1 Microsecond pulses

Other Hardware Sensors
13

@MarkT: This gives you 4.2us pulses, try it out. delayMicroseconds() waits at least 4us even if the parameter is less than 4.

But you can change the code to:

void pulse ()
{
  cli () ;
  PIND = 0x10 ;
  __asm__("nop\n\tnop\n\tnop\n\tnop\n\tnop\n\t");
  __asm__("nop\n\tnop\n\tnop\n\tnop\n\tnop\n\t");
  __asm__("nop\n\tnop\n\tnop\n\tnop\n\tnop\n\t");
  __asm__("nop\n\tnop\n\tnop\n\tnop\n\tnop\n\t");
  PIND = 0x10 ;
  sei () ;
}

This should result in a pulse of 1.2us.