From c7baecc1f62e8a98ce1cc13a5a5df8359d83f54e Mon Sep 17 00:00:00 2001
From: Cristian Maglie <c.maglie@bug.st>
Date: Sat, 28 Sep 2013 21:11:33 +0200
Subject: Added pinToInterrupt() variant macro (Paul Stoffregen)

---
 variants/mega/pins_arduino.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'variants/mega/pins_arduino.h')

diff --git a/variants/mega/pins_arduino.h b/variants/mega/pins_arduino.h
index 5a9b4cb..47151d4 100644
--- a/variants/mega/pins_arduino.h
+++ b/variants/mega/pins_arduino.h
@@ -83,6 +83,8 @@ static const uint8_t A15 = 69;
                                 ( (((p) >= 62) && ((p) <= 69)) ? ((p) - 62) : \
                                 0 ) ) ) ) ) )
 
+#define digitalPinToInterrupt(p) ((p) == 2 ? 0 : ((p) == 3 ? 1 : ((p) >= 18 && (p) <= 21 ? 23 - (p) : -1)))
+
 #ifdef ARDUINO_MAIN
 
 const uint16_t PROGMEM port_to_mode_PGM[] = {
@@ -360,4 +362,4 @@ const uint8_t PROGMEM digital_pin_to_timer_PGM[] = {
 
 #endif
 
-#endif
\ No newline at end of file
+#endif
-- 
cgit v1.2.3-18-g5258