From 93981f1fcbae458ced7cc2e0f5859e6db00caf9d Mon Sep 17 00:00:00 2001
From: Andrea Guglielmini <il.guglio95@gmail.com>
Date: Wed, 26 Feb 2020 15:54:41 +0100
Subject: [PATCH] [nRF24] Added "isCarrierDetected()"

---
 src/modules/nRF24/nRF24.cpp | 4 ++++
 src/modules/nRF24/nRF24.h   | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/src/modules/nRF24/nRF24.cpp b/src/modules/nRF24/nRF24.cpp
index 14f9a943..3bd01719 100644
--- a/src/modules/nRF24/nRF24.cpp
+++ b/src/modules/nRF24/nRF24.cpp
@@ -426,6 +426,10 @@ int16_t nRF24::getStatus(uint8_t mask) {
   return(_mod->SPIgetRegValue(NRF24_REG_STATUS) & mask);
 }
 
+bool nRF24::isCarrierDetected() {
+  return(_mod->SPIgetRegValue(NRF24_REG_RPD, 0,0)) == 1;
+}
+
 int16_t nRF24::setFrequencyDeviation(float freqDev) {
   // nRF24 is unable to set frequency deviation
   // this method is implemented only for PhysicalLayer compatibility
diff --git a/src/modules/nRF24/nRF24.h b/src/modules/nRF24/nRF24.h
index 6eafc342..4528c949 100644
--- a/src/modules/nRF24/nRF24.h
+++ b/src/modules/nRF24/nRF24.h
@@ -392,6 +392,13 @@ class nRF24: public PhysicalLayer {
     */
     int16_t getStatus(uint8_t mask = 0xFF);
 
+    /*!
+      \brief Checks if carrier was detected during last RX
+
+      \returns Whatever the carrier was above threshold.
+    */
+    bool isCarrierDetected();
+
     /*!
       \brief Dummy configuration method, to ensure PhysicalLayer compatibility.