----- Original Message -----
From: "Bob Blick" <bobblick@COVAD.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, July 14, 2003 11:18 PM
Subject: Re: [PIC]: Multiple interrupt sources "style"


> On 14 Jul 2003 at 21:42, Bob Ammerman wrote:
> > You should only have to check the CCP2IF in your interrupt handler.
> Except the inputs are from a transducer and there will be stray
interrupts - I only want
> to capture when I have sent a signal and wait for the return.
>
> > Simply clear CCP2IE and CCP2IF in your mainline code when you don't want
to
> > use the capture.
> But that won't prevent CCP2IF from being set if an external event occurs,
and there
> are other interrupt sources (timer, for example) so I really need to
prevent CCP2IF
> from being set. So I really think I need to disable capture completely.

Oh, now I see what you mean....

In interrupt handler: only check CCP2IF

To turn off capture:

Disable capture
Clear CCP2IF

To turn on capture:

Enable capture mode desired.

Note: You can leave CCP2IE on all the time, I expect.



>
> > To reenable capturing set CCP2IF
> This is probably a typo and you meant CCP2IE.

Sure was :-(

> Thanks,
>
> Bob

Bob Ammerman
RAm Systems

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