shithub: m8c

ref: f38b138e873f5217565ecfde23516a68e3211079
dir: /slip.h/

#ifndef SLIP_H_
#define SLIP_H_

#include "command.h"
#include <stdint.h>

#define SLIP_SPECIAL_BYTE_END           0xC0
#define SLIP_SPECIAL_BYTE_ESC           0xDB

#define SLIP_ESCAPED_BYTE_END           0xDC
#define SLIP_ESCAPED_BYTE_ESC           0xDD

typedef enum {
        SLIP_STATE_NORMAL = 0x00,
        SLIP_STATE_ESCAPED
} slip_state_t;

typedef struct {
        uint8_t *buf;
        uint32_t buf_size;
        //struct command_queues *command_queues;
        void (*recv_message)(uint8_t *data, uint32_t size);
} slip_descriptor_s;

typedef struct {
        slip_state_t state;
        uint32_t size;
        uint16_t crc;
        const slip_descriptor_s *descriptor;
} slip_handler_s;

typedef enum {
        SLIP_NO_ERROR = 0x00,
        SLIP_ERROR_BUFFER_OVERFLOW,
        SLIP_ERROR_UNKNOWN_ESCAPED_BYTE,
} slip_error_t;

slip_error_t slip_init(slip_handler_s *slip, const slip_descriptor_s *descriptor);
slip_error_t slip_read_byte(slip_handler_s *slip, uint8_t byte);

#endif