From 5a6dafaf8cda2cf6f8149baea989646b05092f12 Mon Sep 17 00:00:00 2001
From: Claudio Indellicati <c.indellicati@arduino.cc>
Date: Wed, 15 Apr 2015 18:00:12 +0200
Subject: [PATCH] Fixed default maximum frequency calculation in Tone.cpp.

---
 cores/arduino/Tone.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/arduino/Tone.cpp b/cores/arduino/Tone.cpp
index 739eab83..c670626b 100644
--- a/cores/arduino/Tone.cpp
+++ b/cores/arduino/Tone.cpp
@@ -21,7 +21,7 @@
 
 #define WAIT_TC16_REGS_SYNC(x) while(x->COUNT16.STATUS.bit.SYNCBUSY);
 
-uint32_t toneMaxFrequency = SystemCoreClock / 2;
+uint32_t toneMaxFrequency = F_CPU / 2;
 uint32_t lastOutputPin = 0xFFFFFFFF;
 
 volatile uint32_t *portToggleRegister;
-- 
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