Add basic LR1121 support for T-Beam S3, full support needs #4775 fixed

Author: mariusfaber98

variants/esp32s3/tbeam-s3-core/rfswitch.h

@@ -0,0 +1,11 @@
+#include "RadioLib.h"
+
+static const uint32_t rfswitch_dio_pins[] = {RADIOLIB_LR11X0_DIO5, RADIOLIB_LR11X0_DIO6, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC};
+
+static const Module::RfSwitchMode_t rfswitch_table[] = {
+    // mode                  DIO5  DIO6
+    {LR11x0::MODE_STBY, {LOW, LOW}},  {LR11x0::MODE_RX, {HIGH, LOW}},
+    {LR11x0::MODE_TX, {LOW, HIGH}},   {LR11x0::MODE_TX_HP, {LOW, HIGH}},
+    {LR11x0::MODE_TX_HF, {LOW, LOW}}, {LR11x0::MODE_GNSS, {LOW, LOW}},
+    {LR11x0::MODE_WIFI, {LOW, LOW}},  END_OF_MODE_TABLE,
+};

variants/esp32s3/tbeam-s3-core/variant.h

@@ -15,6 +15,7 @@
 // not found then probe for SX1262
 #define USE_SX1262
 #define USE_SX1268
+#define USE_LR1121
 
 #define LORA_DIO0 -1 // a No connect on the SX1262 module
 #define LORA_RESET 5
@@ -34,6 +35,19 @@
 // code)
 #endif
 
+// LR1121
+#ifdef USE_LR1121
+#define LR1121_IRQ_PIN 1
+#define LR1121_NRESET_PIN LORA_RESET
+#define LR1121_BUSY_PIN 4
+#define LR1121_SPI_NSS_PIN 10
+#define LR1121_SPI_SCK_PIN 12
+#define LR1121_SPI_MOSI_PIN 11
+#define LR1121_SPI_MISO_PIN 13
+#define LR11X0_DIO3_TCXO_VOLTAGE 3.0
+#define LR11X0_DIO_AS_RF_SWITCH
+#endif
+
 // Leave undefined to disable our PMU IRQ handler.  DO NOT ENABLE THIS because the pmuirq can cause sperious interrupts
 // and waking from light sleep
 // #define PMU_IRQ 40
@@ -64,4 +78,4 @@
 // has 32768 Hz crystal
 #define HAS_32768HZ 1
 
-#define USE_SH1106
+#define USE_SH1106