Code snippet - enabling PWM on an Arduino Mega

Projects Programming
1

I'm trying to enable fast PWM on two outputs on an Arduino Mega with a prescaler of 8 and a maximum count of 2000 (to get 1000 Hz).

My setup code for enabling this is as follows:

void setup()
{
	attachInterrupt(0,spinfun,RISING);
	pinMode(buttonApin, INPUT);
	pinMode(buttonBpin, INPUT);
	pinMode(feedPin1, OUTPUT);
	pinMode(feedPin2, OUTPUT);
	PRTIM3 = 0;	
	TCCR3A = _BV(COM3A1) | _BV(COM3B1) | _BV(COM3C1) | _BV(WGM31) | _BV(WGM30);
  	TCCR3B = _BV(WGM33) | _BV(WGM32)| _BV(CS31);
	OCR1A = 2000;
  	OCR1B = 0;
	OCR1C = 0;
	/*COM3A1 - 1 COM3A0 - 0 COM3B1 - 1 COM3B0 - 0 COM3C1 - 1 COM3C0 - 0 WGM31 - 1 WGM30 - 1
	ICNC3 - 0 (unused) ICES3 - 0 (unused) WGM33 - 1 WGM32 - 1 CS32 - 0 CS31 - 1 CS 30 - 0
	Fast PWM mode, prescaler of 8*/
}

Is this set up correctly? Which pins correspond to timer 3B and 3C on the Arduino Mega? I've tried googling but I can't figure out which ones are B and C.

2

OCR3A is connected to Pin 5
OCR3B is connected to Pin 2
OCR3C is connected to Pin 3

For similar answers you can see:

3

Thanks for that.

So I tested out the code and it's telling me that PRTIM3, TCCR3A, TCCR3B and OCR3C "was not defined in this scope". http://arduino.cc/en/Tutorial/SecretsOfArduinoPWM is the source for TCCR3A and TCCR3B. PRTIM3 is from the ATmega1280 data sheet and I figured that OCR3C would act for 3 C the way OCR3A and OCR3B work for 3 A and 3 B.

Do I need to include something to get this to work?

Whoops, need to switch to Mega board. >_>