Mendel Firmware project Initial Commit
This commit is contained in:
Michael Moon
parent
38a5ffe222
commit
bf8d949fd1
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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 = mendel
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SOURCES = $(PROGRAM).c ringbuffer.c serial.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 -ffunction-sections -save-temps
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LDFLAGS = -Wl,-u,vfprintf -lprintf_min -Wl,--as-needed -Wl,--gc-sections -finline-functions-called-once
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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 = avrdude -F
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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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@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 +1,76 @@
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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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# #
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# Change these to suit your application #
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# #
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##############################################################################
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PROGRAM = mendel
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SOURCES = $(PROGRAM).c ringbuffer.c serial.c lcd.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 -ffunction-sections -save-temps
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LDFLAGS = -Wl,-u,vfprintf -lprintf_min -Wl,--as-needed -Wl,--gc-sections -finline-functions-called-once
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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 = avrdude -F
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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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@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 +1,104 @@
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#ifndef _ARDUINO_H
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#define _ARDUINO_H
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#define PIN_DIO0 PD0
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#define RPORT_DIO0 PIND
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#define WPORT_DIO0 PORTD
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#define DDR_DIO0 DDRD
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#define PIN_DIO1 PD1
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#define RPORT_DIO1 PIND
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#define WPORT_DIO1 PORTD
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#define DDR_DIO1 DDRD
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#define PIN_DIO2 PD2
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#define RPORT_DIO2 PIND
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#define WPORT_DIO2 PORTD
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#define DDR_DIO2 DDRD
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#define PIN_DIO3 PD3
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#define RPORT_DIO3 PIND
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#define WPORT_DIO3 PORTD
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#define DDR_DIO3 DDRD
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#define PIN_DIO4 PD4
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#define RPORT_DIO4 PIND
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#define WPORT_DIO4 PORTD
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#define DDR_DIO4 DDRD
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#define PIN_DIO5 PD5
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#define RPORT_DIO5 PIND
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#define WPORT_DIO5 PORTD
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#define DDR_DIO5 DDRD
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#define PIN_DIO6 PD6
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#define RPORT_DIO6 PIND
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#define WPORT_DIO6 PORTD
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#define DDR_DIO6 DDRD
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#define PIN_DIO7 PD7
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#define RPORT_DIO7 PIND
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#define WPORT_DIO7 PORTD
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#define DDR_DIO7 DDRD
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#define PIN_DIO8 PB0
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#define RPORT_DIO8 PINB
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#define WPORT_DIO8 PORTB
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#define DDR_DIO8 DDRB
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#define PIN_DIO9 PB1
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#define RPORT_DIO9 PINB
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#define WPORT_DIO9 PORTB
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#define DDR_DIO9 DDRB
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#define PIN_DIO10 PB2
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#define RPORT_DIO10 PINB
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#define WPORT_DIO10 PORTB
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#define DDR_DIO10 DDRB
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#define PIN_DIO11 PB3
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#define RPORT_DIO11 PINB
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#define WPORT_DIO11 PORTB
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#define DDR_DIO11 DDRB
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#define PIN_DIO12 PB4
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#define RPORT_DIO12 PINB
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#define WPORT_DIO12 PORTB
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#define DDR_DIO12 DDRB
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#define PIN_DIO13 PB5
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#define RPORT_DIO13 PINB
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#define WPORT_DIO13 PORTB
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#define DDR_DIO13 DDRB
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#define PIN_AIO0 PC0
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#define RPORT_AIO0 PINC
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#define WPORT_AIO0 PORTC
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#define DDR_AIO0 DDRC
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#define PIN_AIO1 PC1
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#define RPORT_AIO1 PINC
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#define WPORT_AIO1 PORTC
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#define DDR_AIO1 DDRC
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#define PIN_AIO2 PC2
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#define RPORT_AIO2 PINC
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#define WPORT_AIO2 PORTC
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#define DDR_AIO2 DDRC
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#define PIN_AIO3 PC3
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#define RPORT_AIO3 PINC
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#define WPORT_AIO3 PORTC
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#define DDR_AIO3 DDRC
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#define PIN_AIO4 PC4
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#define RPORT_AIO4 PINC
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#define WPORT_AIO4 PORTC
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#define DDR_AIO4 DDRC
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#define PIN_AIO5 PC5
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#define RPORT_AIO5 PINC
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#define WPORT_AIO5 PORTC
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#define DDR_AIO5 DDRC
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#endif /* _ARDUINO_H */
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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);
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DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
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DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
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/* output high nibble first */
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LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
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LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
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LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
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LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
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if(data & 0x80) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
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if(data & 0x40) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
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if(data & 0x20) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
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||||
if(data & 0x10) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
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lcd_e_toggle();
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||||
|
||||
/* output low nibble */
|
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LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
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||||
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
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||||
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
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LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
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if(data & 0x08) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
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if(data & 0x04) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
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||||
if(data & 0x02) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
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if(data & 0x01) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
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lcd_e_toggle();
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/* all data pins high (inactive) */
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LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
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LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||
LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||
LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
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}
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}
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#else
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#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 +1,49 @@
|
|||
#include <stddef.h>
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
|
||||
#include "serial.h"
|
||||
#include "lcd.h"
|
||||
|
||||
// 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 STDIN/OUT/ERR
|
||||
stdin = &serio;
|
||||
stdout = &serio;
|
||||
stderr = &serio;
|
||||
|
||||
// set up serial
|
||||
serial_init(19200);
|
||||
|
||||
sei();
|
||||
|
||||
for (;;)
|
||||
{
|
||||
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,56 @@
|
|||
#include <stddef.h>
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
|
||||
#include "serial.h"
|
||||
#include "lcd.h"
|
||||
|
||||
// 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 STDIN/OUT/ERR
|
||||
stdin = &serio;
|
||||
stdout = &lcdo;
|
||||
stderr = &lcdo;
|
||||
|
||||
// set up serial
|
||||
serial_init(19200);
|
||||
|
||||
sei();
|
||||
|
||||
lcd_gotoxy(0, 0);
|
||||
fprintf(&lcdo, "MyProject OK");
|
||||
|
||||
for (;;)
|
||||
{
|
||||
}
|
||||
}
|
||||
|
|
@ -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 +1,26 @@
|
|||
#ifndef _SERIAL_H
|
||||
#define _SERIAL_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <avr/io.h>
|
||||
|
||||
#include "ringbuffer.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 */
|
||||
Loading…
Reference in New Issue