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Code Issues Activity

add option to disable phase mod

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This commit is contained in:
KubaPro010
2025-03-09 16:54:40 +01:00
parent 0bc82fe766
commit cfec71c649
1 changed files with 14 additions and 4 deletions
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18
src/dcf95.c
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@@ -269,6 +269,7 @@ void show_help(char *name) {
" -v,--volume Output volume [default: %.2f]\n" " -v,--volume Output volume [default: %.2f]\n"
" -t,--offset Time Offset [default: %d s]\n" " -t,--offset Time Offset [default: %d s]\n"
" -T,--test Enable test mode \n" " -T,--test Enable test mode \n"
" -n,--no-phase Disable phase modulation \n"
,name ,name
,OUTPUT_DEVICE ,OUTPUT_DEVICE
,FREQ ,FREQ
@@ -288,10 +289,11 @@ int main(int argc, char **argv) {
int sample_rate = SAMPLE_RATE; int sample_rate = SAMPLE_RATE;
int offset = OFFSET; int offset = OFFSET;
int test_mode = 0; // Test mode flag int test_mode = 0; // Test mode flag
int no_phase = 0; // Phase modulation disabled flag
// #region Parse Arguments // #region Parse Arguments
int opt; int opt;
const char *short_opt = "o:F:s:v:t:Th"; const char *short_opt = "o:F:s:v:t:Tnh";
struct option long_opt[] = struct option long_opt[] =
{ {
{"output", required_argument, NULL, 'o'}, {"output", required_argument, NULL, 'o'},
@@ -300,6 +302,7 @@ int main(int argc, char **argv) {
{"volume", required_argument, NULL, 'v'}, {"volume", required_argument, NULL, 'v'},
{"offset", required_argument, NULL, 't'}, {"offset", required_argument, NULL, 't'},
{"test", no_argument, NULL, 'T'}, {"test", no_argument, NULL, 'T'},
{"no-phase", no_argument, NULL, 'n'},
{"help", no_argument, NULL, 'h'}, {"help", no_argument, NULL, 'h'},
{0, 0, 0, 0} {0, 0, 0, 0}
@@ -326,6 +329,9 @@ int main(int argc, char **argv) {
case 'T': // Test mode case 'T': // Test mode
test_mode = 1; test_mode = 1;
break; break;
case 'n': // Disable phase modulation
no_phase = 1;
break;
case 'h': case 'h':
show_help(argv[0]); show_help(argv[0]);
return 0; return 0;
@@ -346,7 +352,11 @@ int main(int argc, char **argv) {
printf(" Sample rate: %d Hz\n", sample_rate); printf(" Sample rate: %d Hz\n", sample_rate);
printf(" Volume: %.2f\n", master_volume); printf(" Volume: %.2f\n", master_volume);
printf(" Time offset: %d seconds\n", offset); printf(" Time offset: %d seconds\n", offset);
printf(" Phase modulation: +/- %.1f degrees\n", PHASE_SHIFT); if (no_phase) {
printf(" Phase modulation: Disabled\n");
} else {
printf(" Phase modulation: +/- %.1f degrees\n", PHASE_SHIFT);
}
// #region Setup devices // #region Setup devices
pa_sample_spec mono_format = { pa_sample_spec mono_format = {
@@ -494,8 +504,8 @@ int main(int argc, char **argv) {
// Base carrier signal (will be phase-shifted if in DSSS period) // Base carrier signal (will be phase-shifted if in DSSS period)
float phase_offset = 0.0; float phase_offset = 0.0;
// Apply DSSS if in the appropriate time window // Apply DSSS if in the appropriate time window and phase modulation is enabled
if (in_dsss_period && transmitting) { if (in_dsss_period && transmitting && !no_phase) {
// Generate a chip every CHIP_CYCLES carrier cycles // Generate a chip every CHIP_CYCLES carrier cycles
if (current_cycle_count == 0) { if (current_cycle_count == 0) {
if (current_chip_count < CHIPS_PER_BIT) { if (current_chip_count < CHIPS_PER_BIT) {