From 8a81a7c8279c2205d5cd4a2655238fc83f26f55f Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Sun, 18 Sep 2022 16:14:42 +0200
Subject: [PATCH] [RF69] Added finishTransmit

---
 .../RF69_Transmit_Interrupt.ino               |  5 +++++
 src/modules/RF69/RF69.cpp                     | 21 ++++++++++---------
 src/modules/RF69/RF69.h                       |  7 +++++++
 3 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/examples/RF69/RF69_Transmit_Interrupt/RF69_Transmit_Interrupt.ino b/examples/RF69/RF69_Transmit_Interrupt/RF69_Transmit_Interrupt.ino
index 6ae3fa1c..214474f9 100644
--- a/examples/RF69/RF69_Transmit_Interrupt/RF69_Transmit_Interrupt.ino
+++ b/examples/RF69/RF69_Transmit_Interrupt/RF69_Transmit_Interrupt.ino
@@ -128,6 +128,11 @@ void loop() {
 
     }
 
+    // clean up after transmission is finished
+    // this will ensure transmitter is disabled,
+    // RF switch is powered down etc.
+    radio.finishTransmit();
+
     // wait a second before transmitting again
     delay(1000);
 
diff --git a/src/modules/RF69/RF69.cpp b/src/modules/RF69/RF69.cpp
index 9867b576..699bf16d 100644
--- a/src/modules/RF69/RF69.cpp
+++ b/src/modules/RF69/RF69.cpp
@@ -125,19 +125,12 @@ int16_t RF69::transmit(uint8_t* data, size_t len, uint8_t addr) {
     _mod->yield();
 
     if(_mod->micros() - start > timeout) {
-      standby();
-      clearIRQFlags();
+      finishTransmit();
       return(RADIOLIB_ERR_TX_TIMEOUT);
     }
   }
-
-  // set mode to standby
-  standby();
-
-  // clear interrupt flags
-  clearIRQFlags();
-
-  return(RADIOLIB_ERR_NONE);
+  
+  return(finishTransmit());
 }
 
 int16_t RF69::receive(uint8_t* data, size_t len) {
@@ -442,6 +435,14 @@ int16_t RF69::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
   return(state);
 }
 
+int16_t RF69::finishTransmit() {
+  // clear interrupt flags
+  clearIRQFlags();
+
+  // set mode to standby to disable transmitter/RF switch
+  return(standby());
+}
+
 int16_t RF69::readData(uint8_t* data, size_t len) {
   // set mode to standby
   int16_t state = standby();
diff --git a/src/modules/RF69/RF69.h b/src/modules/RF69/RF69.h
index e1d3acf7..9233f57a 100644
--- a/src/modules/RF69/RF69.h
+++ b/src/modules/RF69/RF69.h
@@ -684,6 +684,13 @@ class RF69: public PhysicalLayer {
     */
     int16_t startTransmit(uint8_t* data, size_t len, uint8_t addr = 0) override;
 
+    /*!
+      \brief Clean up after transmission is done.
+
+      \returns \ref status_codes
+    */
+    int16_t finishTransmit() override;
+
     /*!
       \brief Interrupt-driven receive method. GDO0 will be activated when full packet is received.