From 7e5b5bfcb5a1e9e501362084b25f2947e675e50c Mon Sep 17 00:00:00 2001
From: jipp <wolfgang.keller@wobilix.de>
Date: Mon, 13 Apr 2015 16:18:18 +0200
Subject: [PATCH] Update Tone.cpp

Tone.cpp stops compile when TCCR0A/TCCR0B defined and WGM01 not defined #2923
---
 cores/arduino/Tone.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cores/arduino/Tone.cpp b/cores/arduino/Tone.cpp
index 9bb6fe7..2f2fedf 100644
--- a/cores/arduino/Tone.cpp
+++ b/cores/arduino/Tone.cpp
@@ -30,6 +30,7 @@ Version Modified By Date     Comments
 0006    D Mellis    09/12/29 Replaced objects with functions
 0007    M Sproul    10/08/29 Changed #ifdefs from cpu to register
 0008    S Kanemoto  12/06/22 Fixed for Leonardo by @maris_HY
+0009    jipp        15/04/13 added additional define check #2923
 *************************************************/
 
 #include <avr/interrupt.h>
@@ -151,7 +152,7 @@ static int8_t toneBegin(uint8_t _pin)
     // whereas 16 bit timers are set to either ck/1 or ck/64 prescalar
     switch (_timer)
     {
-      #if defined(TCCR0A) && defined(TCCR0B)
+      #if defined(TCCR0A) && defined(TCCR0B) && defined(WGM01)
       case 0:
         // 8 bit timer
         TCCR0A = 0;