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/leonardo/pins_arduino.h | 2 ++
 1 file changed, 2 insertions(+)

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

diff --git a/variants/leonardo/pins_arduino.h b/variants/leonardo/pins_arduino.h
index 2c7f837..a0e1594 100644
--- a/variants/leonardo/pins_arduino.h
+++ b/variants/leonardo/pins_arduino.h
@@ -132,6 +132,8 @@ static const uint8_t A11 = 29;	// D12
 extern const uint8_t PROGMEM analog_pin_to_channel_PGM[];
 #define analogPinToChannel(P)  ( pgm_read_byte( analog_pin_to_channel_PGM + (P) ) )
 
+#define digitalPinToInterrupt(p) ((p) == 0 ? 2 : ((p) == 1 ? 3 : ((p) == 2 ? 1 : ((p) == 3 ? 0 : ((p) == 7 ? 4 : -1)))))
+
 #ifdef ARDUINO_MAIN
 
 // On the Arduino board, digital pins are also used
-- 
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