Added external

RF switch control base

keywords.txt

@@ -127,6 +127,7 @@ setEncoding	KEYWORD2
 getIRQFlags	KEYWORD2
 getModemStatus	KEYWORD2
 getTempRaw	KEYWORD2
+setRfSwitchPins	KEYWORD2
 
 # RF69-specific
 setAESKey	KEYWORD2

src/Module.cpp

@@ -314,3 +314,27 @@ void Module::noTone(RADIOLIB_PIN_TYPE pin) {
   }
   #endif
 }
+
+void Module::setRfSwitchPins(RADIOLIB_PIN_TYPE rxEn, RADIOLIB_PIN_TYPE txEn) {
+  _useRfSwitch = true;
+  _rxEn = rxEn;
+  _txEn = txEn;
+  Module::pinMode(rxEn, OUTPUT);
+  Module::pinMode(txEn, OUTPUT);
+}
+
+void Module::setRfSwitchState(bool tx) {
+  // check RF switch control is enabled
+  if(!_useRfSwitch) {
+    return;
+  }
+
+  // set pins
+  if(tx) {
+    Module::digitalWrite(_rxEn, LOW);
+    Module::digitalWrite(_txEn, HIGH);
+  } else {
+    Module::digitalWrite(_rxEn, HIGH);
+    Module::digitalWrite(_txEn, LOW);
+  }
+}

src/Module.h

@@ -386,6 +386,23 @@ class Module {
     */
     static void noTone(RADIOLIB_PIN_TYPE pin);
 
+    /*!
+      \brief Some modules contain external RF switch controlled by two pins. This function gives RadioLib control over those two pins to automatically switch Rx and Tx state.
+      When using automatic RF switch control, DO NOT change the pin mode of rxEn or txEn from Arduino sketch!
+
+      \param rxEn RX enable pin.
+
+      \param txEn TX enable pin.
+    */
+    void setRfSwitchPins(RADIOLIB_PIN_TYPE rxEn, RADIOLIB_PIN_TYPE txEn);
+
+    /*!
+      \brief Set RF switch state.
+
+      \param tx True to set RF switch to Tx, false to set switch to Rx.
+    */
+    void setRfSwitchState(bool tx);
+
 #ifndef RADIOLIB_GODMODE
   private:
 #endif
@@ -399,6 +416,9 @@ class Module {
     SPIClass* _spi;
     SPISettings _spiSettings;
 
+    bool _useRfSwitch = false;
+    RADIOLIB_PIN_TYPE _rxEn, _txEn;
+
     uint32_t _ATtimeout = 15000;
 };