From 07ef56e3cbd6ffc9b083e84777d2ec4186514202 Mon Sep 17 00:00:00 2001
From: Cristian Maglie <c.maglie@bug.st>
Date: Mon, 30 Jun 2014 18:24:08 +0200
Subject: Backported digitalPinToInterrupt macro from IDE 1.5.x

---
 variants/mega/pins_arduino.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'variants/mega')

diff --git a/variants/mega/pins_arduino.h b/variants/mega/pins_arduino.h
index 9991a21..a80991b 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) : NOT_AN_INTERRUPT)))
+
 #ifdef ARDUINO_MAIN
 
 const uint16_t PROGMEM port_to_mode_PGM[] = {
-- 
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