From b1cab867ed9616563260f8cd96c995eb1082ef03 Mon Sep 17 00:00:00 2001
From: Holger Eiboeck <holger@eiboeck.de>
Date: Mon, 10 Aug 2026 11:01:51 +0200
Subject: [PATCH] =?UTF-8?q?Place=20=20=20=20=20=E2=94=82=20=E2=94=82=20ESP?=
 =?UTF-8?q?8266=20ISR=20paths=20in=20IRAM?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/ClickEncoder.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/ClickEncoder.cpp b/src/ClickEncoder.cpp
index 3684db3..e6660da 100644
--- a/src/ClickEncoder.cpp
+++ b/src/ClickEncoder.cpp
@@ -10,6 +10,12 @@
 // ----------------------------------------------------------------------------
 
 #include "ClickEncoder.h"
+#if defined(ESP8266)
+#define CLICK_ENCODER_ISR_ATTR IRAM_ATTR
+#else
+#define CLICK_ENCODER_ISR_ATTR
+#endif
+
 
 // ----------------------------------------------------------------------------
 // Button configuration (values for 1ms timer service calls)
@@ -112,7 +118,7 @@ AnalogButton::AnalogButton(int8_t BTN, int16_t rangeLow, int16_t rangeHigh) : Cl
 // ----------------------------------------------------------------------------
 // call this every 1 millisecond via timer ISR
 //
-void ClickEncoder::service(void)
+void CLICK_ENCODER_ISR_ATTR ClickEncoder::service(void)
 {
   bool moved = false;
 
@@ -299,7 +305,7 @@ ClickEncoder::Button ClickEncoder::getButton(void)
   return ret;
 }
 
-bool ClickEncoder::getPinState() {
+bool CLICK_ENCODER_ISR_ATTR ClickEncoder::getPinState() {
   bool pinState;
   if (analogInput) {
     int16_t pinValue = analogRead(pinBTN);
@@ -311,3 +317,4 @@ bool ClickEncoder::getPinState() {
 }
 
 #endif
+#undef CLICK_ENCODER_ISR_ATTR