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First version of the AX25 TX functionality.

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This commit is contained in:
Jonathan Naylor 2020-06-24 11:14:02 +01:00
parent 7ad70d04a4
commit 3de10fe98b
6 changed files with 215 additions and 7 deletions
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36
AX25Defines.h Normal file
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/*
* Copyright (C) 2020 by Jonathan Naylor G4KLX
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined(AX25DEFINES_H)
#define AX25DEFINES_H
const uint8_t AX25_RADIO_SYMBOL_LENGTH = 20U; // At 24 kHz sample rate
const uint8_t AX25_FRAME_START = 0x7EU;
const uint8_t AX25_FRAME_END = 0x7EU;
const uint8_t AX25_FRAME_ABORT = 0xFEU;
const uint8_t AX25_MAX_ONES = 5U;
const uint16_t AX25_MIN_FRAME_LENGTH = 17U; // Callsign (7) + Callsign (7) + Control (1) + Checksum (2)
const uint16_t AX25_MAX_FRAME_LENGTH = 294U; // Callsign (7) + Callsign (7) + 3 Digipeaters (21) +
// Control (1) + Data (256) + Checksum (2)
#endif