Phase shifted PWM signal

Projects General Guidance
2

You can't do this with pwmWrite.

You'll have to generate your signals explicitly pin by pin ,and use delays to get the timing.

eg here's some code I wrote to drive a 6-phase motor...

void setup() {
  pinMode (2, OUTPUT);
  pinMode (3, OUTPUT);
  pinMode (4, OUTPUT);
  pinMode (5, OUTPUT);
  pinMode (6, OUTPUT);
  pinMode (7, OUTPUT);
  noInterrupts() ;

}

const byte pulseDelay = 11;

const byte pattern[] = {0, 0b00011100, 0, 0b00111000, 0 , 0b01110000,
                        0, 0b11100000, 0, 0b11000100, 0, 0b10001100
                       };
byte i = 0;

void loop() {

  while (1) {
    PORTD = pattern[i++];
    if (i >= sizeof(pattern)) i = 0;
    delayMicroseconds(pulseDelay);
  }
}

I know it's clunky, but can't think of a better way offhand.

Note the use of noInterrupts() and the while(1) loop.

These disable the millis() and loop() background tasks - otherwise you get significant jitter.

Allan