Fixed rest of examples for new UHD driver

srslte/examples/cell_measurement.c

@@ -34,7 +34,6 @@
 #include <sys/time.h>
 #include <unistd.h>
 #include <assert.h>
-#include <signal.h>
 
 #include "srslte/srslte.h"
 #include "srslte/cuhd/cuhd.h"
@@ -168,6 +167,8 @@ int main(int argc, char **argv) {
     cuhd_set_rx_gain(uhd, 50);      
   }
 
+  cuhd_set_master_clock_rate(uhd, 30.72e6);        
+
   /* set receiver frequency */
   cuhd_set_rx_freq(uhd, (double) prog_args.uhd_freq);
   cuhd_rx_wait_lo_locked(uhd);
@@ -183,17 +184,23 @@ int main(int argc, char **argv) {
   }
   
   /* set sampling frequency */
-  int srate = srslte_sampling_freq_hz(cell.nof_prb);
-  if (srate != -1) {  
-    /* Modify master clock rate for 15 Mhz */
-    if (cell.nof_prb == 75) {
-      cuhd_set_master_clock_rate(uhd, 23.04e6);
+    int srate = srslte_sampling_freq_hz(cell.nof_prb);    
+    if (srate != -1) {  
+      if (srate < 10e6) {          
+        cuhd_set_master_clock_rate(uhd, 4*srate);        
+      } else {
+        cuhd_set_master_clock_rate(uhd, srate);        
+      }
+      printf("Setting sampling rate %.2f MHz\n", (float) srate/1000000);
+      float srate_uhd = cuhd_set_rx_srate(uhd, (double) srate);
+      if (srate_uhd != srate) {
+        fprintf(stderr, "Could not set sampling rate\n");
+        exit(-1);
+      }
+    } else {
+      fprintf(stderr, "Invalid number of PRB %d\n", cell.nof_prb);
+      exit(-1);
     }
-    cuhd_set_rx_srate(uhd, (double) srate);      
-  } else {
-    fprintf(stderr, "Invalid number of PRB %d\n", cell.nof_prb);
-    return SRSLTE_ERROR;
-  }
 
   INFO("Stopping UHD and flushing buffer...\n",0);
   cuhd_stop_rx_stream(uhd);

srslte/examples/cell_search.c

@@ -165,6 +165,9 @@ int main(int argc, char **argv) {
     }
     cuhd_set_rx_gain(uhd, 50);      
   }
+
+  cuhd_set_master_clock_rate(uhd, 30.72e6);        
+
   // Supress UHD messages
   cuhd_supress_stdout();
   

srslte/examples/pdsch_enodeb.c

@@ -490,6 +490,9 @@ int main(int argc, char **argv) {
   }
 
 #ifndef DISABLE_UHD
+
+  cuhd_set_master_clock_rate(uhd, 30.72e6);        
+
   if (!output_file_name) {
     printf("Set TX rate: %.2f MHz\n",
         cuhd_set_tx_srate(uhd, srslte_sampling_freq_hz(cell.nof_prb)) / 1000000);

srslte/examples/pdsch_ue.c

@@ -324,8 +324,7 @@ int main(int argc, char **argv) {
     } while (ret == 0); 
     
     /* set sampling frequency */
-    int srate = srslte_sampling_freq_hz(cell.nof_prb);
-    
+    int srate = srslte_sampling_freq_hz(cell.nof_prb);    
     if (srate != -1) {  
       if (srate < 10e6) {          
         cuhd_set_master_clock_rate(uhd, 4*srate);        

srslte/examples/prach_ue.c

@@ -312,6 +312,8 @@ int main(int argc, char **argv) {
     exit(-1);
   }
 
+  cuhd_set_master_clock_rate(uhd, 30.72e6);        
+
   /* Set receiver gain */
   float x = cuhd_set_rx_gain(uhd, prog_args.uhd_rx_gain);
   printf("Set RX gain to %.1f dB\n", x);
@@ -342,18 +344,23 @@ cell.id = 1;
 cell.nof_ports = 1; 
 
   /* set sampling frequency */
-  int srate = srslte_sampling_freq_hz(cell.nof_prb);
-  if (srate != -1) {  
-    /* Modify master clock rate for 15 Mhz */
-    if (cell.nof_prb == 75) {
-      cuhd_set_master_clock_rate(uhd, 23.04e6);
+    int srate = srslte_sampling_freq_hz(cell.nof_prb);    
+    if (srate != -1) {  
+      if (srate < 10e6) {          
+        cuhd_set_master_clock_rate(uhd, 4*srate);        
+      } else {
+        cuhd_set_master_clock_rate(uhd, srate);        
+      }
+      printf("Setting sampling rate %.2f MHz\n", (float) srate/1000000);
+      float srate_uhd = cuhd_set_rx_srate(uhd, (double) srate);
+      if (srate_uhd != srate) {
+        fprintf(stderr, "Could not set sampling rate\n");
+        exit(-1);
+      }
+    } else {
+      fprintf(stderr, "Invalid number of PRB %d\n", cell.nof_prb);
+      exit(-1);
     }
-    cuhd_set_rx_srate(uhd, (double) srate);      
-    cuhd_set_tx_srate(uhd, (double) srate);      
-  } else {
-    fprintf(stderr, "Invalid number of PRB %d\n", cell.nof_prb);
-    exit(-1);
-  }
 
   INFO("Stopping UHD and flushing buffer...\r",0);
   cuhd_stop_rx_stream(uhd);

srslte/examples/usrp_capture.c

@@ -122,6 +122,8 @@ int main(int argc, char **argv) {
     fprintf(stderr, "Error opening uhd\n");
     exit(-1);
   }
+  cuhd_set_master_clock_rate(uhd, 30.72e6);        
+
   printf("Set RX freq: %.6f MHz\n", cuhd_set_rx_freq(uhd, uhd_freq) / 1000000);
   printf("Set RX gain: %.1f dB\n", cuhd_set_rx_gain(uhd, uhd_gain));
   printf("Set RX rate: %.6f MHz\n", cuhd_set_rx_srate(uhd, uhd_rate*1e6) / 1000000);

srslte/examples/usrp_capture_sync.c

@@ -123,6 +123,8 @@ int main(int argc, char **argv) {
     fprintf(stderr, "Error opening uhd\n");
     exit(-1);
   }
+  cuhd_set_master_clock_rate(uhd, 30.72e6);        
+
   printf("Set RX freq: %.6f MHz\n", cuhd_set_rx_freq(uhd, uhd_freq) / 1000000);
   printf("Set RX gain: %.1f dB\n", cuhd_set_rx_gain(uhd, uhd_gain));
   printf("Set RX rate: %.6f MHz\n", cuhd_set_rx_srate(uhd, srslte_sampling_freq_hz(nof_prb)) / 1000000);

srslte/examples/usrp_txrx.c

@@ -126,6 +126,8 @@ int main(int argc, char **argv) {
     fprintf(stderr, "Error opening uhd\n");
     exit(-1);
   }
+  cuhd_set_master_clock_rate(uhd, 30.72e6);        
+
   printf("Subframe len:   %d samples\n", flen);
   printf("Set TX/RX rate: %.2f MHz\n", cuhd_set_rx_srate(uhd, srslte_sampling_freq_hz(nof_prb)) / 1000000);
   printf("Set RX gain: %.1f dB\n", cuhd_set_rx_gain(uhd, uhd_rx_gain));