mirror of
https://github.com/dj0abr/SSB_HighSpeed_Modem.git
synced 2024-11-26 06:08:49 -05:00
92 lines
4.3 KiB
C
92 lines
4.3 KiB
C
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/*
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* High Speed modem to transfer data in a 2,7kHz SSB channel
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* =========================================================
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* Author: DJ0ABR
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*
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* (c) DJ0ABR
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* www.dj0abr.de
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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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*/
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#include "qo100modem.h"
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uint8_t scr[400] = {
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130 , 239 , 223 , 19 , 146 , 254 , 12 , 86 , 106 , 68 ,
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77 , 213 , 243 , 216 , 102 , 227 , 108 , 113 , 229 , 89 ,
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26 , 64 , 138 , 216 , 225 , 121 , 194 , 137 , 152 , 64 ,
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51 , 175 , 68 , 200 , 37 , 104 , 247 , 68 , 193 , 50 ,
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19 , 14 , 196 , 81 , 4 , 236 , 191 , 249 , 83 , 25 ,
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161 , 171 , 167 , 29 , 33 , 139 , 7 , 152 , 230 , 144 ,
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125 , 206 , 34 , 236 , 112 , 78 , 219 , 34 , 181 , 161 ,
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7 , 45 , 198 , 235 , 62 , 115 , 194 , 100 , 209 , 95 ,
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186 , 161 , 53 , 10 , 110 , 246 , 122 , 246 , 207 , 194 ,
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178 , 63 , 232 , 93 , 158 , 234 , 231 , 73 , 214 , 64,
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130 , 239 , 223 , 19 , 146 , 254 , 12 , 86 , 106 , 68 ,
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77 , 213 , 243 , 216 , 102 , 227 , 108 , 113 , 229 , 89 ,
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26 , 64 , 138 , 216 , 225 , 121 , 194 , 137 , 152 , 64 ,
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51 , 175 , 68 , 200 , 37 , 104 , 247 , 68 , 193 , 50 ,
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19 , 14 , 196 , 81 , 4 , 236 , 191 , 249 , 83 , 25 ,
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161 , 171 , 167 , 29 , 33 , 139 , 7 , 152 , 230 , 144 ,
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125 , 206 , 34 , 236 , 112 , 78 , 219 , 34 , 181 , 161 ,
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7 , 45 , 198 , 235 , 62 , 115 , 194 , 100 , 209 , 95 ,
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186 , 161 , 53 , 10 , 110 , 246 , 122 , 246 , 207 , 194 ,
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178 , 63 , 232 , 93 , 158 , 234 , 231 , 73 , 214 , 64,
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130 , 239 , 223 , 19 , 146 , 254 , 12 , 86 , 106 , 68 ,
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77 , 213 , 243 , 216 , 102 , 227 , 108 , 113 , 229 , 89 ,
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26 , 64 , 138 , 216 , 225 , 121 , 194 , 137 , 152 , 64 ,
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51 , 175 , 68 , 200 , 37 , 104 , 247 , 68 , 193 , 50 ,
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19 , 14 , 196 , 81 , 4 , 236 , 191 , 249 , 83 , 25 ,
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161 , 171 , 167 , 29 , 33 , 139 , 7 , 152 , 230 , 144 ,
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125 , 206 , 34 , 236 , 112 , 78 , 219 , 34 , 181 , 161 ,
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7 , 45 , 198 , 235 , 62 , 115 , 194 , 100 , 209 , 95 ,
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186 , 161 , 53 , 10 , 110 , 246 , 122 , 246 , 207 , 194 ,
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178 , 63 , 232 , 93 , 158 , 234 , 231 , 73 , 214 , 64,
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130 , 239 , 223 , 19 , 146 , 254 , 12 , 86 , 106 , 68 ,
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77 , 213 , 243 , 216 , 102 , 227 , 108 , 113 , 229 , 89 ,
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26 , 64 , 138 , 216 , 225 , 121 , 194 , 137 , 152 , 64 ,
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51 , 175 , 68 , 200 , 37 , 104 , 247 , 68 , 193 , 50 ,
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19 , 14 , 196 , 81 , 4 , 236 , 191 , 249 , 83 , 25 ,
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161 , 171 , 167 , 29 , 33 , 139 , 7 , 152 , 230 , 144 ,
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125 , 206 , 34 , 236 , 112 , 78 , 219 , 34 , 181 , 161 ,
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7 , 45 , 198 , 235 , 62 , 115 , 194 , 100 , 209 , 95 ,
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186 , 161 , 53 , 10 , 110 , 246 , 122 , 246 , 207 , 194 ,
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178 , 63 , 232 , 93 , 158 , 234 , 231 , 73 , 214 , 64
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};
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uint8_t rx_scrbuf[400];
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void TX_Scramble(uint8_t *data, int len)
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{
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if (len > 400) return;
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for(int i=0; i<len; i++)
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data[i] ^= scr[i];
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}
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uint8_t *RX_Scramble(uint8_t *data, int len)
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{
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if (len > 400) return data;
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memcpy(rx_scrbuf,data,len);
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for(int i=0; i<len; i++)
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rx_scrbuf[i] ^= scr[i];
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return rx_scrbuf;
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}
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