At 03:36 PM 1/1/01 +1100, Roman Black wrote:
>Since your code seems simple I guess you may have a
>hardware problem! If I understand your circuit properly
>you are using one pin to ground the C through R, then
>the other pin to sense the voltage. And the third pin
>hopefully floats so it doesn't affect anything.

The third is set as input, so that would be the general expectation.

I've been away from pics for a while, so I expect that I'm missing
something peculiar to pic port pins.


>Since it is not detecting low, my guess is the voltage
>on the capsense pin is not going below the bottom
>threshold. This could be caused by three things;

I hear you, but Mr Scope says otherwise. It droops to zero, and sits there.
I'm trying various perversions to diagnose where it's falling apart,
without butchering the routine too much.

>If you capsense is schmitt input that might explain
>it?? What value is your discharge resistor??

1k-10k for a 0.1uF cap.
I generally avoid high impedances where practical.

Happy new year :)


--
Where's dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body