81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#ifndef _INTERCOM_H
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#define _INTERCOM_H
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#include <stdint.h>
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#include "config.h"
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#ifdef HOST
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#define enable_transmit() do { WRITE(TX_ENABLE_PIN,1); UCSR1B &=~MASK(RXEN1); } while(0)
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#define disable_transmit() do { WRITE(TX_ENABLE_PIN,0); UCSR1B &= ~(MASK(TXCIE1) | MASK(UDRIE1)); UCSR1B |= MASK(RXEN1); } while(0)
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#else
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#define enable_transmit() do { WRITE(TX_ENABLE_PIN,1); UCSR0B &= ~MASK(RXEN0); } while(0)
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#define disable_transmit() do { WRITE(TX_ENABLE_PIN,0); UCSR0B &= ~(MASK(TXCIE0) | MASK(UDRIE0)); UCSR0B |= MASK(RXEN0); } while(0)
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#endif
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enum {
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ERROR_BAD_CRC
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} err_codes;
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typedef struct {
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uint8_t start;
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uint8_t dio;
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uint8_t controller_num;
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uint8_t control_word;
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uint8_t control_index;
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union {
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int32_t control_data_int32;
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uint32_t control_data_uint32;
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float control_data_float;
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uint16_t temp[2];
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};
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uint8_t err;
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uint8_t crc;
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} intercom_packet_t;
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typedef union {
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intercom_packet_t packet;
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uint8_t data[sizeof(intercom_packet_t)];
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} intercom_packet;
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extern intercom_packet tx;
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extern intercom_packet rx;
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// initialise serial subsystem
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void intercom_init(void);
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// if host, send target temperature to extruder
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// if extruder, send actual temperature to host
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void send_temperature(uint8_t index, uint16_t temperature);
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// if host, read actual temperature from extruder
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// if extruder, read target temperature from host
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uint16_t read_temperature(uint8_t index);
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// if host, set DIOs on extruder controller
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// if extruder, report DIO state
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void set_dio(uint8_t index, uint8_t value);
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// if host, read extruder DIO inputs
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// if extruder, set DIO outputs
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uint8_t get_dio(uint8_t index);
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// set error code to send to other end
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void set_err(uint8_t err);
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// get error code sent from other end
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uint8_t get_err(void);
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// if host, send packet to extruder
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// if extruder, return packet to host
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void start_send(void);
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#define FLAG_RX_IN_PROGRESS 1
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#define FLAG_TX_IN_PROGRESS 2
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#define FLAG_NEW_RX 4
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#define FLAG_TX_FINISHED 8
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extern volatile uint8_t intercom_flags;
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#endif /* _INTERCOM_H */
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