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63 lines
2.0 KiB
63 lines
2.0 KiB
/*
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* A sample application transmitting AFSK at 1200 baud
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*
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* Portions Copyright (C) 2018 Libre Space Foundation
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* Portions Copyright (C) 2018 Jonathan Brandenburg
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef AX25_H_
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#define AX25_H_
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#include <stdint.h>
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#include "ax5043.h"
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#define AX25_MAX_ADDR_LEN 28
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#define AX25_MAX_FRAME_LEN 256
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#define AX25_MIN_ADDR_LEN 14
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#define AX25_SYNC_FLAG 0x7E
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#define AX25_MIN_CTRL_LEN 1
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#define AX25_MAX_CTRL_LEN 2
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#define AX25_CALLSIGN_MAX_LEN 6
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#define AX25_CALLSIGN_MIN_LEN 2
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#define AX25_PREAMBLE_LEN 16
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#define AX25_POSTAMBLE_LEN 16
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/**
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* AX.25 Frame types
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*/
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typedef enum {
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AX25_I_FRAME, //!< AX25_I_FRAME Information frame
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AX25_S_FRAME, //!< AX25_S_FRAME Supervisory frame
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AX25_U_FRAME, //!< AX25_U_FRAME Unnumbered frame
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AX25_UI_FRAME /**!< AX25_UI_FRAME Unnumbered information frame */
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} ax25_frame_type_t;
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typedef struct {
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uint8_t preamble_len;
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uint8_t postable_len;
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uint8_t addr_field[AX25_MAX_ADDR_LEN];
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uint32_t addr_field_len;
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} ax25_conf_t;
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int
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ax25_init(ax25_conf_t *conf, const uint8_t *dest_addr, uint8_t dest_ssid,
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const uint8_t *src_addr, uint8_t src_ssid, uint8_t preamble_len,
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uint8_t postamble_len);
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int ax25_tx_frame(ax25_conf_t *hax25, ax5043_conf_t *hax,
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const uint8_t *payload, uint32_t len);
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#endif /* AX25_H_ */
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