YEP, PEIE is on and always on because I have another interrupt working
ok(  TMR0... remember?..).

    I'm still looking for help but I have D/A routine working ok with
pooling aproach, testing C2OUT for end of convertion purpose. The interupt
solution would be much more elegant  :

    Thanks a lot for your help so far.

[ ]s
Horta


----- Original Message -----
From: Rudy Rudy <piclist@RUDYRUDY.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, January 28, 2002 1:32 PM
Subject: Re: [PIC]: 628 Comparators, they are devil's creatures or what?


> Horta,
>
> Have you enable PEIE ???  You also need to set PEIE bit (in addition to
> GIE, CMIE).  Look at spec sheet page 107.
>
> ------------------
> Rudy Rudy
> http://www.rudyrudy.com
> rudy@rudyrudy.com
> ------------------
>
>
> >      Hi fellows, I'm living in hell since I started to write a D/A
> interrupt
> > driven subroutine. Does anybody has any tip I don't have?
> >
> >  CMCON = 5    : using only 1 comparator
> >
> >  Things I observed:
> >
> >  1) if I disable comparators interrupt enable flag (CMIE) inside the
> >  interrupt routine, and enable it again later in the main program i do
> not
> >  get any further interrupt (duh?) (I have a bit being forced to one at
> the
> >  entry and to 0  at the int sub routine exit). In the other hand I
> have T0
> >  interrupt running absolutelly flawlessly refreshing my display
> >
> >  2) Probabily the comparators have no histeresis because I can observe
> until
> >  1 to 8 pulses in my spy bit( see above), it's not a problem because
> I'm
> >  concerned about the first one so I can disregard the others.
> >
> >      I'm relatively confident I'm taking care of  GIE, CMIE and CMIF
> bits, I
> >  have to deliver this software tomorrow morning but I'm almost giving
> up
> > does
> >  anybody have any advise????
> >
> >  Thanks in advance
> >  Horta
> >
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> >
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>
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