diff options
Diffstat (limited to 'src/freedv_data_raw_tx.c')
| -rw-r--r-- | src/freedv_data_raw_tx.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/src/freedv_data_raw_tx.c b/src/freedv_data_raw_tx.c index cb74107..7fa1e84 100644 --- a/src/freedv_data_raw_tx.c +++ b/src/freedv_data_raw_tx.c @@ -238,6 +238,8 @@ int main(int argc, char *argv[]) { mode = FREEDV_MODE_DATAC13; if (!strcmp(argv[dx], "DATAC14") || !strcmp(argv[dx], "datac14")) mode = FREEDV_MODE_DATAC14; + if (!strcmp(argv[dx], "CUSTOM") || !strcmp(argv[dx], "custom")) + mode = FREEDV_MODE_DATA_CUSTOM; if (mode == -1) { fprintf(stderr, "Error: in mode: %s", argv[dx]); exit(1); @@ -259,10 +261,33 @@ int main(int argc, char *argv[]) { exit(1); } - if (mode != FREEDV_MODE_FSK_LDPC) - freedv = freedv_open(mode); - else + if (mode == FREEDV_MODE_FSK_LDPC) + freedv = freedv_open_advanced(mode, &adv); + else if (mode == FREEDV_MODE_DATA_CUSTOM) { + // demonstrate custom OFDM raw data modes + struct OFDM_CONFIG ofdm_config; + ofdm_init_mode("datac14", &ofdm_config); + // modify datac14 to have 3 carriers instead of 4, which means + // we have to tweak Np, and the number of unique word bits + ofdm_config.nc = 3; + ofdm_config.np = 6; + ofdm_config.nuwbits = 48; + ofdm_config.bad_uw_errors = 18; + uint8_t uw[] = {1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, + 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0}; + memcpy(ofdm_config.tx_uw, uw, sizeof(uw)); + memcpy(&ofdm_config.tx_uw[ofdm_config.nuwbits - sizeof(uw)], uw, + sizeof(uw)); + /* set up a trivial Tx band pass filter as a demo */ + static float tx_bpf[] = {1.0, 1.0, 1.0}; + ofdm_config.tx_bpf_proto = tx_bpf; + ofdm_config.tx_bpf_proto_n = 3; + adv.config = (void *)&ofdm_config; freedv = freedv_open_advanced(mode, &adv); + freedv_ofdm_print_info(freedv); + } else { + freedv = freedv_open(mode); + } assert(freedv != NULL); |