rpitx/ft8_lib
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gen_ft8.cpp: add FREQUENCY option

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Allow generation of FT8 files at other frequencies than 1000Hz.
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David Forrest 2019-11-08 21:01:01 -05:00 committed by GitHub
parent ff7247943c
commit 3a55d358f0
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1 changed files with 6 additions and 2 deletions
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gen_ft8.cpp
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@ -40,7 +40,7 @@ void usage() {
printf("Generate a 15-second WAV file encoding a given message.\n");
printf("Usage:\n");
printf("\n");
printf("gen_ft8 MESSAGE WAV_FILE\n");
printf("gen_ft8 MESSAGE WAV_FILE [FREQUENCY]\n");
printf("\n");
printf("(Note that you might have to enclose your message in quote marks if it contains spaces)\n");
}
@ -55,6 +55,10 @@ int main(int argc, char **argv) {
const char *message = argv[1];
const char *wav_path = argv[2];
int frequency = 1000;
if (argc > 3) {
frequency = atoi(argv[3]);
}
// First, pack the text data into binary message
uint8_t packed[ft8::K_BYTES];
@ -93,7 +97,7 @@ int main(int argc, char **argv) {
signal[i] = 0;
}
synth_fsk(tones, ft8::NN, 1000, symbol_rate, symbol_rate, sample_rate, signal + num_silence);
synth_fsk(tones, ft8::NN, frequency, symbol_rate, symbol_rate, sample_rate, signal + num_silence);
save_wav(signal, num_silence + num_samples + num_silence, sample_rate, wav_path);
return 0;