From b48567722bd61a3c5bb0f0fccca84fdd4be45e84 Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Sat, 12 Aug 2023 18:40:38 +0200
Subject: [PATCH] [SX127x] Added method to get CAD result

---
 src/modules/SX127x/SX127x.cpp |  7 +++++++
 src/modules/SX127x/SX127x.h   | 12 +++++++++---
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/modules/SX127x/SX127x.cpp b/src/modules/SX127x/SX127x.cpp
index 3e5cccb4..6009b177 100644
--- a/src/modules/SX127x/SX127x.cpp
+++ b/src/modules/SX127x/SX127x.cpp
@@ -701,6 +701,13 @@ int16_t SX127x::startChannelScan() {
   return(state);
 }
 
+int16_t SX127x::getChannelScanResult() {
+  if(this->getIRQFlags() & RADIOLIB_SX127X_CLEAR_IRQ_FLAG_CAD_DETECTED == RADIOLIB_SX127X_CLEAR_IRQ_FLAG_CAD_DETECTED) {
+    return(RADIOLIB_PREAMBLE_DETECTED);
+  }
+  return(RADIOLIB_CHANNEL_FREE);
+}
+
 int16_t SX127x::setSyncWord(uint8_t syncWord) {
   // check active modem
   if(getActiveModem() != RADIOLIB_SX127X_LORA) {
diff --git a/src/modules/SX127x/SX127x.h b/src/modules/SX127x/SX127x.h
index b18f6791..6544016d 100644
--- a/src/modules/SX127x/SX127x.h
+++ b/src/modules/SX127x/SX127x.h
@@ -834,7 +834,13 @@ class SX127x: public PhysicalLayer {
       DIO1 will be activated if there's no preamble detected before timeout.
       \returns \ref status_codes
     */
-    int16_t startChannelScan();
+    int16_t startChannelScan() override;
+
+    /*!
+      \brief Read the channel scan result.
+      \returns \ref status_codes
+    */
+    int16_t getChannelScanResult() override;
 
     // configuration methods
 
@@ -1016,11 +1022,11 @@ class SX127x: public PhysicalLayer {
     int16_t variablePacketLengthMode(uint8_t maxLen = RADIOLIB_SX127X_MAX_PACKET_LENGTH_FSK);
 
     /*!
-      \brief Get expected time-on-air for a given size of payload
+      \brief Get expected time-on-air for a given size of payload.
       \param len Payload length in bytes.
       \returns Expected time-on-air in microseconds.
     */
-    uint32_t getTimeOnAir(size_t len);
+    uint32_t getTimeOnAir(size_t len) override;
 
     /*!
       \brief Enable CRC filtering and generation.