From b21ffda1b618da7d2e052d9d774703613de7013a Mon Sep 17 00:00:00 2001
From: Hugo Visser <hugo@littlerobots.nl>
Date: Sun, 18 Aug 2019 12:04:36 +0200
Subject: [PATCH] Handle interrupt correctly on ESP8266

For ESP8266 the interrupt handler must be in IRAM.
Newer Arduino versions will now crash if this not the case.

See https://forum.arduino.cc/index.php?topic=616264.msg4182494#msg4182494
---
 RFControl.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/RFControl.cpp b/RFControl.cpp
index 2bb46e4..0e3f1ea 100644
--- a/RFControl.cpp
+++ b/RFControl.cpp
@@ -33,7 +33,11 @@ bool data1_ready = false;
 bool data2_ready = false;
 bool skip = false;
 bool new_duration = false;
+#ifdef ICACHE_RAM_ATTR
+void ICACHE_RAM_ATTR handleInterrupt();
+#else
 void handleInterrupt();
+#endif
 
 unsigned int RFControl::getPulseLengthDivider() {
   return PULSE_LENGTH_DIVIDER;