No vectored ints on that one?


On Thu, Jul 11, 2013 at 1:43 PM, Neil <picdude3@narwani.org> wrote:

> And there it is... the big Doh!!!!
>
> You're right -- RC1IF is set when a char comes in, and one of my other
> timers calls the interrupt for other reasons.  I guess I could move
> the serial-receive interrupt to after all the other interrupts are
> checked, or better, change my interrupt to get the enable bit like
> this instead...
>
> void high_isr (void)
> {
>         if ((PIR1bits.RC1IF) && (PIEbits.RC1IE))
>         {
>                 ...
>
>
> See, I knew it had to be me! :)
>
> Thanks,
> -Neil.
>
>
>
>
> Quoting Nicola Perotto <nicola@nicolaperotto.it>:
>
> > Hi Neil,
> >
> > On 11/07/2013 17:28, Neil wrote:
> >> Been banging my head over a problem with the EUSART missing chars
> >> coming into a PIC18F24K22.
> >>
> >> Quick overview -- I am sitting in a busy loop waiting for chars with
> >> RC1IF, and processing anything that comes in right away.  I do have a
> >> serial-receive interrupt routine that gets used later, but it's
> >> disabled for now (PIE1bits.RC1IE =3D 0).
> > I think that you miss a point: if the routine is still compiled in
> > the interrupt
> > handler it exists and works.
> > That you have disabled is ONLY the firing of a NEW interrupt when
> receiving a
> > char. But if you are in the interrupt by other means maybe that the
> serial
> > routine will be invoked.
> >  This because the RC1IF and TX1IF flags are set too if the interrupt
> > is not enabled.
> > Cheers
> >             Nicola
> >
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>
>
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