From 0f287a53e7013c1e9183e6c38a8e2259e5f7d6b1 Mon Sep 17 00:00:00 2001
From: jgromes <jgromes@users.noreply.github.com>
Date: Thu, 18 Jun 2020 16:32:30 +0200
Subject: [PATCH] [RF69] Implemented RF switch control

---
 src/modules/RF69/RF69.cpp | 10 ++++++++++
 src/modules/RF69/RF69.h   | 10 ++++++++++
 2 files changed, 20 insertions(+)

diff --git a/src/modules/RF69/RF69.cpp b/src/modules/RF69/RF69.cpp
index 856101f2..6b925eb6 100644
--- a/src/modules/RF69/RF69.cpp
+++ b/src/modules/RF69/RF69.cpp
@@ -238,6 +238,9 @@ int16_t RF69::startReceive() {
   // clear interrupt flags
   clearIRQFlags();
 
+  // set RF switch (if present)
+  _mod->setRfSwitchState(false);
+
   // set mode to receive
   state = _mod->SPIsetRegValue(RF69_REG_OCP, RF69_OCP_ON | RF69_OCP_TRIM);
   state |= _mod->SPIsetRegValue(RF69_REG_TEST_PA1, RF69_PA1_NORMAL);
@@ -314,6 +317,9 @@ int16_t RF69::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
     RADIOLIB_ASSERT(state);
   }
 
+  // set RF switch (if present)
+  _mod->setRfSwitchState(true);
+
   // set mode to transmit
   state = setMode(RF69_TX);
 
@@ -730,6 +736,10 @@ float RF69::getRSSI() {
   return(-1.0 * (_mod->SPIgetRegValue(RF69_REG_RSSI_VALUE)/2.0));
 }
 
+void RF69::setRfSwitchPins(RADIOLIB_PIN_TYPE rxEn, RADIOLIB_PIN_TYPE txEn) {
+  _mod->setRfSwitchPins(rxEn, txEn);
+}
+
 int16_t RF69::config() {
   int16_t state = ERR_NONE;
 
diff --git a/src/modules/RF69/RF69.h b/src/modules/RF69/RF69.h
index 18aa8df4..fa8362a5 100644
--- a/src/modules/RF69/RF69.h
+++ b/src/modules/RF69/RF69.h
@@ -795,6 +795,16 @@ class RF69: public PhysicalLayer {
     */
     float getRSSI();
 
+    /*!
+      \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);
+
 #ifndef RADIOLIB_GODMODE
   protected:
 #endif