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-rw-r--r--[-rwxr-xr-x]cores/arduino/Arduino.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index 3b9ccca..5596c14 100755..100644
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -15,6 +15,8 @@
extern "C"{
#endif
+void yield(void);
+
#define HIGH 0x1
#define LOW 0x0