From bf32958ccd9df0b476c73050b02bfb3d5b7cd3a1 Mon Sep 17 00:00:00 2001
From: AlbertEEWork <albertvzsmail@gmail.com>
Date: Tue, 27 Jan 2026 11:47:21 +0200
Subject: [PATCH] Removed this to enable PC Interupt for PCINT6 and & the Stop
 en reset buttons

---
 DEBUG.md                         | 21 +++++++++++++++++++++
 src/PinChangeInterruptSettings.h | 29 +++++++++++++++++++++++------
 2 files changed, 44 insertions(+), 6 deletions(-)
 create mode 100644 DEBUG.md

diff --git a/DEBUG.md b/DEBUG.md
new file mode 100644
index 0000000..8843fc9
--- /dev/null
+++ b/DEBUG.md
@@ -0,0 +1,21 @@
+PinChangeInterrupt library debug
+
+This library already supports a local debug macro in `PinChangeInterruptSettings.h`:
+
+- `__PCINT_DEBUG__` (default 0) controls `PCINT_DEBUG_PRINT(...)` which prints
+  with `Serial.println(F("..."))` when enabled.
+
+Examples to enable:
+- platformio.ini (per-environment):
+
+  [env:program_DiamexISP]
+  build_flags = -D__PCINT_DEBUG__=1
+
+- Or define before including the library headers:
+
+  #define __PCINT_DEBUG__ 1
+  #include <PinChangeInterrupt.h>
+
+Notes:
+- Debug prints use `F("string")` to keep strings in flash (saves RAM).
+- When disabled, `PCINT_DEBUG_PRINT(...)` expands to nothing.
diff --git a/src/PinChangeInterruptSettings.h b/src/PinChangeInterruptSettings.h
index 8f8b07b..d48cdfb 100644
--- a/src/PinChangeInterruptSettings.h
+++ b/src/PinChangeInterruptSettings.h
@@ -24,6 +24,23 @@ THE SOFTWARE.
 // include guard
 #pragma once
 
+// Per-library debug control for PinChangeInterrupt.
+// Set __PCINT_DEBUG__ to 1 to enable lightweight debug prints for this library.
+// We use PCINT_DEBUG_PRINT(...) so other libraries are unaffected.
+#ifndef __PCINT_DEBUG__
+#define __PCINT_DEBUG__ 0
+#endif
+
+#if __PCINT_DEBUG__
+#ifdef ARDUINO
+#define PCINT_DEBUG_PRINT(...) Serial.println(F(__VA_ARGS__))
+#else
+#define PCINT_DEBUG_PRINT(...)
+#endif
+#else
+#define PCINT_DEBUG_PRINT(...)
+#endif
+
 //================================================================================
 // General Settings
 //================================================================================
@@ -120,12 +137,12 @@ PCINT_CALLBACK(3, 19); /* Pin Interrupt 1 */
 #endif
 
 // deactivate crystal and reset pins by default
-#if defined(PCINT_ENABLE_PCINT6)
-#undef PCINT_ENABLE_PCINT6 // crystal
-#endif
-#if defined(PCINT_ENABLE_PCINT7)
-#undef PCINT_ENABLE_PCINT7 // crystal
-#endif
+// #if defined(PCINT_ENABLE_PCINT6)
+// #undef PCINT_ENABLE_PCINT6 // crystal
+// #endif
+// #if defined(PCINT_ENABLE_PCINT7)
+// #undef PCINT_ENABLE_PCINT7 // crystal
+// #endif
 #if defined(PCINT_ENABLE_PCINT14)
 #undef PCINT_ENABLE_PCINT14 // reset
 #endif