From 7f4fcdecc00174c47136715258897bdd3e5b1183 Mon Sep 17 00:00:00 2001
From: Michal Skuta <michal.skuta@gmail.com>
Date: Wed, 11 Dec 2024 09:01:06 +0100
Subject: [PATCH] Testing experimental NEC-48 support

---
 src/libraries/Arduino-IRremote-mod/src/IRSend.hpp   |  6 +++++-
 .../Arduino-IRremote-mod/src/IRremoteInt.h          |  1 +
 src/libraries/Arduino-IRremote-mod/src/ir_NEC.hpp   | 13 +++++++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/libraries/Arduino-IRremote-mod/src/IRSend.hpp b/src/libraries/Arduino-IRremote-mod/src/IRSend.hpp
index 89265bd39..c77efeae5 100644
--- a/src/libraries/Arduino-IRremote-mod/src/IRSend.hpp
+++ b/src/libraries/Arduino-IRremote-mod/src/IRSend.hpp
@@ -194,7 +194,11 @@ size_t IRsend::write(IRData *aIRSendData, int_fast8_t aNumberOfRepeats) {
      * Order of protocols is in guessed relevance :-)
      */
     if (tProtocol == NEC) {
-        sendNEC(tAddress, tCommand, aNumberOfRepeats);
+        if (aIRSendData->numberOfBits == 48) {
+            sendNEC48(tAddress, tCommand, aNumberOfRepeats);
+        } else {
+            sendNEC(tAddress, tCommand, aNumberOfRepeats);
+        }
 
     } else if (tProtocol == SAMSUNG) {
         sendSamsung(tAddress, tCommand, aNumberOfRepeats);
diff --git a/src/libraries/Arduino-IRremote-mod/src/IRremoteInt.h b/src/libraries/Arduino-IRremote-mod/src/IRremoteInt.h
index 5590c6bf4..f7b7c2364 100644
--- a/src/libraries/Arduino-IRremote-mod/src/IRremoteInt.h
+++ b/src/libraries/Arduino-IRremote-mod/src/IRremoteInt.h
@@ -522,6 +522,7 @@ class IRsend {
     void sendNEC2(uint16_t aAddress, uint8_t aCommand, int_fast8_t aNumberOfRepeats);
     void sendNECRaw(uint32_t aRawData, int_fast8_t aNumberOfRepeats = NO_REPEATS);
     // NEC variants
+    void sendNEC48(uint16_t aAddress, uint16_t aCommand, int_fast8_t aNumberOfRepeats);
     void sendOnkyo(uint16_t aAddress, uint16_t aCommand, int_fast8_t aNumberOfRepeats);
     void sendApple(uint8_t aAddress, uint8_t aCommand, int_fast8_t aNumberOfRepeats);
 
diff --git a/src/libraries/Arduino-IRremote-mod/src/ir_NEC.hpp b/src/libraries/Arduino-IRremote-mod/src/ir_NEC.hpp
index d927be638..4205deafd 100644
--- a/src/libraries/Arduino-IRremote-mod/src/ir_NEC.hpp
+++ b/src/libraries/Arduino-IRremote-mod/src/ir_NEC.hpp
@@ -152,6 +152,19 @@ void IRsend::sendNEC2(uint16_t aAddress, uint8_t aCommand, int_fast8_t aNumberOf
     sendPulseDistanceWidth(&NEC2ProtocolConstants, computeNECRawDataAndChecksum(aAddress, aCommand), NEC_BITS, aNumberOfRepeats);
 }
 
+/*
+ * Experimental nec48 protocol based by:
+ * aCommand contains command and E variable
+ */
+void IRsend::sendNEC48(uint16_t aAddress, uint16_t aCommand, int_fast8_t aNumberOfRepeats) {
+
+    uint32_t necRawArray[2];
+    necRawArray[0] = computeNECRawDataAndChecksum(aAddress, aCommand >> 8);
+    uint8_t eValue = aCommand & 0x00FF;
+    necRawArray[1] = (uint32_t) ((~eValue) << 8) | eValue;
+    sendPulseDistanceWidthFromArray(&NECProtocolConstants, (uint32_t *) &necRawArray, NEC_BITS + 16, aNumberOfRepeats);
+}
+
 /*
  * Repeat commands should be sent in a 110 ms raster.
  * There is NO delay after the last sent repeat!