From c15afa981958e11aa87dacf872f7e3d6d45662b3 Mon Sep 17 00:00:00 2001
From: Nickie Deuxyeux <nikolay@dvoeglazov.ru>
Date: Sun, 26 Apr 2026 13:24:15 +0300
Subject: [PATCH] Add TXEN pin control

---
 sx126x.cpp | 11 +++++++++--
 sx126x.h   |  3 ++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/sx126x.cpp b/sx126x.cpp
index 7e85055..2a46876 100755
--- a/sx126x.cpp
+++ b/sx126x.cpp
@@ -102,7 +102,7 @@ extern SPIClass SPI;
 
 sx126x::sx126x() :
   _spiSettings(16E6, MSBFIRST, SPI_MODE0),
-  _ss(LORA_DEFAULT_SS_PIN), _reset(LORA_DEFAULT_RESET_PIN), _dio0(LORA_DEFAULT_DIO0_PIN), _busy(LORA_DEFAULT_BUSY_PIN), _rxen(LORA_DEFAULT_RXEN_PIN),
+  _ss(LORA_DEFAULT_SS_PIN), _reset(LORA_DEFAULT_RESET_PIN), _dio0(LORA_DEFAULT_DIO0_PIN), _busy(LORA_DEFAULT_BUSY_PIN), _rxen(LORA_DEFAULT_RXEN_PIN), _txen(LORA_DEFAULT_TXEN_PIN),
   _frequency(0),
   _txp(0),
   _sf(0x07),
@@ -184,6 +184,7 @@ uint8_t ISR_VECT sx126x::singleTransfer(uint8_t opcode, uint16_t address, uint8_
 
 void sx126x::rxAntEnable() {
   if (_rxen != -1) { digitalWrite(_rxen, HIGH); }
+  if (_txen != -1) { digitalWrite(_txen, LOW); }
 }
 
 void sx126x::loraMode() {
@@ -316,6 +317,8 @@ int sx126x::begin(long frequency) {
   if (_busy != -1) { pinMode(_busy, INPUT); }
   if (!_preinit_done) { if (!preInit()) { return false; } }
   if (_rxen != -1) { pinMode(_rxen, OUTPUT); }
+  if (_txen != -1) { pinMode(_txen, OUTPUT); }
+
 
   calibrate();
   calibrate_image(frequency);
@@ -387,6 +390,7 @@ int sx126x::beginPacket(int implicitHeader) {
       // radio is powered up.
     #endif
   #endif
+  if (_txen != -1) { digitalWrite(_txen, HIGH); } //Set TXen high when transmitting
 
   standby();
   if (implicitHeader) { implicitHeaderMode(); }
@@ -401,6 +405,8 @@ int sx126x::beginPacket(int implicitHeader) {
 
 int sx126x::endPacket() {
   setPacketParams(_preambleLength, _implicitHeaderMode, _payloadLength, _crcMode);
+  if (_rxen != -1) { digitalWrite(_rxen, LOW); } //Set RXen low when transmitting
+
   uint8_t timeout[3] = {0}; // Put in single TX mode
   executeOpcode(OP_TX_6X, timeout, 3);
 
@@ -772,12 +778,13 @@ void sx126x::setSyncWord(uint16_t sw) {
   writeRegister(REG_SYNC_WORD_LSB_6X, 0x24);
 }
 
-void sx126x::setPins(int ss, int reset, int dio0, int busy, int rxen) {
+void sx126x::setPins(int ss, int reset, int dio0, int busy, int rxen, int txen) {
   _ss = ss;
   _reset = reset;
   _dio0 = dio0;
   _busy = busy;
   _rxen = rxen;
+  _txen = txen;
 }
 
 void sx126x::dumpRegisters(Stream& out) {
diff --git a/sx126x.h b/sx126x.h
index 7d35227..9685094 100755
--- a/sx126x.h
+++ b/sx126x.h
@@ -92,7 +92,7 @@ public:
 
   byte random();
 
-  void setPins(int ss = LORA_DEFAULT_SS_PIN, int reset = LORA_DEFAULT_RESET_PIN, int dio0 = LORA_DEFAULT_DIO0_PIN, int busy = LORA_DEFAULT_BUSY_PIN, int rxen = LORA_DEFAULT_RXEN_PIN);
+  void setPins(int ss = LORA_DEFAULT_SS_PIN, int reset = LORA_DEFAULT_RESET_PIN, int dio0 = LORA_DEFAULT_DIO0_PIN, int busy = LORA_DEFAULT_BUSY_PIN, int rxen = LORA_DEFAULT_RXEN_PIN, int txen = LORA_DEFAULT_TXEN_PIN);
   void setSPIFrequency(uint32_t frequency);
 
   void dumpRegisters(Stream& out);
@@ -125,6 +125,7 @@ private:
   int _reset;
   int _dio0;
   int _rxen;
+  int _txen;
   int _busy;
   long _frequency;
   int _txp;