Merge pull request #15503 from hallard/nordic_rak4630

RAK4630 LoRaWAN Allow change TCXO control adding it as a parameter

Author: 0xc0170

connectivity/drivers/lora/COMPONENT_SX126X/SX126X_LoRaRadio.cpp

@@ -437,7 +437,7 @@ void SX126X_LoRaRadio::cold_start_wakeup()
     if (MBED_CONF_SX126X_LORA_DRIVER_XTAL == 0) {
 #endif
         caliberation_params_t calib_param;
-        set_dio3_as_tcxo_ctrl(TCXO_CTRL_1_7V, 320); //5 ms
+        set_dio3_as_tcxo_ctrl(MBED_CONF_SX126X_LORA_DRIVER_TCXO_CTRL, 320); //5 ms
         calib_param.value = 0x7F;
         write_opmode_command(RADIO_CALIBRATE, &calib_param.value, 1);
     }

connectivity/drivers/lora/COMPONENT_SX126X/mbed_lib.json

@@ -38,6 +38,10 @@
             "help": "Default: -1 = use crystal-select, TXCO = 0, XTAL = 1",
             "value": -1
         },
+        "tcxo-ctrl": {
+            "help": "TCXO Control voltage. Default: TCXO control TCXO_CTRL_1_7V (RAK4630 use TCXO_CTRL_3_0V)",
+            "value": "TCXO_CTRL_1_7V"
+        },
         "spi-mosi": {
             "value": "NC"
         },