From 6110d57c164cf4186e9d8c5f50eef0f3c0a08041 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Tue, 2 Aug 2016 19:13:04 -0700
Subject: [PATCH] Prevent the 'tone(f,d)' function from being interrupted
---
Marlin/buzzer.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Marlin/buzzer.h b/Marlin/buzzer.h
index 4548acfaa3..199d64e419 100644
--- a/Marlin/buzzer.h
+++ b/Marlin/buzzer.h
@@ -23,6 +23,7 @@
#ifndef __BUZZER_H__
#define __BUZZER_H__
+#include "types.h"
#include "fastio.h"
#include "circularqueue.h"
#include "temperature.h"
@@ -127,7 +128,9 @@ class Buzzer {
if (this->state.tone.frequency > 0) {
#if ENABLED(SPEAKER)
+ CRITICAL_SECTION_START;
::tone(BEEPER_PIN, this->state.tone.frequency, this->state.tone.duration);
+ CRITICAL_SECTION_END;
#else
this->on();
#endif
--
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