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Arduhdlc.h
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Arduhdlc.h
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#ifndef arduhdlc_h
#define arduhdlc_h
#include "Arduino.h"
#include <stdint.h>
#include <stdbool.h>
#include <util/crc16.h>
typedef void (* sendchar_type) (uint8_t);
typedef void (* frame_handler_type)(const uint8_t *framebuffer, uint16_t framelength);
class Arduhdlc
{
public:
Arduhdlc (sendchar_type, frame_handler_type, uint16_t max_frame_length);
void charReceiver(uint8_t data);
void frameDecode(const char *framebuffer, uint8_t frame_length);
private:
/* User must define a function, that sends a 8bit char over the chosen interface, usart, spi, i2c etc. */
sendchar_type sendchar_function;
/* User must define a function, that will process the valid received frame */
/* This function can act like a command router/dispatcher */
frame_handler_type frame_handler;
void sendchar(uint8_t data);
bool escape_character;
uint8_t * receive_frame_buffer;
uint8_t frame_position;
// 16bit CRC sum for _crc_ccitt_update
uint16_t frame_checksum;
uint16_t max_frame_length;
};
#endif