Update Timer_ISR.ino

diff --git a/Timer_ISR/Timer_ISR.ino b/Timer_ISR/Timer_ISR.ino
index 1517d2ec7beb1862652c0de5df53f7b0cca1a097..8d11733483f74b8d7b0607a3e752dd56d39c72c4 100644 (file)
--- a/Timer_ISR/Timer_ISR.ino
+++ b/Timer_ISR/Timer_ISR.ino
@@ -1,4 +1,4 @@
-boolean toggle1 = 0;
+volatile boolean toggle1 = 0;
 
 void setup() {
   pinMode(13, OUTPUT);