[SX128x] Added finishTransmit

examples/SX128x/SX128x_Transmit_Interrupt/SX128x_Transmit_Interrupt.ino

@@ -110,6 +110,11 @@ 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);
 

src/modules/SX128x/SX128x.cpp

@@ -300,20 +300,12 @@ int16_t SX128x::transmit(uint8_t* data, size_t len, uint8_t addr) {
   while(!_mod->digitalRead(_mod->getIrq())) {
     _mod->yield();
     if(_mod->micros() - start > timeout) {
-      clearIrqStatus();
-      standby();
+      finishTransmit();
       return(RADIOLIB_ERR_TX_TIMEOUT);
     }
   }
 
-  // clear interrupt flags
-  state = clearIrqStatus();
-  RADIOLIB_ASSERT(state);
-
-  // set mode to standby to disable transmitter
-  state = standby();
-
-  return(state);
+  return(finishTransmit());
 }
 
 int16_t SX128x::receive(uint8_t* data, size_t len) {
@@ -522,6 +514,14 @@ int16_t SX128x::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
   return(state);
 }
 
+int16_t SX128x::finishTransmit() {
+  // clear interrupt flags
+  clearIrqStatus();
+
+  // set mode to standby to disable transmitter/RF switch
+  return(standby());
+}
+
 int16_t SX128x::startReceive(uint16_t timeout) {
   // check active modem
   if(getPacketType() == RADIOLIB_SX128X_PACKET_TYPE_RANGING) {

src/modules/SX128x/SX128x.h

@@ -553,6 +553,13 @@ class SX128x: 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. DIO1 will be activated when full packet is received.