diff options
Diffstat (limited to 'src/DabMod.cpp')
| -rw-r--r-- | src/DabMod.cpp | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/DabMod.cpp b/src/DabMod.cpp index f9bc3c9..24dfe4f 100644 --- a/src/DabMod.cpp +++ b/src/DabMod.cpp @@ -95,8 +95,11 @@ void printUsage(char* progName, FILE* out = stderr) fprintf(out, "-F frequency: Set the transmit frequency when using UHD output. (mandatory option when using UHD)\n"); fprintf(out, "-G txgain: Set the transmit gain for the UHD driver (default: 0)\n"); fprintf(out, "-o: (UHD only) Set the timestamp offset added to the timestamp in the ETI. The offset is a double.\n"); - fprintf(out, "-O: (UHD only) Set the file containing the timestamp offset added to the timestamp in the ETI. The file is read every six seconds, and must contain a double value.\n"); - fprintf(out, " Specifying either -o or -O make DABMOD mute frames that do not contain a valid timestamp.\n"); + fprintf(out, "-O: (UHD only) Set the file containing the timestamp offset added to the timestamp in the ETI.\n" + "The file is read every six seconds, and must contain a double value.\n"); + fprintf(out, " Specifying either -o or -O has two implications: It enables synchronous transmission,\n" + " requiring an external REFCLK and PPS signal and frames that do not contain a valid timestamp\n" + " get muted.\n\n"); fprintf(out, "-T taps_file: Enable filtering before the output, using the specified file containing the filter taps.\n"); fprintf(out, "-a gain: Apply digital amplitude gain.\n"); fprintf(out, "-c rate: Set the DAC clock rate and enable Cic Equalisation.\n"); @@ -147,6 +150,7 @@ int main(int argc, char* argv[]) double uhdFrequency = 0.0; int uhdTxGain = 0; bool uhd_mute_no_timestamps = false; + bool uhd_enable_sync = false; FILE* inputFile = NULL; uint32_t sync = 0; @@ -218,6 +222,7 @@ int main(int argc, char* argv[]) } modconf.use_offset_fixed = true; modconf.offset_fixed = strtod(optarg, NULL); + uhd_enable_sync = true; break; case 'O': if (modconf.use_offset_fixed) @@ -227,6 +232,7 @@ int main(int argc, char* argv[]) } modconf.use_offset_file = true; modconf.offset_filename = optarg; + uhd_enable_sync = true; break; case 'm': dabMode = strtol(optarg, NULL, 0); @@ -333,7 +339,7 @@ int main(int argc, char* argv[]) else if (useUHDOutput) { fprintf(stderr, "Using UHD output\n"); amplitude /= 32000.0f; - output = new OutputUHD(outputDevice, outputRate, uhdFrequency, uhdTxGain, uhd_mute_no_timestamps); + output = new OutputUHD(outputDevice, outputRate, uhdFrequency, uhdTxGain, uhd_enable_sync, uhd_mute_no_timestamps); } flowgraph = new Flowgraph(); |