Arduino Mega 2560 PWM Setting

Using Arduino Programming Questions
#1

Hi Everyone, i want to ask about PWM setting on Arduino Mega 2560.

Previously, i use this PWM setting for my Arduino Board that based on ATMEga 328p microcontroller.

TCCR0A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM00); 
  TCCR0B = _BV(CS00);
  TCCR1A = _BV(COM1A1) | _BV(COM1B1) | _BV(WGM10);
  TCCR1B = _BV(CS10);
  TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM20);
  TCCR2B = _BV(CS20);

Can i use same PWM setting in Arduino Mega 2560? Or the PWM setting on Arduino Mega 2560 is different?

#2

They won't be identical. You'll have to haul out the datasheet and do some reading.

#3

I have read the datasheet, they looks identical..

#4

mamette:

[quote author=Nick Gammon link=topic=178094.msg1320594#msg1320594 date=1374133292]
They won’t be identical. You’ll have to haul out the datasheet and do some reading.

I have read the datasheet, they looks identical…
[/quote]

Oh, sorry, they looks identical, but when i try with same code, it didn’t works well. I must have missed something…

#5

Which one? You seem to be using 3 timers there. Can you post a full sketch that demonstrates this?

#6

Yes, it is same, and it is works now. I forget to change PIN configuration before. This is the code:

  //ATMega 2560 Pin
  pinMode(13, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  /*
  //Atmega 328p Pin
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  */
  
#ifdef PWM_8KHZ_FAST
  TCCR0A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM01)| _BV(WGM10); 
  TCCR0B = _BV(CS01);
  TCCR1A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM10); 
  TCCR1B = _BV(WGM12) | _BV(CS11);
  TCCR2A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM21)| _BV(WGM20); 
  TCCR2B = _BV(CS21);
#endif

#ifdef PWM_32KHZ_PHASE
  TCCR0A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM00); 
  TCCR0B = _BV(CS00);
  TCCR1A = _BV(COM1A1) | _BV(COM1B1) | _BV(WGM10);
  TCCR1B = _BV(CS10);
  TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM20);
  TCCR2B = _BV(CS20);
#endif

#ifdef PWM_4KHZ_PHASE
  TCCR0A = _BV(COM0A1) | _BV(COM0B1) | _BV(WGM00); 
  TCCR0B = _BV(CS01);
  TCCR1A = _BV(COM1A1) | _BV(COM1B1) | _BV(WGM10);
  TCCR1B = _BV(CS11);
  TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM20);
  TCCR2B = _BV(CS21);
#endif

  TIMSK1 |= _BV(TOIE1);
  sei();

  // Enable Timer1 Interrupt for Motor Control
  OCR2A = 0;  //11  APIN
  OCR2B = 0;  //D3
  OCR1A = 0;  //D9  CPIN
  OCR1B = 0;  //D10 BPIN
  OCR0A = 0;  //D6
  OCR0B = 0;  //D5
#7

So, solved?

#8

Yes, it solved, Thank You..

#9