lime: add lo_locked sensor read

lib/src/phy/rf/rf_soapy_imp.c

@@ -97,7 +97,11 @@ char* rf_soapy_devname(void* h)
 
 bool rf_soapy_rx_wait_lo_locked(void *h)
 {
-  printf("TODO: implement rf_soapy_rx_wait_lo_locked()\n");
+  rf_soapy_handler_t *handler = (rf_soapy_handler_t*)h;
+  char *ret = SoapySDRDevice_readChannelSensor(handler->device, SOAPY_SDR_RX, 0, "lo_locked");
+  if (ret != NULL) {
+    return (strcmp(ret, "true") == 0 ? true : false);
+  }
   return true;
 }
 
@@ -212,7 +216,7 @@ int rf_soapy_open_multi(char *args, void **h, uint32_t nof_rx_antennas)
   
   SoapySDRDevice *sdr = SoapySDRDevice_make(&(soapy_args[0]));
   if (sdr == NULL) {
-    printf("failed to create SOAPY object\n");
+    printf("Failed to create Soapy object\n");
     return SRSLTE_ERROR;
   }
   
@@ -225,7 +229,7 @@ int rf_soapy_open_multi(char *args, void **h, uint32_t nof_rx_antennas)
   handler->rx_stream_active = false;
   handler->devname = devname;
   if(SoapySDRDevice_getNumChannels(handler->device,SOAPY_SDR_RX) > 0){     
-    printf("setting up RX stream\n");
+    printf("Setting up RX stream\n");
     if(SoapySDRDevice_setupStream(handler->device, &(handler->rxStream), SOAPY_SDR_RX, SOAPY_SDR_CF32, NULL, 0, NULL) != 0) {
       printf("Rx setupStream fail: %s\n", SoapySDRDevice_lastError());
       return SRSLTE_ERROR;
@@ -233,19 +237,27 @@ int rf_soapy_open_multi(char *args, void **h, uint32_t nof_rx_antennas)
   }
 
   if(SoapySDRDevice_getNumChannels(handler->device,SOAPY_SDR_TX) > 0){
-    printf("setting up TX stream\n");
+    printf("Setting up TX stream\n");
     if (SoapySDRDevice_setupStream(handler->device, &(handler->txStream), SOAPY_SDR_TX, SOAPY_SDR_CF32, NULL, 0, NULL) != 0) {
       printf("Tx setupStream fail: %s\n", SoapySDRDevice_lastError());
       return SRSLTE_ERROR;
     }     
   }
+
+  // list device sensors
   size_t sensor_length;
   char** sensors;
   sensors = SoapySDRDevice_listSensors(handler->device, &sensor_length);
-  for(int i = 0; i < sensor_length;i++)
+  printf("Available device sensors: \n");
-  {
+  for(int i = 0; i < sensor_length; i++) {
-    printf("available sensors are : \n");
+    printf(" - %s\n", sensors[i]);
-    puts(sensors[i]);
+  }
+
+  // list channel sensors
+  sensors = SoapySDRDevice_listChannelSensors(handler->device, SOAPY_SDR_RX, 0, &sensor_length);
+  printf("Available sensors for RX channel 0: \n");
+  for(int i = 0; i < sensor_length; i++) {
+    printf(" - %s\n", sensors[i]);
   }
 
   return SRSLTE_SUCCESS;