mirror of
https://github.com/rtlsdrblog/rtl-sdr-blog.git
synced 2024-11-10 04:37:37 +01:00
fix gain setting and update usage information for CLI tools
This commit is contained in:
Dimitri Stolnikov
parent
6d34b04b42
commit
b5beddca4f
@ -42,16 +42,16 @@ static rtlsdr_dev_t *dev = NULL;
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void usage(void)
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{
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#ifdef _WIN32
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fprintf(stderr,"rtl-sdr, an I/Q recorder for RTL2832 based USB-sticks\n\n"
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"Usage:\t rtl-sdr-win.exe [device_index] [samplerate in kHz] "
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"[gain] [frequency in Hz] [filename]\n");
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fprintf(stderr,"rtl_sdr, an I/Q recorder for RTL2832 based DVB-T receivers\n\n"
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"Usage:\t rtl_sdr.exe [device_index] [samplerate in kHz] "
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"[gain (0 for auto)] [frequency in Hz] [filename]\n");
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#else
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fprintf(stderr,
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"rtl-sdr, an I/Q recorder for RTL2832 based DVB-T receivers\n\n"
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"rtl_sdr, an I/Q recorder for RTL2832 based DVB-T receivers\n\n"
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"Usage:\t -f frequency_to_tune_to [Hz]\n"
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"\t[-s samplerate (default: 2048000 Hz)]\n"
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"\t[-d device_index (default: 0)]\n"
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"\t[-g tuner_gain (default: -1dB)]\n"
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"\t[-g gain (default: 0 for auto)]\n"
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"\t[-b output_block_size (default: 16 * 16384)]\n"
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"\t[-S force sync output (default: async)]\n"
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"\tfilename (a '-' dumps samples to stdout)\n\n");
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@ -98,7 +98,7 @@ int main(int argc, char **argv)
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char *filename = NULL;
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int n_read;
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int r, opt;
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int i, gain = -10; // tenths of a dB
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int i, gain = 0;
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int sync_mode = 0;
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FILE *file;
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uint8_t *buffer;
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@ -118,7 +118,7 @@ int main(int argc, char **argv)
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frequency = (uint32_t)atof(optarg);
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break;
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case 'g':
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gain = (int)(atof(optarg) * 10);
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gain = (int)(atof(optarg) * 10); /* tenths of a dB */
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break;
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case 's':
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samp_rate = (uint32_t)atof(optarg);
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@ -141,11 +141,11 @@ int main(int argc, char **argv)
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filename = argv[optind];
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}
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#else
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if(argc <6)
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if(argc < 6)
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usage();
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dev_index = atoi(argv[1]);
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samp_rate = atoi(argv[2])*1000;
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gain=(int)(atof(argv[3]) * 10);
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samp_rate = atoi(argv[2])*1000; /* kHz */
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gain = (int)(atof(argv[3]) * 10); /* tenths of a dB */
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frequency = atoi(argv[4]);
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filename = argv[5];
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#endif
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@ -206,12 +206,24 @@ int main(int argc, char **argv)
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else
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fprintf(stderr, "Tuned to %u Hz.\n", frequency);
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/* Set the tuner gain */
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r = rtlsdr_set_tuner_gain(dev, gain);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set tuner gain.\n");
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else
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fprintf(stderr, "Tuner gain set to %f dB.\n", gain/10.0);
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if (0 == gain) {
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/* Enable automatic gain */
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r = rtlsdr_set_tuner_gain_mode(dev, 0);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to enable automatic gain.\n");
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} else {
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/* Enable manual gain */
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r = rtlsdr_set_tuner_gain_mode(dev, 1);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to enable manual gain.\n");
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/* Set the tuner gain */
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r = rtlsdr_set_tuner_gain(dev, gain);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set tuner gain.\n");
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else
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fprintf(stderr, "Tuner gain set to %f dB.\n", gain/10.0);
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}
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if(strcmp(filename, "-") == 0) { /* Write samples to stdout */
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file = stdout;
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@ -76,15 +76,15 @@ static int do_exit = 0;
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void usage(void)
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{
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#ifdef _WIN32
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printf("rtl-sdr, an I/Q recorder for RTL2832 based USB-sticks\n\n"
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"Usage:\t rtl-sdr-win.exe [listen addr] [listen port] "
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printf("rtl_tcp, an I/Q spectrum server for RTL2832 based DVB-T receivers\n\n"
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"Usage:\t rtl_tcp.exe [listen addr] [listen port] "
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"[samplerate in kHz] [frequency in Hz] [device index]\n");
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#else
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printf("rtl-sdr, an I/Q recorder for RTL2832 based USB-sticks\n\n"
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printf("rtl_tcp, an I/Q spectrum server for RTL2832 based DVB-T receivers\n\n"
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"Usage:\t[-a listen address]\n"
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"\t[-p listen port (default: 1234)]\n"
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"\t[-f frequency to tune to [Hz]]\n"
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"\t[-g tuner_gain (default: -1dB)]\n"
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"\t[-g gain (default: 0 for auto)]\n"
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"\t[-s samplerate in Hz (default: 2048000 Hz)]\n"
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"\t[-d device index (default: 0)]\n");
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#endif
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@ -311,7 +311,7 @@ int main(int argc, char **argv)
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struct sockaddr_in local, remote;
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int device_count;
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uint32_t dev_index = 0;
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int gain = -10; // tenths of a dB
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int gain = 0;
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struct llist *curelem,*prev;
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pthread_attr_t attr;
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void *status;
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@ -335,7 +335,7 @@ int main(int argc, char **argv)
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frequency = (uint32_t)atof(optarg);
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break;
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case 'g':
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gain = (int)(atof(optarg) * 10);
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gain = (int)(atof(optarg) * 10); /* tenths of a dB */
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break;
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case 's':
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samp_rate = (uint32_t)atof(optarg);
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@ -359,7 +359,7 @@ int main(int argc, char **argv)
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usage();
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dev_index = atoi(argv[5]);
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frequency = atoi(argv[4]);
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samp_rate = atoi(argv[3])*1000;
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samp_rate = atoi(argv[3])*1000; /* kHz */
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port = atoi(argv[2]);
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addr = argv[1];
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#endif
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@ -400,11 +400,24 @@ int main(int argc, char **argv)
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else
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fprintf(stderr, "Tuned to %i Hz.\n", frequency);
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r = rtlsdr_set_tuner_gain(dev, gain);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set tuner gain.\n");
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else
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fprintf(stderr, "Tuner gain set to %f dB.\n", gain/10.0);
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if (0 == gain) {
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/* Enable automatic gain */
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r = rtlsdr_set_tuner_gain_mode(dev, 0);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to enable automatic gain.\n");
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} else {
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/* Enable manual gain */
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r = rtlsdr_set_tuner_gain_mode(dev, 1);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to enable manual gain.\n");
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/* Set the tuner gain */
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r = rtlsdr_set_tuner_gain(dev, gain);
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if (r < 0)
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fprintf(stderr, "WARNING: Failed to set tuner gain.\n");
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else
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fprintf(stderr, "Tuner gain set to %f dB.\n", gain/10.0);
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}
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/* Reset endpoint before we start reading from it (mandatory) */
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r = rtlsdr_reset_buffer(dev);
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@ -44,12 +44,12 @@ static rtlsdr_dev_t *dev = NULL;
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void usage(void)
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{
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#ifdef _WIN32
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fprintf(stderr,"rtl-sdr, an I/Q recorder for RTL2832 based USB-sticks\n\n"
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"Usage:\t rtl-test-win.exe [device_index] [samplerate in kHz] [e4k test mode]\n"
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"\ti.e. rtl-test-win.exe 0 2048 1\n");
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fprintf(stderr,"rtl_test, a benchmark tool for RTL2832 based DVB-T receivers\n\n"
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"Usage:\t rtl_test.exe [device_index] [samplerate in kHz] [e4k test mode]\n"
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"\ti.e. rtl_test.exe 0 2048 1\n");
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#else
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fprintf(stderr,
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"rtl_test, librtlsdr test tool\n\n"
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"rtl_test, a benchmark tool for RTL2832 based DVB-T receivers\n\n"
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"Usage:\n"
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"\t[-s samplerate (default: 2048000 Hz)]\n"
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"\t[-d device_index (default: 0)]\n"
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