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-rw-r--r--cores/arduino/Tone.cpp3
1 files changed, 2 insertions, 1 deletions
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;