Restore normal T-Beam 1W RXEN startup

src/helpers/radiolib/CustomSX1262.h

@@ -173,12 +173,6 @@ class CustomSX1262 : public SX1262 {
       static const uint32_t pins[Module::RFSWITCH_MAX_PINS] = {
         SX126X_RXEN, tx_en, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC,
       };
-      static const Module::RfSwitchMode_t lna_enabled_table[] = {
-        { Module::MODE_IDLE, { LOW,  LOW } },
-        { Module::MODE_RX,   { HIGH, LOW } },
-        { Module::MODE_TX,   { LOW,  HIGH } },
-        END_OF_MODE_TABLE,
-      };
       static const Module::RfSwitchMode_t lna_disabled_table[] = {
         { Module::MODE_IDLE, { LOW, LOW } },
         { Module::MODE_RX,   { LOW, LOW } },
@@ -186,8 +180,12 @@ class CustomSX1262 : public SX1262 {
         END_OF_MODE_TABLE,
       };
 
-      this->mod->setRfSwitchTable(
-          pins, enabled ? lna_enabled_table : lna_disabled_table);
+      if (enabled) {
+        // Restore RadioLib's standard RXEN/TXEN behavior exactly.
+        setRfSwitchPins(SX126X_RXEN, tx_en);
+      } else {
+        this->mod->setRfSwitchTable(pins, lna_disabled_table);
+      }
       return true;
     #else
       (void)enabled;

variants/lilygo_tbeam_1w/TBeam1WBoard.cpp

@@ -10,10 +10,8 @@ void TBeam1WBoard::begin() {
   radio_powered = true;
   delay(10);  // Allow radio to power up
 
-  // Keep the external LNA off until RadioLib deliberately enters RX. GPIO21
-  // is subsequently controlled by RadioLib's target-specific RF switch table.
-  pinMode(SX126X_RXEN, OUTPUT);
-  digitalWrite(SX126X_RXEN, LOW);
+  // GPIO21/CTRL is initialized by RadioLib with the normal RXEN mode table.
+  // Do not drive it independently during board startup.
 
   // Initialize LED
   pinMode(LED_PIN, OUTPUT);
@@ -71,6 +69,13 @@ void TBeam1WBoard::attachRadioDriver(CustomSX1262Wrapper* driver) {
 }
 
 bool TBeam1WBoard::setLoRaFemLnaEnabled(bool enable) {
+  // The normal/default ON state is already installed by radio.std_init().
+  // Avoid touching GPIO21 or reconfiguring the radio during boot unless the
+  // saved setting actually requests a different state.
+  if (lna_enabled == enable) {
+    return radio_driver != nullptr;
+  }
+
   if (radio_driver == nullptr || !radio_driver->setExternalRxLnaEnabled(enable)) {
     return false;
   }