From 9dde85598bf9e3ab8fbfa4549646c7fe4f2ffdae Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Sat, 8 Apr 2023 21:44:51 +0200
Subject: [PATCH] [SX126x] Added IQ inversion

---
 src/modules/SX126x/SX126x.cpp | 13 +++++++++++++
 src/modules/SX126x/SX126x.h   |  9 +++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/modules/SX126x/SX126x.cpp b/src/modules/SX126x/SX126x.cpp
index e00bea5e..ab308961 100644
--- a/src/modules/SX126x/SX126x.cpp
+++ b/src/modules/SX126x/SX126x.cpp
@@ -1419,6 +1419,19 @@ uint8_t SX126x::randomByte() {
   return(randByte);
 }
 
+int16_t SX126x::invertIQ(bool invertIQ) {
+  if(getPacketType() != RADIOLIB_SX126X_PACKET_TYPE_LORA) {
+    return(RADIOLIB_ERR_WRONG_MODEM);
+  }
+
+  uint8_t invert = RADIOLIB_SX126X_LORA_IQ_STANDARD;
+  if(invertIQ) {
+    invert = RADIOLIB_SX126X_LORA_IQ_INVERTED;
+  }
+
+  return(setPacketParams(_preambleLength, _crcType, _implicitLen, _headerType, invert));
+}
+
 #if !defined(RADIOLIB_EXCLUDE_DIRECT_RECEIVE)
 void SX126x::setDirectAction(void (*func)(void)) {
   setDio1Action(func);
diff --git a/src/modules/SX126x/SX126x.h b/src/modules/SX126x/SX126x.h
index a19c7248..51a5b4c6 100644
--- a/src/modules/SX126x/SX126x.h
+++ b/src/modules/SX126x/SX126x.h
@@ -1059,6 +1059,15 @@ class SX126x: public PhysicalLayer {
     */
     uint8_t randomByte();
 
+    /*!
+      \brief Enable/disable inversion of the I and Q signals
+
+      \param invertIQ QI inversion enabled (true) or disabled (false);
+
+      \returns \ref status_codes
+    */
+    int16_t invertIQ(bool invertIQ);
+
     #if !defined(RADIOLIB_EXCLUDE_DIRECT_RECEIVE)
     /*!
       \brief Set interrupt service routine function to call when data bit is receveid in direct mode.