From 56ddc4637de1b8b0e21840519ed0b94966395ff5 Mon Sep 17 00:00:00 2001
From: Zach Eveland <zeveland@blacklabel-development.com>
Date: Thu, 19 Apr 2012 15:46:32 -0400
Subject: [PATCH] bugfix for boards with a timer 4 but no channel D

compilation failed for Mega because the COM4D1 and OCR4D registers are defined for 32U4 but not for Mega
---
 cores/arduino/wiring_analog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/arduino/wiring_analog.c b/cores/arduino/wiring_analog.c
index 40a3363..c06cad4 100644
--- a/cores/arduino/wiring_analog.c
+++ b/cores/arduino/wiring_analog.c
@@ -230,7 +230,7 @@ void analogWrite(uint8_t pin, int val)
 				break;
 			#endif
 				
-			#if defined(TCCR4C)
+			#if defined(TCCR4C) && defined(COM4D1)
 			case TIMER4D:				
 				// connect pwm to pin on timer 4, channel D
 				sbi(TCCR4C, COM4D1);