T-Echo Lite LoRa radio fixes

- Set TCXO voltage to 1.8 (not defined previously, falls back to default)
- Set correct variable name for SX1262 RX/TX pins
- Fix SX1262 RX pin number

variants/lilygo_techo_lite/platformio.ini

@@ -12,6 +12,7 @@ build_flags = ${nrf52_base.build_flags}
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D LORA_TX_POWER=22
   -D SX126X_POWER_EN=30
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
   -D P_LORA_TX_LED=LED_GREEN
@@ -115,6 +116,7 @@ build_flags =
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D LORA_TX_POWER=22
   -D SX126X_POWER_EN=30
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
   -D P_LORA_TX_LED=LED_GREEN

variants/lilygo_techo_lite/variant.h

@@ -107,8 +107,8 @@
 #define SX126X_DIO1             _PINNUM(1, 8)
 #define SX126X_BUSY             _PINNUM(0, 14)
 #define SX126X_RESET            _PINNUM(0, 7)
-#define SX126X_RF_VC1           _PINNUM(0, 27)
-#define SX126X_RF_VC2           _PINNUM(0, 33)
+#define SX126X_RXEN             _PINNUM(1, 1)
+#define SX126X_TXEN             _PINNUM(0, 27)
 
 #define P_LORA_DIO_1            SX126X_DIO1
 #define P_LORA_NSS              LORA_CS