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GeezerVison is showing github.com — MMDVM/CalDStarTX.cpp at master · g4klx/MMDVM Expand file tree/ Copy pathCalDStarTX.cppMore file actions 188 lines (168 loc) · 8.35 KB / Copy pathCalDStarTX.cppFile metadata and controls188 lines (168 loc) · 8.35 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 /* * Copyright (C) 2009-2016,2020 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. */ #include "Config.h" #if defined(MODE_DSTAR) #include "Globals.h" #include "CalDStarTX.h" const uint8_t HEADER[] = {0x00U, 0x00U, 0x00U, 'D', 'I', 'R', 'E', 'C', 'T', ' ', ' ', 'D', 'I', 'R', 'E', 'C', 'T', ' ', ' ', 'C', 'Q', 'C', 'Q', 'C', 'Q', ' ', ' ', 'M', 'M', 'D', 'V', 'M', ' ', ' ', ' ', 'T', 'E', 'S', 'T', 0xA9U, 0x6AU}; const uint8_t SLOW_DATA_TEXT[] = {'M', 'M', 'D', 'V', 'M', ' ', 'M', 'o', 'd', 'e', 'm', ' ', 'T', 'e', 's', 't', ' ', ' ', ' ', ' '}; CCalDStarTX::CCalDStarTX() : m_transmit(false), m_count(0U) { } void CCalDStarTX::process() { dstarTX.process(); if (!m_transmit) return; uint16_t space = dstarTX.getSpace(); if (space < 5U) return; uint8_t buffer[DSTAR_DATA_LENGTH_BYTES]; for (uint8_t i = 0U; i < DSTAR_DATA_LENGTH_BYTES; i++) buffer[i] = DSTAR_DATA_SYNC_BYTES[i]; if ((m_count % 21U) == 0U) { // Sync is already included } else if (m_count == 1U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_TEXT | 0U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[0U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[1U]; } else if (m_count == 2U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ SLOW_DATA_TEXT[2U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[3U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[4U]; } else if (m_count == 3U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_TEXT | 1U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[5U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[6U]; } else if (m_count == 4U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ SLOW_DATA_TEXT[7U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[8U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[9U]; } else if (m_count == 5U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_TEXT | 2U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[10U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[11U]; } else if (m_count == 6U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ SLOW_DATA_TEXT[12U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[13U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[14U]; } else if (m_count == 7U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_TEXT | 3U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[15U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[16U]; } else if (m_count == 8U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ SLOW_DATA_TEXT[17U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ SLOW_DATA_TEXT[18U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ SLOW_DATA_TEXT[19U]; } else if (m_count != 1U && (m_count % 21U) == 1U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[0U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[1U]; } else if (m_count != 2U && (m_count % 21U) == 2U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[2U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[3U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[4U]; } else if (m_count != 3U && (m_count % 21U) == 3U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[5U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[6U]; } else if (m_count != 4U && (m_count % 21U) == 4U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[7U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[8U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[9U]; } else if (m_count != 5U && (m_count % 21U) == 5U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[10U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[11U]; } else if (m_count != 6U && (m_count % 21U) == 6U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[12U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[13U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[14U]; } else if (m_count != 7U && (m_count % 21U) == 7U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[15U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[16U]; } else if (m_count != 8U && (m_count % 21U) == 8U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[17U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[18U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[19U]; } else if (m_count != 9U && (m_count % 21U) == 9U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[20U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[21U]; } else if (m_count != 10U && (m_count % 21U) == 10U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[22U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[23U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[24U]; } else if (m_count != 11U && (m_count % 21U) == 11U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[25U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[26U]; } else if (m_count != 12U && (m_count % 21U) == 12U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[27U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[28U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[29U]; } else if (m_count != 13U && (m_count % 21U) == 13U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[30U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[31U]; } else if (m_count != 14U && (m_count % 21U) == 14U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[32U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[33U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[34U]; } else if (m_count != 15U && (m_count % 21U) == 15U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 5U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[35U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[36U]; } else if (m_count != 16U && (m_count % 21U) == 16U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ HEADER[37U]; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[38U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ HEADER[39U]; } else if (m_count != 17U && (m_count % 21U) == 17U) { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ (DSTAR_SLOW_DATA_TYPE_HEADER | 1U); buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ HEADER[40U]; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ 'f'; } else { buffer[9U] = DSTAR_SCRAMBLER_BYTES[0U] ^ 'f'; buffer[10U] = DSTAR_SCRAMBLER_BYTES[1U] ^ 'f'; buffer[11U] = DSTAR_SCRAMBLER_BYTES[2U] ^ 'f'; } dstarTX.writeData(buffer, DSTAR_DATA_LENGTH_BYTES); m_count = (m_count + 1U) % (30U * 21U); } uint8_t CCalDStarTX::write(const uint8_t* data, uint16_t length) { if (length != 1U) return 4U; bool transmit = data[0U] == 1U; if (transmit && !m_transmit) { m_count = 0U; dstarTX.writeHeader(HEADER, DSTAR_HEADER_LENGTH_BYTES); } else if (!transmit && m_transmit) { dstarTX.writeEOT(); } m_transmit = transmit; return 0U; } #endif |
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