initial LMS7002M register configuration. modifications for lte-ue and rf_device to use LimeSDR.

openair1/PHY/MODULATION/ofdm_mod.c

@@ -136,7 +136,7 @@ void PHY_ofdm_mod(int *input,                       /// pointer to complex input
 #ifdef DEBUG_OFDM_MOD
     printf("[PHY] symbol %d/%d offset %d (%p,%p -> %p)\n",i,nb_symbols,i*fftsize+(i*nb_prefix_samples),input,&input[i*fftsize],&output[(i*fftsize) + ((i)*nb_prefix_samples)]);
 #endif
-
+    /*
 #ifndef __AVX2__
     // handle 128-bit alignment for 128-bit SIMD (SSE4,NEON,AltiVEC)
     idft((int16_t *)&input[i*fftsize],
@@ -149,7 +149,11 @@ void PHY_ofdm_mod(int *input,                       /// pointer to complex input
          1);
 
 #endif
+    */
 
+    idft((int16_t *)&input[i*fftsize],
+         (int16_t *)temp,
+         1);
     // Copy to frame buffer with Cyclic Extension
     // Note:  will have to adjust for synchronization offset!
 
@@ -160,12 +164,12 @@ void PHY_ofdm_mod(int *input,                       /// pointer to complex input
 
 
       //      msg("Doing cyclic prefix method\n");
-
+      /*
 #ifndef __AVX2__
       if (fftsize==128) 
 #else
       if (fftsize<=512) 
-#endif
+      #endif*/
       {
         for (j=0; j<fftsize ; j++) {
           output_ptr[j] = temp_ptr[j];

targets/ARCH/COMMON/common_lib.h

@@ -362,6 +362,9 @@ struct openair0_device_t {
    */
   int (*trx_set_gains_func)(openair0_device* device, openair0_config_t *openair0_cfg);
 
+  /*! \brief Indicator that device is running
+   */
+  int trx_started;
 };
 
 /* type of device init function, implemented in shared lib */

targets/ARCH/LMSSDR/USERSPACE/LIB/lms_lib.cpp

@@ -132,26 +132,37 @@ void set_rx_gain_offset(openair0_config_t *openair0_cfg, int chain_index) {
  */
 int trx_lms_set_gains(openair0_device* device, openair0_config_t *openair0_cfg) {
 
-  LMS_SetNormalizedGain(lms_device, LMS_CH_TX, 0, openair0_cfg[0].tx_gain[0]/100.0);
+  int ret=0;
 
-  // RX gains, use low-level setting
+  double rxg_ratio = openair0_cfg[0].rx_gain[0]/openair0_cfg[0].rx_gain_offset[0];
+  if (rxg_ratio > 1) {
+    printf("[LMS] Reduce RX Gain 0 by %f dB\n",openair0_cfg[0].rx_gain[0]-openair0_cfg[0].rx_gain_offset[0]);
+    ret = -1;
+    rxg_ratio = 1;
+  }
   
+  LMS_SetNormalizedGain(lms_device, LMS_CH_TX, 0, openair0_cfg[0].tx_gain[0]/100.0);
+  LMS_SetNormalizedGain(lms_device, LMS_CH_RX, 0, .8*rxg_ratio); 
+  /*
+  // RX gains, use low-level setting
   double gv = openair0_cfg[0].rx_gain[0] - openair0_cfg[0].rx_gain_offset[0];   
   if (gv > 31) {     
     printf("RX Gain 0 too high, reduce by %f dB\n",gv-31);     
     gv = 31;
+    ret=-1;
   }   
   if (gv < 0) {     
     printf("RX Gain 0 too low, increase by %f dB\n",-gv);     
     gv = 0;
+    ret=-1;
   }   
   printf("[LMS] Setting 7002M G_PGA_RBB to %d\n", (int16_t)gv);   
   LMS7002M lms7;
   lms7.SetConnection(lms7.GetConnection());
   lms7.Modify_SPI_Reg_bits(LMS7param(G_PGA_RBB),(int16_t)gv);
+  */
 
-
-  return(0);
+  return(ret);
 }
 
 /*! \brief Start LMSSDR
@@ -163,6 +174,7 @@ int trx_lms_start(openair0_device *device){
     lms_info_str_t list[16]={0};
 
     int n= LMS_GetDeviceList(list);
+    int ret;
     
     if (n <= 0) {
         fprintf(stderr, "No LimeSDR board found: %s\n", n < 0?LMS_GetLastErrorMessage():"");
@@ -212,9 +224,9 @@ int trx_lms_start(openair0_device *device){
     }
     printf("Set TX frequency %f MHz\n",device->openair0_cfg[0].tx_freq[0]/1e6);
 
-    printf("Override antenna settings to: RX1_H, TXA_2");
-    LMS_SetAntenna(lms_device, LMS_CH_RX, 0, 1);
-    LMS_SetAntenna(lms_device, LMS_CH_TX, 0, 2);
+    //    printf("Override antenna settings to: RX1_H, TXA_2");
+    //    LMS_SetAntenna(lms_device, LMS_CH_RX, 0, 1);
+    //   LMS_SetAntenna(lms_device, LMS_CH_TX, 0, 2);
 
 
     
@@ -245,7 +257,7 @@ int trx_lms_start(openair0_device *device){
     tx_stream.dataFmt = lms_stream_t::LMS_FMT_I12;
     tx_stream.isTx = true;
 
-    trx_lms_set_gains(device, device->openair0_cfg);
+    if ((ret = trx_lms_set_gains(device, device->openair0_cfg))<0) return(-1);
 
     if (LMS_SetupStream(lms_device, &tx_stream)!=0)
         printf("TX stream setup failed %s\n",LMS_GetLastErrorMessage());
@@ -259,6 +271,7 @@ int trx_lms_start(openair0_device *device){
         printf("Failed to start TX stream %s\n",LMS_GetLastErrorMessage());
     if (LMS_StartStream(&tx_stream)!=0)
         printf("Failed to start Rx stream %s\n",LMS_GetLastErrorMessage());
+    device->trx_started=1;
     return 0;
 }
 
@@ -272,6 +285,7 @@ int trx_lms_stop(openair0_device *device) {
     LMS_DestroyStream(lms_device,&rx_stream);
     LMS_DestroyStream(lms_device,&tx_stream);
     LMS_Close(lms_device);
+    device->trx_started=0;
 }
 
 /*! \brief Set frequencies (TX/RX)
@@ -292,19 +306,27 @@ int trx_lms_set_freq(openair0_device* device, openair0_config_t *openair0_cfg,in
 
 // 31 = 19 dB => 105 dB total gain @ 2.6 GHz
 /*! \brief calibration table for LMSSDR */
+// V1.2 board
+rx_gain_calib_table_t calib_table_lmssdr_1v2[] = {
+  {3500000000.0,44.0},  // on L PAD
+  {2660000000.0,62.0},  // on L PAD
+  {2300000000.0,62.0},  // on L PAD
+  {1880000000.0,64.0},  // on L PAD
+  {816000000.0,79.0},   // on W PAD
+  {-1,0}};
+// V1.4 board
 rx_gain_calib_table_t calib_table_lmssdr[] = {
-  {3500000000.0,70.0},
-  {2660000000.0,80.0},
-  {2300000000.0,80.0},
-  {1880000000.0,74.0},  // on W PAD
-  {816000000.0,76.0},   // on W PAD
+  {3500000000.0,97.0},  // on H PAD
+  {2660000000.0,110.0},  // on H PAD
+  {2300000000.0,106.0},  // on H PAD
+  {1880000000.0,106.0},  // on H PAD
+  {816000000.0,102.0},   // on W PAD
   {-1,0}};
 
 
 
 
 
-
 /*! \brief Get LMSSDR Statistics
  * \param device the hardware to use
  * \returns 0 in success
@@ -332,7 +354,7 @@ int trx_lms_reset_stats(openair0_device* device) {
  */
 void trx_lms_end(openair0_device *device) {
 
-
+  device->trx_started=0;
 }
 
 extern "C" {

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

@@ -137,6 +137,8 @@ static int trx_usrp_start(openair0_device *device)
   s->tx_count = 0;
   s->rx_timestamp = 0;
 
+  device->trx_started=1;
+  
   return 0;
 }
 /*! \brief Terminate operation of the USRP transceiver -- free all associated resources 
@@ -152,7 +154,7 @@ static void trx_usrp_end(openair0_device *device)
   s->tx_md.end_of_burst = true;
   s->tx_stream->send("", 0, s->tx_md);
   s->tx_md.end_of_burst = false;
-  
+  device->trx_started=0;
 }
 
 /*! \brief Called to send samples to the USRP RF target
@@ -453,6 +455,7 @@ int trx_usrp_set_gains(openair0_device* device,
  * \param card refers to the hardware index to use
  */
 int trx_usrp_stop(openair0_device* device) {
+  device->trx_started=0;
   return(0);
 }
 

targets/RT/USER/lte-ue.c

@@ -368,14 +368,15 @@ static void *UE_thread_synch(void *arg)
   while (sync_var<0)
     pthread_cond_wait(&sync_cond, &sync_mutex);
 
-  pthread_mutex_unlock(&sync_mutex);
-  printf("Started device, unlocked sync_mutex (UE_sync_thread)\n");
 
   if (UE->rfdevice.trx_start_func(&UE->rfdevice) != 0 ) { 
     LOG_E(HW,"Could not start the device\n");
     oai_exit=1;
   }
 
+  pthread_mutex_unlock(&sync_mutex);
+  printf("Started device, unlocked sync_mutex (UE_sync_thread)\n");
+
   while (oai_exit==0) {
 
     if (pthread_mutex_lock(&UE->proc.mutex_synch) != 0) {
@@ -485,13 +486,14 @@ static void *UE_thread_synch(void *arg)
 	
 	  UE->rfdevice.trx_set_freq_func(&UE->rfdevice,&openair0_cfg[0],0);
 	  //UE->rfdevice.trx_set_gains_func(&openair0,&openair0_cfg[0]);
-	  UE->rfdevice.trx_stop_func(&UE->rfdevice);	  
-	  sleep(1);
-	  init_frame_parms(&UE->frame_parms,1);
-	  if (UE->rfdevice.trx_start_func(&UE->rfdevice) != 0 ) { 
-	    LOG_E(HW,"Could not start the device\n");
-	    oai_exit=1;
-	  }
+
+	  //UE->rfdevice.trx_stop_func(&UE->rfdevice);	  
+	  //	  sleep(1);
+	  //	  init_frame_parms(&UE->frame_parms,1);
+	  //	  if (UE->rfdevice.trx_start_func(&UE->rfdevice) != 0 ) { 
+	  //	    LOG_E(HW,"Could not start the device\n");
+	  //	    oai_exit=1;
+	  //	  }
 	}
 	else {
 	  UE->is_synchronized = 1;
@@ -939,6 +941,9 @@ void *UE_thread(void *arg) {
   itti_send_msg_to_task (TASK_NAS_UE, INSTANCE_DEFAULT, message_p);
 #endif 
 
+  while (UE->rfdevice.trx_started==0)
+    usleep(500);
+  
   while (!oai_exit) {
     
     if (UE->is_synchronized == 0) {