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40 lines
849 B
40 lines
849 B
10 months ago
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#ifndef PROTOCOL_AX25_H
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#define PROTOCOL_AX25_H
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#include <stdio.h>
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#include <stdbool.h>
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#include "device.h"
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#define AX25_MIN_FRAME_LEN 18
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#ifndef CUSTOM_FRAME_SIZE
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#define AX25_MAX_FRAME_LEN 620
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#else
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#define AX25_MAX_FRAME_LEN CUSTOM_FRAME_SIZE
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#endif
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#define AX25_CRC_CORRECT 0xF0B8
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#define AX25_CTRL_UI 0x03
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#define AX25_PID_NOLAYER3 0xF0
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struct AX25Ctx; // Forward declarations
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struct AX25Msg;
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typedef void (*ax25_callback_t)(struct AX25Ctx *ctx);
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typedef struct AX25Ctx {
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uint8_t buf[AX25_MAX_FRAME_LEN];
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FILE *ch;
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size_t frame_len;
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uint16_t crc_in;
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uint16_t crc_out;
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ax25_callback_t hook;
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bool sync;
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bool escape;
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} AX25Ctx;
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void ax25_poll(AX25Ctx *ctx);
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void ax25_sendRaw(AX25Ctx *ctx, void *_buf, size_t len);
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void ax25_init(AX25Ctx *ctx, FILE *channel, ax25_callback_t hook);
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#endif
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