1 files changed, 2 insertions, 0 deletions
diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index d4a22a6..f03c2bc 100755
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -34,6 +34,8 @@
 extern "C"{
 #endif
 
+void yield(void);
+
 #define HIGH 0x1
 #define LOW  0x0