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librtlsdr
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option to configure GPIO pin for biasT with rtlsdr_set_opt_string() from CLI 

Signed-off-by: hayati ayguen <h_ayguen@web.de>
development
hayati ayguen 2020-08-21 12:24:21 -07:00
parent 981586ccc3
commit 48da9065cf
1 changed files with 16 additions and 2 deletions
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18
src/librtlsdr.c
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@ -243,6 +243,8 @@ struct rtlsdr_dev {
WSADATA wsa; WSADATA wsa;
#endif #endif
int biast_gpio_pin_no;
/* status */ /* status */
int dev_lost; int dev_lost;
int driver_active; int driver_active;
@ -2813,6 +2815,7 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
pthread_mutex_init(&dev->cs_mutex, &dev->cs_mutex_attr); pthread_mutex_init(&dev->cs_mutex, &dev->cs_mutex_attr);
dev->rtl_vga_control = 0; dev->rtl_vga_control = 0;
dev->biast_gpio_pin_no = 0;
/* dev->softagc.command_thread; */ /* dev->softagc.command_thread; */
dev->softagc.agcState = SOFTSTATE_OFF; dev->softagc.agcState = SOFTSTATE_OFF;
@ -3026,7 +3029,8 @@ int rtlsdr_close(rtlsdr_dev_t *dev)
return -1; return -1;
/* automatic de-activation of bias-T */ /* automatic de-activation of bias-T */
rtlsdr_set_bias_tee(dev, 0); /* no: keep last bias-tee status, that rtl_biast hasn't to be called again */
/* rtlsdr_set_bias_tee(dev, 0); */
if(!dev->dev_lost) { if(!dev->dev_lost) {
/* block until all async operations have been completed (if any) */ /* block until all async operations have been completed (if any) */
@ -3846,7 +3850,10 @@ int rtlsdr_set_bias_tee_gpio(rtlsdr_dev_t *dev, int gpio, int on)
int rtlsdr_set_bias_tee(rtlsdr_dev_t *dev, int on) int rtlsdr_set_bias_tee(rtlsdr_dev_t *dev, int on)
{ {
return rtlsdr_set_bias_tee_gpio(dev, 0, on); if (!dev)
return -1;
return rtlsdr_set_bias_tee_gpio(dev, dev->biast_gpio_pin_no, on);
} }
@ -3873,6 +3880,7 @@ const char * rtlsdr_get_opt_help(int longInfo)
"\t\t 0: use I & Q; 1: use I; 2: use Q; 3: use I below threshold frequency;\n" "\t\t 0: use I & Q; 1: use I; 2: use Q; 3: use I below threshold frequency;\n"
"\t\t 4: use Q below threshold frequency (=RTL-SDR v3)\n" "\t\t 4: use Q below threshold frequency (=RTL-SDR v3)\n"
"\t\t other values set the threshold frequency\n" "\t\t other values set the threshold frequency\n"
"\t\tTp=<gpio_pin> set GPIO pin for Bias T, default =0 for rtl-sdr.com compatible V3\n"
"\t\tT=<bias_tee> 1 activates power at antenna one some dongles, e.g. rtl-sdr.com's V3\n" "\t\tT=<bias_tee> 1 activates power at antenna one some dongles, e.g. rtl-sdr.com's V3\n"
#ifdef WITH_UDP_SERVER #ifdef WITH_UDP_SERVER
"\t\tport=<udp_port> 1 or tcp port number activates UDP server. default: 0.\n" "\t\tport=<udp_port> 1 or tcp port number activates UDP server. default: 0.\n"
@ -4000,6 +4008,12 @@ int rtlsdr_set_opt_string(rtlsdr_dev_t *dev, const char *opts, int verbose)
dev->direct_sampling_threshold = dm; dev->direct_sampling_threshold = dm;
ret = rtlsdr_set_ds_mode(dev, dev->direct_sampling_mode, dev->direct_sampling_threshold); ret = rtlsdr_set_ds_mode(dev, dev->direct_sampling_mode, dev->direct_sampling_threshold);
} }
else if (!strncmp(optPart, "tp=", 3) || !strncmp(optPart, "Tp=", 3) || !strncmp(optPart, "TP=", 3) ) {
int gpio_pin_no = atoi(optPart +3);
if (verbose)
fprintf(stderr, "\nrtlsdr_set_opt_string(): parsed bias tee GPIO pin %d\n", gpio_pin_no);
dev->biast_gpio_pin_no = gpio_pin_no;
}
else if (!strncmp(optPart, "t=", 2) || !strncmp(optPart, "T=", 2)) { else if (!strncmp(optPart, "t=", 2) || !strncmp(optPart, "T=", 2)) {
int on = atoi(optPart +2); int on = atoi(optPart +2);
if (verbose) if (verbose)