Johan Rantala wrote:

> Yeah, you're so right ;)
> I'm using a 20Mhz external crystal.
> > At 20 MHz PIC16F877A you have only 40 instructions per=20
> > 10 microsecond period.
> > Not that many for C language.
> > Perhaps you should switch to:
> > - assembler;
> > - PIC18Fxxx;
> > - TIP #2 Measuring the Period of a Square Wave _with Averaging_

> So the CCP-module with my PIC16F877A
> is out of the question for measuring these kind of periods?=20
> Would it help to use every 16th rising edge?

Yes, the mentioned pattern from the mentioned .pdf is called:=20
"TIP #2 Measuring the Period of a Square Wave with Averaging"

"Pattern" =E2=80=93 based style of development makes developers speak one
language, saves a lot of time.

Best Regards,
Mike.

_______________________________________________
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist