On 2/20/2012 12:33 PM, KPL wrote:
> Oh, well.
>
> I will never ever buy cheap crystals again.
> I will never ever buy cheap crystals again.
> I will never ever buy cheap crystals again.
> I swear.
> Seems like my 20MHz crystal was not 20MHz at all. With a different
> crystal it counts correctly.
>

One of the first test I do on every setup is to set the timer to toggle=20
a pin at 500Khz and I measure that with a frequency counter before I=20
start to write code specific to the chip. That lets me know that=20
everything is running correctly clock wise . I have had issues before=20
that were crystal related and pic related where either one was at fault.=20
Especially useful for when using the internal clock of the pic chips=20
that have them . I used to assume that the internal clock is what it=20
says but depending on the application can be a source of problems if you=20
don't check it first.

Mark

--=20
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