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694b83123a
In to NXDN possible problem on sinc filter anc isinc filter, think they must be recalculated but do not know how to do it. On D-STAR, DMR, C4FM and P25 it work.
51 lines
2 KiB
C
51 lines
2 KiB
C
/*
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* Copyright (C) 2016,2017,2018 by Jonathan Naylor G4KLX
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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 2 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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if !defined(NXDNDEFINES_H)
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#define NXDNDEFINES_H
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const unsigned int NXDN_RADIO_SYMBOL_LENGTH = 20U; // At 48 kHz sample rate
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const unsigned int NXDN_FRAME_LENGTH_BITS = 384U;
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const unsigned int NXDN_FRAME_LENGTH_BYTES = NXDN_FRAME_LENGTH_BITS / 8U;
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const unsigned int NXDN_FRAME_LENGTH_SYMBOLS = NXDN_FRAME_LENGTH_BITS / 2U;
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const unsigned int NXDN_FRAME_LENGTH_SAMPLES = NXDN_FRAME_LENGTH_SYMBOLS * NXDN_RADIO_SYMBOL_LENGTH;
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const unsigned int NXDN_FSW_LENGTH_BITS = 20U;
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const unsigned int NXDN_FSW_LENGTH_SYMBOLS = NXDN_FSW_LENGTH_BITS / 2U;
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const unsigned int NXDN_FSW_LENGTH_SAMPLES = NXDN_FSW_LENGTH_SYMBOLS * NXDN_RADIO_SYMBOL_LENGTH;
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const uint8_t NXDN_FSW_BYTES[] = {0xCDU, 0xF5U, 0x90U};
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const uint8_t NXDN_FSW_BYTES_MASK[] = {0xFFU, 0xFFU, 0xF0U};
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const uint8_t NXDN_FSW_BYTES_LENGTH = 3U;
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const uint32_t NXDN_FSW_BITS = 0x000CDF59U;
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const uint32_t NXDN_FSW_BITS_MASK = 0x000FFFFFU;
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// C D F 5 9
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// 11 00 11 01 11 11 01 01 10 01
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// -3 +1 -3 +3 -3 -3 +3 +3 -1 +3
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const int8_t NXDN_FSW_SYMBOLS_VALUES[] = {-3, +1, -3, +3, -3, -3, +3, +3, -1, +3};
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const uint16_t NXDN_FSW_SYMBOLS = 0x014DU;
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const uint16_t NXDN_FSW_SYMBOLS_MASK = 0x03FFU;
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#endif
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