PWM on dspic30F

[nostep]

I have PWM working on a dsPic30F6012A. Is there a way to not get the first startup pulse? At each bootup there is a short full-on pulse until the PWM gets into sink and starts back at 0 PWM.

Here's some pseudo code.

10MHZ crystal on XLTx4 (40,000,000 clock)

main()
{
. . .

setup_timer3(TMR_INTERNAL|TMR_DIV_BY_64,780); // 200HZ PWM
setup_pwm_duty(6,0); // using OC6 = pin_D5
setup_compare(6,COMPARE_PWM|COMPARE_TIMER3); // using OC6 = Pin_RD5

. . .

while(1);
}

With the above I get a 200us pulse at bootup, then it goes to zero like it's supposed to while I wait to use the channel. I've tried messing with the timer to see if I could trick it into staying off, but nothing seems to work.

Thanks.

[Ttelmah]

Try not enabling the timer, till after you have setup the PWM. This is what the MicroChip data sheet suggests.

Best Wishes

[nostep]

I think I get the pulse when I do this line:

setup_compare(6,COMPARE_PWM|COMPARE_TIMER3); // using OC6 = Pin_RD5

I don't know what else to try.