From a2eb2d7aa5d673ad6af77ef841a737ffd2b950f4 Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Wed, 29 Dec 2021 08:49:44 +0100
Subject: [PATCH] [Si443x] Added ESP8266/ESP32 IRAM attribute (#434)

---
 .../Si443x_Receive_Interrupt/Si443x_Receive_Interrupt.ino      | 3 +++
 .../Si443x_Transmit_Interrupt/Si443x_Transmit_Interrupt.ino    | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/examples/Si443x/Si443x_Receive_Interrupt/Si443x_Receive_Interrupt.ino b/examples/Si443x/Si443x_Receive_Interrupt/Si443x_Receive_Interrupt.ino
index 16c1af41..061ee094 100644
--- a/examples/Si443x/Si443x_Receive_Interrupt/Si443x_Receive_Interrupt.ino
+++ b/examples/Si443x/Si443x_Receive_Interrupt/Si443x_Receive_Interrupt.ino
@@ -76,6 +76,9 @@ volatile bool enableInterrupt = true;
 // is received by the module
 // IMPORTANT: this function MUST be 'void' type
 //            and MUST NOT have any arguments!
+#if defined(ESP8266) || defined(ESP32)
+  ICACHE_RAM_ATTR
+#endif
 void setFlag(void) {
   // check if the interrupt is enabled
   if(!enableInterrupt) {
diff --git a/examples/Si443x/Si443x_Transmit_Interrupt/Si443x_Transmit_Interrupt.ino b/examples/Si443x/Si443x_Transmit_Interrupt/Si443x_Transmit_Interrupt.ino
index 4703233a..7f6877c6 100644
--- a/examples/Si443x/Si443x_Transmit_Interrupt/Si443x_Transmit_Interrupt.ino
+++ b/examples/Si443x/Si443x_Transmit_Interrupt/Si443x_Transmit_Interrupt.ino
@@ -75,6 +75,9 @@ volatile bool enableInterrupt = true;
 // is transmitted by the module
 // IMPORTANT: this function MUST be 'void' type
 //            and MUST NOT have any arguments!
+#if defined(ESP8266) || defined(ESP32)
+  ICACHE_RAM_ATTR
+#endif
 void setFlag(void) {
   // check if the interrupt is enabled
   if(!enableInterrupt) {