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M17Defines.h
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M17Defines.h
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/*
* Copyright (C) 2016,2017,2018,2020,2021 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(M17DEFINES_H)
#define M17DEFINES_H
const unsigned int M17_RADIO_SYMBOL_LENGTH = 5U; // At 24 kHz sample rate
const unsigned int M17_FRAME_LENGTH_BITS = 384U;
const unsigned int M17_FRAME_LENGTH_BYTES = M17_FRAME_LENGTH_BITS / 8U;
const unsigned int M17_FRAME_LENGTH_SYMBOLS = M17_FRAME_LENGTH_BITS / 2U;
const unsigned int M17_FRAME_LENGTH_SAMPLES = M17_FRAME_LENGTH_SYMBOLS * M17_RADIO_SYMBOL_LENGTH;
const unsigned int M17_SYNC_LENGTH_BITS = 16U;
const unsigned int M17_SYNC_LENGTH_BYTES = M17_SYNC_LENGTH_BITS / 8U;
const unsigned int M17_SYNC_LENGTH_SYMBOLS = M17_SYNC_LENGTH_BITS / 2U;
const unsigned int M17_SYNC_LENGTH_SAMPLES = M17_SYNC_LENGTH_SYMBOLS * M17_RADIO_SYMBOL_LENGTH;
const uint8_t M17_LINK_SETUP_SYNC_BYTES[] = {0x55U, 0xF7U};
const uint8_t M17_STREAM_SYNC_BYTES[] = {0xFFU, 0x5DU};
const uint8_t M17_EOF_SYNC_BYTES[] = {0x55U, 0x5DU};
const uint16_t M17_LINK_SETUP_SYNC_BITS = 0x55F7U;
const uint16_t M17_STREAM_SYNC_BITS = 0xFF5DU;
const uint16_t M17_EOF_SYNC_BITS = 0x555DU;
// 5 5 F 7
// 01 01 01 01 11 11 01 11
// +3 +3 +3 +3 -3 -3 +3 -3
const int8_t M17_LINK_SETUP_SYNC_SYMBOLS_VALUES[] = {+3, +3, +3, +3, -3, -3, +3, -3};
const uint8_t M17_LINK_SETUP_SYNC_SYMBOLS = 0xF2U;
// F F 5 D
// 11 11 11 11 01 01 11 01
// -3 -3 -3 -3 +3 +3 -3 +3
const int8_t M17_STREAM_SYNC_SYMBOLS_VALUES[] = {-3, -3, -3, -3, +3, +3, -3, +3};
const uint8_t M17_STREAM_SYNC_SYMBOLS = 0x0DU;
// 5 5 5 D
// 01 01 01 01 01 01 11 01
// +3 +3 +3 +3 +3 +3 -3 +3
const int8_t M17_EOF_SYNC_SYMBOLS_VALUES[] = {+3, +3, +3, +3, +3, +3, -3, +3};
const uint8_t M17_EOF_SYNC_SYMBOLS = 0xFDU;
#endif