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-rwxr-xr-xcores/arduino/Arduino.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index ebd374a..c05b919 100755
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -45,7 +45,7 @@ extern "C"{
#define EXTERNAL 1
#define INTERNAL 2
#else
-#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
+#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1284P__)
#define INTERNAL1V1 2
#define INTERNAL2V56 3
#else
@@ -211,4 +211,4 @@ long map(long, long, long, long, long);
#include "pins_arduino.h"
-#endif \ No newline at end of file
+#endif