FastPWMdac.cpp

/* 
FastPWMdac
For the output pins that can be used see: http://www.pjrc.com/teensy/td_libs_TimerOne.html
The library <TimerOne.h> has to be installed too
https://github.com/PaulStoffregen/TimerOne

Version 19-12-2015
*/

#include <TimerOne.h> // this library has to be installed
#include "FastPWMdac.h"

void FastPWMdac::init(byte _timer1PWMpin, byte resolution)
{ timer1PWMpin = _timer1PWMpin;
  if(resolution == 8) Timer1.initialize(32); 
  if(resolution == 10) Timer1.initialize(128); 
  Timer1.pwm(timer1PWMpin, 0); // dummy, required before setPwmDuty()
}

void FastPWMdac::analogWrite8bit(byte value8bit)
{ Timer1.setPwmDuty(timer1PWMpin, value8bit*4); // faster than pwm() 
}

void FastPWMdac::analogWrite10bit(int value10bit)
{ Timer1.setPwmDuty(timer1PWMpin, value10bit); // faster than pwm() 
}