calibration (RX) for LimeSDR. Use of new API for RF gains.

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

@@ -134,15 +134,15 @@ int trx_lms_set_gains(openair0_device* device, openair0_config_t *openair0_cfg)
 
   int ret=0;
 
-  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]);
+  //  double rxg_ratio = openair0_cfg[0].rx_gain[0]/openair0_cfg[0].rx_gain_offset[0];
+  if (openair0_cfg->rx_gain[0] > 70+openair0_cfg->rx_gain_offset[0]) {
+    printf("[LMS] Reduce RX Gain 0 by %f dB\n",openair0_cfg->rx_gain[0]-openair0_cfg->rx_gain_offset[0]-70);
     ret = -1;
-    rxg_ratio = 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); 
+  LMS_SetGaindB(lms_device, LMS_CH_TX, 0, openair0_cfg->tx_gain[0]);
+  LMS_SetGaindB(lms_device, LMS_CH_RX, 0, openair0_cfg->rx_gain[0]-openair0_cfg->rx_gain_offset[0]); 
   /*
   // RX gains, use low-level setting
   double gv = openair0_cfg[0].rx_gain[0] - openair0_cfg[0].rx_gain_offset[0];   
@@ -309,18 +309,18 @@ int trx_lms_set_freq(openair0_device* device, openair0_config_t *openair0_cfg,in
 // 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
+  {2660000000.0,55.0},  // on L PAD
+  {2300000000.0,54.0},  // on L PAD
+  {1880000000.0,54.0},  // on L PAD
   {816000000.0,79.0},   // on W PAD
   {-1,0}};
 // V1.4 board
 rx_gain_calib_table_t calib_table_lmssdr[] = {
-  {3500000000.0,97.0},  // on H PAD
-  {2660000000.0,110.0},  // on H PAD
-  {2300000000.0,106.0},  // on H PAD
-  {1880000000.0,106.0},  // on H PAD
-  {816000000.0,116.0},   // on W PAD
+  {3500000000.0,44.0},  // on H PAD
+  {2660000000.0,55.0},  // on H PAD
+  {2300000000.0,54.0},  // on H PAD
+  {1880000000.0,54.0},  // on H PAD
+  {816000000.0,79.0},   // on L PAD
   {-1,0}};
 
 

targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band13.tm1.50PRB.lmssdr.conf

@@ -40,7 +40,7 @@ eNBs =
         nb_antennas_tx          			      = 1;
         nb_antennas_rx          			      = 1;
         tx_gain                                            = 20;
-        rx_gain                                            = 116;
+        rx_gain                                            = 100;
         prach_root              			      = 0;
         prach_config_index      			      = 0;
         prach_high_speed        			      = "DISABLE";
@@ -136,7 +136,7 @@ eNBs =
     };
 
     ////////// MME parameters:
-    mme_ip_address      = ( { ipv4       = "192.168.12.70";
+    mme_ip_address      = ( { ipv4       = "127.0.0.3";
                               ipv6       = "192:168:30::17";
                               active     = "yes";
                               preference = "ipv4";
@@ -145,11 +145,11 @@ eNBs =
 
     NETWORK_INTERFACES :
     {
-        ENB_INTERFACE_NAME_FOR_S1_MME            = "eth0";
-        ENB_IPV4_ADDRESS_FOR_S1_MME              = "192.168.12.150/24";
+        ENB_INTERFACE_NAME_FOR_S1_MME            = "lo";
+        ENB_IPV4_ADDRESS_FOR_S1_MME              = "127.0.0.2/24";
 
-        ENB_INTERFACE_NAME_FOR_S1U               = "eth0";
-        ENB_IPV4_ADDRESS_FOR_S1U                 = "192.168.12.150/24";
+        ENB_INTERFACE_NAME_FOR_S1U               = "lo";
+        ENB_IPV4_ADDRESS_FOR_S1U                 = "127.0.0.5/24";
         ENB_PORT_FOR_S1U                         = 2152; # Spec 2152
     };