debugging of OTA synchronization (sirius)

openair1/SCHED/ru_procedures.c

@@ -97,44 +97,26 @@ void feptx0(RU_t *ru,int slot) {
 */
 
       if (ru->generate_dmrs_sync == 1 && slot == 0 && subframe == 1 && aa==0) {
-	int32_t dmrs[ru->frame_parms.ofdm_symbol_size*14] __attribute__((aligned(32)));
-        int32_t *dmrsp[2] = {&dmrs[(3-ru->frame_parms.Ncp)*ru->frame_parms.ofdm_symbol_size],NULL};
+	//int32_t dmrs[ru->frame_parms.ofdm_symbol_size*14] __attribute__((aligned(32)));
+        //int32_t *dmrsp[2] ={dmrs,NULL}; //{&dmrs[(3-ru->frame_parms.Ncp)*ru->frame_parms.ofdm_symbol_size],NULL};
   
-        //generate_ul_ref_sigs();
-
-        //ru->dmrssync = (int16_t*)malloc16_clear(ru->frame_parms.ofdm_symbol_size*2*sizeof(int16_t)); 
 	generate_drs_pusch((PHY_VARS_UE *)NULL,
 			   (UE_rxtx_proc_t*)NULL,
 			   fp,
-			   dmrsp,//ru->common.txdataF_BF,
+			   ru->common.txdataF_BF,
 			   0,
 			   AMP,
-			   1,
+			   0,
 			   0,
 			   fp->N_RB_DL,
 			   aa);
-
-       idft1024((int16_t*)dmrsp[0],
-                (int16_t*)&ru->common.txdata[aa][slot_offset], 
-                1);
-         
-       /*normal_prefix_mod((int16_t*)dmrsp[0],
-                        (int*)&ru->common.txdata[aa][slot_offset],
-                        1,
-                        fp);
-      */
-       normal_prefix_mod(&ru->common.txdataF_BF[aa][slot*slot_sizeF],
-                        (int*)&ru->common.txdata[aa][slot_offset],
-                        3,
-                        fp);
-      }
-      else {
-       normal_prefix_mod(&ru->common.txdataF_BF[aa][slot*slot_sizeF],
+      } 
+      normal_prefix_mod(&ru->common.txdataF_BF[aa][slot*slot_sizeF],
                         (int*)&ru->common.txdata[aa][slot_offset],
                         7,
                         fp);
 
-      } 
+       
   }
    /* 
     len = fp->samples_per_tti>>1;

targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp

@@ -966,8 +966,6 @@ extern "C" {
 #endif
 
 extern "C" {
-   * \param openair0_cfg RF frontend parameters set by application
-   */
   int device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
     LOG_D(PHY, "openair0_cfg[0].sdr_addrs == '%s'\n", openair0_cfg[0].sdr_addrs);
     LOG_D(PHY, "openair0_cfg[0].clock_source == '%d'\n", openair0_cfg[0].clock_source);
@@ -1103,11 +1101,14 @@ extern "C" {
       s->usrp = uhd::usrp::multi_usrp::make(args);
 
       // lock mboard clocks
-      if (openair0_cfg[0].clock_source == internal)
+      if (openair0_cfg[0].clock_source == internal) {
         s->usrp->set_clock_source("internal");
-      else
+        printf("Setting clock source to internal\n");
+      }
+      else {
         s->usrp->set_clock_source("external");
-
+        printf("Setting clock source to external\n");
+      }
       if (device->type==USRP_X300_DEV) {
         openair0_cfg[0].rx_gain_calib_table = calib_table_x310;
 #if defined(USRP_REC_PLAY)

targets/RT/USER/lte-ru.c

@@ -720,7 +720,10 @@ void tx_rf(RU_t *ru) {
     int siglen=fp->samples_per_tti,flags=1;
     
     if (SF_type == SF_S) {
-      siglen = fp->dl_symbols_in_S_subframe*(fp->ofdm_symbol_size+fp->nb_prefix_samples0);
+      int txsymb = fp->dl_symbols_in_S_subframe+(ru->is_slave==0 ? 1 : 0);
+      AssertFatal(txsymb>0,"illegal txsymb %d\n",txsymb);
+      siglen = fp->nb_prefix_samples0 + (txsymb*fp->ofdm_symbol_size) + (txsymb-1)*fp->nb_prefix_samples;
+      //siglen = fp->dl_symbols_in_S_subframe*(fp->ofdm_symbol_size+fp->nb_prefix_samples0);
       flags=3; // end of burst
     }
     if ((fp->frame_type == TDD) &&
@@ -797,10 +800,10 @@ void tx_rf(RU_t *ru) {
 				      ru->nb_tx,
 				      flags);
     ru->south_out_cnt++;
-    //int se = dB_fixed(signal_energy(txp[0],siglen+sf_extension));
+    int se = dB_fixed(signal_energy(txp[0],siglen+sf_extension));
 
-    //LOG_D(PHY,"[TXPATH] RU %d tx_rf (en %d,len %d), writing to TS %llu, frame %d, unwrapped_frame %d, subframe %d\n",ru->idx,se,siglen+sf_extension,
-//	  (long long unsigned int)proc->timestamp_tx,proc->frame_tx,proc->frame_tx_unwrap,proc->subframe_tx);
+    if (SF_type == SF_S) LOG_D(PHY,"[TXPATH] RU %d tx_rf (en %d,len %d), writing to TS %llu, frame %d, unwrapped_frame %d, subframe %d\n",ru->idx,se,siglen+sf_extension,
+	  (long long unsigned int)proc->timestamp_tx,proc->frame_tx,proc->frame_tx_unwrap,proc->subframe_tx);
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE, 0 );
     
     
@@ -2639,11 +2642,9 @@ void init_RU(char *rf_config_file, clock_source_t clock_source,clock_source_t ti
     ru->ts_offset    = 0;
     if (ru->is_slave == 1) {
        ru->in_synch    = 0;
-       ru->dmrssync   = 0;
     }
     else {
        ru->in_synch    = 1;
-       ru->dmrssync    = 0;
        ru->generate_dmrs_sync=send_dmrssync;
     }
     ru->cmd	     = EMPTY;