diff options
| author | Dimitri Stolnikov <horiz0n@gmx.net> | 2012-05-07 22:59:34 +0200 |
|---|---|---|
| committer | Dimitri Stolnikov <horiz0n@gmx.net> | 2012-05-07 22:59:34 +0200 |
| commit | e042c36cb5b0aed5a9e5e768eaa0233920131cb3 (patch) | |
| tree | 38b2787b37956ede4a459a5e867f18864243ddcb /src/rtl_tcp.c | |
| parent | b290116ac72655c64403e6bf10ebc424f44c9373 (diff) | |
rtl_sdr, rtl_tcp: cleaned up gain handling
Diffstat (limited to 'src/rtl_tcp.c')
| -rw-r--r-- | src/rtl_tcp.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/src/rtl_tcp.c b/src/rtl_tcp.c index 8406074..03ffe2d 100644 --- a/src/rtl_tcp.c +++ b/src/rtl_tcp.c @@ -82,9 +82,10 @@ void usage(void) "[samplerate in kHz] [frequency in Hz] [device index]\n"); #else printf("rtl-sdr, an I/Q recorder for RTL2832 based USB-sticks\n\n" - "Usage:\t -a listen address\n" - "\t[-p listen port (default: 1234)\n" - "\t -f frequency to tune to [Hz]\n" + "Usage:\t[-a listen address]\n" + "\t[-p listen port (default: 1234)]\n" + "\t[-f frequency to tune to [Hz]]\n" + "\t[-g tuner_gain (default: -1dB)]\n" "\t[-s samplerate in Hz (default: 2048000 Hz)]\n" "\t[-d device index (default: 0)]\n"); #endif @@ -307,10 +308,11 @@ int main(int argc, char **argv) int r, opt, i; char* addr = "127.0.0.1"; int port = 1234; - uint32_t frequency = 0, samp_rate = 2048000; + uint32_t frequency = 100000000, samp_rate = 2048000; struct sockaddr_in local, remote; int device_count; - uint32_t dev_index = 0, gain = -10; + uint32_t dev_index = 0; + int gain = -10; // tenths of a dB struct llist *curelem,*prev; pthread_attr_t attr; void *status; @@ -325,7 +327,7 @@ int main(int argc, char **argv) #endif #ifndef _WIN32 struct sigaction sigact; - while ((opt = getopt(argc, argv, "a:p:f:s:d:")) != -1) { + while ((opt = getopt(argc, argv, "a:p:f:g:s:d:")) != -1) { switch (opt) { case 'd': dev_index = atoi(optarg); @@ -333,6 +335,9 @@ int main(int argc, char **argv) case 'f': frequency = (uint32_t)atof(optarg); break; + case 'g': + gain = (int)(atof(optarg) * 10); + break; case 's': samp_rate = (uint32_t)atof(optarg); break; @@ -403,7 +408,7 @@ int main(int argc, char **argv) if (r < 0) fprintf(stderr, "WARNING: Failed to set tuner gain.\n"); else - fprintf(stderr, "Tuner gain set to %i dB.\n", gain); + fprintf(stderr, "Tuner gain set to %f dB.\n", gain/10.0); /* Reset endpoint before we start reading from it (mandatory) */ r = rtlsdr_reset_buffer(dev); |