From 58ca3be1ecec4935e2518a9c3d5c4eed9d2a15dc Mon Sep 17 00:00:00 2001
From: Karl Andersson <karl@iaccess.se>
Date: Thu, 26 Apr 2018 21:31:01 +0200
Subject: [PATCH] delayMicroseconds() cannot be called in critical section
 (#10535)

on the STM32 platform
---
 Marlin/src/feature/Max7219_Debug_LEDs.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/src/feature/Max7219_Debug_LEDs.cpp b/Marlin/src/feature/Max7219_Debug_LEDs.cpp
index 03752a3d1c..f7e46e5842 100644
--- a/Marlin/src/feature/Max7219_Debug_LEDs.cpp
+++ b/Marlin/src/feature/Max7219_Debug_LEDs.cpp
@@ -64,7 +64,7 @@
 static uint8_t LEDs[8] = { 0 };
 
 #ifdef CPU_32_BIT
-  #define MS_DELAY() delayMicroseconds(7)  // 32-bit processors need a delay to stabilize the signal
+void MS_DELAY() { DELAY_1US; }  // 32-bit processors need a delay to stabilize the signal
 #else
   #define MS_DELAY() DELAY_3_NOP
 #endif