On Friday, September 09, 2011 2:25 PM, "Isaac Marino Bavaresco"  wrote:
> The OP could also do the following:
>=20
> Using a single timer, in the main loop set it for the first servo pulse
> width and set the corresponding pin high.
> When the timer interrupt occurs, inside the ISR clear the first servo
> pin, set the next servo pin to one and program this servo's pulse width,
> and so on for the remaining servos. Turn off the pin of servo 'n', turn
> on the pin of servo 'n+1' and set the timer to interrupt after the pulse
> width of servo 'n+1'.
> After the last servo is served set the timer to interrupt after the
> remaining time to complete the 20ms frame, and then start over, but this
> time the first servo pin is set by the ISR.

Won't you get some jitter this way?

When I use CCP Compare for the pulse, and freerunning a timer interrupt
for the repeat, it is very stable.

Friendly regards,

Bob

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