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pirip
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added -c option to generate just carrier

master
David Rowe 2020-08-10 04:43:14 +01:00
parent 66783cc5cd
commit 9980d96d1f
1 changed files with 19 additions and 8 deletions
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27
tx/fsk_rpitx.cpp
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@ -5,9 +5,7 @@
FSK modulates a one bit per char input bit stream using rpitx. FSK modulates a one bit per char input bit stream using rpitx.
TODO: TODO:
[X] works with previous tx-rx test [ ] -t -c run without an argument
[ ] no input file needed for test mode
[ ] create our own repo/clones librpitx/cmake/README.md
*/ */
#include <stdio.h> #include <stdio.h>
@ -39,6 +37,7 @@ int main(int argc, char **argv)
} }
FILE *fin; FILE *fin;
int carrier_test = 0;
int one_zero_test = 0; int one_zero_test = 0;
float frequency = 144.5e6; float frequency = 144.5e6;
int SymbolRate = 10000; int SymbolRate = 10000;
@ -47,11 +46,14 @@ int main(int argc, char **argv)
float shiftHz = -1; float shiftHz = -1;
ngfmdmasync *fmmod; ngfmdmasync *fmmod;
char usage[] = "usage: %s [-m fskM 2|4] [-f carrierFreqHz] [-r symbRateHz] [-s shiftHz] [-t] InputOneBitPerCharFile\n"; char usage[] = "usage: %s [-m fskM 2|4] [-f carrierFreqHz] [-r symbRateHz] [-s shiftHz] [-t] [-c] InputOneBitPerCharFile\n";
int opt; int opt;
while ((opt = getopt(argc, argv, "m:f:r:t")) != -1) { while ((opt = getopt(argc, argv, "m:f:r:tc")) != -1) {
switch (opt) { switch (opt) {
case 'c':
carrier_test = 1;
break;
case 'm': case 'm':
m = atoi(optarg); m = atoi(optarg);
break; break;
@ -97,8 +99,8 @@ int main(int argc, char **argv)
fprintf(stderr, "Frequency: %4.1f MHz Rs: %4.1f kHz Shift: %4.1f kHz M: %d \n", frequency/1E6, SymbolRate/1E3, shiftHz/1E3, m); fprintf(stderr, "Frequency: %4.1f MHz Rs: %4.1f kHz Shift: %4.1f kHz M: %d \n", frequency/1E6, SymbolRate/1E3, shiftHz/1E3, m);
if (one_zero_test == 0) { if ((carrier_test == 0) && (one_zero_test == 0)) {
/* regular FSK modulator operation */
while(running) { while(running) {
uint8_t tx_bits[log2m]; uint8_t tx_bits[log2m];
int BytesRead = fread(tx_bits, sizeof(uint8_t), log2m, fin); int BytesRead = fread(tx_bits, sizeof(uint8_t), log2m, fin);
@ -119,8 +121,17 @@ int main(int argc, char **argv)
running=false; running=false;
} }
} else { }
if (carrier_test) {
fprintf(stderr, "Carrier test mode, Ctrl-C to exit\n");
float VCOfreqHz = 0;
while(running) {
fmmod->SetFrequencySamples(&VCOfreqHz,1);
}
}
if (one_zero_test) {
fprintf(stderr, "...010101... test mode, Ctrl-C to exit\n"); fprintf(stderr, "...010101... test mode, Ctrl-C to exit\n");
float VCOfreqHz = 0; float VCOfreqHz = 0;
while(running) { while(running) {