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TimerFour.cpp
38 lines (31 loc) · 1.36 KB
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TimerFour.cpp
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/*
* Interrupt and PWM utilities for 16 bit Timer3 on ATmega168/328
* Original code by Jesse Tane for http://labs.ideo.com August 2008
* Modified March 2009 by Jérôme Despatis and Jesse Tane for ATmega328 support
* Modified June 2009 by Michael Polli and Jesse Tane to fix a bug in setPeriod() which caused the timer to stop
* Modified Oct 2009 by Dan Clemens to work with timer3 of the ATMega1280 or Arduino Mega
* Modified April 2012 by Paul Stoffregen
* Modified again, June 2014 by Paul Stoffregen
* Modified March 2020 by Sam Verstraete, porting to Leonarde, Pro Micro or other ATMega32u4/ATMega16u4
*
* This is free software. You can redistribute it and/or modify it under
* the terms of Creative Commons Attribution 3.0 United States License.
* To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/us/
* or send a letter to Creative Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.
*
*/
#include "TimerFour.h"
TimerFour Timer4; // preinstantiate
unsigned int TimerFour::pwmPeriod = 0;
unsigned char TimerFour::clockSelectBits = 0;
void (*TimerFour::isrCallback)() = NULL;
// interrupt service routine that wraps a user defined function supplied by attachInterrupt
#if defined(__AVR__)
ISR(TIMER4_OVF_vect)
{
Timer4.isrCallback();
}
#endif
void TimerFour::isrDefaultUnused()
{
}