From b1412dedb832a44c88645a58adebb2384e0479d6 Mon Sep 17 00:00:00 2001
From: Silvano Seva <silseva@fastwebnet.it>
Date: Sat, 5 Dec 2020 14:19:07 +0100
Subject: [PATCH] Added 'OSIntEnter'/'OSIntExit' to MDx tone generator ISR

---
 platform/drivers/tones/toneGenerator_MDx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/platform/drivers/tones/toneGenerator_MDx.c b/platform/drivers/tones/toneGenerator_MDx.c
index eecbb3be..2930b992 100644
--- a/platform/drivers/tones/toneGenerator_MDx.c
+++ b/platform/drivers/tones/toneGenerator_MDx.c
@@ -21,6 +21,7 @@
 #include "toneGenerator_MDx.h"
 #include <hwconfig.h>
 #include <gpio.h>
+#include <os.h>
 
 /*
  * Sine table for PWM-based sinewave generation, containing 256 samples over one
@@ -62,6 +63,7 @@ uint32_t beepTimerCount = 0; /* Downcounter for timed "beep"                  */
 
 void __attribute__((used)) TIM3_IRQHandler()
 {
+    OSIntEnter();
     toneTableIndex += toneTableIncr;
     beepTableIndex += beepTableIncr;
 
@@ -83,6 +85,7 @@ void __attribute__((used)) TIM3_IRQHandler()
     {
         TIM3->CR1 &= ~TIM_CR1_CEN;
     }
+    OSIntExit();
 }
 
 void toneGen_init()