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dmr hamming 7_4 decode

max
Max 2017-11-22 19:00:34 -05:00
parent d6f3be0604
commit ef586696a1
2 changed files with 17 additions and 3 deletions
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2
op25/gr-op25_repeater/lib/dmr_bs_tx_bb_impl.cc
View File

@ -186,8 +186,6 @@ static void generate_cach(uint8_t at, uint8_t tc, uint8_t lcss, const uint8_t ca
int tact = hamming_7_4[ (at << 3) | (tc << 2) | lcss ];
//printf ("tact %d %x\n", tact, tact);
//print_result("cach_payload_bits", cach_bits, 17);
static const uint8_t cach_tact_bits[] = {0, 4, 8, 12, 14, 18, 22};
static const uint8_t cach_payload_bits[] = {1,2,3,5,6,7,9,10,11,13,15,16,17,19,20,21,23};
for (int i=0; i<7; i++) {
result[cach_tact_bits[i]] = (tact >> (6-i)) & 1;
}

18
op25/gr-op25_repeater/lib/dmr_const.h
View File

@ -25,7 +25,18 @@ static const int hamming_7_4[] = {
0, 11, 22, 29, 39, 44, 49, 58,
69, 78, 83, 88, 98, 105, 116, 127,
};
static const int hamming_7_4_decode[] = {
0, 0, 0, 1, 0, 8, 2, 4, 0, 1, 1, 1, 5, 3, 9, 1,
0, 6, 2, 10, 2, 3, 2, 2, 11, 3, 7, 1, 3, 3, 2, 3,
0, 6, 12, 4, 5, 4, 4, 4, 5, 13, 7, 1, 5, 5, 5, 4,
6, 6, 7, 6, 14, 6, 2, 4, 7, 6, 7, 7, 5, 3, 7, 15,
0, 8, 12, 10, 8, 8, 9, 8, 11, 13, 9, 1, 9, 8, 9, 9,
11, 10, 10, 10, 14, 8, 2, 10, 11, 11, 11, 10, 11, 3, 9, 15,
12, 13, 12, 12, 14, 8, 12, 4, 13, 13, 12, 13, 5, 13, 9, 15,
14, 6, 12, 10, 14, 14, 14, 15, 11, 13, 7, 15, 14, 15, 15, 15
};
static const int hamming_17_12[] = {
0, 37, 74, 111, 148, 177, 222, 251,
269, 296, 327, 354, 409, 444, 467, 502,
@ -822,9 +833,14 @@ static const int hamming_16_11[] = {
static const uint8_t dmr_bs_voice_sync[24] = {
1,3,1,1,1,1,3,3,3,1,1,3,3,1,3,3,1,3,1,1,3,3,1,3
};
static const uint64_t DMR_VOICE_SYNC_MAGIC = 0x755fd7df75f7LL;
static const uint64_t DMR_IDLE_SYNC_MAGIC = 0xdff57d75df5dLL;
static const uint8_t dmr_bs_idle_sync[24] = {
3,1,3,3,3,3,1,1,1,3,3,1,1,3,1,1,3,1,3,3,1,1,3,1
};
static const uint8_t cach_tact_bits[] = {0, 4, 8, 12, 14, 18, 22};
static const uint8_t cach_payload_bits[] = {1,2,3,5,6,7,9,10,11,13,15,16,17,19,20,21,23};
#endif /* INCLUDED_OP25_REPEATER_DMR_CONST_H */