pecanpico9/tracker/software/protocols/aprs/ax25.h

50 wiersze
1.7 KiB
C

/* trackuino copyright (C) 2010 EA5HAV Javi
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __AX25_H__
#define __AX25_H__
#include "ch.h"
#include "hal.h"
#include "si4464.h"
typedef struct {
char callsign[7];
unsigned char ssid;
} address_t;
typedef struct {
uint8_t ones_in_a_row; // Ones in a row (for bitstuffing)
uint8_t *data; // Data
uint16_t size; // Packet size in bits
uint16_t max_size; // Max. Packet size in bits (size of modem packet)
uint16_t crc; // CRC
mod_t mod; // Modulation type (MOD_AFSK or MOD_2GFSK)
} ax25_t;
void ax25_init(ax25_t *packet);
void ax25_send_header(ax25_t *packet, const char *callsign, uint8_t ssid, const char *path, uint16_t preamble);
void ax25_send_path(ax25_t *packet, const char *callsign, uint8_t ssid, bool last);
void ax25_send_byte(ax25_t *packet, char byte);
void ax25_send_string(ax25_t *packet, const char *string);
void ax25_send_footer(ax25_t *packet);
void scramble(ax25_t *packet);
void nrzi_encode(ax25_t *packet);
#endif