
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void adc_init(uint8_t vsel)
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{
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PRR &= ~_BV(PRADC);
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ADMUX = (ADMUX & ~(_BV(REFS1) | _BV(REFS0))) | vsel;
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ADCSRA = _BV(ADEN);
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#if F_CPU >= (ADC_MAX_FREQ * 128)
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#error F_CPU is too high for ADC prescaler!
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#elif F_CPU >= (ADC_MAX_FREQ * 64)
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ADCSRA |= _BV(ADPS2) | _BV(ADPS1) | _BV(ADPS0);
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#elif F_CPU >= (ADC_MAX_FREQ * 32)
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ADCSRA |= _BV(ADPS2) | _BV(ADPS1);
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#elif F_CPU >= (ADC_MAX_FREQ * 16)
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ADCSRA |= _BV(ADPS2) | _BV(ADPS0);
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#elif F_CPU >= (ADC_MAX_FREQ * 8)
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ADCSRA |= _BV(ADPS2);
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#elif F_CPU >= (ADC_MAX_FREQ * 4)
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ADCSRA |= _BV(ADPS1) | _BV(ADPS0);
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#elif F_CPU >= (ADC_MAX_FREQ * 2)
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ADCSRA |= _BV(ADPS1);
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#elif F_CPU >= (ADC_MAX_FREQ >> 1)
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ADSRA |= _BV(ADPS0);
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#else
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#error F_CPU is too slow for ADC to run well!
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#endif
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}
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uint16_t adc_read(uint8_t pin)
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{
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adc_start(pin);
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adc_wait();
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return adc_result();
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}
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void adc_start(uint8_t pin)
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{
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ADMUX = (ADMUX & 0xF0) | pin;
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ADCSRA |= _BV(ADSC);
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}
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uint16_t adc_result()
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{
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return ADC;
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}
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uint8_t adc_finished()
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{
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return (ADCSRA & _BV(ADSC))?0xFF:0;
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}
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void adc_wait()
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{
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for (;adc_finished() == 0;);
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}
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#ifndef _ADC_H
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#define _ADC_H
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#include <stdint.h>
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#include <avr/io.h>
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#define VSEL_AREF 0
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#define VSEL_AVCC _BV(REFS0)
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#define VSEL_1V1 _BV(REFS1)
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#define ADC_MAX_FREQ 200000
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void adc_init(uint8_t vsel);
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uint16_t adc_read(uint8_t pin);
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void adc_start(uint8_t pin);
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inline uint16_t adc_result(void);
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uint8_t adc_finished(void);
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void adc_wait(void);
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#endif /* _ADC_H */
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@ -0,0 +1,69 @@
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#include <stddef.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include "serial.h"
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#include "lcd.h"
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// write to lcd function for fdev_setup_stream
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static int lcd_putc_fdev(char c, FILE *stream)
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{
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lcd_putc(c);
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return 0;
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}
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int serial_putc_fdev(char c, FILE *stream)
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{
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serial_writechar((uint8_t) c);
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return 0;
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}
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int serial_getc_fdev(FILE *stream)
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{
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for (;serial_rxchars() == 0;);
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return (int) serial_popchar();
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}
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static FILE lcdo = FDEV_SETUP_STREAM(lcd_putc_fdev, NULL, _FDEV_SETUP_WRITE);
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static FILE serio = FDEV_SETUP_STREAM(serial_putc_fdev, serial_getc_fdev, _FDEV_SETUP_RW);
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int main (void)
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{
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// set up LCD
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lcd_init(LCD_DISP_ON_CURSOR);
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lcd_puts_P("Starting...");
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// set up STDIN/OUT/ERR
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stdin = &serio;
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stdout = &lcdo;
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stderr = &lcdo;
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// set up serial
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serial_init(19200);
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sei();
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lcd_gotoxy(0, 0);
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fprintf(&lcdo, "Battery Charger OK");
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for (;;)
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{
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# switch off all currents
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# check battery presence
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# for (each battery) {
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# check ambient temperature
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# check battery temperature
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# calculate delta T
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# check battery voltage
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# calculate delta V
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# check charge cycle location
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# apply suitable current
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# update screen/indicators
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# }
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# wait
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}
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}
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/****************************************************************************
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Title : HD44780U LCD library
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Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
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File: $Id: lcd.c,v 1.14.2.1 2006/01/29 12:16:41 peter Exp $
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Software: AVR-GCC 3.3
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Target: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
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DESCRIPTION
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Basic routines for interfacing a HD44780U-based text lcd display
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Originally based on Volker Oth's lcd library,
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changed lcd_init(), added additional constants for lcd_command(),
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added 4-bit I/O mode, improved and optimized code.
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Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
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4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
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Memory mapped mode compatible with Kanda STK200, but supports also
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generation of R/W signal through A8 address line.
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USAGE
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See the C include lcd.h file for a description of each function
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*****************************************************************************/
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#include <inttypes.h>
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include "lcd.h"
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/*
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** constants/macros
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*/
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#define DDR(x) (*(&x - 1)) /* address of data direction register of port x */
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#if defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
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/* on ATmega64/128 PINF is on port 0x00 and not 0x60 */
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#define PIN(x) ( &PORTF==&(x) ? _SFR_IO8(0x00) : (*(&x - 2)) )
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#else
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#define PIN(x) (*(&x - 2)) /* address of input register of port x */
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#endif
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#if LCD_IO_MODE
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#define lcd_e_delay() __asm__ __volatile__( "rjmp 1f\n 1:" );
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#define lcd_e_high() LCD_E_PORT |= _BV(LCD_E_PIN);
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#define lcd_e_low() LCD_E_PORT &= ~_BV(LCD_E_PIN);
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#define lcd_e_toggle() toggle_e()
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#define lcd_rw_high() LCD_RW_PORT |= _BV(LCD_RW_PIN)
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#define lcd_rw_low() LCD_RW_PORT &= ~_BV(LCD_RW_PIN)
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#define lcd_rs_high() LCD_RS_PORT |= _BV(LCD_RS_PIN)
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#define lcd_rs_low() LCD_RS_PORT &= ~_BV(LCD_RS_PIN)
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#endif
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#if LCD_IO_MODE
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#if LCD_LINES==1
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#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_1LINE
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#else
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#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_2LINES
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#endif
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#else
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#if LCD_LINES==1
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#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_1LINE
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#else
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#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_2LINES
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#endif
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#endif
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#if LCD_CONTROLLER_KS0073
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#if LCD_LINES==4
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#define KS0073_EXTENDED_FUNCTION_REGISTER_ON 0x24 /* |0|010|0100 4-bit mode extension-bit RE = 1 */
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#define KS0073_EXTENDED_FUNCTION_REGISTER_OFF 0x20 /* |0|000|1001 4 lines mode */
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#define KS0073_4LINES_MODE 0x09 /* |0|001|0000 4-bit mode, extension-bit RE = 0 */
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#endif
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#endif
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/*
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** function prototypes
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*/
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#if LCD_IO_MODE
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static void toggle_e(void);
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#endif
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/*
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** local functions
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*/
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/*************************************************************************
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delay loop for small accurate delays: 16-bit counter, 4 cycles/loop
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*************************************************************************/
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static inline void _delayFourCycles(unsigned int __count)
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{
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if ( __count == 0 )
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__asm__ __volatile__( "rjmp 1f\n 1:" ); // 2 cycles
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else
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__asm__ __volatile__ (
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"1: sbiw %0,1" "\n\t"
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"brne 1b" // 4 cycles/loop
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: "=w" (__count)
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: "0" (__count)
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);
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}
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/*************************************************************************
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delay for a minimum of <us> microseconds
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the number of loops is calculated at compile-time from MCU clock frequency
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*************************************************************************/
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#define delay(us) _delayFourCycles( ( ( 1*(XTAL/4000) )*us)/1000 )
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#if LCD_IO_MODE
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/* toggle Enable Pin to initiate write */
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static void toggle_e(void)
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{
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lcd_e_high();
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lcd_e_delay();
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lcd_e_low();
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}
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#endif
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/*************************************************************************
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Low-level function to write byte to LCD controller
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Input: data byte to write to LCD
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rs 1: write data
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0: write instruction
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Returns: none
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*************************************************************************/
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#if LCD_IO_MODE
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static void lcd_write(uint8_t data,uint8_t rs)
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{
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if (rs) { /* write data (RS=1, RW=0) */
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lcd_rs_high();
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} else { /* write instruction (RS=0, RW=0) */
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lcd_rs_low();
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}
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lcd_rw_low();
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if (
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(&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT)
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&& (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)
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)
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{
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/* configure data pins as output */
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DDR(LCD_DATA0_PORT) |= 0x0F;
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/* output high nibble first */
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LCD_DATA0_PORT = (LCD_DATA0_PORT & 0xF0) | ((data >> 4) & 0x0F);
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lcd_e_toggle();
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/* output low nibble */
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LCD_DATA0_PORT = (LCD_DATA0_PORT & 0xF0) | (data & 0x0F);
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lcd_e_toggle();
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/* all data pins high (inactive) */
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LCD_DATA0_PORT = (LCD_DATA0_PORT & 0xF0) | 0x0F;
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}
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else
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{
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/* configure data pins as output */
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DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
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||||||
|
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||||
|
|
||||||
|
/* output high nibble first */
|
||||||
|
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
if(data & 0x80) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
if(data & 0x40) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
if(data & 0x20) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
if(data & 0x10) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* output low nibble */
|
||||||
|
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
if(data & 0x08) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
if(data & 0x04) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
if(data & 0x02) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
if(data & 0x01) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* all data pins high (inactive) */
|
||||||
|
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
#define lcd_write(d,rs) if (rs) *(volatile uint8_t*)(LCD_IO_DATA) = d; else *(volatile uint8_t*)(LCD_IO_FUNCTION) = d;
|
||||||
|
/* rs==0 -> write instruction to LCD_IO_FUNCTION */
|
||||||
|
/* rs==1 -> write data to LCD_IO_DATA */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Low-level function to read byte from LCD controller
|
||||||
|
Input: rs 1: read data
|
||||||
|
0: read busy flag / address counter
|
||||||
|
Returns: byte read from LCD controller
|
||||||
|
*************************************************************************/
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
static uint8_t lcd_read(uint8_t rs)
|
||||||
|
{
|
||||||
|
uint8_t data;
|
||||||
|
|
||||||
|
if (rs)
|
||||||
|
lcd_rs_high(); /* RS=1: read data */
|
||||||
|
else
|
||||||
|
lcd_rs_low(); /* RS=0: read busy flag */
|
||||||
|
lcd_rw_high(); /* RW=1 read mode */
|
||||||
|
|
||||||
|
if (
|
||||||
|
(&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT)
|
||||||
|
&& (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)
|
||||||
|
)
|
||||||
|
{
|
||||||
|
DDR(LCD_DATA0_PORT) &= 0xF0; /* configure data pins as input */
|
||||||
|
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data = PIN(LCD_DATA0_PORT) << 4; /* read high nibble first */
|
||||||
|
lcd_e_low();
|
||||||
|
|
||||||
|
lcd_e_delay(); /* Enable 500ns low */
|
||||||
|
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data |= PIN(LCD_DATA0_PORT) & 0x0F; /* read low nibble */
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure data pins as input */
|
||||||
|
DDR(LCD_DATA0_PORT) &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
|
||||||
|
/* read high nibble first */
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data = 0;
|
||||||
|
if ( PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN) ) data |= 0x10;
|
||||||
|
if ( PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN) ) data |= 0x20;
|
||||||
|
if ( PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN) ) data |= 0x40;
|
||||||
|
if ( PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN) ) data |= 0x80;
|
||||||
|
lcd_e_low();
|
||||||
|
|
||||||
|
lcd_e_delay(); /* Enable 500ns low */
|
||||||
|
|
||||||
|
/* read low nibble */
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
if ( PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN) ) data |= 0x01;
|
||||||
|
if ( PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN) ) data |= 0x02;
|
||||||
|
if ( PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN) ) data |= 0x04;
|
||||||
|
if ( PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN) ) data |= 0x08;
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
return data;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
#define lcd_read(rs) (rs) ? *(volatile uint8_t*)(LCD_IO_DATA+LCD_IO_READ) : *(volatile uint8_t*)(LCD_IO_FUNCTION+LCD_IO_READ)
|
||||||
|
/* rs==0 -> read instruction from LCD_IO_FUNCTION */
|
||||||
|
/* rs==1 -> read data from LCD_IO_DATA */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
loops while lcd is busy, returns address counter
|
||||||
|
*************************************************************************/
|
||||||
|
static uint8_t lcd_waitbusy(void)
|
||||||
|
{
|
||||||
|
/* wait until busy flag is cleared */
|
||||||
|
for (; lcd_read(0) & (1 << LCD_BUSY); );
|
||||||
|
|
||||||
|
/* the address counter is updated 4us after the busy flag is cleared */
|
||||||
|
delay(2);
|
||||||
|
|
||||||
|
/* now read the address counter */
|
||||||
|
return (lcd_read(0)); // return address counter
|
||||||
|
}/* lcd_waitbusy */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Move cursor to the start of next line or to the first line if the cursor
|
||||||
|
is already on the last line.
|
||||||
|
*************************************************************************/
|
||||||
|
static inline void lcd_newline(uint8_t pos)
|
||||||
|
{
|
||||||
|
register uint8_t addressCounter;
|
||||||
|
|
||||||
|
#if LCD_LINES==1
|
||||||
|
addressCounter = 0;
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==2
|
||||||
|
if ( pos < (LCD_START_LINE2) )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==4
|
||||||
|
#if KS0073_4LINES_MODE
|
||||||
|
if ( pos < LCD_START_LINE2 )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else if ( (pos >= LCD_START_LINE2) && (pos < LCD_START_LINE3) )
|
||||||
|
addressCounter = LCD_START_LINE3;
|
||||||
|
else if ( (pos >= LCD_START_LINE3) && (pos < LCD_START_LINE4) )
|
||||||
|
addressCounter = LCD_START_LINE4;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#else
|
||||||
|
if ( pos < LCD_START_LINE3 )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else if ( (pos >= LCD_START_LINE2) && (pos < LCD_START_LINE4) )
|
||||||
|
addressCounter = LCD_START_LINE3;
|
||||||
|
else if ( (pos >= LCD_START_LINE3) && (pos < LCD_START_LINE2) )
|
||||||
|
addressCounter = LCD_START_LINE4;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
lcd_command((1 << LCD_DDRAM) + addressCounter);
|
||||||
|
|
||||||
|
}/* lcd_newline */
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** PUBLIC FUNCTIONS
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Send LCD controller instruction command
|
||||||
|
Input: instruction to send to LCD controller, see HD44780 data sheet
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_command(uint8_t cmd)
|
||||||
|
{
|
||||||
|
lcd_waitbusy();
|
||||||
|
lcd_write(cmd,0);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Send data byte to LCD controller
|
||||||
|
Input: data to send to LCD controller, see HD44780 data sheet
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_data(uint8_t data)
|
||||||
|
{
|
||||||
|
lcd_waitbusy();
|
||||||
|
lcd_write(data,1);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Set cursor to specified position
|
||||||
|
Input: x horizontal position (0: left most position)
|
||||||
|
y vertical position (0: first line)
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_gotoxy(uint8_t x, uint8_t y)
|
||||||
|
{
|
||||||
|
#if LCD_LINES==1
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==2
|
||||||
|
if ( y==0 )
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||||
|
else
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==4
|
||||||
|
if ( y==0 )
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||||
|
else if ( y==1)
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
|
||||||
|
else if ( y==2)
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE3 + x);
|
||||||
|
else /* y==3 */
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE4 + x);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
}/* lcd_gotoxy */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
*************************************************************************/
|
||||||
|
int lcd_getxy(void)
|
||||||
|
{
|
||||||
|
return lcd_waitbusy();
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Clear display and set cursor to home position
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_clrscr(void)
|
||||||
|
{
|
||||||
|
lcd_command(1 << LCD_CLR);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Set cursor to home position
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_home(void)
|
||||||
|
{
|
||||||
|
lcd_command(1 << LCD_HOME);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display character at current cursor position
|
||||||
|
Input: character to be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_putc(char c)
|
||||||
|
{
|
||||||
|
uint8_t pos;
|
||||||
|
|
||||||
|
pos = lcd_waitbusy(); // read busy-flag and address counter
|
||||||
|
if (c=='\n')
|
||||||
|
lcd_newline(pos);
|
||||||
|
else
|
||||||
|
{
|
||||||
|
#if LCD_WRAP_LINES==1
|
||||||
|
#if LCD_LINES==1
|
||||||
|
if ( pos == LCD_START_LINE1 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1,0);
|
||||||
|
#elif LCD_LINES==2
|
||||||
|
if ( pos == LCD_START_LINE1 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2,0);
|
||||||
|
else if ( pos == LCD_START_LINE2 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1,0);
|
||||||
|
#elif LCD_LINES==4
|
||||||
|
if ( pos == LCD_START_LINE1 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2,0);
|
||||||
|
else if ( pos == LCD_START_LINE2 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE3,0);
|
||||||
|
else if ( pos == LCD_START_LINE3 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE4,0);
|
||||||
|
else if ( pos == LCD_START_LINE4 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1,0);
|
||||||
|
#endif
|
||||||
|
lcd_waitbusy();
|
||||||
|
#endif
|
||||||
|
lcd_write(c, 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_putc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display string without auto linefeed
|
||||||
|
Input: string to be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_puts(const char *s)
|
||||||
|
/* print string on lcd (no auto linefeed) */
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = *s++) ) {
|
||||||
|
lcd_putc(c);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_puts */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display string from program memory without auto linefeed
|
||||||
|
Input: string from program memory be be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_puts_p(const char *progmem_s)
|
||||||
|
/* print string from program memory on lcd (no auto linefeed) */
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = pgm_read_byte(progmem_s++)) ) {
|
||||||
|
lcd_putc(c);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_puts_p */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Initialize display and select type of cursor
|
||||||
|
Input: dispAttr LCD_DISP_OFF display off
|
||||||
|
LCD_DISP_ON display on, cursor off
|
||||||
|
LCD_DISP_ON_CURSOR display on, cursor on
|
||||||
|
LCD_DISP_CURSOR_BLINK display on, cursor on flashing
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_init(uint8_t dispAttr)
|
||||||
|
{
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/*
|
||||||
|
* Initialize LCD to 4 bit I/O mode
|
||||||
|
*/
|
||||||
|
|
||||||
|
if (
|
||||||
|
( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
&& ( &LCD_RS_PORT == &LCD_DATA0_PORT) && ( &LCD_RW_PORT == &LCD_DATA0_PORT) && (&LCD_E_PORT == &LCD_DATA0_PORT)
|
||||||
|
)
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (all LCD lines on same port) */
|
||||||
|
DDR(LCD_DATA0_PORT) |= (1 << LCD_DATA0_PIN) | (1 << LCD_DATA1_PIN) | (1 << LCD_DATA2_PIN) | (1 << LCD_DATA3_PIN) | (1 << LCD_RS_PIN) | (1 << LCD_RW_PIN) | (1 << LCD_E_PIN);
|
||||||
|
}
|
||||||
|
else if (
|
||||||
|
( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
)
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (all LCD data lines on same port, but control lines on different ports) */
|
||||||
|
DDR(LCD_DATA0_PORT) |= (1 << LCD_DATA0_PIN) | (1 << LCD_DATA1_PIN) | (1 << LCD_DATA2_PIN) | (1 << LCD_DATA3_PIN);
|
||||||
|
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||||
|
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||||
|
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (LCD data and control lines on different ports */
|
||||||
|
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||||
|
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||||
|
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||||
|
DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||||
|
}
|
||||||
|
delay(16000); /* wait 16ms or more after power-on */
|
||||||
|
|
||||||
|
/* initial write to lcd is 8bit */
|
||||||
|
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN); // _BV(LCD_FUNCTION)>>4;
|
||||||
|
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN); // _BV(LCD_FUNCTION_8BIT)>>4;
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(4992); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* repeat last command */
|
||||||
|
lcd_e_toggle(); delay(64); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* repeat last command a third time */
|
||||||
|
lcd_e_toggle(); delay(64); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* now configure for 4bit mode */
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN); // LCD_FUNCTION_4BIT_1LINE>>4
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(64); /* some displays need this additional delay */
|
||||||
|
|
||||||
|
/* from now the LCD only accepts 4 bit I/O, we can use lcd_command() */
|
||||||
|
#else
|
||||||
|
/*
|
||||||
|
* Initialize LCD to 8 bit memory mapped mode
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* enable external SRAM (memory mapped lcd) and one wait state */
|
||||||
|
MCUCR = _BV(SRE) | _BV(SRW);
|
||||||
|
|
||||||
|
/* reset LCD */
|
||||||
|
delay(16000); /* wait 16ms after power-on */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(4992); /* wait 5ms */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(64); /* wait 64us */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(64); /* wait 64us */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if KS0073_4LINES_MODE
|
||||||
|
/* Display with KS0073 controller requires special commands for enabling 4 line mode */
|
||||||
|
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_ON);
|
||||||
|
lcd_command(KS0073_4LINES_MODE);
|
||||||
|
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_OFF);
|
||||||
|
#else
|
||||||
|
lcd_command(LCD_FUNCTION_DEFAULT); /* function set: display lines */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
lcd_command(LCD_DISP_OFF); /* display off */
|
||||||
|
lcd_clrscr(); /* display clear */
|
||||||
|
lcd_command(LCD_MODE_DEFAULT); /* set entry mode */
|
||||||
|
lcd_command(dispAttr); /* display/cursor control */
|
||||||
|
|
||||||
|
}/* lcd_init */
|
||||||
|
|
@ -0,0 +1,263 @@
|
||||||
|
#ifndef LCD_H
|
||||||
|
#define LCD_H
|
||||||
|
/*************************************************************************
|
||||||
|
Title : C include file for the HD44780U LCD library (lcd.c)
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: lcd.h,v 1.13.2.2 2006/01/30 19:51:33 peter Exp $
|
||||||
|
Software: AVR-GCC 3.3
|
||||||
|
Hardware: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@defgroup pfleury_lcd LCD library
|
||||||
|
@code #include <lcd.h> @endcode
|
||||||
|
|
||||||
|
@brief Basic routines for interfacing a HD44780U-based text LCD display
|
||||||
|
|
||||||
|
Originally based on Volker Oth's LCD library,
|
||||||
|
changed lcd_init(), added additional constants for lcd_command(),
|
||||||
|
added 4-bit I/O mode, improved and optimized code.
|
||||||
|
|
||||||
|
Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
|
||||||
|
4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
|
||||||
|
|
||||||
|
Memory mapped mode compatible with Kanda STK200, but supports also
|
||||||
|
generation of R/W signal through A8 address line.
|
||||||
|
|
||||||
|
@author Peter Fleury pfleury@gmx.ch http://jump.to/fleury
|
||||||
|
|
||||||
|
@see The chapter <a href="http://homepage.sunrise.ch/mysunrise/peterfleury/avr-lcd44780.html" target="_blank">Interfacing a HD44780 Based LCD to an AVR</a>
|
||||||
|
on my home page.
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*@{*/
|
||||||
|
|
||||||
|
#if (__GNUC__ * 100 + __GNUC_MINOR__) < 303
|
||||||
|
#error "This library requires AVR-GCC 3.3 or later, update to newer AVR-GCC compiler !"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <inttypes.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for MCU Clock Frequency
|
||||||
|
* Adapt the MCU clock frequency in Hz to your target.
|
||||||
|
*/
|
||||||
|
#define XTAL F_CPU /**< clock frequency in Hz, used to calculate delay timer */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definition for LCD controller type
|
||||||
|
* Use 0 for HD44780 controller, change to 1 for displays with KS0073 controller.
|
||||||
|
*/
|
||||||
|
#define LCD_CONTROLLER_KS0073 0 /**< Use 0 for HD44780 controller, 1 for KS0073 controller */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for Display Size
|
||||||
|
* Change these definitions to adapt setting to your display
|
||||||
|
*/
|
||||||
|
#define LCD_LINES 2 /**< number of visible lines of the display */
|
||||||
|
#define LCD_DISP_LENGTH 16 /**< visibles characters per line of the display */
|
||||||
|
#define LCD_LINE_LENGTH 0x40 /**< internal line length of the display */
|
||||||
|
#define LCD_START_LINE1 0x00 /**< DDRAM address of first char of line 1 */
|
||||||
|
#define LCD_START_LINE2 0x40 /**< DDRAM address of first char of line 2 */
|
||||||
|
#define LCD_START_LINE3 0x14 /**< DDRAM address of first char of line 3 */
|
||||||
|
#define LCD_START_LINE4 0x54 /**< DDRAM address of first char of line 4 */
|
||||||
|
#define LCD_WRAP_LINES 0 /**< 0: no wrap, 1: wrap at end of visibile line */
|
||||||
|
|
||||||
|
#define LCD_IO_MODE 1 /**< 0: memory mapped mode, 1: IO port mode */
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/**
|
||||||
|
* @name Definitions for 4-bit IO mode
|
||||||
|
* Change LCD_PORT if you want to use a different port for the LCD pins.
|
||||||
|
*
|
||||||
|
* The four LCD data lines and the three control lines RS, RW, E can be on the
|
||||||
|
* same port or on different ports.
|
||||||
|
* Change LCD_RS_PORT, LCD_RW_PORT, LCD_E_PORT if you want the control lines on
|
||||||
|
* different ports.
|
||||||
|
*
|
||||||
|
* Normally the four data lines should be mapped to bit 0..3 on one port, but it
|
||||||
|
* is possible to connect these data lines in different order or even on different
|
||||||
|
* ports by adapting the LCD_DATAx_PORT and LCD_DATAx_PIN definitions.
|
||||||
|
* */
|
||||||
|
#define LCD_PORT PORTB /**< port for the LCD lines */
|
||||||
|
#define LCD_DATA0_PORT LCD_PORT /**< port for 4bit data bit 0 */
|
||||||
|
#define LCD_DATA1_PORT LCD_PORT /**< port for 4bit data bit 1 */
|
||||||
|
#define LCD_DATA2_PORT LCD_PORT /**< port for 4bit data bit 2 */
|
||||||
|
#define LCD_DATA3_PORT LCD_PORT /**< port for 4bit data bit 3 */
|
||||||
|
#define LCD_DATA0_PIN 0 /**< pin for 4bit data bit 0 */
|
||||||
|
#define LCD_DATA1_PIN 1 /**< pin for 4bit data bit 1 */
|
||||||
|
#define LCD_DATA2_PIN 2 /**< pin for 4bit data bit 2 */
|
||||||
|
#define LCD_DATA3_PIN 3 /**< pin for 4bit data bit 3 */
|
||||||
|
#define LCD_RS_PORT PORTD /**< port for RS line */
|
||||||
|
#define LCD_RS_PIN 2 /**< pin for RS line */
|
||||||
|
#define LCD_RW_PORT PORTD /**< port for RW line */
|
||||||
|
#define LCD_RW_PIN 3 /**< pin for RW line */
|
||||||
|
#define LCD_E_PORT PORTD /**< port for Enable line */
|
||||||
|
#define LCD_E_PIN 4 /**< pin for Enable line */
|
||||||
|
|
||||||
|
#elif defined(__AVR_AT90S4414__) || defined(__AVR_AT90S8515__) || defined(__AVR_ATmega64__) || \
|
||||||
|
defined(__AVR_ATmega8515__)|| defined(__AVR_ATmega103__) || defined(__AVR_ATmega128__) || \
|
||||||
|
defined(__AVR_ATmega161__) || defined(__AVR_ATmega162__)
|
||||||
|
/*
|
||||||
|
* memory mapped mode is only supported when the device has an external data memory interface
|
||||||
|
*/
|
||||||
|
#define LCD_IO_DATA 0xC000 /* A15=E=1, A14=RS=1 */
|
||||||
|
#define LCD_IO_FUNCTION 0x8000 /* A15=E=1, A14=RS=0 */
|
||||||
|
#define LCD_IO_READ 0x0100 /* A8 =R/W=1 (R/W: 1=Read, 0=Write */
|
||||||
|
#else
|
||||||
|
#error "external data memory interface not available for this device, use 4-bit IO port mode"
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for LCD command instructions
|
||||||
|
* The constants define the various LCD controller instructions which can be passed to the
|
||||||
|
* function lcd_command(), see HD44780 data sheet for a complete description.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* instruction register bit positions, see HD44780U data sheet */
|
||||||
|
#define LCD_CLR 0 /* DB0: clear display */
|
||||||
|
#define LCD_HOME 1 /* DB1: return to home position */
|
||||||
|
#define LCD_ENTRY_MODE 2 /* DB2: set entry mode */
|
||||||
|
#define LCD_ENTRY_INC 1 /* DB1: 1=increment, 0=decrement */
|
||||||
|
#define LCD_ENTRY_SHIFT 0 /* DB2: 1=display shift on */
|
||||||
|
#define LCD_ON 3 /* DB3: turn lcd/cursor on */
|
||||||
|
#define LCD_ON_DISPLAY 2 /* DB2: turn display on */
|
||||||
|
#define LCD_ON_CURSOR 1 /* DB1: turn cursor on */
|
||||||
|
#define LCD_ON_BLINK 0 /* DB0: blinking cursor ? */
|
||||||
|
#define LCD_MOVE 4 /* DB4: move cursor/display */
|
||||||
|
#define LCD_MOVE_DISP 3 /* DB3: move display (0-> cursor) ? */
|
||||||
|
#define LCD_MOVE_RIGHT 2 /* DB2: move right (0-> left) ? */
|
||||||
|
#define LCD_FUNCTION 5 /* DB5: function set */
|
||||||
|
#define LCD_FUNCTION_8BIT 4 /* DB4: set 8BIT mode (0->4BIT mode) */
|
||||||
|
#define LCD_FUNCTION_2LINES 3 /* DB3: two lines (0->one line) */
|
||||||
|
#define LCD_FUNCTION_10DOTS 2 /* DB2: 5x10 font (0->5x7 font) */
|
||||||
|
#define LCD_CGRAM 6 /* DB6: set CG RAM address */
|
||||||
|
#define LCD_DDRAM 7 /* DB7: set DD RAM address */
|
||||||
|
#define LCD_BUSY 7 /* DB7: LCD is busy */
|
||||||
|
|
||||||
|
/* set entry mode: display shift on/off, dec/inc cursor move direction */
|
||||||
|
#define LCD_ENTRY_DEC 0x04 /* display shift off, dec cursor move dir */
|
||||||
|
#define LCD_ENTRY_DEC_SHIFT 0x05 /* display shift on, dec cursor move dir */
|
||||||
|
#define LCD_ENTRY_INC_ 0x06 /* display shift off, inc cursor move dir */
|
||||||
|
#define LCD_ENTRY_INC_SHIFT 0x07 /* display shift on, inc cursor move dir */
|
||||||
|
|
||||||
|
/* display on/off, cursor on/off, blinking char at cursor position */
|
||||||
|
#define LCD_DISP_OFF 0x08 /* display off */
|
||||||
|
#define LCD_DISP_ON 0x0C /* display on, cursor off */
|
||||||
|
#define LCD_DISP_ON_BLINK 0x0D /* display on, cursor off, blink char */
|
||||||
|
#define LCD_DISP_ON_CURSOR 0x0E /* display on, cursor on */
|
||||||
|
#define LCD_DISP_ON_CURSOR_BLINK 0x0F /* display on, cursor on, blink char */
|
||||||
|
|
||||||
|
/* move cursor/shift display */
|
||||||
|
#define LCD_MOVE_CURSOR_LEFT 0x10 /* move cursor left (decrement) */
|
||||||
|
#define LCD_MOVE_CURSOR_RIGHT 0x14 /* move cursor right (increment) */
|
||||||
|
#define LCD_MOVE_DISP_LEFT 0x18 /* shift display left */
|
||||||
|
#define LCD_MOVE_DISP_RIGHT 0x1C /* shift display right */
|
||||||
|
|
||||||
|
/* function set: set interface data length and number of display lines */
|
||||||
|
#define LCD_FUNCTION_4BIT_1LINE 0x20 /* 4-bit interface, single line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_4BIT_2LINES 0x28 /* 4-bit interface, dual line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_8BIT_1LINE 0x30 /* 8-bit interface, single line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_8BIT_2LINES 0x38 /* 8-bit interface, dual line, 5x7 dots */
|
||||||
|
|
||||||
|
|
||||||
|
#define LCD_MODE_DEFAULT ((1<<LCD_ENTRY_MODE) | (1<<LCD_ENTRY_INC) )
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Functions
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Initialize display and select type of cursor
|
||||||
|
@param dispAttr \b LCD_DISP_OFF display off\n
|
||||||
|
\b LCD_DISP_ON display on, cursor off\n
|
||||||
|
\b LCD_DISP_ON_CURSOR display on, cursor on\n
|
||||||
|
\b LCD_DISP_ON_CURSOR_BLINK display on, cursor on flashing
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_init(uint8_t dispAttr);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Clear display and set cursor to home position
|
||||||
|
@param void
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_clrscr(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Set cursor to home position
|
||||||
|
@param void
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_home(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Set cursor to specified position
|
||||||
|
|
||||||
|
@param x horizontal position\n (0: left most position)
|
||||||
|
@param y vertical position\n (0: first line)
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_gotoxy(uint8_t x, uint8_t y);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display character at current cursor position
|
||||||
|
@param c character to be displayed
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_putc(char c);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display string without auto linefeed
|
||||||
|
@param s string to be displayed
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_puts(const char *s);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display string from program memory without auto linefeed
|
||||||
|
@param s string from program memory be be displayed
|
||||||
|
@return none
|
||||||
|
@see lcd_puts_P
|
||||||
|
*/
|
||||||
|
void lcd_puts_p(const char *progmem_s);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Send LCD controller instruction command
|
||||||
|
@param cmd instruction to send to LCD controller, see HD44780 data sheet
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_command(uint8_t cmd);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Send data byte to LCD controller
|
||||||
|
|
||||||
|
Similar to lcd_putc(), but without interpreting LF
|
||||||
|
@param data byte to send to LCD controller, see HD44780 data sheet
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_data(uint8_t data);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief macros for automatically storing string constant in program memory
|
||||||
|
*/
|
||||||
|
#define lcd_puts_P(__s) lcd_puts_p(PSTR(__s))
|
||||||
|
|
||||||
|
/*@}*/
|
||||||
|
#endif //LCD_H
|
||||||
|
|
@ -0,0 +1,282 @@
|
||||||
|
8870 execve("/usr/bin/avr-gcc", ["avr-gcc", "-g", "-Wall", "-Wstrict-prototypes", "-Os", "-mmcu=atmega168", "-DF_CPU=16000000L", "-std=gnu99", "-funsigned-char", "-funsigned-bitfields", "-fpack-struct", "-fshort-enums", "-Wl,-u,vfprintf", "-lprintf_min", "-o", "battery_charger.elf", ...], [/* 55 vars */]) = 0
|
||||||
|
8870 brk(0) = 0x9a43000
|
||||||
|
8870 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 open("/etc/ld.so.cache", O_RDONLY) = 3
|
||||||
|
8870 fstat64(3, {st_mode=S_IFREG|0644, st_size=105128, ...}) = 0
|
||||||
|
8870 mmap2(NULL, 105128, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7ed7000
|
||||||
|
8870 close(3) = 0
|
||||||
|
8870 open("/lib/libc.so.6", O_RDONLY) = 3
|
||||||
|
8870 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220g\1\0004\0\0\0\244"..., 512) = 512
|
||||||
|
8870 fstat64(3, {st_mode=S_IFREG|0755, st_size=1302812, ...}) = 0
|
||||||
|
8870 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ed6000
|
||||||
|
8870 mmap2(NULL, 1308240, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7d96000
|
||||||
|
8870 mmap2(0xb7ed0000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13a) = 0xb7ed0000
|
||||||
|
8870 mmap2(0xb7ed3000, 9808, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7ed3000
|
||||||
|
8870 close(3) = 0
|
||||||
|
8870 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7d95000
|
||||||
|
8870 set_thread_area({entry_number:-1 -> 6, base_addr:0xb7d956c0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
|
||||||
|
8870 mprotect(0xb7ed0000, 8192, PROT_READ) = 0
|
||||||
|
8870 mprotect(0x804a000, 4096, PROT_READ) = 0
|
||||||
|
8870 mprotect(0xb7f0d000, 4096, PROT_READ) = 0
|
||||||
|
8870 munmap(0xb7ed7000, 105128) = 0
|
||||||
|
8870 brk(0) = 0x9a43000
|
||||||
|
8870 brk(0x9a64000) = 0x9a64000
|
||||||
|
8870 stat64("/usr/i686-pc-linux-gnu/avr/gcc-bin/4.3.3/avr-gcc", {st_mode=S_IFREG|0755, st_size=196108, ...}) = 0
|
||||||
|
8870 execve("/usr/i686-pc-linux-gnu/avr/gcc-bin/4.3.3/avr-gcc", ["/usr/i686-pc-linux-gnu/avr/gcc-b"..., "-g", "-Wall", "-Wstrict-prototypes", "-Os", "-mmcu=atmega168", "-DF_CPU=16000000L", "-std=gnu99", "-funsigned-char", "-funsigned-bitfields", "-fpack-struct", "-fshort-enums", "-Wl,-u,vfprintf", "-lprintf_min", "-o", "battery_charger.elf", ...], [/* 55 vars */]) = 0
|
||||||
|
8870 brk(0) = 0x91d7000
|
||||||
|
8870 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 open("/etc/ld.so.cache", O_RDONLY) = 3
|
||||||
|
8870 fstat64(3, {st_mode=S_IFREG|0644, st_size=105128, ...}) = 0
|
||||||
|
8870 mmap2(NULL, 105128, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eeb000
|
||||||
|
8870 close(3) = 0
|
||||||
|
8870 open("/lib/libc.so.6", O_RDONLY) = 3
|
||||||
|
8870 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220g\1\0004\0\0\0\244"..., 512) = 512
|
||||||
|
8870 fstat64(3, {st_mode=S_IFREG|0755, st_size=1302812, ...}) = 0
|
||||||
|
8870 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7eea000
|
||||||
|
8870 mmap2(NULL, 1308240, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7daa000
|
||||||
|
8870 mmap2(0xb7ee4000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13a) = 0xb7ee4000
|
||||||
|
8870 mmap2(0xb7ee7000, 9808, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7ee7000
|
||||||
|
8870 close(3) = 0
|
||||||
|
8870 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7da9000
|
||||||
|
8870 set_thread_area({entry_number:-1 -> 6, base_addr:0xb7da96c0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
|
||||||
|
8870 mprotect(0xb7ee4000, 8192, PROT_READ) = 0
|
||||||
|
8870 mprotect(0x8077000, 4096, PROT_READ) = 0
|
||||||
|
8870 mprotect(0xb7f21000, 4096, PROT_READ) = 0
|
||||||
|
8870 munmap(0xb7eeb000, 105128) = 0
|
||||||
|
8870 brk(0) = 0x91d7000
|
||||||
|
8870 brk(0x91f8000) = 0x91f8000
|
||||||
|
8870 rt_sigaction(SIGINT, {0x1, [INT], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGINT, {0x804f730, [INT], SA_RESTART}, {0x1, [INT], SA_RESTART}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGHUP, {0x1, [HUP], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGHUP, {0x804f730, [HUP], SA_RESTART}, {0x1, [HUP], SA_RESTART}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGTERM, {0x1, [TERM], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGTERM, {0x804f730, [TERM], SA_RESTART}, {0x1, [TERM], SA_RESTART}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGPIPE, {0x1, [PIPE], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGPIPE, {0x804f730, [PIPE], SA_RESTART}, {0x1, [PIPE], SA_RESTART}, 8) = 0
|
||||||
|
8870 rt_sigaction(SIGCHLD, {SIG_DFL, [CHLD], SA_RESTART}, {SIG_DFL, [], 0}, 8) = 0
|
||||||
|
8870 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr/gcc-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr/gcc-bin/4.3.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr/gcc-bin/4.3.3/avr-gcc", {st_mode=S_IFREG|0755, st_size=196108, ...}) = 0
|
||||||
|
8870 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr/gcc-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr/gcc-bin/4.3.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 lstat64("/usr/i686-pc-linux-gnu/avr/gcc-bin/4.3.3/avr-gcc", {st_mode=S_IFREG|0755, st_size=196108, ...}) = 0
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/", X_OK) = 0
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/", X_OK) = 0
|
||||||
|
8870 access("battery_charger.o", F_OK) = 0
|
||||||
|
8870 access("ringbuffer.o", F_OK) = 0
|
||||||
|
8870 access("serial.o", F_OK) = 0
|
||||||
|
8870 access("lcd.o", F_OK) = 0
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/specs", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr/4.3.3/specs", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/specs", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 access("/usr/lib/gcc/avr/specs", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/libexec/gcc/avr/4.3.3/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/libexec/gcc/avr/4.3.3/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/libexec/gcc/avr/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/bin/avr/4.3.3/.", 0xbfc20ca4) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/bin/.", 0xbfc20cb4) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/avr5/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr/4.3.3/avr5/.", 0xbfc20ca4) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr5/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr/4.3.3/.", 0xbfc20ca4) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/avr5/crtm168.o", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr/4.3.3/avr5/crtm168.o", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 access("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr5/crtm168.o", R_OK) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/avr5/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr/4.3.3/avr5/.", 0xbfc20054) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr5/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr/4.3.3/.", 0xbfc20054) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/.", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8870 stat64("/usr/libexec/gcc/avr/4.3.3/ld", 0xbfc20c84) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/libexec/gcc/avr/4.3.3/ld", 0xbfc20c84) = -1 ENOENT (No such file or directory)
|
||||||
|
8870 stat64("/usr/libexec/gcc/avr/ld", {st_mode=S_IFREG|0755, st_size=349460, ...}) = 0
|
||||||
|
8870 access("/usr/libexec/gcc/avr/ld", X_OK) = 0
|
||||||
|
8870 vfork() = 8871
|
||||||
|
8871 execve("/usr/libexec/gcc/avr/ld", ["/usr/libexec/gcc/avr/ld", "-m", "avr5", "-Tdata", "0x800100", "-o", "battery_charger.elf", "/usr/lib/gcc/avr/4.3.3/../../../"..., "-L/usr/lib/gcc/avr/4.3.3/avr5", "-L/usr/lib/gcc/avr/4.3.3/../../."..., "-L/usr/lib/gcc/avr/4.3.3", "-L/usr/lib/gcc/avr/4.3.3/../../."..., "-u", "vfprintf", "-lprintf_min", "battery_charger.o", ...], [/* 59 vars */]) = 0
|
||||||
|
8871 brk(0) = 0x9049000
|
||||||
|
8871 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fd8000
|
||||||
|
8871 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/tls/i686/sse2/libbfd-2.19.1.so", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/lib/tls/i686/sse2", 0xbfdf4ffc) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/tls/i686/libbfd-2.19.1.so", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/lib/tls/i686", 0xbfdf4ffc) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/tls/sse2/libbfd-2.19.1.so", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/lib/tls/sse2", 0xbfdf4ffc) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/tls/libbfd-2.19.1.so", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/lib/tls", 0xbfdf4ffc) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/i686/sse2/libbfd-2.19.1.so", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/lib/i686/sse2", 0xbfdf4ffc) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/i686/libbfd-2.19.1.so", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/lib/i686", 0xbfdf4ffc) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/sse2/libbfd-2.19.1.so", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/lib/sse2", 0xbfdf4ffc) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/libbfd-2.19.1.so", O_RDONLY) = 3
|
||||||
|
8871 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240#\1\0004\0\0\0\10"..., 512) = 512
|
||||||
|
8871 fstat64(3, {st_mode=S_IFREG|0755, st_size=565784, ...}) = 0
|
||||||
|
8871 mmap2(NULL, 581424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f4a000
|
||||||
|
8871 mmap2(0xb7fcf000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x85) = 0xb7fcf000
|
||||||
|
8871 mmap2(0xb7fd4000, 16176, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fd4000
|
||||||
|
8871 close(3) = 0
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/libz.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/etc/ld.so.cache", O_RDONLY) = 3
|
||||||
|
8871 fstat64(3, {st_mode=S_IFREG|0644, st_size=105128, ...}) = 0
|
||||||
|
8871 mmap2(NULL, 105128, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f30000
|
||||||
|
8871 close(3) = 0
|
||||||
|
8871 open("/lib/libz.so.1", O_RDONLY) = 3
|
||||||
|
8871 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\27\0\0004\0\0\0\254"..., 512) = 512
|
||||||
|
8871 fstat64(3, {st_mode=S_IFREG|0755, st_size=75156, ...}) = 0
|
||||||
|
8871 mmap2(NULL, 78072, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7f1c000
|
||||||
|
8871 mmap2(0xb7f2e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11) = 0xb7f2e000
|
||||||
|
8871 close(3) = 0
|
||||||
|
8871 open("/usr/i686-pc-linux-gnu/avr/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/lib/libc.so.6", O_RDONLY) = 3
|
||||||
|
8871 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\220g\1\0004\0\0\0\244"..., 512) = 512
|
||||||
|
8871 fstat64(3, {st_mode=S_IFREG|0755, st_size=1302812, ...}) = 0
|
||||||
|
8871 mmap2(NULL, 1308240, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7ddc000
|
||||||
|
8871 mmap2(0xb7f16000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13a) = 0xb7f16000
|
||||||
|
8871 mmap2(0xb7f19000, 9808, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f19000
|
||||||
|
8871 close(3) = 0
|
||||||
|
8871 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7ddb000
|
||||||
|
8871 set_thread_area({entry_number:-1 -> 6, base_addr:0xb7ddb6c0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
|
||||||
|
8871 mprotect(0xb7f16000, 8192, PROT_READ) = 0
|
||||||
|
8871 mprotect(0xb7f2e000, 4096, PROT_READ) = 0
|
||||||
|
8871 mprotect(0xb7fcf000, 16384, PROT_READ) = 0
|
||||||
|
8871 mprotect(0x809c000, 4096, PROT_READ) = 0
|
||||||
|
8871 mprotect(0xb7ff5000, 4096, PROT_READ) = 0
|
||||||
|
8871 munmap(0xb7f30000, 105128) = 0
|
||||||
|
8871 getrusage(RUSAGE_SELF, {ru_utime={0, 0}, ru_stime={0, 2999}, ...}) = 0
|
||||||
|
8871 brk(0) = 0x9049000
|
||||||
|
8871 brk(0x906a000) = 0x906a000
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc/avr/ld", {st_mode=S_IFLNK|0777, st_size=49, ...}) = 0
|
||||||
|
8871 readlink("/usr/libexec/gcc/avr/ld", "/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/ld"..., 4096) = 49
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/ld", {st_mode=S_IFREG|0755, st_size=349460, ...}) = 0
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/../../../../avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib", {st_mode=S_IFDIR|0755, st_size=69632, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr/4.3.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr/4.3.3/avr5", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib", {st_mode=S_IFDIR|0755, st_size=69632, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr/4.3.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/avr/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/avr/lib/avr5", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib", {st_mode=S_IFDIR|0755, st_size=69632, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr/4.3.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib", {st_mode=S_IFDIR|0755, st_size=69632, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/lib/gcc/avr/4.3.3", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/avr/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 open("ldscripts/avr5.x", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc/avr/ld", {st_mode=S_IFLNK|0777, st_size=49, ...}) = 0
|
||||||
|
8871 readlink("/usr/libexec/gcc/avr/ld", "/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/ld"..., 4096) = 49
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/ld", {st_mode=S_IFREG|0755, st_size=349460, ...}) = 0
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/../../../../avr/lib/ldscripts", 0xbfdf5504) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/libexec/gcc/avr/ld", {st_mode=S_IFLNK|0777, st_size=49, ...}) = 0
|
||||||
|
8871 readlink("/usr/libexec/gcc/avr/ld", "/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/ld"..., 4096) = 49
|
||||||
|
8871 lstat64("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
|
||||||
|
8871 lstat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/ld", {st_mode=S_IFREG|0755, st_size=349460, ...}) = 0
|
||||||
|
8871 stat64("/usr/i686-pc-linux-gnu/avr/binutils-bin/2.19.1/../lib/ldscripts", 0xbfdf5504) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/avr/lib/ldscripts", 0xbfdf5504) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/libexec/gcc/avr/ldscripts", 0xbfdf5504) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 stat64("/usr/libexec/gcc/avr/../lib/ldscripts", 0xbfdf5504) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/lib/gcc/avr/4.3.3/avr5/ldscripts/avr5.x", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/avr5/ldscripts/avr5.x", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/lib/gcc/avr/4.3.3/ldscripts/avr5.x", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 open("/usr/lib/gcc/avr/4.3.3/../../../../avr/lib/ldscripts/avr5.x", O_RDONLY) = -1 ENOENT (No such file or directory)
|
||||||
|
8871 write(2, "/usr/libexec/gcc/avr/ld"..., 23) = 23
|
||||||
|
8871 write(2, ":"..., 1) = 1
|
||||||
|
8871 write(2, " "..., 1) = 1
|
||||||
|
8871 write(2, "c"..., 1) = 1
|
||||||
|
8871 write(2, "a"..., 1) = 1
|
||||||
|
8871 write(2, "n"..., 1) = 1
|
||||||
|
8871 write(2, "n"..., 1) = 1
|
||||||
|
8871 write(2, "o"..., 1) = 1
|
||||||
|
8871 write(2, "t"..., 1) = 1
|
||||||
|
8871 write(2, " "..., 1) = 1
|
||||||
|
8871 write(2, "o"..., 1) = 1
|
||||||
|
8871 write(2, "p"..., 1) = 1
|
||||||
|
8871 write(2, "e"..., 1) = 1
|
||||||
|
8871 write(2, "n"..., 1) = 1
|
||||||
|
8871 write(2, " "..., 1) = 1
|
||||||
|
8871 write(2, "l"..., 1) = 1
|
||||||
|
8871 write(2, "i"..., 1) = 1
|
||||||
|
8871 write(2, "n"..., 1) = 1
|
||||||
|
8871 write(2, "k"..., 1) = 1
|
||||||
|
8871 write(2, "e"..., 1) = 1
|
||||||
|
8871 write(2, "r"..., 1) = 1
|
||||||
|
8871 write(2, " "..., 1) = 1
|
||||||
|
8871 write(2, "s"..., 1) = 1
|
||||||
|
8871 write(2, "c"..., 1) = 1
|
||||||
|
8871 write(2, "r"..., 1) = 1
|
||||||
|
8871 write(2, "i"..., 1) = 1
|
||||||
|
8871 write(2, "p"..., 1) = 1
|
||||||
|
8871 write(2, "t"..., 1) = 1
|
||||||
|
8871 write(2, " "..., 1) = 1
|
||||||
|
8871 write(2, "f"..., 1) = 1
|
||||||
|
8871 write(2, "i"..., 1) = 1
|
||||||
|
8871 write(2, "l"..., 1) = 1
|
||||||
|
8871 write(2, "e"..., 1) = 1
|
||||||
|
8871 write(2, " "..., 1) = 1
|
||||||
|
8871 write(2, "ldscripts/avr5.x"..., 16) = 16
|
||||||
|
8871 write(2, ":"..., 1) = 1
|
||||||
|
8871 write(2, " "..., 1) = 1
|
||||||
|
8871 write(2, "No such file or directory"..., 25) = 25
|
||||||
|
8871 write(2, "\n"..., 1) = 1
|
||||||
|
8871 exit_group(1) = ?
|
||||||
|
8870 --- SIGCHLD (Child exited) @ 0 (0) ---
|
||||||
|
8870 waitpid(8871, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0) = 8871
|
||||||
|
8870 exit_group(1) = ?
|
||||||
|
|
@ -0,0 +1,89 @@
|
||||||
|
#include "ringbuffer.h"
|
||||||
|
|
||||||
|
uint16_t _rb_mod(uint16_t num, uint16_t denom)
|
||||||
|
{
|
||||||
|
for (; num >= denom; num -= denom);
|
||||||
|
return num;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ringbuffer_init(ringbuffer *buf, int bufsize)
|
||||||
|
{
|
||||||
|
buf->read_pointer = 0;
|
||||||
|
buf->write_pointer = 0;
|
||||||
|
buf->size = bufsize - sizeof(ringbuffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_canread(ringbuffer *buf)
|
||||||
|
{
|
||||||
|
return _rb_mod(buf->write_pointer + buf->size + buf->size - buf->read_pointer, buf->size);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_canwrite(ringbuffer *buf)
|
||||||
|
{
|
||||||
|
return _rb_mod(buf->read_pointer + buf->size + buf->size - buf->write_pointer - 1, buf->size);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t ringbuffer_readchar(ringbuffer *buf)
|
||||||
|
{
|
||||||
|
uint8_t r = 0;
|
||||||
|
if (ringbuffer_canread(buf))
|
||||||
|
{
|
||||||
|
r = buf->data[buf->read_pointer];
|
||||||
|
buf->read_pointer = _rb_mod(buf->read_pointer + 1, buf->size);
|
||||||
|
}
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ringbuffer_writechar(ringbuffer *buf, uint8_t data)
|
||||||
|
{
|
||||||
|
if (ringbuffer_canwrite(buf))
|
||||||
|
{
|
||||||
|
buf->data[buf->write_pointer] = data;
|
||||||
|
buf->write_pointer = _rb_mod(buf->write_pointer + 1, buf->size);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
uint8_t ringbuffer_peekchar(ringbuffer *buf, uint16_t index)
|
||||||
|
{
|
||||||
|
return buf->data[_rb_mod(buf->read_pointer + index, buf->size)];
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_readblock(ringbuffer *buf, uint8_t *newbuf, int size)
|
||||||
|
{
|
||||||
|
uint16_t nc, i;
|
||||||
|
uint8_t *rp, *ms;
|
||||||
|
if ((nc = ringbuffer_canread(buf)) < size)
|
||||||
|
size = nc;
|
||||||
|
if (size)
|
||||||
|
{
|
||||||
|
for (i = 0, rp = buf->data + buf->read_pointer, ms = buf->data + buf->size; i < size; i++, rp++)
|
||||||
|
{
|
||||||
|
if (rp >= ms)
|
||||||
|
rp = buf->data;
|
||||||
|
newbuf[i] = *rp;
|
||||||
|
}
|
||||||
|
buf->read_pointer = rp - buf->data;
|
||||||
|
}
|
||||||
|
return size;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_writeblock(ringbuffer *buf, uint8_t *data, int size)
|
||||||
|
{
|
||||||
|
uint16_t nc, i;
|
||||||
|
uint8_t *wp, *ms;
|
||||||
|
|
||||||
|
if ((nc = ringbuffer_canwrite(buf)) < size)
|
||||||
|
size = nc;
|
||||||
|
if (size)
|
||||||
|
{
|
||||||
|
for (i = 0, wp = buf->write_pointer + buf->data, ms = buf->data + buf->size; i < size; i++, wp++)
|
||||||
|
{
|
||||||
|
if (wp >= ms)
|
||||||
|
wp = buf->data;
|
||||||
|
*wp = data[i];
|
||||||
|
}
|
||||||
|
buf->write_pointer = wp - buf->data;
|
||||||
|
}
|
||||||
|
return size;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,26 @@
|
||||||
|
#ifndef _RINGBUFFER_H
|
||||||
|
#define _RINGBUFFER_H
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <avr/interrupt.h>
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
uint16_t read_pointer;
|
||||||
|
uint16_t write_pointer;
|
||||||
|
uint16_t size;
|
||||||
|
uint8_t data[];
|
||||||
|
} ringbuffer;
|
||||||
|
|
||||||
|
void ringbuffer_init(ringbuffer *buf, int bufsize);
|
||||||
|
|
||||||
|
uint16_t ringbuffer_canread(ringbuffer *buf);
|
||||||
|
uint16_t ringbuffer_canwrite(ringbuffer *buf);
|
||||||
|
|
||||||
|
uint8_t ringbuffer_readchar(ringbuffer *buf);
|
||||||
|
uint8_t ringbuffer_peekchar(ringbuffer *buf, uint16_t index);
|
||||||
|
uint16_t ringbuffer_readblock(ringbuffer *buf, uint8_t *newbuf, int size);
|
||||||
|
|
||||||
|
void ringbuffer_writechar(ringbuffer *buf, uint8_t data);
|
||||||
|
uint16_t ringbuffer_writeblock(ringbuffer *buf, uint8_t *data, int size);
|
||||||
|
|
||||||
|
#endif /* _RINGBUFFER_H */
|
||||||
|
|
@ -0,0 +1,72 @@
|
||||||
|
#include "serial.h"
|
||||||
|
|
||||||
|
#include "ringbuffer.h"
|
||||||
|
|
||||||
|
#define BUFSIZE 64 + sizeof(ringbuffer)
|
||||||
|
#define BAUD 19200
|
||||||
|
|
||||||
|
volatile uint8_t _rx_buffer[BUFSIZE];
|
||||||
|
volatile uint8_t _tx_buffer[BUFSIZE];
|
||||||
|
|
||||||
|
void serial_init(uint16_t baud)
|
||||||
|
{
|
||||||
|
ringbuffer_init(rx_buffer, BUFSIZE);
|
||||||
|
ringbuffer_init(tx_buffer, BUFSIZE);
|
||||||
|
|
||||||
|
UCSR0A = 0;
|
||||||
|
UCSR0B = (1 << RXEN0) | (1 << TXEN0);
|
||||||
|
UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
|
||||||
|
|
||||||
|
UBRR0 = ((F_CPU / 16) / baud) - 1;
|
||||||
|
|
||||||
|
UCSR0B |= (1 << RXCIE0) | (1 << UDRIE0);
|
||||||
|
}
|
||||||
|
|
||||||
|
ISR(USART_RX_vect)
|
||||||
|
{
|
||||||
|
ringbuffer_writechar(rx_buffer, UDR0);
|
||||||
|
}
|
||||||
|
|
||||||
|
ISR(USART_UDRE_vect)
|
||||||
|
{
|
||||||
|
if (ringbuffer_canread(tx_buffer))
|
||||||
|
{
|
||||||
|
UDR0 = ringbuffer_readchar(tx_buffer);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
UCSR0B &= ~(1 << UDRIE0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t serial_rxchars()
|
||||||
|
{
|
||||||
|
return ringbuffer_canread(rx_buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t serial_txchars()
|
||||||
|
{
|
||||||
|
return ringbuffer_canread(tx_buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t serial_popchar()
|
||||||
|
{
|
||||||
|
return ringbuffer_readchar(rx_buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t serial_recvblock(uint8_t *block, int blocksize)
|
||||||
|
{
|
||||||
|
return ringbuffer_readblock(rx_buffer, block, blocksize);
|
||||||
|
}
|
||||||
|
|
||||||
|
void serial_writechar(uint8_t data)
|
||||||
|
{
|
||||||
|
ringbuffer_writechar(tx_buffer, data);
|
||||||
|
UCSR0B |= (1 << UDRIE0);
|
||||||
|
}
|
||||||
|
|
||||||
|
void serial_writeblock(uint8_t *data, int datalen)
|
||||||
|
{
|
||||||
|
ringbuffer_writeblock(tx_buffer, data, datalen);
|
||||||
|
UCSR0B |= (1 << UDRIE0);
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,24 @@
|
||||||
|
#ifndef _SERIAL_H
|
||||||
|
#define _SERIAL_H
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <avr/io.h>
|
||||||
|
|
||||||
|
#define rx_buffer ((ringbuffer *) _rx_buffer)
|
||||||
|
#define tx_buffer ((ringbuffer *) _tx_buffer)
|
||||||
|
|
||||||
|
extern volatile uint8_t _rx_buffer[];
|
||||||
|
extern volatile uint8_t _tx_buffer[];
|
||||||
|
|
||||||
|
void serial_init(uint16_t baud);
|
||||||
|
|
||||||
|
uint16_t serial_rxchars(void);
|
||||||
|
uint16_t serial_txchars(void);
|
||||||
|
|
||||||
|
uint8_t serial_popchar(void);
|
||||||
|
void serial_writechar(uint8_t data);
|
||||||
|
|
||||||
|
uint16_t serial_recvblock(uint8_t *block, int blocksize);
|
||||||
|
void serial_writeblock(uint8_t *data, int datalen);
|
||||||
|
|
||||||
|
#endif /* _SERIAL_H */
|
||||||
|
|
@ -0,0 +1,52 @@
|
||||||
|
|
||||||
|
|
||||||
|
MCU_TARGET = atmega168
|
||||||
|
F_CPU = 16000000L
|
||||||
|
|
||||||
|
|
||||||
|
ARCH = avr-
|
||||||
|
OPTIMIZE = -Os
|
||||||
|
CFLAGS = -g -Wall -Wstrict-prototypes $(OPTIMIZE) -mmcu=$(MCU_TARGET) -DF_CPU=$(F_CPU) $(DEFS) -std=gnu99 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
|
||||||
|
LDFLAGS = -Wl,-u,vfprintf -lprintf_min
|
||||||
|
|
||||||
|
CC = $(ARCH)gcc
|
||||||
|
OBJDUMP = $(ARCH)objdump
|
||||||
|
OBJCOPY = $(ARCH)objcopy
|
||||||
|
AVRDUDE = ~/bin/avrdude
|
||||||
|
|
||||||
|
PROGPORT = /dev/arduino
|
||||||
|
PROGBAUD = 19200
|
||||||
|
|
||||||
|
PROGRAM = freq-counter
|
||||||
|
|
||||||
|
SOURCES = $(PROGRAM).c ringbuffer.c serial.c lcd.c
|
||||||
|
|
||||||
|
OBJ = $(patsubst %.c,%.o,${SOURCES})
|
||||||
|
|
||||||
|
.PHONY: all program clean
|
||||||
|
.PRECIOUS: %.o %.elf
|
||||||
|
|
||||||
|
all: $(PROGRAM).hex $(PROGRAM).lst
|
||||||
|
|
||||||
|
program: $(PROGRAM).hex
|
||||||
|
stty $(PROGBAUD) raw ignbrk hup < $(PROGPORT)
|
||||||
|
$(AVRDUDE) -cstk500v1 -b$(PROGBAUD) -p$(MCU_TARGET) -P$(PROGPORT) -C/etc/avrdude.conf -U flash:w:$^
|
||||||
|
stty -hup -echo < $(PROGPORT)
|
||||||
|
|
||||||
|
clean:
|
||||||
|
rm -rf *.o *.elf *.lst *.map *.sym *.lss *.eep *.srec *.bin *.hex *.al
|
||||||
|
|
||||||
|
%.o: %.c
|
||||||
|
$(CC) -c $(CFLAGS) -Wa,-adhlns=$(<:.c=.al) -o $@ $^
|
||||||
|
|
||||||
|
%.elf: $(OBJ)
|
||||||
|
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)
|
||||||
|
|
||||||
|
%.lst: %.elf
|
||||||
|
$(OBJDUMP) -h -S $< > $@
|
||||||
|
|
||||||
|
%.hex: %.elf
|
||||||
|
$(OBJCOPY) -j .text -j .data -O ihex $< $@
|
||||||
|
|
||||||
|
%.bin: %.elf
|
||||||
|
$(OBJCOPY) -j .text -j .data -O binary $< $@
|
||||||
|
|
@ -0,0 +1,109 @@
|
||||||
|
#include <stddef.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/interrupt.h>
|
||||||
|
|
||||||
|
#include "ringbuffer.h"
|
||||||
|
#include "serial.h"
|
||||||
|
#include "lcd.h"
|
||||||
|
|
||||||
|
volatile uint16_t last_count;
|
||||||
|
volatile uint32_t freq;
|
||||||
|
volatile uint8_t jiffies;
|
||||||
|
|
||||||
|
char *teststring = "chickens\n";
|
||||||
|
|
||||||
|
// write to lcd function for fdev_setup_stream
|
||||||
|
static int lcd_putc_fdev(char c, FILE *stream)
|
||||||
|
{
|
||||||
|
lcd_putc(c);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int serial_putc_fdev(char c, FILE *stream)
|
||||||
|
{
|
||||||
|
serial_writechar((uint8_t) c);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int serial_getc_fdev(FILE *stream)
|
||||||
|
{
|
||||||
|
for (;serial_rxchars() == 0;);
|
||||||
|
return (int) serial_popchar();
|
||||||
|
}
|
||||||
|
|
||||||
|
static FILE lcdo = FDEV_SETUP_STREAM(lcd_putc_fdev, NULL, _FDEV_SETUP_WRITE);
|
||||||
|
static FILE serio = FDEV_SETUP_STREAM(serial_putc_fdev, serial_getc_fdev, _FDEV_SETUP_RW);
|
||||||
|
|
||||||
|
int main (void)
|
||||||
|
{
|
||||||
|
// set up LCD
|
||||||
|
lcd_init(LCD_DISP_ON_CURSOR);
|
||||||
|
|
||||||
|
lcd_puts_P("Starting...");
|
||||||
|
|
||||||
|
// set up outputs
|
||||||
|
PORTB &= ~(1 << PB5);
|
||||||
|
DDRB |= (1 << PB5);
|
||||||
|
|
||||||
|
// set up STDIN/OUT/ERR
|
||||||
|
stdin = &serio;
|
||||||
|
stdout = &lcdo;
|
||||||
|
stderr = &lcdo;
|
||||||
|
|
||||||
|
// set up timer 0
|
||||||
|
// prescale 1024 = 15625khz
|
||||||
|
// so set clear on compare mode and set OCRA to 156 for a ~100Hz (actually 100.160256Hz) rate
|
||||||
|
// use interrupt to write value into a ringbuffer
|
||||||
|
OCR0A = F_CPU / 1024 / 100;
|
||||||
|
TCCR0A = (1 << WGM01) | (0 << WGM00);
|
||||||
|
TCCR0B = (1 << CS02) | (0 << CS01) | (1 << CS00);
|
||||||
|
TIMSK0 = (1 << OCIE0A);
|
||||||
|
|
||||||
|
// set up timer 1
|
||||||
|
// no prescale, use external input for counter, no compare, no interrupts
|
||||||
|
TCCR1A = 0;
|
||||||
|
TCCR1B = (0 << ICNC1) | (0 << ICES1) | (0 << WGM13) | (0 << WGM12) | (1 << CS12) | (1 << CS11) | (0 << CS10);
|
||||||
|
TCCR1C = 0;
|
||||||
|
|
||||||
|
// set up globals
|
||||||
|
last_count = 0;
|
||||||
|
jiffies = 0;
|
||||||
|
|
||||||
|
// set up serial
|
||||||
|
serial_init(19200);
|
||||||
|
|
||||||
|
// set up pull-up on T1 (PD5)
|
||||||
|
PORTD |= (1 << PD5);
|
||||||
|
|
||||||
|
sei();
|
||||||
|
|
||||||
|
lcd_gotoxy(0, 0);
|
||||||
|
fprintf(&lcdo, "Freq. Counter OK");
|
||||||
|
|
||||||
|
for (;;)
|
||||||
|
{
|
||||||
|
if (jiffies >= 50)
|
||||||
|
{
|
||||||
|
lcd_gotoxy(0, 1);
|
||||||
|
fprintf(&lcdo, "F: %liHz", freq << 1);
|
||||||
|
if (serial_txchars() == 0)
|
||||||
|
{
|
||||||
|
fprintf(&serio, "%liHz\n", freq << 1);
|
||||||
|
}
|
||||||
|
PORTB ^= (1 << PB5);
|
||||||
|
jiffies = 0;
|
||||||
|
freq = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ISR(TIMER0_COMPA_vect)
|
||||||
|
{
|
||||||
|
last_count = TCNT1;
|
||||||
|
TCNT1 = 0;
|
||||||
|
freq += last_count;
|
||||||
|
jiffies++;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,595 @@
|
||||||
|
/****************************************************************************
|
||||||
|
Title : HD44780U LCD library
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: lcd.c,v 1.14.2.1 2006/01/29 12:16:41 peter Exp $
|
||||||
|
Software: AVR-GCC 3.3
|
||||||
|
Target: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
|
||||||
|
|
||||||
|
DESCRIPTION
|
||||||
|
Basic routines for interfacing a HD44780U-based text lcd display
|
||||||
|
|
||||||
|
Originally based on Volker Oth's lcd library,
|
||||||
|
changed lcd_init(), added additional constants for lcd_command(),
|
||||||
|
added 4-bit I/O mode, improved and optimized code.
|
||||||
|
|
||||||
|
Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
|
||||||
|
4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
|
||||||
|
|
||||||
|
Memory mapped mode compatible with Kanda STK200, but supports also
|
||||||
|
generation of R/W signal through A8 address line.
|
||||||
|
|
||||||
|
USAGE
|
||||||
|
See the C include lcd.h file for a description of each function
|
||||||
|
|
||||||
|
*****************************************************************************/
|
||||||
|
#include <inttypes.h>
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
#include "lcd.h"
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** constants/macros
|
||||||
|
*/
|
||||||
|
#define DDR(x) (*(&x - 1)) /* address of data direction register of port x */
|
||||||
|
#if defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
|
||||||
|
/* on ATmega64/128 PINF is on port 0x00 and not 0x60 */
|
||||||
|
#define PIN(x) ( &PORTF==&(x) ? _SFR_IO8(0x00) : (*(&x - 2)) )
|
||||||
|
#else
|
||||||
|
#define PIN(x) (*(&x - 2)) /* address of input register of port x */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
#define lcd_e_delay() __asm__ __volatile__( "rjmp 1f\n 1:" );
|
||||||
|
#define lcd_e_high() LCD_E_PORT |= _BV(LCD_E_PIN);
|
||||||
|
#define lcd_e_low() LCD_E_PORT &= ~_BV(LCD_E_PIN);
|
||||||
|
#define lcd_e_toggle() toggle_e()
|
||||||
|
#define lcd_rw_high() LCD_RW_PORT |= _BV(LCD_RW_PIN)
|
||||||
|
#define lcd_rw_low() LCD_RW_PORT &= ~_BV(LCD_RW_PIN)
|
||||||
|
#define lcd_rs_high() LCD_RS_PORT |= _BV(LCD_RS_PIN)
|
||||||
|
#define lcd_rs_low() LCD_RS_PORT &= ~_BV(LCD_RS_PIN)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
#if LCD_LINES==1
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_1LINE
|
||||||
|
#else
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_2LINES
|
||||||
|
#endif
|
||||||
|
#else
|
||||||
|
#if LCD_LINES==1
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_1LINE
|
||||||
|
#else
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_2LINES
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if LCD_CONTROLLER_KS0073
|
||||||
|
#if LCD_LINES==4
|
||||||
|
#define KS0073_EXTENDED_FUNCTION_REGISTER_ON 0x24 /* |0|010|0100 4-bit mode extension-bit RE = 1 */
|
||||||
|
#define KS0073_EXTENDED_FUNCTION_REGISTER_OFF 0x20 /* |0|000|1001 4 lines mode */
|
||||||
|
#define KS0073_4LINES_MODE 0x09 /* |0|001|0000 4-bit mode, extension-bit RE = 0 */
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
** function prototypes
|
||||||
|
*/
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
static void toggle_e(void);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
** local functions
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
delay loop for small accurate delays: 16-bit counter, 4 cycles/loop
|
||||||
|
*************************************************************************/
|
||||||
|
static inline void _delayFourCycles(unsigned int __count)
|
||||||
|
{
|
||||||
|
if ( __count == 0 )
|
||||||
|
__asm__ __volatile__( "rjmp 1f\n 1:" ); // 2 cycles
|
||||||
|
else
|
||||||
|
__asm__ __volatile__ (
|
||||||
|
"1: sbiw %0,1" "\n\t"
|
||||||
|
"brne 1b" // 4 cycles/loop
|
||||||
|
: "=w" (__count)
|
||||||
|
: "0" (__count)
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
delay for a minimum of <us> microseconds
|
||||||
|
the number of loops is calculated at compile-time from MCU clock frequency
|
||||||
|
*************************************************************************/
|
||||||
|
#define delay(us) _delayFourCycles( ( ( 1*(XTAL/4000) )*us)/1000 )
|
||||||
|
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/* toggle Enable Pin to initiate write */
|
||||||
|
static void toggle_e(void)
|
||||||
|
{
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Low-level function to write byte to LCD controller
|
||||||
|
Input: data byte to write to LCD
|
||||||
|
rs 1: write data
|
||||||
|
0: write instruction
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
static void lcd_write(uint8_t data,uint8_t rs)
|
||||||
|
{
|
||||||
|
if (rs) { /* write data (RS=1, RW=0) */
|
||||||
|
lcd_rs_high();
|
||||||
|
} else { /* write instruction (RS=0, RW=0) */
|
||||||
|
lcd_rs_low();
|
||||||
|
}
|
||||||
|
lcd_rw_low();
|
||||||
|
|
||||||
|
if (
|
||||||
|
(&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT)
|
||||||
|
&& (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)
|
||||||
|
)
|
||||||
|
{
|
||||||
|
/* configure data pins as output */
|
||||||
|
DDR(LCD_DATA0_PORT) |= 0x0F;
|
||||||
|
|
||||||
|
/* output high nibble first */
|
||||||
|
LCD_DATA0_PORT = (LCD_DATA0_PORT & 0xF0) | ((data >> 4) & 0x0F);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* output low nibble */
|
||||||
|
LCD_DATA0_PORT = (LCD_DATA0_PORT & 0xF0) | (data & 0x0F);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* all data pins high (inactive) */
|
||||||
|
LCD_DATA0_PORT = (LCD_DATA0_PORT & 0xF0) | 0x0F;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure data pins as output */
|
||||||
|
DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||||
|
|
||||||
|
/* output high nibble first */
|
||||||
|
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
if(data & 0x80) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
if(data & 0x40) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
if(data & 0x20) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
if(data & 0x10) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* output low nibble */
|
||||||
|
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
if(data & 0x08) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
if(data & 0x04) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
if(data & 0x02) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
if(data & 0x01) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* all data pins high (inactive) */
|
||||||
|
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
#define lcd_write(d,rs) if (rs) *(volatile uint8_t*)(LCD_IO_DATA) = d; else *(volatile uint8_t*)(LCD_IO_FUNCTION) = d;
|
||||||
|
/* rs==0 -> write instruction to LCD_IO_FUNCTION */
|
||||||
|
/* rs==1 -> write data to LCD_IO_DATA */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Low-level function to read byte from LCD controller
|
||||||
|
Input: rs 1: read data
|
||||||
|
0: read busy flag / address counter
|
||||||
|
Returns: byte read from LCD controller
|
||||||
|
*************************************************************************/
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
static uint8_t lcd_read(uint8_t rs)
|
||||||
|
{
|
||||||
|
uint8_t data;
|
||||||
|
|
||||||
|
if (rs)
|
||||||
|
lcd_rs_high(); /* RS=1: read data */
|
||||||
|
else
|
||||||
|
lcd_rs_low(); /* RS=0: read busy flag */
|
||||||
|
lcd_rw_high(); /* RW=1 read mode */
|
||||||
|
|
||||||
|
if (
|
||||||
|
(&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT)
|
||||||
|
&& (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)
|
||||||
|
)
|
||||||
|
{
|
||||||
|
DDR(LCD_DATA0_PORT) &= 0xF0; /* configure data pins as input */
|
||||||
|
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data = PIN(LCD_DATA0_PORT) << 4; /* read high nibble first */
|
||||||
|
lcd_e_low();
|
||||||
|
|
||||||
|
lcd_e_delay(); /* Enable 500ns low */
|
||||||
|
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data |= PIN(LCD_DATA0_PORT) & 0x0F; /* read low nibble */
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure data pins as input */
|
||||||
|
DDR(LCD_DATA0_PORT) &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
|
||||||
|
/* read high nibble first */
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data = 0;
|
||||||
|
if ( PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN) ) data |= 0x10;
|
||||||
|
if ( PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN) ) data |= 0x20;
|
||||||
|
if ( PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN) ) data |= 0x40;
|
||||||
|
if ( PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN) ) data |= 0x80;
|
||||||
|
lcd_e_low();
|
||||||
|
|
||||||
|
lcd_e_delay(); /* Enable 500ns low */
|
||||||
|
|
||||||
|
/* read low nibble */
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
if ( PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN) ) data |= 0x01;
|
||||||
|
if ( PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN) ) data |= 0x02;
|
||||||
|
if ( PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN) ) data |= 0x04;
|
||||||
|
if ( PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN) ) data |= 0x08;
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
return data;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
#define lcd_read(rs) (rs) ? *(volatile uint8_t*)(LCD_IO_DATA+LCD_IO_READ) : *(volatile uint8_t*)(LCD_IO_FUNCTION+LCD_IO_READ)
|
||||||
|
/* rs==0 -> read instruction from LCD_IO_FUNCTION */
|
||||||
|
/* rs==1 -> read data from LCD_IO_DATA */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
loops while lcd is busy, returns address counter
|
||||||
|
*************************************************************************/
|
||||||
|
static uint8_t lcd_waitbusy(void)
|
||||||
|
{
|
||||||
|
/* wait until busy flag is cleared */
|
||||||
|
for (; lcd_read(0) & (1 << LCD_BUSY); );
|
||||||
|
|
||||||
|
/* the address counter is updated 4us after the busy flag is cleared */
|
||||||
|
delay(2);
|
||||||
|
|
||||||
|
/* now read the address counter */
|
||||||
|
return (lcd_read(0)); // return address counter
|
||||||
|
}/* lcd_waitbusy */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Move cursor to the start of next line or to the first line if the cursor
|
||||||
|
is already on the last line.
|
||||||
|
*************************************************************************/
|
||||||
|
static inline void lcd_newline(uint8_t pos)
|
||||||
|
{
|
||||||
|
register uint8_t addressCounter;
|
||||||
|
|
||||||
|
#if LCD_LINES==1
|
||||||
|
addressCounter = 0;
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==2
|
||||||
|
if ( pos < (LCD_START_LINE2) )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==4
|
||||||
|
#if KS0073_4LINES_MODE
|
||||||
|
if ( pos < LCD_START_LINE2 )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else if ( (pos >= LCD_START_LINE2) && (pos < LCD_START_LINE3) )
|
||||||
|
addressCounter = LCD_START_LINE3;
|
||||||
|
else if ( (pos >= LCD_START_LINE3) && (pos < LCD_START_LINE4) )
|
||||||
|
addressCounter = LCD_START_LINE4;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#else
|
||||||
|
if ( pos < LCD_START_LINE3 )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else if ( (pos >= LCD_START_LINE2) && (pos < LCD_START_LINE4) )
|
||||||
|
addressCounter = LCD_START_LINE3;
|
||||||
|
else if ( (pos >= LCD_START_LINE3) && (pos < LCD_START_LINE2) )
|
||||||
|
addressCounter = LCD_START_LINE4;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
lcd_command((1 << LCD_DDRAM) + addressCounter);
|
||||||
|
|
||||||
|
}/* lcd_newline */
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** PUBLIC FUNCTIONS
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Send LCD controller instruction command
|
||||||
|
Input: instruction to send to LCD controller, see HD44780 data sheet
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_command(uint8_t cmd)
|
||||||
|
{
|
||||||
|
lcd_waitbusy();
|
||||||
|
lcd_write(cmd,0);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Send data byte to LCD controller
|
||||||
|
Input: data to send to LCD controller, see HD44780 data sheet
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_data(uint8_t data)
|
||||||
|
{
|
||||||
|
lcd_waitbusy();
|
||||||
|
lcd_write(data,1);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Set cursor to specified position
|
||||||
|
Input: x horizontal position (0: left most position)
|
||||||
|
y vertical position (0: first line)
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_gotoxy(uint8_t x, uint8_t y)
|
||||||
|
{
|
||||||
|
#if LCD_LINES==1
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==2
|
||||||
|
if ( y==0 )
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||||
|
else
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==4
|
||||||
|
if ( y==0 )
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||||
|
else if ( y==1)
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
|
||||||
|
else if ( y==2)
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE3 + x);
|
||||||
|
else /* y==3 */
|
||||||
|
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE4 + x);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
}/* lcd_gotoxy */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
*************************************************************************/
|
||||||
|
int lcd_getxy(void)
|
||||||
|
{
|
||||||
|
return lcd_waitbusy();
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Clear display and set cursor to home position
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_clrscr(void)
|
||||||
|
{
|
||||||
|
lcd_command(1 << LCD_CLR);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Set cursor to home position
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_home(void)
|
||||||
|
{
|
||||||
|
lcd_command(1 << LCD_HOME);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display character at current cursor position
|
||||||
|
Input: character to be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_putc(char c)
|
||||||
|
{
|
||||||
|
uint8_t pos;
|
||||||
|
|
||||||
|
pos = lcd_waitbusy(); // read busy-flag and address counter
|
||||||
|
if (c=='\n')
|
||||||
|
lcd_newline(pos);
|
||||||
|
else
|
||||||
|
{
|
||||||
|
#if LCD_WRAP_LINES==1
|
||||||
|
#if LCD_LINES==1
|
||||||
|
if ( pos == LCD_START_LINE1 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1,0);
|
||||||
|
#elif LCD_LINES==2
|
||||||
|
if ( pos == LCD_START_LINE1 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2,0);
|
||||||
|
else if ( pos == LCD_START_LINE2 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1,0);
|
||||||
|
#elif LCD_LINES==4
|
||||||
|
if ( pos == LCD_START_LINE1 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2,0);
|
||||||
|
else if ( pos == LCD_START_LINE2 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE3,0);
|
||||||
|
else if ( pos == LCD_START_LINE3 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE4,0);
|
||||||
|
else if ( pos == LCD_START_LINE4 + LCD_DISP_LENGTH )
|
||||||
|
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1,0);
|
||||||
|
#endif
|
||||||
|
lcd_waitbusy();
|
||||||
|
#endif
|
||||||
|
lcd_write(c, 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_putc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display string without auto linefeed
|
||||||
|
Input: string to be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_puts(const char *s)
|
||||||
|
/* print string on lcd (no auto linefeed) */
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = *s++) ) {
|
||||||
|
lcd_putc(c);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_puts */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display string from program memory without auto linefeed
|
||||||
|
Input: string from program memory be be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_puts_p(const char *progmem_s)
|
||||||
|
/* print string from program memory on lcd (no auto linefeed) */
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = pgm_read_byte(progmem_s++)) ) {
|
||||||
|
lcd_putc(c);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_puts_p */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Initialize display and select type of cursor
|
||||||
|
Input: dispAttr LCD_DISP_OFF display off
|
||||||
|
LCD_DISP_ON display on, cursor off
|
||||||
|
LCD_DISP_ON_CURSOR display on, cursor on
|
||||||
|
LCD_DISP_CURSOR_BLINK display on, cursor on flashing
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_init(uint8_t dispAttr)
|
||||||
|
{
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/*
|
||||||
|
* Initialize LCD to 4 bit I/O mode
|
||||||
|
*/
|
||||||
|
|
||||||
|
if (
|
||||||
|
( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
&& ( &LCD_RS_PORT == &LCD_DATA0_PORT) && ( &LCD_RW_PORT == &LCD_DATA0_PORT) && (&LCD_E_PORT == &LCD_DATA0_PORT)
|
||||||
|
)
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (all LCD lines on same port) */
|
||||||
|
DDR(LCD_DATA0_PORT) |= (1 << LCD_DATA0_PIN) | (1 << LCD_DATA1_PIN) | (1 << LCD_DATA2_PIN) | (1 << LCD_DATA3_PIN) | (1 << LCD_RS_PIN) | (1 << LCD_RW_PIN) | (1 << LCD_E_PIN);
|
||||||
|
}
|
||||||
|
else if (
|
||||||
|
( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
)
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (all LCD data lines on same port, but control lines on different ports) */
|
||||||
|
DDR(LCD_DATA0_PORT) |= (1 << LCD_DATA0_PIN) | (1 << LCD_DATA1_PIN) | (1 << LCD_DATA2_PIN) | (1 << LCD_DATA3_PIN);
|
||||||
|
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||||
|
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||||
|
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (LCD data and control lines on different ports */
|
||||||
|
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||||
|
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||||
|
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||||
|
DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||||
|
}
|
||||||
|
delay(16000); /* wait 16ms or more after power-on */
|
||||||
|
|
||||||
|
/* initial write to lcd is 8bit */
|
||||||
|
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN); // _BV(LCD_FUNCTION)>>4;
|
||||||
|
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN); // _BV(LCD_FUNCTION_8BIT)>>4;
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(4992); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* repeat last command */
|
||||||
|
lcd_e_toggle(); delay(64); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* repeat last command a third time */
|
||||||
|
lcd_e_toggle(); delay(64); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* now configure for 4bit mode */
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN); // LCD_FUNCTION_4BIT_1LINE>>4
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(64); /* some displays need this additional delay */
|
||||||
|
|
||||||
|
/* from now the LCD only accepts 4 bit I/O, we can use lcd_command() */
|
||||||
|
#else
|
||||||
|
/*
|
||||||
|
* Initialize LCD to 8 bit memory mapped mode
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* enable external SRAM (memory mapped lcd) and one wait state */
|
||||||
|
MCUCR = _BV(SRE) | _BV(SRW);
|
||||||
|
|
||||||
|
/* reset LCD */
|
||||||
|
delay(16000); /* wait 16ms after power-on */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(4992); /* wait 5ms */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(64); /* wait 64us */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(64); /* wait 64us */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if KS0073_4LINES_MODE
|
||||||
|
/* Display with KS0073 controller requires special commands for enabling 4 line mode */
|
||||||
|
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_ON);
|
||||||
|
lcd_command(KS0073_4LINES_MODE);
|
||||||
|
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_OFF);
|
||||||
|
#else
|
||||||
|
lcd_command(LCD_FUNCTION_DEFAULT); /* function set: display lines */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
lcd_command(LCD_DISP_OFF); /* display off */
|
||||||
|
lcd_clrscr(); /* display clear */
|
||||||
|
lcd_command(LCD_MODE_DEFAULT); /* set entry mode */
|
||||||
|
lcd_command(dispAttr); /* display/cursor control */
|
||||||
|
|
||||||
|
}/* lcd_init */
|
||||||
|
|
@ -0,0 +1,263 @@
|
||||||
|
#ifndef LCD_H
|
||||||
|
#define LCD_H
|
||||||
|
/*************************************************************************
|
||||||
|
Title : C include file for the HD44780U LCD library (lcd.c)
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: lcd.h,v 1.13.2.2 2006/01/30 19:51:33 peter Exp $
|
||||||
|
Software: AVR-GCC 3.3
|
||||||
|
Hardware: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@defgroup pfleury_lcd LCD library
|
||||||
|
@code #include <lcd.h> @endcode
|
||||||
|
|
||||||
|
@brief Basic routines for interfacing a HD44780U-based text LCD display
|
||||||
|
|
||||||
|
Originally based on Volker Oth's LCD library,
|
||||||
|
changed lcd_init(), added additional constants for lcd_command(),
|
||||||
|
added 4-bit I/O mode, improved and optimized code.
|
||||||
|
|
||||||
|
Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
|
||||||
|
4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
|
||||||
|
|
||||||
|
Memory mapped mode compatible with Kanda STK200, but supports also
|
||||||
|
generation of R/W signal through A8 address line.
|
||||||
|
|
||||||
|
@author Peter Fleury pfleury@gmx.ch http://jump.to/fleury
|
||||||
|
|
||||||
|
@see The chapter <a href="http://homepage.sunrise.ch/mysunrise/peterfleury/avr-lcd44780.html" target="_blank">Interfacing a HD44780 Based LCD to an AVR</a>
|
||||||
|
on my home page.
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*@{*/
|
||||||
|
|
||||||
|
#if (__GNUC__ * 100 + __GNUC_MINOR__) < 303
|
||||||
|
#error "This library requires AVR-GCC 3.3 or later, update to newer AVR-GCC compiler !"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <inttypes.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for MCU Clock Frequency
|
||||||
|
* Adapt the MCU clock frequency in Hz to your target.
|
||||||
|
*/
|
||||||
|
#define XTAL F_CPU /**< clock frequency in Hz, used to calculate delay timer */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definition for LCD controller type
|
||||||
|
* Use 0 for HD44780 controller, change to 1 for displays with KS0073 controller.
|
||||||
|
*/
|
||||||
|
#define LCD_CONTROLLER_KS0073 0 /**< Use 0 for HD44780 controller, 1 for KS0073 controller */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for Display Size
|
||||||
|
* Change these definitions to adapt setting to your display
|
||||||
|
*/
|
||||||
|
#define LCD_LINES 2 /**< number of visible lines of the display */
|
||||||
|
#define LCD_DISP_LENGTH 16 /**< visibles characters per line of the display */
|
||||||
|
#define LCD_LINE_LENGTH 0x40 /**< internal line length of the display */
|
||||||
|
#define LCD_START_LINE1 0x00 /**< DDRAM address of first char of line 1 */
|
||||||
|
#define LCD_START_LINE2 0x40 /**< DDRAM address of first char of line 2 */
|
||||||
|
#define LCD_START_LINE3 0x14 /**< DDRAM address of first char of line 3 */
|
||||||
|
#define LCD_START_LINE4 0x54 /**< DDRAM address of first char of line 4 */
|
||||||
|
#define LCD_WRAP_LINES 0 /**< 0: no wrap, 1: wrap at end of visibile line */
|
||||||
|
|
||||||
|
#define LCD_IO_MODE 1 /**< 0: memory mapped mode, 1: IO port mode */
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/**
|
||||||
|
* @name Definitions for 4-bit IO mode
|
||||||
|
* Change LCD_PORT if you want to use a different port for the LCD pins.
|
||||||
|
*
|
||||||
|
* The four LCD data lines and the three control lines RS, RW, E can be on the
|
||||||
|
* same port or on different ports.
|
||||||
|
* Change LCD_RS_PORT, LCD_RW_PORT, LCD_E_PORT if you want the control lines on
|
||||||
|
* different ports.
|
||||||
|
*
|
||||||
|
* Normally the four data lines should be mapped to bit 0..3 on one port, but it
|
||||||
|
* is possible to connect these data lines in different order or even on different
|
||||||
|
* ports by adapting the LCD_DATAx_PORT and LCD_DATAx_PIN definitions.
|
||||||
|
* */
|
||||||
|
#define LCD_PORT PORTB /**< port for the LCD lines */
|
||||||
|
#define LCD_DATA0_PORT LCD_PORT /**< port for 4bit data bit 0 */
|
||||||
|
#define LCD_DATA1_PORT LCD_PORT /**< port for 4bit data bit 1 */
|
||||||
|
#define LCD_DATA2_PORT LCD_PORT /**< port for 4bit data bit 2 */
|
||||||
|
#define LCD_DATA3_PORT LCD_PORT /**< port for 4bit data bit 3 */
|
||||||
|
#define LCD_DATA0_PIN 0 /**< pin for 4bit data bit 0 */
|
||||||
|
#define LCD_DATA1_PIN 1 /**< pin for 4bit data bit 1 */
|
||||||
|
#define LCD_DATA2_PIN 2 /**< pin for 4bit data bit 2 */
|
||||||
|
#define LCD_DATA3_PIN 3 /**< pin for 4bit data bit 3 */
|
||||||
|
#define LCD_RS_PORT PORTD /**< port for RS line */
|
||||||
|
#define LCD_RS_PIN 2 /**< pin for RS line */
|
||||||
|
#define LCD_RW_PORT PORTD /**< port for RW line */
|
||||||
|
#define LCD_RW_PIN 3 /**< pin for RW line */
|
||||||
|
#define LCD_E_PORT PORTD /**< port for Enable line */
|
||||||
|
#define LCD_E_PIN 4 /**< pin for Enable line */
|
||||||
|
|
||||||
|
#elif defined(__AVR_AT90S4414__) || defined(__AVR_AT90S8515__) || defined(__AVR_ATmega64__) || \
|
||||||
|
defined(__AVR_ATmega8515__)|| defined(__AVR_ATmega103__) || defined(__AVR_ATmega128__) || \
|
||||||
|
defined(__AVR_ATmega161__) || defined(__AVR_ATmega162__)
|
||||||
|
/*
|
||||||
|
* memory mapped mode is only supported when the device has an external data memory interface
|
||||||
|
*/
|
||||||
|
#define LCD_IO_DATA 0xC000 /* A15=E=1, A14=RS=1 */
|
||||||
|
#define LCD_IO_FUNCTION 0x8000 /* A15=E=1, A14=RS=0 */
|
||||||
|
#define LCD_IO_READ 0x0100 /* A8 =R/W=1 (R/W: 1=Read, 0=Write */
|
||||||
|
#else
|
||||||
|
#error "external data memory interface not available for this device, use 4-bit IO port mode"
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for LCD command instructions
|
||||||
|
* The constants define the various LCD controller instructions which can be passed to the
|
||||||
|
* function lcd_command(), see HD44780 data sheet for a complete description.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* instruction register bit positions, see HD44780U data sheet */
|
||||||
|
#define LCD_CLR 0 /* DB0: clear display */
|
||||||
|
#define LCD_HOME 1 /* DB1: return to home position */
|
||||||
|
#define LCD_ENTRY_MODE 2 /* DB2: set entry mode */
|
||||||
|
#define LCD_ENTRY_INC 1 /* DB1: 1=increment, 0=decrement */
|
||||||
|
#define LCD_ENTRY_SHIFT 0 /* DB2: 1=display shift on */
|
||||||
|
#define LCD_ON 3 /* DB3: turn lcd/cursor on */
|
||||||
|
#define LCD_ON_DISPLAY 2 /* DB2: turn display on */
|
||||||
|
#define LCD_ON_CURSOR 1 /* DB1: turn cursor on */
|
||||||
|
#define LCD_ON_BLINK 0 /* DB0: blinking cursor ? */
|
||||||
|
#define LCD_MOVE 4 /* DB4: move cursor/display */
|
||||||
|
#define LCD_MOVE_DISP 3 /* DB3: move display (0-> cursor) ? */
|
||||||
|
#define LCD_MOVE_RIGHT 2 /* DB2: move right (0-> left) ? */
|
||||||
|
#define LCD_FUNCTION 5 /* DB5: function set */
|
||||||
|
#define LCD_FUNCTION_8BIT 4 /* DB4: set 8BIT mode (0->4BIT mode) */
|
||||||
|
#define LCD_FUNCTION_2LINES 3 /* DB3: two lines (0->one line) */
|
||||||
|
#define LCD_FUNCTION_10DOTS 2 /* DB2: 5x10 font (0->5x7 font) */
|
||||||
|
#define LCD_CGRAM 6 /* DB6: set CG RAM address */
|
||||||
|
#define LCD_DDRAM 7 /* DB7: set DD RAM address */
|
||||||
|
#define LCD_BUSY 7 /* DB7: LCD is busy */
|
||||||
|
|
||||||
|
/* set entry mode: display shift on/off, dec/inc cursor move direction */
|
||||||
|
#define LCD_ENTRY_DEC 0x04 /* display shift off, dec cursor move dir */
|
||||||
|
#define LCD_ENTRY_DEC_SHIFT 0x05 /* display shift on, dec cursor move dir */
|
||||||
|
#define LCD_ENTRY_INC_ 0x06 /* display shift off, inc cursor move dir */
|
||||||
|
#define LCD_ENTRY_INC_SHIFT 0x07 /* display shift on, inc cursor move dir */
|
||||||
|
|
||||||
|
/* display on/off, cursor on/off, blinking char at cursor position */
|
||||||
|
#define LCD_DISP_OFF 0x08 /* display off */
|
||||||
|
#define LCD_DISP_ON 0x0C /* display on, cursor off */
|
||||||
|
#define LCD_DISP_ON_BLINK 0x0D /* display on, cursor off, blink char */
|
||||||
|
#define LCD_DISP_ON_CURSOR 0x0E /* display on, cursor on */
|
||||||
|
#define LCD_DISP_ON_CURSOR_BLINK 0x0F /* display on, cursor on, blink char */
|
||||||
|
|
||||||
|
/* move cursor/shift display */
|
||||||
|
#define LCD_MOVE_CURSOR_LEFT 0x10 /* move cursor left (decrement) */
|
||||||
|
#define LCD_MOVE_CURSOR_RIGHT 0x14 /* move cursor right (increment) */
|
||||||
|
#define LCD_MOVE_DISP_LEFT 0x18 /* shift display left */
|
||||||
|
#define LCD_MOVE_DISP_RIGHT 0x1C /* shift display right */
|
||||||
|
|
||||||
|
/* function set: set interface data length and number of display lines */
|
||||||
|
#define LCD_FUNCTION_4BIT_1LINE 0x20 /* 4-bit interface, single line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_4BIT_2LINES 0x28 /* 4-bit interface, dual line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_8BIT_1LINE 0x30 /* 8-bit interface, single line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_8BIT_2LINES 0x38 /* 8-bit interface, dual line, 5x7 dots */
|
||||||
|
|
||||||
|
|
||||||
|
#define LCD_MODE_DEFAULT ((1<<LCD_ENTRY_MODE) | (1<<LCD_ENTRY_INC) )
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Functions
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Initialize display and select type of cursor
|
||||||
|
@param dispAttr \b LCD_DISP_OFF display off\n
|
||||||
|
\b LCD_DISP_ON display on, cursor off\n
|
||||||
|
\b LCD_DISP_ON_CURSOR display on, cursor on\n
|
||||||
|
\b LCD_DISP_ON_CURSOR_BLINK display on, cursor on flashing
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_init(uint8_t dispAttr);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Clear display and set cursor to home position
|
||||||
|
@param void
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_clrscr(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Set cursor to home position
|
||||||
|
@param void
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_home(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Set cursor to specified position
|
||||||
|
|
||||||
|
@param x horizontal position\n (0: left most position)
|
||||||
|
@param y vertical position\n (0: first line)
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_gotoxy(uint8_t x, uint8_t y);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display character at current cursor position
|
||||||
|
@param c character to be displayed
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_putc(char c);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display string without auto linefeed
|
||||||
|
@param s string to be displayed
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_puts(const char *s);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display string from program memory without auto linefeed
|
||||||
|
@param s string from program memory be be displayed
|
||||||
|
@return none
|
||||||
|
@see lcd_puts_P
|
||||||
|
*/
|
||||||
|
void lcd_puts_p(const char *progmem_s);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Send LCD controller instruction command
|
||||||
|
@param cmd instruction to send to LCD controller, see HD44780 data sheet
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_command(uint8_t cmd);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Send data byte to LCD controller
|
||||||
|
|
||||||
|
Similar to lcd_putc(), but without interpreting LF
|
||||||
|
@param data byte to send to LCD controller, see HD44780 data sheet
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
void lcd_data(uint8_t data);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief macros for automatically storing string constant in program memory
|
||||||
|
*/
|
||||||
|
#define lcd_puts_P(__s) lcd_puts_p(PSTR(__s))
|
||||||
|
|
||||||
|
/*@}*/
|
||||||
|
#endif //LCD_H
|
||||||
Binary file not shown.
|
|
@ -0,0 +1,49 @@
|
||||||
|
H1 { text-align: center; }
|
||||||
|
CAPTION { font-weight: bold }
|
||||||
|
A.qindex {}
|
||||||
|
A.qindexRef {}
|
||||||
|
A.el { text-decoration: none; font-weight: bold }
|
||||||
|
A.elRef { font-weight: bold }
|
||||||
|
A.code { text-decoration: none; font-weight: normal; color: #4444ee }
|
||||||
|
A.codeRef { font-weight: normal; color: #4444ee }
|
||||||
|
A:hover { text-decoration: none; background-color: #f2f2ff }
|
||||||
|
DL.el { margin-left: -1cm }
|
||||||
|
DIV.fragment { width: 100%; border: none; background-color: #eeeeee }
|
||||||
|
DIV.ah { background-color: black; font-weight: bold; color: #ffffff; margin-bottom: 3px; margin-top: 3px }
|
||||||
|
TD.md { background-color: #f2f2ff; font-weight: bold; }
|
||||||
|
TD.mdname1 { background-color: #f2f2ff; font-weight: bold; color: #602020; }
|
||||||
|
TD.mdname { background-color: #f2f2ff; font-weight: bold; color: #602020; width: 600px; }
|
||||||
|
DIV.groupHeader { margin-left: 16px; margin-top: 12px; margin-bottom: 6px; font-weight: bold }
|
||||||
|
DIV.groupText { margin-left: 16px; font-style: italic; font-size: smaller }
|
||||||
|
BODY { background: white; color: black }
|
||||||
|
TD.indexkey {
|
||||||
|
background-color: #eeeeff;
|
||||||
|
font-weight: bold;
|
||||||
|
padding-right : 10px;
|
||||||
|
padding-top : 2px;
|
||||||
|
padding-left : 10px;
|
||||||
|
padding-bottom : 2px;
|
||||||
|
margin-left : 0px;
|
||||||
|
margin-right : 0px;
|
||||||
|
margin-top : 2px;
|
||||||
|
margin-bottom : 2px
|
||||||
|
}
|
||||||
|
TD.indexvalue {
|
||||||
|
background-color: #eeeeff;
|
||||||
|
font-style: italic;
|
||||||
|
padding-right : 10px;
|
||||||
|
padding-top : 2px;
|
||||||
|
padding-left : 10px;
|
||||||
|
padding-bottom : 2px;
|
||||||
|
margin-left : 0px;
|
||||||
|
margin-right : 0px;
|
||||||
|
margin-top : 2px;
|
||||||
|
margin-bottom : 2px
|
||||||
|
}
|
||||||
|
span.keyword { color: #008000 }
|
||||||
|
span.keywordtype { color: #604020 }
|
||||||
|
span.keywordflow { color: #e08000 }
|
||||||
|
span.comment { color: #800000 }
|
||||||
|
span.preprocessor { color: #806020 }
|
||||||
|
span.stringliteral { color: #002080 }
|
||||||
|
span.charliteral { color: #008080 }
|
||||||
Binary file not shown.
|
After Width: | Height: | Size: 1.3 KiB |
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,609 @@
|
||||||
|
/****************************************************************************
|
||||||
|
Title : HD44780U LCD library
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: lcd.c,v 1.14.2.1 2006/01/29 12:16:41 peter Exp $
|
||||||
|
Software: AVR-GCC 3.3
|
||||||
|
Target: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
|
||||||
|
|
||||||
|
DESCRIPTION
|
||||||
|
Basic routines for interfacing a HD44780U-based text lcd display
|
||||||
|
|
||||||
|
Originally based on Volker Oth's lcd library,
|
||||||
|
changed lcd_init(), added additional constants for lcd_command(),
|
||||||
|
added 4-bit I/O mode, improved and optimized code.
|
||||||
|
|
||||||
|
Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
|
||||||
|
4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
|
||||||
|
|
||||||
|
Memory mapped mode compatible with Kanda STK200, but supports also
|
||||||
|
generation of R/W signal through A8 address line.
|
||||||
|
|
||||||
|
USAGE
|
||||||
|
See the C include lcd.h file for a description of each function
|
||||||
|
|
||||||
|
*****************************************************************************/
|
||||||
|
#include <inttypes.h>
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
#include "lcd.h"
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** constants/macros
|
||||||
|
*/
|
||||||
|
#define DDR(x) (*(&x - 1)) /* address of data direction register of port x */
|
||||||
|
#if defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
|
||||||
|
/* on ATmega64/128 PINF is on port 0x00 and not 0x60 */
|
||||||
|
#define PIN(x) ( &PORTF==&(x) ? _SFR_IO8(0x00) : (*(&x - 2)) )
|
||||||
|
#else
|
||||||
|
#define PIN(x) (*(&x - 2)) /* address of input register of port x */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
#define lcd_e_delay() __asm__ __volatile__( "rjmp 1f\n 1:" );
|
||||||
|
#define lcd_e_high() LCD_E_PORT |= _BV(LCD_E_PIN);
|
||||||
|
#define lcd_e_low() LCD_E_PORT &= ~_BV(LCD_E_PIN);
|
||||||
|
#define lcd_e_toggle() toggle_e()
|
||||||
|
#define lcd_rw_high() LCD_RW_PORT |= _BV(LCD_RW_PIN)
|
||||||
|
#define lcd_rw_low() LCD_RW_PORT &= ~_BV(LCD_RW_PIN)
|
||||||
|
#define lcd_rs_high() LCD_RS_PORT |= _BV(LCD_RS_PIN)
|
||||||
|
#define lcd_rs_low() LCD_RS_PORT &= ~_BV(LCD_RS_PIN)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
#if LCD_LINES==1
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_1LINE
|
||||||
|
#else
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_2LINES
|
||||||
|
#endif
|
||||||
|
#else
|
||||||
|
#if LCD_LINES==1
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_1LINE
|
||||||
|
#else
|
||||||
|
#define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_2LINES
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if LCD_CONTROLLER_KS0073
|
||||||
|
#if LCD_LINES==4
|
||||||
|
|
||||||
|
#define KS0073_EXTENDED_FUNCTION_REGISTER_ON 0x24 /* |0|010|0100 4-bit mode extension-bit RE = 1 */
|
||||||
|
#define KS0073_EXTENDED_FUNCTION_REGISTER_OFF 0x20 /* |0|000|1001 4 lines mode */
|
||||||
|
#define KS0073_4LINES_MODE 0x09 /* |0|001|0000 4-bit mode, extension-bit RE = 0 */
|
||||||
|
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
** function prototypes
|
||||||
|
*/
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
static void toggle_e(void);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
** local functions
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
delay loop for small accurate delays: 16-bit counter, 4 cycles/loop
|
||||||
|
*************************************************************************/
|
||||||
|
static inline void _delayFourCycles(unsigned int __count)
|
||||||
|
{
|
||||||
|
if ( __count == 0 )
|
||||||
|
__asm__ __volatile__( "rjmp 1f\n 1:" ); // 2 cycles
|
||||||
|
else
|
||||||
|
__asm__ __volatile__ (
|
||||||
|
"1: sbiw %0,1" "\n\t"
|
||||||
|
"brne 1b" // 4 cycles/loop
|
||||||
|
: "=w" (__count)
|
||||||
|
: "0" (__count)
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
delay for a minimum of <us> microseconds
|
||||||
|
the number of loops is calculated at compile-time from MCU clock frequency
|
||||||
|
*************************************************************************/
|
||||||
|
#define delay(us) _delayFourCycles( ( ( 1*(XTAL/4000) )*us)/1000 )
|
||||||
|
|
||||||
|
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/* toggle Enable Pin to initiate write */
|
||||||
|
static void toggle_e(void)
|
||||||
|
{
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Low-level function to write byte to LCD controller
|
||||||
|
Input: data byte to write to LCD
|
||||||
|
rs 1: write data
|
||||||
|
0: write instruction
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
static void lcd_write(uint8_t data,uint8_t rs)
|
||||||
|
{
|
||||||
|
unsigned char dataBits ;
|
||||||
|
|
||||||
|
|
||||||
|
if (rs) { /* write data (RS=1, RW=0) */
|
||||||
|
lcd_rs_high();
|
||||||
|
} else { /* write instruction (RS=0, RW=0) */
|
||||||
|
lcd_rs_low();
|
||||||
|
}
|
||||||
|
lcd_rw_low();
|
||||||
|
|
||||||
|
if ( ( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
&& (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3) )
|
||||||
|
{
|
||||||
|
/* configure data pins as output */
|
||||||
|
DDR(LCD_DATA0_PORT) |= 0x0F;
|
||||||
|
|
||||||
|
/* output high nibble first */
|
||||||
|
dataBits = LCD_DATA0_PORT & 0xF0;
|
||||||
|
LCD_DATA0_PORT = dataBits |((data>>4)&0x0F);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* output low nibble */
|
||||||
|
LCD_DATA0_PORT = dataBits | (data&0x0F);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* all data pins high (inactive) */
|
||||||
|
LCD_DATA0_PORT = dataBits | 0x0F;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure data pins as output */
|
||||||
|
DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||||
|
|
||||||
|
/* output high nibble first */
|
||||||
|
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
if(data & 0x80) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
if(data & 0x40) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
if(data & 0x20) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
if(data & 0x10) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* output low nibble */
|
||||||
|
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
if(data & 0x08) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
if(data & 0x04) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
if(data & 0x02) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
if(data & 0x01) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
lcd_e_toggle();
|
||||||
|
|
||||||
|
/* all data pins high (inactive) */
|
||||||
|
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||||
|
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||||
|
LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||||
|
LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
#define lcd_write(d,rs) if (rs) *(volatile uint8_t*)(LCD_IO_DATA) = d; else *(volatile uint8_t*)(LCD_IO_FUNCTION) = d;
|
||||||
|
/* rs==0 -> write instruction to LCD_IO_FUNCTION */
|
||||||
|
/* rs==1 -> write data to LCD_IO_DATA */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Low-level function to read byte from LCD controller
|
||||||
|
Input: rs 1: read data
|
||||||
|
0: read busy flag / address counter
|
||||||
|
Returns: byte read from LCD controller
|
||||||
|
*************************************************************************/
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
static uint8_t lcd_read(uint8_t rs)
|
||||||
|
{
|
||||||
|
uint8_t data;
|
||||||
|
|
||||||
|
|
||||||
|
if (rs)
|
||||||
|
lcd_rs_high(); /* RS=1: read data */
|
||||||
|
else
|
||||||
|
lcd_rs_low(); /* RS=0: read busy flag */
|
||||||
|
lcd_rw_high(); /* RW=1 read mode */
|
||||||
|
|
||||||
|
if ( ( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
&& ( LCD_DATA0_PIN == 0 )&& (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3) )
|
||||||
|
{
|
||||||
|
DDR(LCD_DATA0_PORT) &= 0xF0; /* configure data pins as input */
|
||||||
|
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data = PIN(LCD_DATA0_PORT) << 4; /* read high nibble first */
|
||||||
|
lcd_e_low();
|
||||||
|
|
||||||
|
lcd_e_delay(); /* Enable 500ns low */
|
||||||
|
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data |= PIN(LCD_DATA0_PORT)&0x0F; /* read low nibble */
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure data pins as input */
|
||||||
|
DDR(LCD_DATA0_PORT) &= ~_BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) &= ~_BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) &= ~_BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) &= ~_BV(LCD_DATA3_PIN);
|
||||||
|
|
||||||
|
/* read high nibble first */
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
data = 0;
|
||||||
|
if ( PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN) ) data |= 0x10;
|
||||||
|
if ( PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN) ) data |= 0x20;
|
||||||
|
if ( PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN) ) data |= 0x40;
|
||||||
|
if ( PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN) ) data |= 0x80;
|
||||||
|
lcd_e_low();
|
||||||
|
|
||||||
|
lcd_e_delay(); /* Enable 500ns low */
|
||||||
|
|
||||||
|
/* read low nibble */
|
||||||
|
lcd_e_high();
|
||||||
|
lcd_e_delay();
|
||||||
|
if ( PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN) ) data |= 0x01;
|
||||||
|
if ( PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN) ) data |= 0x02;
|
||||||
|
if ( PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN) ) data |= 0x04;
|
||||||
|
if ( PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN) ) data |= 0x08;
|
||||||
|
lcd_e_low();
|
||||||
|
}
|
||||||
|
return data;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
#define lcd_read(rs) (rs) ? *(volatile uint8_t*)(LCD_IO_DATA+LCD_IO_READ) : *(volatile uint8_t*)(LCD_IO_FUNCTION+LCD_IO_READ)
|
||||||
|
/* rs==0 -> read instruction from LCD_IO_FUNCTION */
|
||||||
|
/* rs==1 -> read data from LCD_IO_DATA */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
loops while lcd is busy, returns address counter
|
||||||
|
*************************************************************************/
|
||||||
|
static uint8_t lcd_waitbusy(void)
|
||||||
|
|
||||||
|
{
|
||||||
|
register uint8_t c;
|
||||||
|
|
||||||
|
/* wait until busy flag is cleared */
|
||||||
|
while ( (c=lcd_read(0)) & (1<<LCD_BUSY)) {}
|
||||||
|
|
||||||
|
/* the address counter is updated 4us after the busy flag is cleared */
|
||||||
|
delay(2);
|
||||||
|
|
||||||
|
/* now read the address counter */
|
||||||
|
return (lcd_read(0)); // return address counter
|
||||||
|
|
||||||
|
}/* lcd_waitbusy */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Move cursor to the start of next line or to the first line if the cursor
|
||||||
|
is already on the last line.
|
||||||
|
*************************************************************************/
|
||||||
|
static inline void lcd_newline(uint8_t pos)
|
||||||
|
{
|
||||||
|
register uint8_t addressCounter;
|
||||||
|
|
||||||
|
|
||||||
|
#if LCD_LINES==1
|
||||||
|
addressCounter = 0;
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==2
|
||||||
|
if ( pos < (LCD_START_LINE2) )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==4
|
||||||
|
#if KS0073_4LINES_MODE
|
||||||
|
if ( pos < LCD_START_LINE2 )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else if ( (pos >= LCD_START_LINE2) && (pos < LCD_START_LINE3) )
|
||||||
|
addressCounter = LCD_START_LINE3;
|
||||||
|
else if ( (pos >= LCD_START_LINE3) && (pos < LCD_START_LINE4) )
|
||||||
|
addressCounter = LCD_START_LINE4;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#else
|
||||||
|
if ( pos < LCD_START_LINE3 )
|
||||||
|
addressCounter = LCD_START_LINE2;
|
||||||
|
else if ( (pos >= LCD_START_LINE2) && (pos < LCD_START_LINE4) )
|
||||||
|
addressCounter = LCD_START_LINE3;
|
||||||
|
else if ( (pos >= LCD_START_LINE3) && (pos < LCD_START_LINE2) )
|
||||||
|
addressCounter = LCD_START_LINE4;
|
||||||
|
else
|
||||||
|
addressCounter = LCD_START_LINE1;
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
lcd_command((1<<LCD_DDRAM)+addressCounter);
|
||||||
|
|
||||||
|
}/* lcd_newline */
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** PUBLIC FUNCTIONS
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Send LCD controller instruction command
|
||||||
|
Input: instruction to send to LCD controller, see HD44780 data sheet
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_command(uint8_t cmd)
|
||||||
|
{
|
||||||
|
lcd_waitbusy();
|
||||||
|
lcd_write(cmd,0);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Send data byte to LCD controller
|
||||||
|
Input: data to send to LCD controller, see HD44780 data sheet
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_data(uint8_t data)
|
||||||
|
{
|
||||||
|
lcd_waitbusy();
|
||||||
|
lcd_write(data,1);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Set cursor to specified position
|
||||||
|
Input: x horizontal position (0: left most position)
|
||||||
|
y vertical position (0: first line)
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_gotoxy(uint8_t x, uint8_t y)
|
||||||
|
{
|
||||||
|
#if LCD_LINES==1
|
||||||
|
lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+x);
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==2
|
||||||
|
if ( y==0 )
|
||||||
|
lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+x);
|
||||||
|
else
|
||||||
|
lcd_command((1<<LCD_DDRAM)+LCD_START_LINE2+x);
|
||||||
|
#endif
|
||||||
|
#if LCD_LINES==4
|
||||||
|
if ( y==0 )
|
||||||
|
lcd_command((1<<LCD_DDRAM)+LCD_START_LINE1+x);
|
||||||
|
else if ( y==1)
|
||||||
|
lcd_command((1<<LCD_DDRAM)+LCD_START_LINE2+x);
|
||||||
|
else if ( y==2)
|
||||||
|
lcd_command((1<<LCD_DDRAM)+LCD_START_LINE3+x);
|
||||||
|
else /* y==3 */
|
||||||
|
lcd_command((1<<LCD_DDRAM)+LCD_START_LINE4+x);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
}/* lcd_gotoxy */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
*************************************************************************/
|
||||||
|
int lcd_getxy(void)
|
||||||
|
{
|
||||||
|
return lcd_waitbusy();
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Clear display and set cursor to home position
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_clrscr(void)
|
||||||
|
{
|
||||||
|
lcd_command(1<<LCD_CLR);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Set cursor to home position
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_home(void)
|
||||||
|
{
|
||||||
|
lcd_command(1<<LCD_HOME);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display character at current cursor position
|
||||||
|
Input: character to be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_putc(char c)
|
||||||
|
{
|
||||||
|
uint8_t pos;
|
||||||
|
|
||||||
|
|
||||||
|
pos = lcd_waitbusy(); // read busy-flag and address counter
|
||||||
|
if (c=='\n')
|
||||||
|
{
|
||||||
|
lcd_newline(pos);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
#if LCD_WRAP_LINES==1
|
||||||
|
#if LCD_LINES==1
|
||||||
|
if ( pos == LCD_START_LINE1+LCD_DISP_LENGTH ) {
|
||||||
|
lcd_write((1<<LCD_DDRAM)+LCD_START_LINE1,0);
|
||||||
|
}
|
||||||
|
#elif LCD_LINES==2
|
||||||
|
if ( pos == LCD_START_LINE1+LCD_DISP_LENGTH ) {
|
||||||
|
lcd_write((1<<LCD_DDRAM)+LCD_START_LINE2,0);
|
||||||
|
}else if ( pos == LCD_START_LINE2+LCD_DISP_LENGTH ){
|
||||||
|
lcd_write((1<<LCD_DDRAM)+LCD_START_LINE1,0);
|
||||||
|
}
|
||||||
|
#elif LCD_LINES==4
|
||||||
|
if ( pos == LCD_START_LINE1+LCD_DISP_LENGTH ) {
|
||||||
|
lcd_write((1<<LCD_DDRAM)+LCD_START_LINE2,0);
|
||||||
|
}else if ( pos == LCD_START_LINE2+LCD_DISP_LENGTH ) {
|
||||||
|
lcd_write((1<<LCD_DDRAM)+LCD_START_LINE3,0);
|
||||||
|
}else if ( pos == LCD_START_LINE3+LCD_DISP_LENGTH ) {
|
||||||
|
lcd_write((1<<LCD_DDRAM)+LCD_START_LINE4,0);
|
||||||
|
}else if ( pos == LCD_START_LINE4+LCD_DISP_LENGTH ) {
|
||||||
|
lcd_write((1<<LCD_DDRAM)+LCD_START_LINE1,0);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
lcd_waitbusy();
|
||||||
|
#endif
|
||||||
|
lcd_write(c, 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_putc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display string without auto linefeed
|
||||||
|
Input: string to be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_puts(const char *s)
|
||||||
|
/* print string on lcd (no auto linefeed) */
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = *s++) ) {
|
||||||
|
lcd_putc(c);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_puts */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Display string from program memory without auto linefeed
|
||||||
|
Input: string from program memory be be displayed
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_puts_p(const char *progmem_s)
|
||||||
|
/* print string from program memory on lcd (no auto linefeed) */
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = pgm_read_byte(progmem_s++)) ) {
|
||||||
|
lcd_putc(c);
|
||||||
|
}
|
||||||
|
|
||||||
|
}/* lcd_puts_p */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Initialize display and select type of cursor
|
||||||
|
Input: dispAttr LCD_DISP_OFF display off
|
||||||
|
LCD_DISP_ON display on, cursor off
|
||||||
|
LCD_DISP_ON_CURSOR display on, cursor on
|
||||||
|
LCD_DISP_CURSOR_BLINK display on, cursor on flashing
|
||||||
|
Returns: none
|
||||||
|
*************************************************************************/
|
||||||
|
void lcd_init(uint8_t dispAttr)
|
||||||
|
{
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/*
|
||||||
|
* Initialize LCD to 4 bit I/O mode
|
||||||
|
*/
|
||||||
|
|
||||||
|
if ( ( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
&& ( &LCD_RS_PORT == &LCD_DATA0_PORT) && ( &LCD_RW_PORT == &LCD_DATA0_PORT) && (&LCD_E_PORT == &LCD_DATA0_PORT)
|
||||||
|
&& (LCD_DATA0_PIN == 0 ) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)
|
||||||
|
&& (LCD_RS_PIN == 4 ) && (LCD_RW_PIN == 5) && (LCD_E_PIN == 6 ) )
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (all LCD lines on same port) */
|
||||||
|
DDR(LCD_DATA0_PORT) |= 0x7F;
|
||||||
|
}
|
||||||
|
else if ( ( &LCD_DATA0_PORT == &LCD_DATA1_PORT) && ( &LCD_DATA1_PORT == &LCD_DATA2_PORT ) && ( &LCD_DATA2_PORT == &LCD_DATA3_PORT )
|
||||||
|
&& (LCD_DATA0_PIN == 0 ) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3) )
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (all LCD data lines on same port, but control lines on different ports) */
|
||||||
|
DDR(LCD_DATA0_PORT) |= 0x0F;
|
||||||
|
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||||
|
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||||
|
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* configure all port bits as output (LCD data and control lines on different ports */
|
||||||
|
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||||
|
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||||
|
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||||
|
DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
|
||||||
|
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||||
|
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||||
|
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||||
|
}
|
||||||
|
delay(16000); /* wait 16ms or more after power-on */
|
||||||
|
|
||||||
|
/* initial write to lcd is 8bit */
|
||||||
|
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN); // _BV(LCD_FUNCTION)>>4;
|
||||||
|
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN); // _BV(LCD_FUNCTION_8BIT)>>4;
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(4992); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* repeat last command */
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(64); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* repeat last command a third time */
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(64); /* delay, busy flag can't be checked here */
|
||||||
|
|
||||||
|
/* now configure for 4bit mode */
|
||||||
|
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN); // LCD_FUNCTION_4BIT_1LINE>>4
|
||||||
|
lcd_e_toggle();
|
||||||
|
delay(64); /* some displays need this additional delay */
|
||||||
|
|
||||||
|
/* from now the LCD only accepts 4 bit I/O, we can use lcd_command() */
|
||||||
|
#else
|
||||||
|
/*
|
||||||
|
* Initialize LCD to 8 bit memory mapped mode
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* enable external SRAM (memory mapped lcd) and one wait state */
|
||||||
|
MCUCR = _BV(SRE) | _BV(SRW);
|
||||||
|
|
||||||
|
/* reset LCD */
|
||||||
|
delay(16000); /* wait 16ms after power-on */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(4992); /* wait 5ms */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(64); /* wait 64us */
|
||||||
|
lcd_write(LCD_FUNCTION_8BIT_1LINE,0); /* function set: 8bit interface */
|
||||||
|
delay(64); /* wait 64us */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if KS0073_4LINES_MODE
|
||||||
|
/* Display with KS0073 controller requires special commands for enabling 4 line mode */
|
||||||
|
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_ON);
|
||||||
|
lcd_command(KS0073_4LINES_MODE);
|
||||||
|
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_OFF);
|
||||||
|
#else
|
||||||
|
lcd_command(LCD_FUNCTION_DEFAULT); /* function set: display lines */
|
||||||
|
#endif
|
||||||
|
lcd_command(LCD_DISP_OFF); /* display off */
|
||||||
|
lcd_clrscr(); /* display clear */
|
||||||
|
lcd_command(LCD_MODE_DEFAULT); /* set entry mode */
|
||||||
|
lcd_command(dispAttr); /* display/cursor control */
|
||||||
|
|
||||||
|
}/* lcd_init */
|
||||||
|
|
@ -0,0 +1,265 @@
|
||||||
|
#ifndef LCD_H
|
||||||
|
#define LCD_H
|
||||||
|
/*************************************************************************
|
||||||
|
Title : C include file for the HD44780U LCD library (lcd.c)
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: lcd.h,v 1.13.2.2 2006/01/30 19:51:33 peter Exp $
|
||||||
|
Software: AVR-GCC 3.3
|
||||||
|
Hardware: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
|
||||||
|
***************************************************************************/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@defgroup pfleury_lcd LCD library
|
||||||
|
@code #include <lcd.h> @endcode
|
||||||
|
|
||||||
|
@brief Basic routines for interfacing a HD44780U-based text LCD display
|
||||||
|
|
||||||
|
Originally based on Volker Oth's LCD library,
|
||||||
|
changed lcd_init(), added additional constants for lcd_command(),
|
||||||
|
added 4-bit I/O mode, improved and optimized code.
|
||||||
|
|
||||||
|
Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
|
||||||
|
4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
|
||||||
|
|
||||||
|
Memory mapped mode compatible with Kanda STK200, but supports also
|
||||||
|
generation of R/W signal through A8 address line.
|
||||||
|
|
||||||
|
@author Peter Fleury pfleury@gmx.ch http://jump.to/fleury
|
||||||
|
|
||||||
|
@see The chapter <a href="http://homepage.sunrise.ch/mysunrise/peterfleury/avr-lcd44780.html" target="_blank">Interfacing a HD44780 Based LCD to an AVR</a>
|
||||||
|
on my home page.
|
||||||
|
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*@{*/
|
||||||
|
|
||||||
|
#if (__GNUC__ * 100 + __GNUC_MINOR__) < 303
|
||||||
|
#error "This library requires AVR-GCC 3.3 or later, update to newer AVR-GCC compiler !"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <inttypes.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for MCU Clock Frequency
|
||||||
|
* Adapt the MCU clock frequency in Hz to your target.
|
||||||
|
*/
|
||||||
|
#define XTAL 4000000 /**< clock frequency in Hz, used to calculate delay timer */
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definition for LCD controller type
|
||||||
|
* Use 0 for HD44780 controller, change to 1 for displays with KS0073 controller.
|
||||||
|
*/
|
||||||
|
#define LCD_CONTROLLER_KS0073 0 /**< Use 0 for HD44780 controller, 1 for KS0073 controller */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for Display Size
|
||||||
|
* Change these definitions to adapt setting to your display
|
||||||
|
*/
|
||||||
|
#define LCD_LINES 2 /**< number of visible lines of the display */
|
||||||
|
#define LCD_DISP_LENGTH 16 /**< visibles characters per line of the display */
|
||||||
|
#define LCD_LINE_LENGTH 0x40 /**< internal line length of the display */
|
||||||
|
#define LCD_START_LINE1 0x00 /**< DDRAM address of first char of line 1 */
|
||||||
|
#define LCD_START_LINE2 0x40 /**< DDRAM address of first char of line 2 */
|
||||||
|
#define LCD_START_LINE3 0x14 /**< DDRAM address of first char of line 3 */
|
||||||
|
#define LCD_START_LINE4 0x54 /**< DDRAM address of first char of line 4 */
|
||||||
|
#define LCD_WRAP_LINES 0 /**< 0: no wrap, 1: wrap at end of visibile line */
|
||||||
|
|
||||||
|
|
||||||
|
#define LCD_IO_MODE 1 /**< 0: memory mapped mode, 1: IO port mode */
|
||||||
|
#if LCD_IO_MODE
|
||||||
|
/**
|
||||||
|
* @name Definitions for 4-bit IO mode
|
||||||
|
* Change LCD_PORT if you want to use a different port for the LCD pins.
|
||||||
|
*
|
||||||
|
* The four LCD data lines and the three control lines RS, RW, E can be on the
|
||||||
|
* same port or on different ports.
|
||||||
|
* Change LCD_RS_PORT, LCD_RW_PORT, LCD_E_PORT if you want the control lines on
|
||||||
|
* different ports.
|
||||||
|
*
|
||||||
|
* Normally the four data lines should be mapped to bit 0..3 on one port, but it
|
||||||
|
* is possible to connect these data lines in different order or even on different
|
||||||
|
* ports by adapting the LCD_DATAx_PORT and LCD_DATAx_PIN definitions.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
#define LCD_PORT PORTA /**< port for the LCD lines */
|
||||||
|
#define LCD_DATA0_PORT LCD_PORT /**< port for 4bit data bit 0 */
|
||||||
|
#define LCD_DATA1_PORT LCD_PORT /**< port for 4bit data bit 1 */
|
||||||
|
#define LCD_DATA2_PORT LCD_PORT /**< port for 4bit data bit 2 */
|
||||||
|
#define LCD_DATA3_PORT LCD_PORT /**< port for 4bit data bit 3 */
|
||||||
|
#define LCD_DATA0_PIN 0 /**< pin for 4bit data bit 0 */
|
||||||
|
#define LCD_DATA1_PIN 1 /**< pin for 4bit data bit 1 */
|
||||||
|
#define LCD_DATA2_PIN 2 /**< pin for 4bit data bit 2 */
|
||||||
|
#define LCD_DATA3_PIN 3 /**< pin for 4bit data bit 3 */
|
||||||
|
#define LCD_RS_PORT LCD_PORT /**< port for RS line */
|
||||||
|
#define LCD_RS_PIN 4 /**< pin for RS line */
|
||||||
|
#define LCD_RW_PORT LCD_PORT /**< port for RW line */
|
||||||
|
#define LCD_RW_PIN 5 /**< pin for RW line */
|
||||||
|
#define LCD_E_PORT LCD_PORT /**< port for Enable line */
|
||||||
|
#define LCD_E_PIN 6 /**< pin for Enable line */
|
||||||
|
|
||||||
|
#elif defined(__AVR_AT90S4414__) || defined(__AVR_AT90S8515__) || defined(__AVR_ATmega64__) || \
|
||||||
|
defined(__AVR_ATmega8515__)|| defined(__AVR_ATmega103__) || defined(__AVR_ATmega128__) || \
|
||||||
|
defined(__AVR_ATmega161__) || defined(__AVR_ATmega162__)
|
||||||
|
/*
|
||||||
|
* memory mapped mode is only supported when the device has an external data memory interface
|
||||||
|
*/
|
||||||
|
#define LCD_IO_DATA 0xC000 /* A15=E=1, A14=RS=1 */
|
||||||
|
#define LCD_IO_FUNCTION 0x8000 /* A15=E=1, A14=RS=0 */
|
||||||
|
#define LCD_IO_READ 0x0100 /* A8 =R/W=1 (R/W: 1=Read, 0=Write */
|
||||||
|
#else
|
||||||
|
#error "external data memory interface not available for this device, use 4-bit IO port mode"
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Definitions for LCD command instructions
|
||||||
|
* The constants define the various LCD controller instructions which can be passed to the
|
||||||
|
* function lcd_command(), see HD44780 data sheet for a complete description.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* instruction register bit positions, see HD44780U data sheet */
|
||||||
|
#define LCD_CLR 0 /* DB0: clear display */
|
||||||
|
#define LCD_HOME 1 /* DB1: return to home position */
|
||||||
|
#define LCD_ENTRY_MODE 2 /* DB2: set entry mode */
|
||||||
|
#define LCD_ENTRY_INC 1 /* DB1: 1=increment, 0=decrement */
|
||||||
|
#define LCD_ENTRY_SHIFT 0 /* DB2: 1=display shift on */
|
||||||
|
#define LCD_ON 3 /* DB3: turn lcd/cursor on */
|
||||||
|
#define LCD_ON_DISPLAY 2 /* DB2: turn display on */
|
||||||
|
#define LCD_ON_CURSOR 1 /* DB1: turn cursor on */
|
||||||
|
#define LCD_ON_BLINK 0 /* DB0: blinking cursor ? */
|
||||||
|
#define LCD_MOVE 4 /* DB4: move cursor/display */
|
||||||
|
#define LCD_MOVE_DISP 3 /* DB3: move display (0-> cursor) ? */
|
||||||
|
#define LCD_MOVE_RIGHT 2 /* DB2: move right (0-> left) ? */
|
||||||
|
#define LCD_FUNCTION 5 /* DB5: function set */
|
||||||
|
#define LCD_FUNCTION_8BIT 4 /* DB4: set 8BIT mode (0->4BIT mode) */
|
||||||
|
#define LCD_FUNCTION_2LINES 3 /* DB3: two lines (0->one line) */
|
||||||
|
#define LCD_FUNCTION_10DOTS 2 /* DB2: 5x10 font (0->5x7 font) */
|
||||||
|
#define LCD_CGRAM 6 /* DB6: set CG RAM address */
|
||||||
|
#define LCD_DDRAM 7 /* DB7: set DD RAM address */
|
||||||
|
#define LCD_BUSY 7 /* DB7: LCD is busy */
|
||||||
|
|
||||||
|
/* set entry mode: display shift on/off, dec/inc cursor move direction */
|
||||||
|
#define LCD_ENTRY_DEC 0x04 /* display shift off, dec cursor move dir */
|
||||||
|
#define LCD_ENTRY_DEC_SHIFT 0x05 /* display shift on, dec cursor move dir */
|
||||||
|
#define LCD_ENTRY_INC_ 0x06 /* display shift off, inc cursor move dir */
|
||||||
|
#define LCD_ENTRY_INC_SHIFT 0x07 /* display shift on, inc cursor move dir */
|
||||||
|
|
||||||
|
/* display on/off, cursor on/off, blinking char at cursor position */
|
||||||
|
#define LCD_DISP_OFF 0x08 /* display off */
|
||||||
|
#define LCD_DISP_ON 0x0C /* display on, cursor off */
|
||||||
|
#define LCD_DISP_ON_BLINK 0x0D /* display on, cursor off, blink char */
|
||||||
|
#define LCD_DISP_ON_CURSOR 0x0E /* display on, cursor on */
|
||||||
|
#define LCD_DISP_ON_CURSOR_BLINK 0x0F /* display on, cursor on, blink char */
|
||||||
|
|
||||||
|
/* move cursor/shift display */
|
||||||
|
#define LCD_MOVE_CURSOR_LEFT 0x10 /* move cursor left (decrement) */
|
||||||
|
#define LCD_MOVE_CURSOR_RIGHT 0x14 /* move cursor right (increment) */
|
||||||
|
#define LCD_MOVE_DISP_LEFT 0x18 /* shift display left */
|
||||||
|
#define LCD_MOVE_DISP_RIGHT 0x1C /* shift display right */
|
||||||
|
|
||||||
|
/* function set: set interface data length and number of display lines */
|
||||||
|
#define LCD_FUNCTION_4BIT_1LINE 0x20 /* 4-bit interface, single line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_4BIT_2LINES 0x28 /* 4-bit interface, dual line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_8BIT_1LINE 0x30 /* 8-bit interface, single line, 5x7 dots */
|
||||||
|
#define LCD_FUNCTION_8BIT_2LINES 0x38 /* 8-bit interface, dual line, 5x7 dots */
|
||||||
|
|
||||||
|
|
||||||
|
#define LCD_MODE_DEFAULT ((1<<LCD_ENTRY_MODE) | (1<<LCD_ENTRY_INC) )
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @name Functions
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Initialize display and select type of cursor
|
||||||
|
@param dispAttr \b LCD_DISP_OFF display off\n
|
||||||
|
\b LCD_DISP_ON display on, cursor off\n
|
||||||
|
\b LCD_DISP_ON_CURSOR display on, cursor on\n
|
||||||
|
\b LCD_DISP_ON_CURSOR_BLINK display on, cursor on flashing
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_init(uint8_t dispAttr);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Clear display and set cursor to home position
|
||||||
|
@param void
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_clrscr(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Set cursor to home position
|
||||||
|
@param void
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_home(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Set cursor to specified position
|
||||||
|
|
||||||
|
@param x horizontal position\n (0: left most position)
|
||||||
|
@param y vertical position\n (0: first line)
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_gotoxy(uint8_t x, uint8_t y);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display character at current cursor position
|
||||||
|
@param c character to be displayed
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_putc(char c);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display string without auto linefeed
|
||||||
|
@param s string to be displayed
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_puts(const char *s);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Display string from program memory without auto linefeed
|
||||||
|
@param s string from program memory be be displayed
|
||||||
|
@return none
|
||||||
|
@see lcd_puts_P
|
||||||
|
*/
|
||||||
|
extern void lcd_puts_p(const char *progmem_s);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Send LCD controller instruction command
|
||||||
|
@param cmd instruction to send to LCD controller, see HD44780 data sheet
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_command(uint8_t cmd);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Send data byte to LCD controller
|
||||||
|
|
||||||
|
Similar to lcd_putc(), but without interpreting LF
|
||||||
|
@param data byte to send to LCD controller, see HD44780 data sheet
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void lcd_data(uint8_t data);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief macros for automatically storing string constant in program memory
|
||||||
|
*/
|
||||||
|
#define lcd_puts_P(__s) lcd_puts_p(PSTR(__s))
|
||||||
|
|
||||||
|
/*@}*/
|
||||||
|
#endif //LCD_H
|
||||||
|
|
@ -0,0 +1,425 @@
|
||||||
|
# Hey Emacs, this is a -*- makefile -*-
|
||||||
|
#
|
||||||
|
# WinAVR Sample makefile written by Eric B. Weddington, Jörg Wunsch, et al.
|
||||||
|
# Released to the Public Domain
|
||||||
|
# Please read the make user manual!
|
||||||
|
#
|
||||||
|
# Additional material for this makefile was submitted by:
|
||||||
|
# Tim Henigan
|
||||||
|
# Peter Fleury
|
||||||
|
# Reiner Patommel
|
||||||
|
# Sander Pool
|
||||||
|
# Frederik Rouleau
|
||||||
|
# Markus Pfaff
|
||||||
|
#
|
||||||
|
# On command line:
|
||||||
|
#
|
||||||
|
# make all = Make software.
|
||||||
|
#
|
||||||
|
# make clean = Clean out built project files.
|
||||||
|
#
|
||||||
|
# make coff = Convert ELF to AVR COFF (for use with AVR Studio 3.x or VMLAB).
|
||||||
|
#
|
||||||
|
# make extcoff = Convert ELF to AVR Extended COFF (for use with AVR Studio
|
||||||
|
# 4.07 or greater).
|
||||||
|
#
|
||||||
|
# make program = Download the hex file to the device, using avrdude. Please
|
||||||
|
# customize the avrdude settings below first!
|
||||||
|
#
|
||||||
|
# make filename.s = Just compile filename.c into the assembler code only
|
||||||
|
#
|
||||||
|
# To rebuild project do "make clean" then "make all".
|
||||||
|
#
|
||||||
|
|
||||||
|
|
||||||
|
# MCU name
|
||||||
|
MCU = at90s8515
|
||||||
|
|
||||||
|
# Output format. (can be srec, ihex, binary)
|
||||||
|
FORMAT = ihex
|
||||||
|
|
||||||
|
# Target file name (without extension).
|
||||||
|
TARGET = test_lcd
|
||||||
|
|
||||||
|
|
||||||
|
# List C source files here. (C dependencies are automatically generated.)
|
||||||
|
SRC = $(TARGET).c lcd.c
|
||||||
|
|
||||||
|
|
||||||
|
# List Assembler source files here.
|
||||||
|
# Make them always end in a capital .S. Files ending in a lowercase .s
|
||||||
|
# will not be considered source files but generated files (assembler
|
||||||
|
# output from the compiler), and will be deleted upon "make clean"!
|
||||||
|
# Even though the DOS/Win* filesystem matches both .s and .S the same,
|
||||||
|
# it will preserve the spelling of the filenames, and gcc itself does
|
||||||
|
# care about how the name is spelled on its command-line.
|
||||||
|
ASRC =
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Optimization level, can be [0, 1, 2, 3, s].
|
||||||
|
# 0 = turn off optimization. s = optimize for size.
|
||||||
|
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
|
||||||
|
OPT = s
|
||||||
|
|
||||||
|
# Debugging format.
|
||||||
|
# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
|
||||||
|
# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
|
||||||
|
DEBUG = dwarf-2
|
||||||
|
|
||||||
|
# List any extra directories to look for include files here.
|
||||||
|
# Each directory must be seperated by a space.
|
||||||
|
EXTRAINCDIRS =
|
||||||
|
|
||||||
|
|
||||||
|
# Compiler flag to set the C Standard level.
|
||||||
|
# c89 - "ANSI" C
|
||||||
|
# gnu89 - c89 plus GCC extensions
|
||||||
|
# c99 - ISO C99 standard (not yet fully implemented)
|
||||||
|
# gnu99 - c99 plus GCC extensions
|
||||||
|
CSTANDARD = -std=gnu99
|
||||||
|
|
||||||
|
# Place -D or -U options here
|
||||||
|
CDEFS =
|
||||||
|
|
||||||
|
# Place -I options here
|
||||||
|
CINCS =
|
||||||
|
|
||||||
|
|
||||||
|
# Compiler flags.
|
||||||
|
# -g*: generate debugging information
|
||||||
|
# -O*: optimization level
|
||||||
|
# -f...: tuning, see GCC manual and avr-libc documentation
|
||||||
|
# -Wall...: warning level
|
||||||
|
# -Wa,...: tell GCC to pass this to the assembler.
|
||||||
|
# -adhlns...: create assembler listing
|
||||||
|
CFLAGS = -g$(DEBUG)
|
||||||
|
CFLAGS += $(CDEFS) $(CINCS)
|
||||||
|
CFLAGS += -O$(OPT)
|
||||||
|
CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
|
||||||
|
CFLAGS += -Wall -Wstrict-prototypes
|
||||||
|
CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
|
||||||
|
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
|
||||||
|
CFLAGS += $(CSTANDARD)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Assembler flags.
|
||||||
|
# -Wa,...: tell GCC to pass this to the assembler.
|
||||||
|
# -ahlms: create listing
|
||||||
|
# -gstabs: have the assembler create line number information; note that
|
||||||
|
# for use in COFF files, additional information about filenames
|
||||||
|
# and function names needs to be present in the assembler source
|
||||||
|
# files -- see avr-libc docs [FIXME: not yet described there]
|
||||||
|
ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#Additional libraries.
|
||||||
|
|
||||||
|
# Minimalistic printf version
|
||||||
|
PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
|
||||||
|
|
||||||
|
# Floating point printf version (requires MATH_LIB = -lm below)
|
||||||
|
PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
|
||||||
|
|
||||||
|
PRINTF_LIB =
|
||||||
|
|
||||||
|
# Minimalistic scanf version
|
||||||
|
SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
|
||||||
|
|
||||||
|
# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
|
||||||
|
SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
|
||||||
|
|
||||||
|
SCANF_LIB =
|
||||||
|
|
||||||
|
MATH_LIB = -lm
|
||||||
|
|
||||||
|
# External memory options
|
||||||
|
|
||||||
|
# 64 KB of external RAM, starting after internal RAM (ATmega128!),
|
||||||
|
# used for variables (.data/.bss) and heap (malloc()).
|
||||||
|
#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
|
||||||
|
|
||||||
|
# 64 KB of external RAM, starting after internal RAM (ATmega128!),
|
||||||
|
# only used for heap (malloc()).
|
||||||
|
#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff
|
||||||
|
|
||||||
|
EXTMEMOPTS =
|
||||||
|
|
||||||
|
# Linker flags.
|
||||||
|
# -Wl,...: tell GCC to pass this to linker.
|
||||||
|
# -Map: create map file
|
||||||
|
# --cref: add cross reference to map file
|
||||||
|
LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
|
||||||
|
LDFLAGS += $(EXTMEMOPTS)
|
||||||
|
LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Programming support using avrdude. Settings and variables.
|
||||||
|
|
||||||
|
# Programming hardware: alf avr910 avrisp bascom bsd
|
||||||
|
# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
|
||||||
|
#
|
||||||
|
# Type: avrdude -c ?
|
||||||
|
# to get a full listing.
|
||||||
|
#
|
||||||
|
AVRDUDE_PROGRAMMER = stk500
|
||||||
|
|
||||||
|
# com1 = serial port. Use lpt1 to connect to parallel port.
|
||||||
|
AVRDUDE_PORT = com1 # programmer connected to serial device
|
||||||
|
|
||||||
|
AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
|
||||||
|
#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
|
||||||
|
|
||||||
|
|
||||||
|
# Uncomment the following if you want avrdude's erase cycle counter.
|
||||||
|
# Note that this counter needs to be initialized first using -Yn,
|
||||||
|
# see avrdude manual.
|
||||||
|
#AVRDUDE_ERASE_COUNTER = -y
|
||||||
|
|
||||||
|
# Uncomment the following if you do /not/ wish a verification to be
|
||||||
|
# performed after programming the device.
|
||||||
|
#AVRDUDE_NO_VERIFY = -V
|
||||||
|
|
||||||
|
# Increase verbosity level. Please use this when submitting bug
|
||||||
|
# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
|
||||||
|
# to submit bug reports.
|
||||||
|
#AVRDUDE_VERBOSE = -v -v
|
||||||
|
|
||||||
|
AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
|
||||||
|
AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
|
||||||
|
AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
|
||||||
|
AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# ---------------------------------------------------------------------------
|
||||||
|
|
||||||
|
# Define directories, if needed.
|
||||||
|
DIRAVR = c:/winavr
|
||||||
|
DIRAVRBIN = $(DIRAVR)/bin
|
||||||
|
DIRAVRUTILS = $(DIRAVR)/utils/bin
|
||||||
|
DIRINC = .
|
||||||
|
DIRLIB = $(DIRAVR)/avr/lib
|
||||||
|
|
||||||
|
|
||||||
|
# Define programs and commands.
|
||||||
|
SHELL = sh
|
||||||
|
CC = avr-gcc
|
||||||
|
OBJCOPY = avr-objcopy
|
||||||
|
OBJDUMP = avr-objdump
|
||||||
|
SIZE = avr-size
|
||||||
|
NM = avr-nm
|
||||||
|
AVRDUDE = avrdude
|
||||||
|
REMOVE = rm -f
|
||||||
|
COPY = cp
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Define Messages
|
||||||
|
# English
|
||||||
|
MSG_ERRORS_NONE = Errors: none
|
||||||
|
MSG_BEGIN = -------- begin --------
|
||||||
|
MSG_END = -------- end --------
|
||||||
|
MSG_SIZE_BEFORE = Size before:
|
||||||
|
MSG_SIZE_AFTER = Size after:
|
||||||
|
MSG_COFF = Converting to AVR COFF:
|
||||||
|
MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
|
||||||
|
MSG_FLASH = Creating load file for Flash:
|
||||||
|
MSG_EEPROM = Creating load file for EEPROM:
|
||||||
|
MSG_EXTENDED_LISTING = Creating Extended Listing:
|
||||||
|
MSG_SYMBOL_TABLE = Creating Symbol Table:
|
||||||
|
MSG_LINKING = Linking:
|
||||||
|
MSG_COMPILING = Compiling:
|
||||||
|
MSG_ASSEMBLING = Assembling:
|
||||||
|
MSG_CLEANING = Cleaning project:
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Define all object files.
|
||||||
|
OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
|
||||||
|
|
||||||
|
# Define all listing files.
|
||||||
|
LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)
|
||||||
|
|
||||||
|
|
||||||
|
# Compiler flags to generate dependency files.
|
||||||
|
GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d
|
||||||
|
|
||||||
|
|
||||||
|
# Combine all necessary flags and optional flags.
|
||||||
|
# Add target processor to flags.
|
||||||
|
ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
|
||||||
|
ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Default target.
|
||||||
|
all: begin gccversion sizebefore build sizeafter finished end
|
||||||
|
|
||||||
|
build: elf hex eep lss sym
|
||||||
|
|
||||||
|
elf: $(TARGET).elf
|
||||||
|
hex: $(TARGET).hex
|
||||||
|
eep: $(TARGET).eep
|
||||||
|
lss: $(TARGET).lss
|
||||||
|
sym: $(TARGET).sym
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Eye candy.
|
||||||
|
# AVR Studio 3.x does not check make's exit code but relies on
|
||||||
|
# the following magic strings to be generated by the compile job.
|
||||||
|
begin:
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_BEGIN)
|
||||||
|
|
||||||
|
finished:
|
||||||
|
@echo $(MSG_ERRORS_NONE)
|
||||||
|
|
||||||
|
end:
|
||||||
|
@echo $(MSG_END)
|
||||||
|
@echo
|
||||||
|
|
||||||
|
|
||||||
|
# Display size of file.
|
||||||
|
HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
|
||||||
|
ELFSIZE = $(SIZE) -A $(TARGET).elf
|
||||||
|
sizebefore:
|
||||||
|
@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi
|
||||||
|
|
||||||
|
sizeafter:
|
||||||
|
@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Display compiler version information.
|
||||||
|
gccversion :
|
||||||
|
@$(CC) --version
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Program the device.
|
||||||
|
program: $(TARGET).hex $(TARGET).eep
|
||||||
|
$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
|
||||||
|
COFFCONVERT=$(OBJCOPY) --debugging \
|
||||||
|
--change-section-address .data-0x800000 \
|
||||||
|
--change-section-address .bss-0x800000 \
|
||||||
|
--change-section-address .noinit-0x800000 \
|
||||||
|
--change-section-address .eeprom-0x810000
|
||||||
|
|
||||||
|
|
||||||
|
coff: $(TARGET).elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_COFF) $(TARGET).cof
|
||||||
|
$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
|
||||||
|
|
||||||
|
|
||||||
|
extcoff: $(TARGET).elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
|
||||||
|
$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Create final output files (.hex, .eep) from ELF output file.
|
||||||
|
%.hex: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_FLASH) $@
|
||||||
|
$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
|
||||||
|
|
||||||
|
%.eep: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_EEPROM) $@
|
||||||
|
-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
|
||||||
|
--change-section-lma .eeprom=0 -O $(FORMAT) $< $@
|
||||||
|
|
||||||
|
# Create extended listing file from ELF output file.
|
||||||
|
%.lss: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_EXTENDED_LISTING) $@
|
||||||
|
$(OBJDUMP) -h -S $< > $@
|
||||||
|
|
||||||
|
# Create a symbol table from ELF output file.
|
||||||
|
%.sym: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_SYMBOL_TABLE) $@
|
||||||
|
$(NM) -n $< > $@
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Link: create ELF output file from object files.
|
||||||
|
.SECONDARY : $(TARGET).elf
|
||||||
|
.PRECIOUS : $(OBJ)
|
||||||
|
%.elf: $(OBJ)
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_LINKING) $@
|
||||||
|
$(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
|
||||||
|
|
||||||
|
|
||||||
|
# Compile: create object files from C source files.
|
||||||
|
%.o : %.c
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_COMPILING) $<
|
||||||
|
$(CC) -c $(ALL_CFLAGS) $< -o $@
|
||||||
|
|
||||||
|
|
||||||
|
# Compile: create assembler files from C source files.
|
||||||
|
%.s : %.c
|
||||||
|
$(CC) -S $(ALL_CFLAGS) $< -o $@
|
||||||
|
|
||||||
|
|
||||||
|
# Assemble: create object files from assembler source files.
|
||||||
|
%.o : %.S
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_ASSEMBLING) $<
|
||||||
|
$(CC) -c $(ALL_ASFLAGS) $< -o $@
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Target: clean project.
|
||||||
|
clean: begin clean_list finished end
|
||||||
|
|
||||||
|
clean_list :
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_CLEANING)
|
||||||
|
$(REMOVE) $(TARGET).hex
|
||||||
|
$(REMOVE) $(TARGET).eep
|
||||||
|
$(REMOVE) $(TARGET).obj
|
||||||
|
$(REMOVE) $(TARGET).cof
|
||||||
|
$(REMOVE) $(TARGET).elf
|
||||||
|
$(REMOVE) $(TARGET).map
|
||||||
|
$(REMOVE) $(TARGET).obj
|
||||||
|
$(REMOVE) $(TARGET).a90
|
||||||
|
$(REMOVE) $(TARGET).sym
|
||||||
|
$(REMOVE) $(TARGET).lnk
|
||||||
|
$(REMOVE) $(TARGET).lss
|
||||||
|
$(REMOVE) $(OBJ)
|
||||||
|
$(REMOVE) $(LST)
|
||||||
|
$(REMOVE) $(SRC:.c=.s)
|
||||||
|
$(REMOVE) $(SRC:.c=.d)
|
||||||
|
$(REMOVE) .dep/*
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Include the dependency files.
|
||||||
|
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
|
||||||
|
|
||||||
|
|
||||||
|
# Listing of phony targets.
|
||||||
|
.PHONY : all begin finish end sizebefore sizeafter gccversion \
|
||||||
|
build elf hex eep lss sym coff extcoff \
|
||||||
|
clean clean_list program
|
||||||
|
|
||||||
|
|
@ -0,0 +1,167 @@
|
||||||
|
/*************************************************************************
|
||||||
|
Title: testing output to a HD44780 based LCD display.
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: test_lcd.c,v 1.6 2004/12/10 13:53:59 peter Exp $
|
||||||
|
Software: AVR-GCC 3.3
|
||||||
|
Hardware: HD44780 compatible LCD text display
|
||||||
|
ATS90S8515/ATmega if memory-mapped LCD interface is used
|
||||||
|
any AVR with 7 free I/O pins if 4-bit IO port mode is used
|
||||||
|
**************************************************************************/
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
#include "lcd.h"
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** constant definitions
|
||||||
|
*/
|
||||||
|
static const PROGMEM unsigned char copyRightChar[] =
|
||||||
|
{
|
||||||
|
0x07, 0x08, 0x13, 0x14, 0x14, 0x13, 0x08, 0x07,
|
||||||
|
0x00, 0x10, 0x08, 0x08, 0x08, 0x08, 0x10, 0x00
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** function prototypes
|
||||||
|
*/
|
||||||
|
void wait_until_key_pressed(void);
|
||||||
|
|
||||||
|
|
||||||
|
void wait_until_key_pressed(void)
|
||||||
|
{
|
||||||
|
unsigned char temp1, temp2;
|
||||||
|
unsigned int i;
|
||||||
|
|
||||||
|
do {
|
||||||
|
temp1 = PIND; // read input
|
||||||
|
for(i=0;i<65535;i++);
|
||||||
|
temp2 = PIND; // read input
|
||||||
|
temp1 = (temp1 & temp2); // debounce input
|
||||||
|
} while ( temp1 & _BV(PIND2) );
|
||||||
|
|
||||||
|
loop_until_bit_is_set(PIND,PIND2); /* wait until key is released */
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
int main(void)
|
||||||
|
{
|
||||||
|
char buffer[7];
|
||||||
|
int num=134;
|
||||||
|
unsigned char i;
|
||||||
|
|
||||||
|
|
||||||
|
DDRD &=~ (1 << PD2); /* Pin PD2 input */
|
||||||
|
PORTD |= (1 << PD2); /* Pin PD2 pull-up enabled */
|
||||||
|
|
||||||
|
|
||||||
|
/* initialize display, cursor off */
|
||||||
|
lcd_init(LCD_DISP_ON);
|
||||||
|
|
||||||
|
for (;;) { /* loop forever */
|
||||||
|
/*
|
||||||
|
* Test 1: write text to display
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* clear display and home cursor */
|
||||||
|
lcd_clrscr();
|
||||||
|
|
||||||
|
/* put string to display (line 1) with linefeed */
|
||||||
|
lcd_puts("LCD Test Line 1\n");
|
||||||
|
|
||||||
|
/* cursor is now on second line, write second line */
|
||||||
|
lcd_puts("Line 2");
|
||||||
|
|
||||||
|
/* move cursor to position 8 on line 2 */
|
||||||
|
lcd_gotoxy(7,1);
|
||||||
|
|
||||||
|
/* write single char to display */
|
||||||
|
lcd_putc(':');
|
||||||
|
|
||||||
|
/* wait until push button PD2 (INT0) is pressed */
|
||||||
|
wait_until_key_pressed();
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Test 2: use lcd_command() to turn on cursor
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* turn on cursor */
|
||||||
|
lcd_command(LCD_DISP_ON_CURSOR);
|
||||||
|
|
||||||
|
/* put string */
|
||||||
|
lcd_puts( "CurOn");
|
||||||
|
|
||||||
|
/* wait until push button PD2 (INT0) is pressed */
|
||||||
|
wait_until_key_pressed();
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Test 3: display shift
|
||||||
|
*/
|
||||||
|
|
||||||
|
lcd_clrscr(); /* clear display home cursor */
|
||||||
|
|
||||||
|
/* put string from program memory to display */
|
||||||
|
lcd_puts_P( "Line 1 longer than 14 characters\n" );
|
||||||
|
lcd_puts_P( "Line 2 longer than 14 characters" );
|
||||||
|
|
||||||
|
/* move BOTH lines one position to the left */
|
||||||
|
lcd_command(LCD_MOVE_DISP_LEFT);
|
||||||
|
|
||||||
|
/* wait until push button PD2 (INT0) is pressed */
|
||||||
|
wait_until_key_pressed();
|
||||||
|
|
||||||
|
/* turn off cursor */
|
||||||
|
lcd_command(LCD_DISP_ON);
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Test: Display integer values
|
||||||
|
*/
|
||||||
|
|
||||||
|
lcd_clrscr(); /* clear display home cursor */
|
||||||
|
|
||||||
|
/* convert interger into string */
|
||||||
|
itoa( num , buffer, 10);
|
||||||
|
|
||||||
|
/* put converted string to display */
|
||||||
|
lcd_puts(buffer);
|
||||||
|
|
||||||
|
/* wait until push button PD2 (INT0) is pressed */
|
||||||
|
wait_until_key_pressed();
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Test: Display userdefined characters
|
||||||
|
*/
|
||||||
|
|
||||||
|
lcd_clrscr(); /* clear display home cursor */
|
||||||
|
|
||||||
|
lcd_puts("Copyright: ");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* load two userdefined characters from program memory
|
||||||
|
* into LCD controller CG RAM location 0 and 1
|
||||||
|
*/
|
||||||
|
lcd_command(_BV(LCD_CGRAM)); /* set CG RAM start address 0 */
|
||||||
|
for(i=0; i<16; i++)
|
||||||
|
{
|
||||||
|
lcd_data(pgm_read_byte_near(©RightChar[i]));
|
||||||
|
}
|
||||||
|
|
||||||
|
/* move cursor to position 0 on line 2 */
|
||||||
|
/* Note: this switched back to DD RAM adresses */
|
||||||
|
lcd_gotoxy(0,1);
|
||||||
|
|
||||||
|
/* display user defined (c), built using two user defined chars */
|
||||||
|
lcd_putc(0);
|
||||||
|
lcd_putc(1);
|
||||||
|
|
||||||
|
|
||||||
|
/* wait until push button PD2 (INT0) is pressed */
|
||||||
|
wait_until_key_pressed();
|
||||||
|
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,89 @@
|
||||||
|
#include "ringbuffer.h"
|
||||||
|
|
||||||
|
uint16_t _rb_mod(uint16_t num, uint16_t denom)
|
||||||
|
{
|
||||||
|
for (; num >= denom; num -= denom);
|
||||||
|
return num;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ringbuffer_init(ringbuffer *buf, int bufsize)
|
||||||
|
{
|
||||||
|
buf->read_pointer = 0;
|
||||||
|
buf->write_pointer = 0;
|
||||||
|
buf->size = bufsize - sizeof(ringbuffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_canread(ringbuffer *buf)
|
||||||
|
{
|
||||||
|
return _rb_mod(buf->write_pointer + buf->size + buf->size - buf->read_pointer, buf->size);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_canwrite(ringbuffer *buf)
|
||||||
|
{
|
||||||
|
return _rb_mod(buf->read_pointer + buf->size + buf->size - buf->write_pointer - 1, buf->size);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t ringbuffer_readchar(ringbuffer *buf)
|
||||||
|
{
|
||||||
|
uint8_t r = 0;
|
||||||
|
if (ringbuffer_canread(buf))
|
||||||
|
{
|
||||||
|
r = buf->data[buf->read_pointer];
|
||||||
|
buf->read_pointer = _rb_mod(buf->read_pointer + 1, buf->size);
|
||||||
|
}
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ringbuffer_writechar(ringbuffer *buf, uint8_t data)
|
||||||
|
{
|
||||||
|
if (ringbuffer_canwrite(buf))
|
||||||
|
{
|
||||||
|
buf->data[buf->write_pointer] = data;
|
||||||
|
buf->write_pointer = _rb_mod(buf->write_pointer + 1, buf->size);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
uint8_t ringbuffer_peekchar(ringbuffer *buf, uint16_t index)
|
||||||
|
{
|
||||||
|
return buf->data[_rb_mod(buf->read_pointer + index, buf->size)];
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_readblock(ringbuffer *buf, uint8_t *newbuf, int size)
|
||||||
|
{
|
||||||
|
uint16_t nc, i;
|
||||||
|
uint8_t *rp, *ms;
|
||||||
|
if ((nc = ringbuffer_canread(buf)) < size)
|
||||||
|
size = nc;
|
||||||
|
if (size)
|
||||||
|
{
|
||||||
|
for (i = 0, rp = buf->data + buf->read_pointer, ms = buf->data + buf->size; i < size; i++, rp++)
|
||||||
|
{
|
||||||
|
if (rp >= ms)
|
||||||
|
rp = buf->data;
|
||||||
|
newbuf[i] = *rp;
|
||||||
|
}
|
||||||
|
buf->read_pointer = rp - buf->data;
|
||||||
|
}
|
||||||
|
return size;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t ringbuffer_writeblock(ringbuffer *buf, uint8_t *data, int size)
|
||||||
|
{
|
||||||
|
uint16_t nc, i;
|
||||||
|
uint8_t *wp, *ms;
|
||||||
|
|
||||||
|
if ((nc = ringbuffer_canwrite(buf)) < size)
|
||||||
|
size = nc;
|
||||||
|
if (size)
|
||||||
|
{
|
||||||
|
for (i = 0, wp = buf->write_pointer + buf->data, ms = buf->data + buf->size; i < size; i++, wp++)
|
||||||
|
{
|
||||||
|
if (wp >= ms)
|
||||||
|
wp = buf->data;
|
||||||
|
*wp = data[i];
|
||||||
|
}
|
||||||
|
buf->write_pointer = wp - buf->data;
|
||||||
|
}
|
||||||
|
return size;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,26 @@
|
||||||
|
#ifndef _RINGBUFFER_H
|
||||||
|
#define _RINGBUFFER_H
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <avr/interrupt.h>
|
||||||
|
|
||||||
|
typedef struct {
|
||||||
|
uint16_t read_pointer;
|
||||||
|
uint16_t write_pointer;
|
||||||
|
uint16_t size;
|
||||||
|
uint8_t data[];
|
||||||
|
} ringbuffer;
|
||||||
|
|
||||||
|
void ringbuffer_init(ringbuffer *buf, int bufsize);
|
||||||
|
|
||||||
|
uint16_t ringbuffer_canread(ringbuffer *buf);
|
||||||
|
uint16_t ringbuffer_canwrite(ringbuffer *buf);
|
||||||
|
|
||||||
|
uint8_t ringbuffer_readchar(ringbuffer *buf);
|
||||||
|
uint8_t ringbuffer_peekchar(ringbuffer *buf, uint16_t index);
|
||||||
|
uint16_t ringbuffer_readblock(ringbuffer *buf, uint8_t *newbuf, int size);
|
||||||
|
|
||||||
|
void ringbuffer_writechar(ringbuffer *buf, uint8_t data);
|
||||||
|
uint16_t ringbuffer_writeblock(ringbuffer *buf, uint8_t *data, int size);
|
||||||
|
|
||||||
|
#endif /* _RINGBUFFER_H */
|
||||||
|
|
@ -0,0 +1,72 @@
|
||||||
|
#include "serial.h"
|
||||||
|
|
||||||
|
#include "ringbuffer.h"
|
||||||
|
|
||||||
|
#define BUFSIZE 64 + sizeof(ringbuffer)
|
||||||
|
#define BAUD 19200
|
||||||
|
|
||||||
|
volatile uint8_t _rx_buffer[BUFSIZE];
|
||||||
|
volatile uint8_t _tx_buffer[BUFSIZE];
|
||||||
|
|
||||||
|
void serial_init(uint16_t baud)
|
||||||
|
{
|
||||||
|
ringbuffer_init(rx_buffer, BUFSIZE);
|
||||||
|
ringbuffer_init(tx_buffer, BUFSIZE);
|
||||||
|
|
||||||
|
UCSR0A = 0;
|
||||||
|
UCSR0B = (1 << RXEN0) | (1 << TXEN0);
|
||||||
|
UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
|
||||||
|
|
||||||
|
UBRR0 = ((F_CPU / 16) / baud) - 1;
|
||||||
|
|
||||||
|
UCSR0B |= (1 << RXCIE0) | (1 << UDRIE0);
|
||||||
|
}
|
||||||
|
|
||||||
|
ISR(USART_RX_vect)
|
||||||
|
{
|
||||||
|
ringbuffer_writechar(rx_buffer, UDR0);
|
||||||
|
}
|
||||||
|
|
||||||
|
ISR(USART_UDRE_vect)
|
||||||
|
{
|
||||||
|
if (ringbuffer_canread(tx_buffer))
|
||||||
|
{
|
||||||
|
UDR0 = ringbuffer_readchar(tx_buffer);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
UCSR0B &= ~(1 << UDRIE0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t serial_rxchars()
|
||||||
|
{
|
||||||
|
return ringbuffer_canread(rx_buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t serial_txchars()
|
||||||
|
{
|
||||||
|
return ringbuffer_canread(tx_buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t serial_popchar()
|
||||||
|
{
|
||||||
|
return ringbuffer_readchar(rx_buffer);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t serial_recvblock(uint8_t *block, int blocksize)
|
||||||
|
{
|
||||||
|
return ringbuffer_readblock(rx_buffer, block, blocksize);
|
||||||
|
}
|
||||||
|
|
||||||
|
void serial_writechar(uint8_t data)
|
||||||
|
{
|
||||||
|
ringbuffer_writechar(tx_buffer, data);
|
||||||
|
UCSR0B |= (1 << UDRIE0);
|
||||||
|
}
|
||||||
|
|
||||||
|
void serial_writeblock(uint8_t *data, int datalen)
|
||||||
|
{
|
||||||
|
ringbuffer_writeblock(tx_buffer, data, datalen);
|
||||||
|
UCSR0B |= (1 << UDRIE0);
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,24 @@
|
||||||
|
#ifndef _SERIAL_H
|
||||||
|
#define _SERIAL_H
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <avr/io.h>
|
||||||
|
|
||||||
|
#define rx_buffer ((ringbuffer *) _rx_buffer)
|
||||||
|
#define tx_buffer ((ringbuffer *) _tx_buffer)
|
||||||
|
|
||||||
|
extern volatile uint8_t _rx_buffer[];
|
||||||
|
extern volatile uint8_t _tx_buffer[];
|
||||||
|
|
||||||
|
void serial_init(uint16_t baud);
|
||||||
|
|
||||||
|
uint16_t serial_rxchars(void);
|
||||||
|
uint16_t serial_txchars(void);
|
||||||
|
|
||||||
|
uint8_t serial_popchar(void);
|
||||||
|
void serial_writechar(uint8_t data);
|
||||||
|
|
||||||
|
uint16_t serial_recvblock(uint8_t *block, int blocksize);
|
||||||
|
void serial_writeblock(uint8_t *data, int datalen);
|
||||||
|
|
||||||
|
#endif /* _SERIAL_H */
|
||||||
Binary file not shown.
|
|
@ -0,0 +1,49 @@
|
||||||
|
H1 { text-align: center; }
|
||||||
|
CAPTION { font-weight: bold }
|
||||||
|
A.qindex {}
|
||||||
|
A.qindexRef {}
|
||||||
|
A.el { text-decoration: none; font-weight: bold }
|
||||||
|
A.elRef { font-weight: bold }
|
||||||
|
A.code { text-decoration: none; font-weight: normal; color: #4444ee }
|
||||||
|
A.codeRef { font-weight: normal; color: #4444ee }
|
||||||
|
A:hover { text-decoration: none; background-color: #f2f2ff }
|
||||||
|
DL.el { margin-left: -1cm }
|
||||||
|
DIV.fragment { width: 100%; border: none; background-color: #eeeeee }
|
||||||
|
DIV.ah { background-color: black; font-weight: bold; color: #ffffff; margin-bottom: 3px; margin-top: 3px }
|
||||||
|
TD.md { background-color: #f2f2ff; font-weight: bold; }
|
||||||
|
TD.mdname1 { background-color: #f2f2ff; font-weight: bold; color: #602020; }
|
||||||
|
TD.mdname { background-color: #f2f2ff; font-weight: bold; color: #602020; width: 600px; }
|
||||||
|
DIV.groupHeader { margin-left: 16px; margin-top: 12px; margin-bottom: 6px; font-weight: bold }
|
||||||
|
DIV.groupText { margin-left: 16px; font-style: italic; font-size: smaller }
|
||||||
|
BODY { background: white; color: black }
|
||||||
|
TD.indexkey {
|
||||||
|
background-color: #eeeeff;
|
||||||
|
font-weight: bold;
|
||||||
|
padding-right : 10px;
|
||||||
|
padding-top : 2px;
|
||||||
|
padding-left : 10px;
|
||||||
|
padding-bottom : 2px;
|
||||||
|
margin-left : 0px;
|
||||||
|
margin-right : 0px;
|
||||||
|
margin-top : 2px;
|
||||||
|
margin-bottom : 2px
|
||||||
|
}
|
||||||
|
TD.indexvalue {
|
||||||
|
background-color: #eeeeff;
|
||||||
|
font-style: italic;
|
||||||
|
padding-right : 10px;
|
||||||
|
padding-top : 2px;
|
||||||
|
padding-left : 10px;
|
||||||
|
padding-bottom : 2px;
|
||||||
|
margin-left : 0px;
|
||||||
|
margin-right : 0px;
|
||||||
|
margin-top : 2px;
|
||||||
|
margin-bottom : 2px
|
||||||
|
}
|
||||||
|
span.keyword { color: #008000 }
|
||||||
|
span.keywordtype { color: #604020 }
|
||||||
|
span.keywordflow { color: #e08000 }
|
||||||
|
span.comment { color: #800000 }
|
||||||
|
span.preprocessor { color: #806020 }
|
||||||
|
span.stringliteral { color: #002080 }
|
||||||
|
span.charliteral { color: #008080 }
|
||||||
Binary file not shown.
|
After Width: | Height: | Size: 1.3 KiB |
|
|
@ -0,0 +1,560 @@
|
||||||
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||||||
|
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
|
||||||
|
<title>AVR-GCC libraries: UART Library</title>
|
||||||
|
<link href="doxygen.css" rel="stylesheet" type="text/css">
|
||||||
|
</head><body>
|
||||||
|
<!-- Generated by Doxygen 1.4.1 -->
|
||||||
|
<h1>UART Library</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
|
||||||
|
Interrupt UART library using the built-in UART with transmit and receive circular buffers.
|
||||||
|
<p>
|
||||||
|
<div class="fragment"><pre class="fragment"><span class="preprocessor"> #include <uart.h></span>
|
||||||
|
</pre></div><p>
|
||||||
|
This library can be used to transmit and receive data through the built in UART.<p>
|
||||||
|
An interrupt is generated when the UART has finished transmitting or receiving a byte. The interrupt handling routines use circular buffers for buffering received and transmitted data.<p>
|
||||||
|
The UART_RX_BUFFER_SIZE and UART_TX_BUFFER_SIZE constants define the size of the circular buffers in bytes. Note that these constants must be a power of 2. You may need to adapt this constants to your target and your application by adding CDEFS += -DUART_RX_BUFFER_SIZE=nn -DUART_RX_BUFFER_SIZE=nn to your Makefile.<p>
|
||||||
|
<dl compact><dt><b>Note:</b></dt><dd>Based on Atmel Application Note AVR306 </dd></dl>
|
||||||
|
<dl compact><dt><b>Author:</b></dt><dd>Peter Fleury <a href="mailto:pfleury@gmx.ch">pfleury@gmx.ch</a> <a href="http://jump.to/fleury">http://jump.to/fleury</a> </dd></dl>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
<table border="0" cellpadding="0" cellspacing="0">
|
||||||
|
<tr><td></td></tr>
|
||||||
|
<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga10">UART_BAUD_SELECT</a>(baudRate, xtalCpu) ((xtalCpu)/((baudRate)*16l)-1)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">UART Baudrate Expression. <a href="#ga10"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga11">UART_BAUD_SELECT_DOUBLE_SPEED</a>(baudRate, xtalCpu) (((xtalCpu)/((baudRate)*8l)-1)|0x8000)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">UART Baudrate Expression for ATmega double speed mode. <a href="#ga11"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga12">UART_RX_BUFFER_SIZE</a> 32</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga13">UART_TX_BUFFER_SIZE</a> 32</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ga14" doxytag="pfleury_uart::UART_FRAME_ERROR"></a>
|
||||||
|
#define </td><td class="memItemRight" valign="bottom"><b>UART_FRAME_ERROR</b> 0x0800</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ga15" doxytag="pfleury_uart::UART_OVERRUN_ERROR"></a>
|
||||||
|
#define </td><td class="memItemRight" valign="bottom"><b>UART_OVERRUN_ERROR</b> 0x0400</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ga16" doxytag="pfleury_uart::UART_BUFFER_OVERFLOW"></a>
|
||||||
|
#define </td><td class="memItemRight" valign="bottom"><b>UART_BUFFER_OVERFLOW</b> 0x0200</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ga17" doxytag="pfleury_uart::UART_NO_DATA"></a>
|
||||||
|
#define </td><td class="memItemRight" valign="bottom"><b>UART_NO_DATA</b> 0x0100</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ga18" doxytag="pfleury_uart::uart_puts_P"></a>
|
||||||
|
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga18">uart_puts_P</a>(__s) uart_puts_p(PSTR(__s))</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Macro to automatically put a string constant into program memory. <br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ga19" doxytag="pfleury_uart::uart1_puts_P"></a>
|
||||||
|
#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga19">uart1_puts_P</a>(__s) uart1_puts_p(PSTR(__s))</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Macro to automatically put a string constant into program memory. <br></td></tr>
|
||||||
|
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga0">uart_init</a> (unsigned int baudrate)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Initialize UART and set baudrate. <a href="#ga0"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga1">uart_getc</a> (void)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get received byte from ringbuffer. <a href="#ga1"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga2">uart_putc</a> (unsigned char data)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Put byte to ringbuffer for transmitting via UART. <a href="#ga2"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga3">uart_puts</a> (const char *s)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Put string to ringbuffer for transmitting via UART. <a href="#ga3"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga4">uart_puts_p</a> (const char *s)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Put string from program memory to ringbuffer for transmitting via UART. <a href="#ga4"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga5">uart1_init</a> (unsigned int baudrate)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Initialize USART1 (only available on selected ATmegas). <a href="#ga5"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga6">uart1_getc</a> (void)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get received byte of USART1 from ringbuffer. (only available on selected ATmega). <a href="#ga6"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga7">uart1_putc</a> (unsigned char data)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Put byte to ringbuffer for transmitting via USART1 (only available on selected ATmega). <a href="#ga7"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga8">uart1_puts</a> (const char *s)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Put string to ringbuffer for transmitting via USART1 (only available on selected ATmega). <a href="#ga8"></a><br></td></tr>
|
||||||
|
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__pfleury__uart.html#ga9">uart1_puts_p</a> (const char *s)</td></tr>
|
||||||
|
|
||||||
|
<tr><td class="mdescLeft"> </td><td class="mdescRight">Put string from program memory to ringbuffer for transmitting via USART1 (only available on selected ATmega). <a href="#ga9"></a><br></td></tr>
|
||||||
|
</table>
|
||||||
|
<hr><h2>Define Documentation</h2>
|
||||||
|
<a class="anchor" name="ga10" doxytag="uart.h::UART_BAUD_SELECT"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">#define UART_BAUD_SELECT </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">baudRate, <tr>
|
||||||
|
<td class="md" nowrap align="right"></td>
|
||||||
|
<td class="md"></td>
|
||||||
|
<td class="md" nowrap>xtalCpu </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap> ((xtalCpu)/((baudRate)*16l)-1)</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
UART Baudrate Expression.
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||||||
|
<table border="0" cellspacing="2" cellpadding="0">
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>xtalcpu</em> </td><td>system clock in Mhz, e.g. 4000000L for 4Mhz </td></tr>
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>baudrate</em> </td><td>baudrate in bps, e.g. 1200, 2400, 9600 </td></tr>
|
||||||
|
</table>
|
||||||
|
</dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga11" doxytag="uart.h::UART_BAUD_SELECT_DOUBLE_SPEED"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">#define UART_BAUD_SELECT_DOUBLE_SPEED </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">baudRate, <tr>
|
||||||
|
<td class="md" nowrap align="right"></td>
|
||||||
|
<td class="md"></td>
|
||||||
|
<td class="md" nowrap>xtalCpu </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap> (((xtalCpu)/((baudRate)*8l)-1)|0x8000)</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
UART Baudrate Expression for ATmega double speed mode.
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||||||
|
<table border="0" cellspacing="2" cellpadding="0">
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>xtalcpu</em> </td><td>system clock in Mhz, e.g. 4000000L for 4Mhz </td></tr>
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>baudrate</em> </td><td>baudrate in bps, e.g. 1200, 2400, 9600 </td></tr>
|
||||||
|
</table>
|
||||||
|
</dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga12" doxytag="uart.h::UART_RX_BUFFER_SIZE"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">#define UART_RX_BUFFER_SIZE 32 </td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Size of the circular receive buffer, must be power of 2 </td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga13" doxytag="uart.h::UART_TX_BUFFER_SIZE"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">#define UART_TX_BUFFER_SIZE 32 </td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Size of the circular transmit buffer, must be power of 2 </td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<hr><h2>Function Documentation</h2>
|
||||||
|
<a class="anchor" name="ga0" doxytag="uart.h::uart_init"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart_init </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">unsigned int </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>baudrate</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Initialize UART and set baudrate.
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||||||
|
<table border="0" cellspacing="2" cellpadding="0">
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>baudrate</em> </td><td>Specify baudrate using macro <a class="el" href="group__pfleury__uart.html#ga10">UART_BAUD_SELECT()</a> </td></tr>
|
||||||
|
</table>
|
||||||
|
</dl>
|
||||||
|
<dl compact><dt><b>Returns:</b></dt><dd>none </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga1" doxytag="uart.h::uart_getc"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">unsigned int uart_getc </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">void </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Get received byte from ringbuffer.
|
||||||
|
<p>
|
||||||
|
Returns in the lower byte the received character and in the higher byte the last receive error. UART_NO_DATA is returned when no data is available.<p>
|
||||||
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||||||
|
<table border="0" cellspacing="2" cellpadding="0">
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>void</em> </td><td></td></tr>
|
||||||
|
</table>
|
||||||
|
</dl>
|
||||||
|
<dl compact><dt><b>Returns:</b></dt><dd>lower byte: received byte from ringbuffer <p>
|
||||||
|
higher byte: last receive status<ul>
|
||||||
|
<li><b>0</b> successfully received data from UART</li><li><b>UART_NO_DATA</b> <br>
|
||||||
|
no receive data available</li><li><b>UART_BUFFER_OVERFLOW</b> <br>
|
||||||
|
Receive ringbuffer overflow. We are not reading the receive buffer fast enough, one or more received character have been dropped</li><li><b>UART_OVERRUN_ERROR</b> <br>
|
||||||
|
Overrun condition by UART. A character already present in the UART UDR register was not read by the interrupt handler before the next character arrived, one or more received characters have been dropped.</li><li><b>UART_FRAME_ERROR</b> <br>
|
||||||
|
Framing Error by UART </li></ul>
|
||||||
|
</dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga2" doxytag="uart.h::uart_putc"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart_putc </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">unsigned char </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>data</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Put byte to ringbuffer for transmitting via UART.
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||||||
|
<table border="0" cellspacing="2" cellpadding="0">
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>data</em> </td><td>byte to be transmitted </td></tr>
|
||||||
|
</table>
|
||||||
|
</dl>
|
||||||
|
<dl compact><dt><b>Returns:</b></dt><dd>none </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga3" doxytag="uart.h::uart_puts"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart_puts </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">const char * </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>s</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Put string to ringbuffer for transmitting via UART.
|
||||||
|
<p>
|
||||||
|
The string is buffered by the uart library in a circular buffer and one character at a time is transmitted to the UART using interrupts. Blocks if it can not write the whole string into the circular buffer.<p>
|
||||||
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||||||
|
<table border="0" cellspacing="2" cellpadding="0">
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>s</em> </td><td>string to be transmitted </td></tr>
|
||||||
|
</table>
|
||||||
|
</dl>
|
||||||
|
<dl compact><dt><b>Returns:</b></dt><dd>none </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga4" doxytag="uart.h::uart_puts_p"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart_puts_p </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">const char * </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>s</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Put string from program memory to ringbuffer for transmitting via UART.
|
||||||
|
<p>
|
||||||
|
The string is buffered by the uart library in a circular buffer and one character at a time is transmitted to the UART using interrupts. Blocks if it can not write the whole string into the circular buffer.<p>
|
||||||
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||||||
|
<table border="0" cellspacing="2" cellpadding="0">
|
||||||
|
<tr><td valign="top"></td><td valign="top"><em>s</em> </td><td>program memory string to be transmitted </td></tr>
|
||||||
|
</table>
|
||||||
|
</dl>
|
||||||
|
<dl compact><dt><b>Returns:</b></dt><dd>none </dd></dl>
|
||||||
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__pfleury__uart.html#ga18">uart_puts_P</a> </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga5" doxytag="uart.h::uart1_init"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart1_init </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">unsigned int </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>baudrate</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Initialize USART1 (only available on selected ATmegas).
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__pfleury__uart.html#ga0">uart_init</a> </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga6" doxytag="uart.h::uart1_getc"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">unsigned int uart1_getc </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">void </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Get received byte of USART1 from ringbuffer. (only available on selected ATmega).
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__pfleury__uart.html#ga1">uart_getc</a> </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga7" doxytag="uart.h::uart1_putc"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart1_putc </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">unsigned char </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>data</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Put byte to ringbuffer for transmitting via USART1 (only available on selected ATmega).
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__pfleury__uart.html#ga2">uart_putc</a> </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga8" doxytag="uart.h::uart1_puts"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart1_puts </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">const char * </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>s</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Put string to ringbuffer for transmitting via USART1 (only available on selected ATmega).
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__pfleury__uart.html#ga3">uart_puts</a> </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<a class="anchor" name="ga9" doxytag="uart.h::uart1_puts_p"></a><p>
|
||||||
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||||||
|
<tr>
|
||||||
|
<td class="mdRow">
|
||||||
|
<table cellpadding="0" cellspacing="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td class="md" nowrap valign="top">void uart1_puts_p </td>
|
||||||
|
<td class="md" valign="top">( </td>
|
||||||
|
<td class="md" nowrap valign="top">const char * </td>
|
||||||
|
<td class="mdname1" valign="top" nowrap> <em>s</em> </td>
|
||||||
|
<td class="md" valign="top"> ) </td>
|
||||||
|
<td class="md" nowrap></td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<table cellspacing="5" cellpadding="0" border="0">
|
||||||
|
<tr>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
</td>
|
||||||
|
<td>
|
||||||
|
|
||||||
|
<p>
|
||||||
|
Put string from program memory to ringbuffer for transmitting via USART1 (only available on selected ATmega).
|
||||||
|
<p>
|
||||||
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="group__pfleury__uart.html#ga4">uart_puts_p</a> </dd></dl>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</table>
|
||||||
|
<hr size="1"><address style="align: right;"><small>Generated on Sun Jul 10 13:47:45 2005 for AVR-GCC libraries by
|
||||||
|
<a href="http://www.doxygen.org/index.html">
|
||||||
|
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.1 </small></address>
|
||||||
|
</body>
|
||||||
|
</html>
|
||||||
|
|
@ -0,0 +1,508 @@
|
||||||
|
# ----------------------------------------------------------------------------
|
||||||
|
# Makefile to compile and link the UART library and test program
|
||||||
|
# Author: Peter Fleury
|
||||||
|
# File: $Id: makefile.uart,v 1.3 2005/04/09 07:56:09 Peter Exp $
|
||||||
|
# based on WinAVR Makefile Template written by Eric B. Weddington, Jörg Wunsch, et al.
|
||||||
|
#
|
||||||
|
# Adjust F_CPU below to the clock frequency in Mhz of your AVR target
|
||||||
|
#
|
||||||
|
# Adjust the size of the receive and transmit ringbuffer in bytes using the
|
||||||
|
# defines -DUART_RX_BUFFER_SIZE=128 and -DUART_TX_BUFFER_SIZE=128 in the
|
||||||
|
# CDEF section below
|
||||||
|
#
|
||||||
|
#----------------------------------------------------------------------------
|
||||||
|
# On command line:
|
||||||
|
#
|
||||||
|
# make all = Make software.
|
||||||
|
#
|
||||||
|
# make clean = Clean out built project files.
|
||||||
|
#
|
||||||
|
# make coff = Convert ELF to AVR COFF.
|
||||||
|
#
|
||||||
|
# make extcoff = Convert ELF to AVR Extended COFF.
|
||||||
|
#
|
||||||
|
# make program = Download the hex file to the device, using avrdude.
|
||||||
|
# Please customize the avrdude settings below first!
|
||||||
|
#
|
||||||
|
# make debug = Start either simulavr or avarice as specified for debugging,
|
||||||
|
# with avr-gdb or avr-insight as the front end for debugging.
|
||||||
|
#
|
||||||
|
# make filename.s = Just compile filename.c into the assembler code only.
|
||||||
|
#
|
||||||
|
# make filename.i = Create a preprocessed source file for use in submitting
|
||||||
|
# bug reports to the GCC project.
|
||||||
|
#
|
||||||
|
# To rebuild project do "make clean" then "make all".
|
||||||
|
#----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
# MCU name
|
||||||
|
MCU = at90s8515
|
||||||
|
|
||||||
|
|
||||||
|
# Processor frequency.
|
||||||
|
# This will define a symbol, F_CPU, in all source code files equal to the
|
||||||
|
# processor frequency. You can then use this symbol in your source code to
|
||||||
|
# calculate timings. Do NOT tack on a 'UL' at the end, this will be done
|
||||||
|
# automatically to create a 32-bit value in your source code.
|
||||||
|
F_CPU = 4000000
|
||||||
|
|
||||||
|
|
||||||
|
# Output format. (can be srec, ihex, binary)
|
||||||
|
FORMAT = ihex
|
||||||
|
|
||||||
|
|
||||||
|
# Target file name (without extension).
|
||||||
|
TARGET = test_uart
|
||||||
|
|
||||||
|
|
||||||
|
# List C source files here. (C dependencies are automatically generated.)
|
||||||
|
SRC = $(TARGET).c uart.c
|
||||||
|
|
||||||
|
|
||||||
|
# List Assembler source files here.
|
||||||
|
# Make them always end in a capital .S. Files ending in a lowercase .s
|
||||||
|
# will not be considered source files but generated files (assembler
|
||||||
|
# output from the compiler), and will be deleted upon "make clean"!
|
||||||
|
# Even though the DOS/Win* filesystem matches both .s and .S the same,
|
||||||
|
# it will preserve the spelling of the filenames, and gcc itself does
|
||||||
|
# care about how the name is spelled on its command-line.
|
||||||
|
ASRC =
|
||||||
|
|
||||||
|
|
||||||
|
# Optimization level, can be [0, 1, 2, 3, s].
|
||||||
|
# 0 = turn off optimization. s = optimize for size.
|
||||||
|
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
|
||||||
|
OPT = s
|
||||||
|
|
||||||
|
|
||||||
|
# Debugging format.
|
||||||
|
# Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs.
|
||||||
|
# AVR Studio 4.10 requires dwarf-2.
|
||||||
|
# AVR [Extended] COFF format requires stabs, plus an avr-objcopy run.
|
||||||
|
DEBUG = dwarf-2
|
||||||
|
|
||||||
|
|
||||||
|
# List any extra directories to look for include files here.
|
||||||
|
# Each directory must be seperated by a space.
|
||||||
|
# Use forward slashes for directory separators.
|
||||||
|
# For a directory that has spaces, enclose it in quotes.
|
||||||
|
EXTRAINCDIRS =
|
||||||
|
|
||||||
|
|
||||||
|
# Compiler flag to set the C Standard level.
|
||||||
|
# c89 = "ANSI" C
|
||||||
|
# gnu89 = c89 plus GCC extensions
|
||||||
|
# c99 = ISO C99 standard (not yet fully implemented)
|
||||||
|
# gnu99 = c99 plus GCC extensions
|
||||||
|
CSTANDARD = -std=gnu99
|
||||||
|
|
||||||
|
|
||||||
|
# Place -D or -U options here
|
||||||
|
CDEFS = -DF_CPU=$(F_CPU)UL
|
||||||
|
|
||||||
|
# uncomment and adapt these line if you want different UART library buffer size
|
||||||
|
#CDEFS += -DUART_RX_BUFFER_SIZE=128
|
||||||
|
#CDEFS += -DUART_TX_BUFFER_SIZE=128
|
||||||
|
|
||||||
|
|
||||||
|
# Place -I options here
|
||||||
|
CINCS =
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#---------------- Compiler Options ----------------
|
||||||
|
# -g*: generate debugging information
|
||||||
|
# -O*: optimization level
|
||||||
|
# -f...: tuning, see GCC manual and avr-libc documentation
|
||||||
|
# -Wall...: warning level
|
||||||
|
# -Wa,...: tell GCC to pass this to the assembler.
|
||||||
|
# -adhlns...: create assembler listing
|
||||||
|
CFLAGS = -g$(DEBUG)
|
||||||
|
CFLAGS += $(CDEFS) $(CINCS)
|
||||||
|
CFLAGS += -O$(OPT)
|
||||||
|
CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
|
||||||
|
CFLAGS += -Wall -Wstrict-prototypes
|
||||||
|
CFLAGS += -Wa,-adhlns=$(<:.c=.lst)
|
||||||
|
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
|
||||||
|
CFLAGS += $(CSTANDARD)
|
||||||
|
|
||||||
|
|
||||||
|
#---------------- Assembler Options ----------------
|
||||||
|
# -Wa,...: tell GCC to pass this to the assembler.
|
||||||
|
# -ahlms: create listing
|
||||||
|
# -gstabs: have the assembler create line number information; note that
|
||||||
|
# for use in COFF files, additional information about filenames
|
||||||
|
# and function names needs to be present in the assembler source
|
||||||
|
# files -- see avr-libc docs [FIXME: not yet described there]
|
||||||
|
ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs
|
||||||
|
|
||||||
|
|
||||||
|
#---------------- Library Options ----------------
|
||||||
|
# Minimalistic printf version
|
||||||
|
PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
|
||||||
|
|
||||||
|
# Floating point printf version (requires MATH_LIB = -lm below)
|
||||||
|
PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt
|
||||||
|
|
||||||
|
# If this is left blank, then it will use the Standard printf version.
|
||||||
|
PRINTF_LIB =
|
||||||
|
#PRINTF_LIB = $(PRINTF_LIB_MIN)
|
||||||
|
#PRINTF_LIB = $(PRINTF_LIB_FLOAT)
|
||||||
|
|
||||||
|
|
||||||
|
# Minimalistic scanf version
|
||||||
|
SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min
|
||||||
|
|
||||||
|
# Floating point + %[ scanf version (requires MATH_LIB = -lm below)
|
||||||
|
SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt
|
||||||
|
|
||||||
|
# If this is left blank, then it will use the Standard scanf version.
|
||||||
|
SCANF_LIB =
|
||||||
|
#SCANF_LIB = $(SCANF_LIB_MIN)
|
||||||
|
#SCANF_LIB = $(SCANF_LIB_FLOAT)
|
||||||
|
|
||||||
|
|
||||||
|
MATH_LIB = -lm
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#---------------- External Memory Options ----------------
|
||||||
|
|
||||||
|
# 64 KB of external RAM, starting after internal RAM (ATmega128!),
|
||||||
|
# used for variables (.data/.bss) and heap (malloc()).
|
||||||
|
#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff
|
||||||
|
|
||||||
|
# 64 KB of external RAM, starting after internal RAM (ATmega128!),
|
||||||
|
# only used for heap (malloc()).
|
||||||
|
#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff
|
||||||
|
|
||||||
|
EXTMEMOPTS =
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#---------------- Linker Options ----------------
|
||||||
|
# -Wl,...: tell GCC to pass this to linker.
|
||||||
|
# -Map: create map file
|
||||||
|
# --cref: add cross reference to map file
|
||||||
|
LDFLAGS = -Wl,-Map=$(TARGET).map,--cref
|
||||||
|
LDFLAGS += $(EXTMEMOPTS)
|
||||||
|
LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#---------------- Programming Options (avrdude) ----------------
|
||||||
|
|
||||||
|
# Programming hardware: alf avr910 avrisp bascom bsd
|
||||||
|
# dt006 pavr picoweb pony-stk200 sp12 stk200 stk500
|
||||||
|
#
|
||||||
|
# Type: avrdude -c ?
|
||||||
|
# to get a full listing.
|
||||||
|
#
|
||||||
|
AVRDUDE_PROGRAMMER = stk500
|
||||||
|
|
||||||
|
# com1 = serial port. Use lpt1 to connect to parallel port.
|
||||||
|
AVRDUDE_PORT = com1 # programmer connected to serial device
|
||||||
|
|
||||||
|
AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex
|
||||||
|
#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep
|
||||||
|
|
||||||
|
|
||||||
|
# Uncomment the following if you want avrdude's erase cycle counter.
|
||||||
|
# Note that this counter needs to be initialized first using -Yn,
|
||||||
|
# see avrdude manual.
|
||||||
|
#AVRDUDE_ERASE_COUNTER = -y
|
||||||
|
|
||||||
|
# Uncomment the following if you do /not/ wish a verification to be
|
||||||
|
# performed after programming the device.
|
||||||
|
#AVRDUDE_NO_VERIFY = -V
|
||||||
|
|
||||||
|
# Increase verbosity level. Please use this when submitting bug
|
||||||
|
# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude>
|
||||||
|
# to submit bug reports.
|
||||||
|
#AVRDUDE_VERBOSE = -v -v
|
||||||
|
|
||||||
|
AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
|
||||||
|
AVRDUDE_FLAGS += $(AVRDUDE_NO_VERIFY)
|
||||||
|
AVRDUDE_FLAGS += $(AVRDUDE_VERBOSE)
|
||||||
|
AVRDUDE_FLAGS += $(AVRDUDE_ERASE_COUNTER)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#---------------- Debugging Options ----------------
|
||||||
|
|
||||||
|
# For simulavr only - target MCU frequency.
|
||||||
|
DEBUG_MFREQ = $(F_CPU)
|
||||||
|
|
||||||
|
# Set the DEBUG_UI to either gdb or insight.
|
||||||
|
# DEBUG_UI = gdb
|
||||||
|
DEBUG_UI = insight
|
||||||
|
|
||||||
|
# Set the debugging back-end to either avarice, simulavr.
|
||||||
|
DEBUG_BACKEND = avarice
|
||||||
|
#DEBUG_BACKEND = simulavr
|
||||||
|
|
||||||
|
# GDB Init Filename.
|
||||||
|
GDBINIT_FILE = __avr_gdbinit
|
||||||
|
|
||||||
|
# When using avarice settings for the JTAG
|
||||||
|
JTAG_DEV = /dev/com1
|
||||||
|
|
||||||
|
# Debugging port used to communicate between GDB / avarice / simulavr.
|
||||||
|
DEBUG_PORT = 4242
|
||||||
|
|
||||||
|
# Debugging host used to communicate between GDB / avarice / simulavr, normally
|
||||||
|
# just set to localhost unless doing some sort of crazy debugging when
|
||||||
|
# avarice is running on a different computer.
|
||||||
|
DEBUG_HOST = localhost
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#============================================================================
|
||||||
|
|
||||||
|
|
||||||
|
# Define programs and commands.
|
||||||
|
SHELL = sh
|
||||||
|
CC = avr-gcc
|
||||||
|
OBJCOPY = avr-objcopy
|
||||||
|
OBJDUMP = avr-objdump
|
||||||
|
SIZE = avr-size
|
||||||
|
NM = avr-nm
|
||||||
|
AVRDUDE = avrdude
|
||||||
|
REMOVE = rm -f
|
||||||
|
COPY = cp
|
||||||
|
WINSHELL = cmd
|
||||||
|
|
||||||
|
|
||||||
|
# Define Messages
|
||||||
|
# English
|
||||||
|
MSG_ERRORS_NONE = Errors: none
|
||||||
|
MSG_BEGIN = -------- begin --------
|
||||||
|
MSG_END = -------- end --------
|
||||||
|
MSG_SIZE_BEFORE = Size before:
|
||||||
|
MSG_SIZE_AFTER = Size after:
|
||||||
|
MSG_COFF = Converting to AVR COFF:
|
||||||
|
MSG_EXTENDED_COFF = Converting to AVR Extended COFF:
|
||||||
|
MSG_FLASH = Creating load file for Flash:
|
||||||
|
MSG_EEPROM = Creating load file for EEPROM:
|
||||||
|
MSG_EXTENDED_LISTING = Creating Extended Listing:
|
||||||
|
MSG_SYMBOL_TABLE = Creating Symbol Table:
|
||||||
|
MSG_LINKING = Linking:
|
||||||
|
MSG_COMPILING = Compiling:
|
||||||
|
MSG_ASSEMBLING = Assembling:
|
||||||
|
MSG_CLEANING = Cleaning project:
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Define all object files.
|
||||||
|
OBJ = $(SRC:.c=.o) $(ASRC:.S=.o)
|
||||||
|
|
||||||
|
# Define all listing files.
|
||||||
|
LST = $(SRC:.c=.lst) $(ASRC:.S=.lst)
|
||||||
|
|
||||||
|
|
||||||
|
# Compiler flags to generate dependency files.
|
||||||
|
GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d
|
||||||
|
|
||||||
|
|
||||||
|
# Combine all necessary flags and optional flags.
|
||||||
|
# Add target processor to flags.
|
||||||
|
ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS)
|
||||||
|
ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Default target.
|
||||||
|
all: begin gccversion sizebefore build sizeafter end
|
||||||
|
|
||||||
|
build: elf hex eep lss sym
|
||||||
|
|
||||||
|
elf: $(TARGET).elf
|
||||||
|
hex: $(TARGET).hex
|
||||||
|
eep: $(TARGET).eep
|
||||||
|
lss: $(TARGET).lss
|
||||||
|
sym: $(TARGET).sym
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Eye candy.
|
||||||
|
# AVR Studio 3.x does not check make's exit code but relies on
|
||||||
|
# the following magic strings to be generated by the compile job.
|
||||||
|
begin:
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_BEGIN)
|
||||||
|
|
||||||
|
end:
|
||||||
|
@echo $(MSG_END)
|
||||||
|
@echo
|
||||||
|
|
||||||
|
|
||||||
|
# Display size of file.
|
||||||
|
HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
|
||||||
|
ELFSIZE = $(SIZE) -A $(TARGET).elf
|
||||||
|
AVRMEM = avr-mem.sh $(TARGET).elf $(MCU)
|
||||||
|
|
||||||
|
sizebefore:
|
||||||
|
@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); \
|
||||||
|
$(AVRMEM) 2>/dev/null; echo; fi
|
||||||
|
|
||||||
|
sizeafter:
|
||||||
|
@if test -f $(TARGET).elf; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); \
|
||||||
|
$(AVRMEM) 2>/dev/null; echo; fi
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Display compiler version information.
|
||||||
|
gccversion :
|
||||||
|
@$(CC) --version
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Program the device.
|
||||||
|
program: $(TARGET).hex $(TARGET).eep
|
||||||
|
$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
|
||||||
|
|
||||||
|
|
||||||
|
# Generate avr-gdb config/init file which does the following:
|
||||||
|
# define the reset signal, load the target file, connect to target, and set
|
||||||
|
# a breakpoint at main().
|
||||||
|
gdb-config:
|
||||||
|
@$(REMOVE) $(GDBINIT_FILE)
|
||||||
|
@echo define reset >> $(GDBINIT_FILE)
|
||||||
|
@echo SIGNAL SIGHUP >> $(GDBINIT_FILE)
|
||||||
|
@echo end >> $(GDBINIT_FILE)
|
||||||
|
@echo file $(TARGET).elf >> $(GDBINIT_FILE)
|
||||||
|
@echo target remote $(DEBUG_HOST):$(DEBUG_PORT) >> $(GDBINIT_FILE)
|
||||||
|
ifeq ($(DEBUG_BACKEND),simulavr)
|
||||||
|
@echo load >> $(GDBINIT_FILE)
|
||||||
|
endif
|
||||||
|
@echo break main >> $(GDBINIT_FILE)
|
||||||
|
|
||||||
|
debug: gdb-config $(TARGET).elf
|
||||||
|
ifeq ($(DEBUG_BACKEND), avarice)
|
||||||
|
@echo Starting AVaRICE - Press enter when "waiting to connect" message displays.
|
||||||
|
@$(WINSHELL) /c start avarice --jtag $(JTAG_DEV) --erase --program --file \
|
||||||
|
$(TARGET).elf $(DEBUG_HOST):$(DEBUG_PORT)
|
||||||
|
@$(WINSHELL) /c pause
|
||||||
|
|
||||||
|
else
|
||||||
|
@$(WINSHELL) /c start simulavr --gdbserver --device $(MCU) --clock-freq \
|
||||||
|
$(DEBUG_MFREQ) --port $(DEBUG_PORT)
|
||||||
|
endif
|
||||||
|
@$(WINSHELL) /c start avr-$(DEBUG_UI) --command=$(GDBINIT_FILE)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
|
||||||
|
COFFCONVERT=$(OBJCOPY) --debugging \
|
||||||
|
--change-section-address .data-0x800000 \
|
||||||
|
--change-section-address .bss-0x800000 \
|
||||||
|
--change-section-address .noinit-0x800000 \
|
||||||
|
--change-section-address .eeprom-0x810000
|
||||||
|
|
||||||
|
|
||||||
|
coff: $(TARGET).elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_COFF) $(TARGET).cof
|
||||||
|
$(COFFCONVERT) -O coff-avr $< $(TARGET).cof
|
||||||
|
|
||||||
|
|
||||||
|
extcoff: $(TARGET).elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_EXTENDED_COFF) $(TARGET).cof
|
||||||
|
$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Create final output files (.hex, .eep) from ELF output file.
|
||||||
|
%.hex: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_FLASH) $@
|
||||||
|
$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
|
||||||
|
|
||||||
|
%.eep: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_EEPROM) $@
|
||||||
|
-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
|
||||||
|
--change-section-lma .eeprom=0 -O $(FORMAT) $< $@
|
||||||
|
|
||||||
|
# Create extended listing file from ELF output file.
|
||||||
|
%.lss: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_EXTENDED_LISTING) $@
|
||||||
|
$(OBJDUMP) -h -S $< > $@
|
||||||
|
|
||||||
|
# Create a symbol table from ELF output file.
|
||||||
|
%.sym: %.elf
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_SYMBOL_TABLE) $@
|
||||||
|
$(NM) -n $< > $@
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Link: create ELF output file from object files.
|
||||||
|
.SECONDARY : $(TARGET).elf
|
||||||
|
.PRECIOUS : $(OBJ)
|
||||||
|
%.elf: $(OBJ)
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_LINKING) $@
|
||||||
|
$(CC) $(ALL_CFLAGS) $^ --output $@ $(LDFLAGS)
|
||||||
|
|
||||||
|
|
||||||
|
# Compile: create object files from C source files.
|
||||||
|
%.o : %.c
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_COMPILING) $<
|
||||||
|
$(CC) -c $(ALL_CFLAGS) $< -o $@
|
||||||
|
|
||||||
|
|
||||||
|
# Compile: create assembler files from C source files.
|
||||||
|
%.s : %.c
|
||||||
|
$(CC) -S $(ALL_CFLAGS) $< -o $@
|
||||||
|
|
||||||
|
|
||||||
|
# Assemble: create object files from assembler source files.
|
||||||
|
%.o : %.S
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_ASSEMBLING) $<
|
||||||
|
$(CC) -c $(ALL_ASFLAGS) $< -o $@
|
||||||
|
|
||||||
|
# Create preprocessed source for use in sending a bug report.
|
||||||
|
%.i : %.c
|
||||||
|
$(CC) -E -mmcu=$(MCU) -I. $(CFLAGS) $< -o $@
|
||||||
|
|
||||||
|
|
||||||
|
# Target: clean project.
|
||||||
|
clean: begin clean_list end
|
||||||
|
|
||||||
|
clean_list :
|
||||||
|
@echo
|
||||||
|
@echo $(MSG_CLEANING)
|
||||||
|
$(REMOVE) $(TARGET).hex
|
||||||
|
$(REMOVE) $(TARGET).eep
|
||||||
|
$(REMOVE) $(TARGET).cof
|
||||||
|
$(REMOVE) $(TARGET).elf
|
||||||
|
$(REMOVE) $(TARGET).map
|
||||||
|
$(REMOVE) $(TARGET).sym
|
||||||
|
$(REMOVE) $(TARGET).lss
|
||||||
|
$(REMOVE) $(OBJ)
|
||||||
|
$(REMOVE) $(LST)
|
||||||
|
$(REMOVE) $(SRC:.c=.s)
|
||||||
|
$(REMOVE) $(SRC:.c=.d)
|
||||||
|
$(REMOVE) .dep/*
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
# Include the dependency files.
|
||||||
|
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
|
||||||
|
|
||||||
|
|
||||||
|
# Listing of phony targets.
|
||||||
|
.PHONY : all begin finish end sizebefore sizeafter gccversion \
|
||||||
|
build elf hex eep lss sym coff extcoff \
|
||||||
|
clean clean_list program debug gdb-config
|
||||||
|
|
||||||
|
|
@ -0,0 +1,130 @@
|
||||||
|
/*************************************************************************
|
||||||
|
Title: example program for the Interrupt controlled UART library
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: test_uart.c,v 1.4 2005/07/10 11:46:30 Peter Exp $
|
||||||
|
Software: AVR-GCC 3.3
|
||||||
|
Hardware: any AVR with built-in UART, tested on AT90S8515 at 4 Mhz
|
||||||
|
|
||||||
|
DESCRIPTION:
|
||||||
|
This example shows how to use the UART library uart.c
|
||||||
|
|
||||||
|
*************************************************************************/
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/interrupt.h>
|
||||||
|
#include <avr/signal.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
|
||||||
|
#include "uart.h"
|
||||||
|
|
||||||
|
|
||||||
|
/* define CPU frequency in Mhz here if not defined in Makefile */
|
||||||
|
#ifndef F_CPU
|
||||||
|
#define F_CPU 4000000UL
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* 9600 baud */
|
||||||
|
#define UART_BAUD_RATE 9600
|
||||||
|
|
||||||
|
|
||||||
|
int main(void)
|
||||||
|
{
|
||||||
|
unsigned int c;
|
||||||
|
char buffer[7];
|
||||||
|
int num=134;
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Initialize UART library, pass baudrate and AVR cpu clock
|
||||||
|
* with the macro
|
||||||
|
* UART_BAUD_SELECT() (normal speed mode )
|
||||||
|
* or
|
||||||
|
* UART_BAUD_SELECT_DOUBLE_SPEED() ( double speed mode)
|
||||||
|
*/
|
||||||
|
uart_init( UART_BAUD_SELECT(UART_BAUD_RATE,F_CPU) );
|
||||||
|
|
||||||
|
/*
|
||||||
|
* now enable interrupt, since UART library is interrupt controlled
|
||||||
|
*/
|
||||||
|
sei();
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Transmit string to UART
|
||||||
|
* The string is buffered by the uart library in a circular buffer
|
||||||
|
* and one character at a time is transmitted to the UART using interrupts.
|
||||||
|
* uart_puts() blocks if it can not write the whole string to the circular
|
||||||
|
* buffer
|
||||||
|
*/
|
||||||
|
uart_puts("String stored in SRAM\n");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Transmit string from program memory to UART
|
||||||
|
*/
|
||||||
|
uart_puts_P("String stored in FLASH\n");
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Use standard avr-libc functions to convert numbers into string
|
||||||
|
* before transmitting via UART
|
||||||
|
*/
|
||||||
|
itoa( num, buffer, 10); // convert interger into string (decimal format)
|
||||||
|
uart_puts(buffer); // and transmit string to UART
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Transmit single character to UART
|
||||||
|
*/
|
||||||
|
uart_putc('\r');
|
||||||
|
|
||||||
|
for(;;)
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* Get received character from ringbuffer
|
||||||
|
* uart_getc() returns in the lower byte the received character and
|
||||||
|
* in the higher byte (bitmask) the last receive error
|
||||||
|
* UART_NO_DATA is returned when no data is available.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
c = uart_getc();
|
||||||
|
if ( c & UART_NO_DATA )
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* no data available from UART
|
||||||
|
*/
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* new data available from UART
|
||||||
|
* check for Frame or Overrun error
|
||||||
|
*/
|
||||||
|
if ( c & UART_FRAME_ERROR )
|
||||||
|
{
|
||||||
|
/* Framing Error detected, i.e no stop bit detected */
|
||||||
|
uart_puts_P("UART Frame Error: ");
|
||||||
|
}
|
||||||
|
if ( c & UART_OVERRUN_ERROR )
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* Overrun, a character already present in the UART UDR register was
|
||||||
|
* not read by the interrupt handler before the next character arrived,
|
||||||
|
* one or more received characters have been dropped
|
||||||
|
*/
|
||||||
|
uart_puts_P("UART Overrun Error: ");
|
||||||
|
}
|
||||||
|
if ( c & UART_BUFFER_OVERFLOW )
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
* We are not reading the receive buffer fast enough,
|
||||||
|
* one or more received character have been dropped
|
||||||
|
*/
|
||||||
|
uart_puts_P("Buffer overflow error: ");
|
||||||
|
}
|
||||||
|
/*
|
||||||
|
* send received character back
|
||||||
|
*/
|
||||||
|
uart_putc( (unsigned char)c );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,651 @@
|
||||||
|
/*************************************************************************
|
||||||
|
Title: Interrupt UART library with receive/transmit circular buffers
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: uart.c,v 1.6.2.1 2007/07/01 11:14:38 peter Exp $
|
||||||
|
Software: AVR-GCC 4.1, AVR Libc 1.4.6 or higher
|
||||||
|
Hardware: any AVR with built-in UART,
|
||||||
|
License: GNU General Public License
|
||||||
|
|
||||||
|
DESCRIPTION:
|
||||||
|
An interrupt is generated when the UART has finished transmitting or
|
||||||
|
receiving a byte. The interrupt handling routines use circular buffers
|
||||||
|
for buffering received and transmitted data.
|
||||||
|
|
||||||
|
The UART_RX_BUFFER_SIZE and UART_TX_BUFFER_SIZE variables define
|
||||||
|
the buffer size in bytes. Note that these variables must be a
|
||||||
|
power of 2.
|
||||||
|
|
||||||
|
USAGE:
|
||||||
|
Refere to the header file uart.h for a description of the routines.
|
||||||
|
See also example test_uart.c.
|
||||||
|
|
||||||
|
NOTES:
|
||||||
|
Based on Atmel Application Note AVR306
|
||||||
|
|
||||||
|
LICENSE:
|
||||||
|
Copyright (C) 2006 Peter Fleury
|
||||||
|
|
||||||
|
This program is free software; you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation; either version 2 of the License, or
|
||||||
|
any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
*************************************************************************/
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/interrupt.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
#include "uart.h"
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* constants and macros
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* size of RX/TX buffers */
|
||||||
|
#define UART_RX_BUFFER_MASK ( UART_RX_BUFFER_SIZE - 1)
|
||||||
|
#define UART_TX_BUFFER_MASK ( UART_TX_BUFFER_SIZE - 1)
|
||||||
|
|
||||||
|
#if ( UART_RX_BUFFER_SIZE & UART_RX_BUFFER_MASK )
|
||||||
|
#error RX buffer size is not a power of 2
|
||||||
|
#endif
|
||||||
|
#if ( UART_TX_BUFFER_SIZE & UART_TX_BUFFER_MASK )
|
||||||
|
#error TX buffer size is not a power of 2
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if defined(__AVR_AT90S2313__) \
|
||||||
|
|| defined(__AVR_AT90S4414__) || defined(__AVR_AT90S4434__) \
|
||||||
|
|| defined(__AVR_AT90S8515__) || defined(__AVR_AT90S8535__) \
|
||||||
|
|| defined(__AVR_ATmega103__)
|
||||||
|
/* old AVR classic or ATmega103 with one UART */
|
||||||
|
#define AT90_UART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_UART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_UART_DATA
|
||||||
|
#define UART0_STATUS USR
|
||||||
|
#define UART0_CONTROL UCR
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_AT90S2333__) || defined(__AVR_AT90S4433__)
|
||||||
|
/* old AVR classic with one UART */
|
||||||
|
#define AT90_UART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_UART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_UART_DATA
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega8__) || defined(__AVR_ATmega16__) || defined(__AVR_ATmega32__) \
|
||||||
|
|| defined(__AVR_ATmega8515__) || defined(__AVR_ATmega8535__) \
|
||||||
|
|| defined(__AVR_ATmega323__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_UART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_UART_DATA
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega163__)
|
||||||
|
/* ATmega163 with one UART */
|
||||||
|
#define ATMEGA_UART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_UART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_UART_DATA
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega162__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_USART0_RECV
|
||||||
|
#define UART1_RECEIVE_INTERRUPT SIG_USART1_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_USART0_DATA
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT SIG_USART1_DATA
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_UART0_RECV
|
||||||
|
#define UART1_RECEIVE_INTERRUPT SIG_UART1_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_UART0_DATA
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT SIG_UART1_DATA
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#elif defined(__AVR_ATmega161__)
|
||||||
|
/* ATmega with UART */
|
||||||
|
#error "AVR ATmega161 currently not supported by this libaray !"
|
||||||
|
#elif defined(__AVR_ATmega169__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_USART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_USART_DATA
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega48__) ||defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_USART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_USART_DATA
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#elif defined(__AVR_ATtiny2313__)
|
||||||
|
#define ATMEGA_USART
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_USART0_RX
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_USART0_UDRE
|
||||||
|
#define UART0_STATUS UCSRA
|
||||||
|
#define UART0_CONTROL UCSRB
|
||||||
|
#define UART0_DATA UDR
|
||||||
|
#define UART0_UDRIE UDRIE
|
||||||
|
#elif defined(__AVR_ATmega329__) ||defined(__AVR_ATmega3290__) ||\
|
||||||
|
defined(__AVR_ATmega649__) ||defined(__AVR_ATmega6490__) ||\
|
||||||
|
defined(__AVR_ATmega325__) ||defined(__AVR_ATmega3250__) ||\
|
||||||
|
defined(__AVR_ATmega645__) ||defined(__AVR_ATmega6450__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_UART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_UART_DATA
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#elif defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega640__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_USART0_RECV
|
||||||
|
#define UART1_RECEIVE_INTERRUPT SIG_USART1_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_USART0_DATA
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT SIG_USART1_DATA
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#elif defined(__AVR_ATmega644__)
|
||||||
|
/* ATmega with one USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_USART_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_USART_DATA
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#elif defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__)
|
||||||
|
/* ATmega with two USART */
|
||||||
|
#define ATMEGA_USART0
|
||||||
|
#define ATMEGA_USART1
|
||||||
|
#define UART0_RECEIVE_INTERRUPT SIG_USART_RECV
|
||||||
|
#define UART1_RECEIVE_INTERRUPT SIG_USART1_RECV
|
||||||
|
#define UART0_TRANSMIT_INTERRUPT SIG_USART_DATA
|
||||||
|
#define UART1_TRANSMIT_INTERRUPT SIG_USART1_DATA
|
||||||
|
#define UART0_STATUS UCSR0A
|
||||||
|
#define UART0_CONTROL UCSR0B
|
||||||
|
#define UART0_DATA UDR0
|
||||||
|
#define UART0_UDRIE UDRIE0
|
||||||
|
#define UART1_STATUS UCSR1A
|
||||||
|
#define UART1_CONTROL UCSR1B
|
||||||
|
#define UART1_DATA UDR1
|
||||||
|
#define UART1_UDRIE UDRIE1
|
||||||
|
#else
|
||||||
|
#error "no UART definition for MCU available"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* module global variables
|
||||||
|
*/
|
||||||
|
static volatile unsigned char UART_TxBuf[UART_TX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART_RxBuf[UART_RX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART_TxHead;
|
||||||
|
static volatile unsigned char UART_TxTail;
|
||||||
|
static volatile unsigned char UART_RxHead;
|
||||||
|
static volatile unsigned char UART_RxTail;
|
||||||
|
static volatile unsigned char UART_LastRxError;
|
||||||
|
|
||||||
|
#if defined( ATMEGA_USART1 )
|
||||||
|
static volatile unsigned char UART1_TxBuf[UART_TX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART1_RxBuf[UART_RX_BUFFER_SIZE];
|
||||||
|
static volatile unsigned char UART1_TxHead;
|
||||||
|
static volatile unsigned char UART1_TxTail;
|
||||||
|
static volatile unsigned char UART1_RxHead;
|
||||||
|
static volatile unsigned char UART1_RxTail;
|
||||||
|
static volatile unsigned char UART1_LastRxError;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
SIGNAL(UART0_RECEIVE_INTERRUPT)
|
||||||
|
/*************************************************************************
|
||||||
|
Function: UART Receive Complete interrupt
|
||||||
|
Purpose: called when the UART has received a character
|
||||||
|
**************************************************************************/
|
||||||
|
{
|
||||||
|
unsigned char tmphead;
|
||||||
|
unsigned char data;
|
||||||
|
unsigned char usr;
|
||||||
|
unsigned char lastRxError;
|
||||||
|
|
||||||
|
|
||||||
|
/* read UART status register and UART data register */
|
||||||
|
usr = UART0_STATUS;
|
||||||
|
data = UART0_DATA;
|
||||||
|
|
||||||
|
/* */
|
||||||
|
#if defined( AT90_UART )
|
||||||
|
lastRxError = (usr & (_BV(FE)|_BV(DOR)) );
|
||||||
|
#elif defined( ATMEGA_USART )
|
||||||
|
lastRxError = (usr & (_BV(FE)|_BV(DOR)) );
|
||||||
|
#elif defined( ATMEGA_USART0 )
|
||||||
|
lastRxError = (usr & (_BV(FE0)|_BV(DOR0)) );
|
||||||
|
#elif defined ( ATMEGA_UART )
|
||||||
|
lastRxError = (usr & (_BV(FE)|_BV(DOR)) );
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* calculate buffer index */
|
||||||
|
tmphead = ( UART_RxHead + 1) & UART_RX_BUFFER_MASK;
|
||||||
|
|
||||||
|
if ( tmphead == UART_RxTail ) {
|
||||||
|
/* error: receive buffer overflow */
|
||||||
|
lastRxError = UART_BUFFER_OVERFLOW >> 8;
|
||||||
|
}else{
|
||||||
|
/* store new index */
|
||||||
|
UART_RxHead = tmphead;
|
||||||
|
/* store received data in buffer */
|
||||||
|
UART_RxBuf[tmphead] = data;
|
||||||
|
}
|
||||||
|
UART_LastRxError = lastRxError;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
SIGNAL(UART0_TRANSMIT_INTERRUPT)
|
||||||
|
/*************************************************************************
|
||||||
|
Function: UART Data Register Empty interrupt
|
||||||
|
Purpose: called when the UART is ready to transmit the next byte
|
||||||
|
**************************************************************************/
|
||||||
|
{
|
||||||
|
unsigned char tmptail;
|
||||||
|
|
||||||
|
|
||||||
|
if ( UART_TxHead != UART_TxTail) {
|
||||||
|
/* calculate and store new buffer index */
|
||||||
|
tmptail = (UART_TxTail + 1) & UART_TX_BUFFER_MASK;
|
||||||
|
UART_TxTail = tmptail;
|
||||||
|
/* get one byte from buffer and write it to UART */
|
||||||
|
UART0_DATA = UART_TxBuf[tmptail]; /* start transmission */
|
||||||
|
}else{
|
||||||
|
/* tx buffer empty, disable UDRE interrupt */
|
||||||
|
UART0_CONTROL &= ~_BV(UART0_UDRIE);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_init()
|
||||||
|
Purpose: initialize UART and set baudrate
|
||||||
|
Input: baudrate using macro UART_BAUD_SELECT()
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_init(unsigned int baudrate)
|
||||||
|
{
|
||||||
|
UART_TxHead = 0;
|
||||||
|
UART_TxTail = 0;
|
||||||
|
UART_RxHead = 0;
|
||||||
|
UART_RxTail = 0;
|
||||||
|
|
||||||
|
#if defined( AT90_UART )
|
||||||
|
/* set baud rate */
|
||||||
|
UBRR = (unsigned char)baudrate;
|
||||||
|
|
||||||
|
/* enable UART receiver and transmmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE)|_BV(RXEN)|_BV(TXEN);
|
||||||
|
|
||||||
|
#elif defined (ATMEGA_USART)
|
||||||
|
/* Set baud rate */
|
||||||
|
if ( baudrate & 0x8000 )
|
||||||
|
{
|
||||||
|
UART0_STATUS = (1<<U2X); //Enable 2x speed
|
||||||
|
baudrate &= ~0x8000;
|
||||||
|
}
|
||||||
|
UBRRH = (unsigned char)(baudrate>>8);
|
||||||
|
UBRRL = (unsigned char) baudrate;
|
||||||
|
|
||||||
|
/* Enable USART receiver and transmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE)|(1<<RXEN)|(1<<TXEN);
|
||||||
|
|
||||||
|
/* Set frame format: asynchronous, 8data, no parity, 1stop bit */
|
||||||
|
#ifdef URSEL
|
||||||
|
UCSRC = (1<<URSEL)|(3<<UCSZ0);
|
||||||
|
#else
|
||||||
|
UCSRC = (3<<UCSZ0);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#elif defined (ATMEGA_USART0 )
|
||||||
|
/* Set baud rate */
|
||||||
|
if ( baudrate & 0x8000 )
|
||||||
|
{
|
||||||
|
UART0_STATUS = (1<<U2X0); //Enable 2x speed
|
||||||
|
baudrate &= ~0x8000;
|
||||||
|
}
|
||||||
|
UBRR0H = (unsigned char)(baudrate>>8);
|
||||||
|
UBRR0L = (unsigned char) baudrate;
|
||||||
|
|
||||||
|
/* Enable USART receiver and transmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE0)|(1<<RXEN0)|(1<<TXEN0);
|
||||||
|
|
||||||
|
/* Set frame format: asynchronous, 8data, no parity, 1stop bit */
|
||||||
|
#ifdef URSEL0
|
||||||
|
UCSR0C = (1<<URSEL0)|(3<<UCSZ00);
|
||||||
|
#else
|
||||||
|
UCSR0C = (3<<UCSZ00);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#elif defined ( ATMEGA_UART )
|
||||||
|
/* set baud rate */
|
||||||
|
if ( baudrate & 0x8000 )
|
||||||
|
{
|
||||||
|
UART0_STATUS = (1<<U2X); //Enable 2x speed
|
||||||
|
baudrate &= ~0x8000;
|
||||||
|
}
|
||||||
|
UBRRHI = (unsigned char)(baudrate>>8);
|
||||||
|
UBRR = (unsigned char) baudrate;
|
||||||
|
|
||||||
|
/* Enable UART receiver and transmitter and receive complete interrupt */
|
||||||
|
UART0_CONTROL = _BV(RXCIE)|(1<<RXEN)|(1<<TXEN);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
}/* uart_init */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_getc()
|
||||||
|
Purpose: return byte from ringbuffer
|
||||||
|
Returns: lower byte: received byte from ringbuffer
|
||||||
|
higher byte: last receive error
|
||||||
|
**************************************************************************/
|
||||||
|
unsigned int uart_getc(void)
|
||||||
|
{
|
||||||
|
unsigned char tmptail;
|
||||||
|
unsigned char data;
|
||||||
|
|
||||||
|
|
||||||
|
if ( UART_RxHead == UART_RxTail ) {
|
||||||
|
return UART_NO_DATA; /* no data available */
|
||||||
|
}
|
||||||
|
|
||||||
|
/* calculate /store buffer index */
|
||||||
|
tmptail = (UART_RxTail + 1) & UART_RX_BUFFER_MASK;
|
||||||
|
UART_RxTail = tmptail;
|
||||||
|
|
||||||
|
/* get data from receive buffer */
|
||||||
|
data = UART_RxBuf[tmptail];
|
||||||
|
|
||||||
|
return (UART_LastRxError << 8) + data;
|
||||||
|
|
||||||
|
}/* uart_getc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_putc()
|
||||||
|
Purpose: write byte to ringbuffer for transmitting via UART
|
||||||
|
Input: byte to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_putc(unsigned char data)
|
||||||
|
{
|
||||||
|
unsigned char tmphead;
|
||||||
|
|
||||||
|
|
||||||
|
tmphead = (UART_TxHead + 1) & UART_TX_BUFFER_MASK;
|
||||||
|
|
||||||
|
while ( tmphead == UART_TxTail ){
|
||||||
|
;/* wait for free space in buffer */
|
||||||
|
}
|
||||||
|
|
||||||
|
UART_TxBuf[tmphead] = data;
|
||||||
|
UART_TxHead = tmphead;
|
||||||
|
|
||||||
|
/* enable UDRE interrupt */
|
||||||
|
UART0_CONTROL |= _BV(UART0_UDRIE);
|
||||||
|
|
||||||
|
}/* uart_putc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_puts()
|
||||||
|
Purpose: transmit string to UART
|
||||||
|
Input: string to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_puts(const char *s )
|
||||||
|
{
|
||||||
|
while (*s)
|
||||||
|
uart_putc(*s++);
|
||||||
|
|
||||||
|
}/* uart_puts */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart_puts_p()
|
||||||
|
Purpose: transmit string from program memory to UART
|
||||||
|
Input: program memory string to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart_puts_p(const char *progmem_s )
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = pgm_read_byte(progmem_s++)) )
|
||||||
|
uart_putc(c);
|
||||||
|
|
||||||
|
}/* uart_puts_p */
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* these functions are only for ATmegas with two USART
|
||||||
|
*/
|
||||||
|
#if defined( ATMEGA_USART1 )
|
||||||
|
|
||||||
|
SIGNAL(UART1_RECEIVE_INTERRUPT)
|
||||||
|
/*************************************************************************
|
||||||
|
Function: UART1 Receive Complete interrupt
|
||||||
|
Purpose: called when the UART1 has received a character
|
||||||
|
**************************************************************************/
|
||||||
|
{
|
||||||
|
unsigned char tmphead;
|
||||||
|
unsigned char data;
|
||||||
|
unsigned char usr;
|
||||||
|
unsigned char lastRxError;
|
||||||
|
|
||||||
|
|
||||||
|
/* read UART status register and UART data register */
|
||||||
|
usr = UART1_STATUS;
|
||||||
|
data = UART1_DATA;
|
||||||
|
|
||||||
|
/* */
|
||||||
|
lastRxError = (usr & (_BV(FE1)|_BV(DOR1)) );
|
||||||
|
|
||||||
|
/* calculate buffer index */
|
||||||
|
tmphead = ( UART1_RxHead + 1) & UART_RX_BUFFER_MASK;
|
||||||
|
|
||||||
|
if ( tmphead == UART1_RxTail ) {
|
||||||
|
/* error: receive buffer overflow */
|
||||||
|
lastRxError = UART_BUFFER_OVERFLOW >> 8;
|
||||||
|
}else{
|
||||||
|
/* store new index */
|
||||||
|
UART1_RxHead = tmphead;
|
||||||
|
/* store received data in buffer */
|
||||||
|
UART1_RxBuf[tmphead] = data;
|
||||||
|
}
|
||||||
|
UART1_LastRxError = lastRxError;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
SIGNAL(UART1_TRANSMIT_INTERRUPT)
|
||||||
|
/*************************************************************************
|
||||||
|
Function: UART1 Data Register Empty interrupt
|
||||||
|
Purpose: called when the UART1 is ready to transmit the next byte
|
||||||
|
**************************************************************************/
|
||||||
|
{
|
||||||
|
unsigned char tmptail;
|
||||||
|
|
||||||
|
|
||||||
|
if ( UART1_TxHead != UART1_TxTail) {
|
||||||
|
/* calculate and store new buffer index */
|
||||||
|
tmptail = (UART1_TxTail + 1) & UART_TX_BUFFER_MASK;
|
||||||
|
UART1_TxTail = tmptail;
|
||||||
|
/* get one byte from buffer and write it to UART */
|
||||||
|
UART1_DATA = UART1_TxBuf[tmptail]; /* start transmission */
|
||||||
|
}else{
|
||||||
|
/* tx buffer empty, disable UDRE interrupt */
|
||||||
|
UART1_CONTROL &= ~_BV(UART1_UDRIE);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart1_init()
|
||||||
|
Purpose: initialize UART1 and set baudrate
|
||||||
|
Input: baudrate using macro UART_BAUD_SELECT()
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart1_init(unsigned int baudrate)
|
||||||
|
{
|
||||||
|
UART1_TxHead = 0;
|
||||||
|
UART1_TxTail = 0;
|
||||||
|
UART1_RxHead = 0;
|
||||||
|
UART1_RxTail = 0;
|
||||||
|
|
||||||
|
|
||||||
|
/* Set baud rate */
|
||||||
|
if ( baudrate & 0x8000 )
|
||||||
|
{
|
||||||
|
UART1_STATUS = (1<<U2X1); //Enable 2x speed
|
||||||
|
baudrate &= ~0x8000;
|
||||||
|
}
|
||||||
|
UBRR1H = (unsigned char)(baudrate>>8);
|
||||||
|
UBRR1L = (unsigned char) baudrate;
|
||||||
|
|
||||||
|
/* Enable USART receiver and transmitter and receive complete interrupt */
|
||||||
|
UART1_CONTROL = _BV(RXCIE1)|(1<<RXEN1)|(1<<TXEN1);
|
||||||
|
|
||||||
|
/* Set frame format: asynchronous, 8data, no parity, 1stop bit */
|
||||||
|
#ifdef URSEL1
|
||||||
|
UCSR1C = (1<<URSEL1)|(3<<UCSZ10);
|
||||||
|
#else
|
||||||
|
UCSR1C = (3<<UCSZ10);
|
||||||
|
#endif
|
||||||
|
}/* uart_init */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart1_getc()
|
||||||
|
Purpose: return byte from ringbuffer
|
||||||
|
Returns: lower byte: received byte from ringbuffer
|
||||||
|
higher byte: last receive error
|
||||||
|
**************************************************************************/
|
||||||
|
unsigned int uart1_getc(void)
|
||||||
|
{
|
||||||
|
unsigned char tmptail;
|
||||||
|
unsigned char data;
|
||||||
|
|
||||||
|
|
||||||
|
if ( UART1_RxHead == UART1_RxTail ) {
|
||||||
|
return UART_NO_DATA; /* no data available */
|
||||||
|
}
|
||||||
|
|
||||||
|
/* calculate /store buffer index */
|
||||||
|
tmptail = (UART1_RxTail + 1) & UART_RX_BUFFER_MASK;
|
||||||
|
UART1_RxTail = tmptail;
|
||||||
|
|
||||||
|
/* get data from receive buffer */
|
||||||
|
data = UART1_RxBuf[tmptail];
|
||||||
|
|
||||||
|
return (UART1_LastRxError << 8) + data;
|
||||||
|
|
||||||
|
}/* uart1_getc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart1_putc()
|
||||||
|
Purpose: write byte to ringbuffer for transmitting via UART
|
||||||
|
Input: byte to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart1_putc(unsigned char data)
|
||||||
|
{
|
||||||
|
unsigned char tmphead;
|
||||||
|
|
||||||
|
|
||||||
|
tmphead = (UART1_TxHead + 1) & UART_TX_BUFFER_MASK;
|
||||||
|
|
||||||
|
while ( tmphead == UART1_TxTail ){
|
||||||
|
;/* wait for free space in buffer */
|
||||||
|
}
|
||||||
|
|
||||||
|
UART1_TxBuf[tmphead] = data;
|
||||||
|
UART1_TxHead = tmphead;
|
||||||
|
|
||||||
|
/* enable UDRE interrupt */
|
||||||
|
UART1_CONTROL |= _BV(UART1_UDRIE);
|
||||||
|
|
||||||
|
}/* uart1_putc */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart1_puts()
|
||||||
|
Purpose: transmit string to UART1
|
||||||
|
Input: string to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart1_puts(const char *s )
|
||||||
|
{
|
||||||
|
while (*s)
|
||||||
|
uart1_putc(*s++);
|
||||||
|
|
||||||
|
}/* uart1_puts */
|
||||||
|
|
||||||
|
|
||||||
|
/*************************************************************************
|
||||||
|
Function: uart1_puts_p()
|
||||||
|
Purpose: transmit string from program memory to UART1
|
||||||
|
Input: program memory string to be transmitted
|
||||||
|
Returns: none
|
||||||
|
**************************************************************************/
|
||||||
|
void uart1_puts_p(const char *progmem_s )
|
||||||
|
{
|
||||||
|
register char c;
|
||||||
|
|
||||||
|
while ( (c = pgm_read_byte(progmem_s++)) )
|
||||||
|
uart1_putc(c);
|
||||||
|
|
||||||
|
}/* uart1_puts_p */
|
||||||
|
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
@ -0,0 +1,194 @@
|
||||||
|
#ifndef UART_H
|
||||||
|
#define UART_H
|
||||||
|
/************************************************************************
|
||||||
|
Title: Interrupt UART library with receive/transmit circular buffers
|
||||||
|
Author: Peter Fleury <pfleury@gmx.ch> http://jump.to/fleury
|
||||||
|
File: $Id: uart.h,v 1.8.2.1 2007/07/01 11:14:38 peter Exp $
|
||||||
|
Software: AVR-GCC 4.1, AVR Libc 1.4
|
||||||
|
Hardware: any AVR with built-in UART, tested on AT90S8515 & ATmega8 at 4 Mhz
|
||||||
|
License: GNU General Public License
|
||||||
|
Usage: see Doxygen manual
|
||||||
|
|
||||||
|
LICENSE:
|
||||||
|
Copyright (C) 2006 Peter Fleury
|
||||||
|
|
||||||
|
This program is free software; you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation; either version 2 of the License, or
|
||||||
|
any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
************************************************************************/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @defgroup pfleury_uart UART Library
|
||||||
|
* @code #include <uart.h> @endcode
|
||||||
|
*
|
||||||
|
* @brief Interrupt UART library using the built-in UART with transmit and receive circular buffers.
|
||||||
|
*
|
||||||
|
* This library can be used to transmit and receive data through the built in UART.
|
||||||
|
*
|
||||||
|
* An interrupt is generated when the UART has finished transmitting or
|
||||||
|
* receiving a byte. The interrupt handling routines use circular buffers
|
||||||
|
* for buffering received and transmitted data.
|
||||||
|
*
|
||||||
|
* The UART_RX_BUFFER_SIZE and UART_TX_BUFFER_SIZE constants define
|
||||||
|
* the size of the circular buffers in bytes. Note that these constants must be a power of 2.
|
||||||
|
* You may need to adapt this constants to your target and your application by adding
|
||||||
|
* CDEFS += -DUART_RX_BUFFER_SIZE=nn -DUART_RX_BUFFER_SIZE=nn to your Makefile.
|
||||||
|
*
|
||||||
|
* @note Based on Atmel Application Note AVR306
|
||||||
|
* @author Peter Fleury pfleury@gmx.ch http://jump.to/fleury
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**@{*/
|
||||||
|
|
||||||
|
|
||||||
|
#if (__GNUC__ * 100 + __GNUC_MINOR__) < 304
|
||||||
|
#error "This library requires AVR-GCC 3.4 or later, update to newer AVR-GCC compiler !"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** constants and macros
|
||||||
|
*/
|
||||||
|
|
||||||
|
/** @brief UART Baudrate Expression
|
||||||
|
* @param xtalcpu system clock in Mhz, e.g. 4000000L for 4Mhz
|
||||||
|
* @param baudrate baudrate in bps, e.g. 1200, 2400, 9600
|
||||||
|
*/
|
||||||
|
#define UART_BAUD_SELECT(baudRate,xtalCpu) ((xtalCpu)/((baudRate)*16l)-1)
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|
/** @brief UART Baudrate Expression for ATmega double speed mode
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|
* @param xtalcpu system clock in Mhz, e.g. 4000000L for 4Mhz
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|
* @param baudrate baudrate in bps, e.g. 1200, 2400, 9600
|
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|
*/
|
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|
#define UART_BAUD_SELECT_DOUBLE_SPEED(baudRate,xtalCpu) (((xtalCpu)/((baudRate)*8l)-1)|0x8000)
|
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|
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|
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|
/** Size of the circular receive buffer, must be power of 2 */
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|
#ifndef UART_RX_BUFFER_SIZE
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|
#define UART_RX_BUFFER_SIZE 32
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|
#endif
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|
/** Size of the circular transmit buffer, must be power of 2 */
|
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|
#ifndef UART_TX_BUFFER_SIZE
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|
#define UART_TX_BUFFER_SIZE 32
|
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|
#endif
|
||||||
|
|
||||||
|
/* test if the size of the circular buffers fits into SRAM */
|
||||||
|
#if ( (UART_RX_BUFFER_SIZE+UART_TX_BUFFER_SIZE) >= (RAMEND-0x60 ) )
|
||||||
|
#error "size of UART_RX_BUFFER_SIZE + UART_TX_BUFFER_SIZE larger than size of SRAM"
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
** high byte error return code of uart_getc()
|
||||||
|
*/
|
||||||
|
#define UART_FRAME_ERROR 0x0800 /* Framing Error by UART */
|
||||||
|
#define UART_OVERRUN_ERROR 0x0400 /* Overrun condition by UART */
|
||||||
|
#define UART_BUFFER_OVERFLOW 0x0200 /* receive ringbuffer overflow */
|
||||||
|
#define UART_NO_DATA 0x0100 /* no receive data available */
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
** function prototypes
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
@brief Initialize UART and set baudrate
|
||||||
|
@param baudrate Specify baudrate using macro UART_BAUD_SELECT()
|
||||||
|
@return none
|
||||||
|
*/
|
||||||
|
extern void uart_init(unsigned int baudrate);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Get received byte from ringbuffer
|
||||||
|
*
|
||||||
|
* Returns in the lower byte the received character and in the
|
||||||
|
* higher byte the last receive error.
|
||||||
|
* UART_NO_DATA is returned when no data is available.
|
||||||
|
*
|
||||||
|
* @param void
|
||||||
|
* @return lower byte: received byte from ringbuffer
|
||||||
|
* @return higher byte: last receive status
|
||||||
|
* - \b 0 successfully received data from UART
|
||||||
|
* - \b UART_NO_DATA
|
||||||
|
* <br>no receive data available
|
||||||
|
* - \b UART_BUFFER_OVERFLOW
|
||||||
|
* <br>Receive ringbuffer overflow.
|
||||||
|
* We are not reading the receive buffer fast enough,
|
||||||
|
* one or more received character have been dropped
|
||||||
|
* - \b UART_OVERRUN_ERROR
|
||||||
|
* <br>Overrun condition by UART.
|
||||||
|
* A character already present in the UART UDR register was
|
||||||
|
* not read by the interrupt handler before the next character arrived,
|
||||||
|
* one or more received characters have been dropped.
|
||||||
|
* - \b UART_FRAME_ERROR
|
||||||
|
* <br>Framing Error by UART
|
||||||
|
*/
|
||||||
|
extern unsigned int uart_getc(void);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Put byte to ringbuffer for transmitting via UART
|
||||||
|
* @param data byte to be transmitted
|
||||||
|
* @return none
|
||||||
|
*/
|
||||||
|
extern void uart_putc(unsigned char data);
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Put string to ringbuffer for transmitting via UART
|
||||||
|
*
|
||||||
|
* The string is buffered by the uart library in a circular buffer
|
||||||
|
* and one character at a time is transmitted to the UART using interrupts.
|
||||||
|
* Blocks if it can not write the whole string into the circular buffer.
|
||||||
|
*
|
||||||
|
* @param s string to be transmitted
|
||||||
|
* @return none
|
||||||
|
*/
|
||||||
|
extern void uart_puts(const char *s );
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Put string from program memory to ringbuffer for transmitting via UART.
|
||||||
|
*
|
||||||
|
* The string is buffered by the uart library in a circular buffer
|
||||||
|
* and one character at a time is transmitted to the UART using interrupts.
|
||||||
|
* Blocks if it can not write the whole string into the circular buffer.
|
||||||
|
*
|
||||||
|
* @param s program memory string to be transmitted
|
||||||
|
* @return none
|
||||||
|
* @see uart_puts_P
|
||||||
|
*/
|
||||||
|
extern void uart_puts_p(const char *s );
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Macro to automatically put a string constant into program memory
|
||||||
|
*/
|
||||||
|
#define uart_puts_P(__s) uart_puts_p(PSTR(__s))
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/** @brief Initialize USART1 (only available on selected ATmegas) @see uart_init */
|
||||||
|
extern void uart1_init(unsigned int baudrate);
|
||||||
|
/** @brief Get received byte of USART1 from ringbuffer. (only available on selected ATmega) @see uart_getc */
|
||||||
|
extern unsigned int uart1_getc(void);
|
||||||
|
/** @brief Put byte to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_putc */
|
||||||
|
extern void uart1_putc(unsigned char data);
|
||||||
|
/** @brief Put string to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts */
|
||||||
|
extern void uart1_puts(const char *s );
|
||||||
|
/** @brief Put string from program memory to ringbuffer for transmitting via USART1 (only available on selected ATmega) @see uart_puts_p */
|
||||||
|
extern void uart1_puts_p(const char *s );
|
||||||
|
/** @brief Macro to automatically put a string constant into program memory */
|
||||||
|
#define uart1_puts_P(__s) uart1_puts_p(PSTR(__s))
|
||||||
|
|
||||||
|
/**@}*/
|
||||||
|
|
||||||
|
|
||||||
|
#endif // UART_H
|
||||||
|
|
||||||
Loading…
Reference in New Issue