Oops.. I forgot this other one
...
  else
    if ( RA4 = 0 & SLEEPING)      should it be if ((RA4 == 0) && SLEEPING)
    {
        RD1 = 1 ;
        RD0 = 1 ;
        SLEEPING = 0 ;
    }
...
Regards

Gaston Gagnon wrote:

> Hi Ed,
>
> In the main() fonction, you may want
>      if(RA4 == 0)    instead of     if(RA4 = 0)
> Is RA4 an open collector on that PIC? If so do you have a pull-up resistor ?
>
> Hope this helps.
> Gaston
>
> Ed Troy wrote:
>
> > I have a very simple application for a pic 16c74b. (Yes, I know it is gross
> > overkill, but that is what we are using.) Basically, it is being used to
> > program two National Semiconductor synthesizers. They use the standard SPI
> > bus, which has a data, a clock, and an enable line. I am using (or at least
> > trying to use) RC5 for data, RC3 for clock, and RC2 for low synthesizer
> > enable and RC1 for high synthesizer enable. The code seems to do nothing at
> > all, in either MPLAB or on the actual board. Basically, nothing toggles or
> > does ANYTHING! I am sure I am doing something incredibly stupid, or lacking
> > some very simple line of code to set something up, but I can't figure out
> > the problem at all. I am attaching a copy of the c code (I used a Hi-Tech
> > compiler), but I don't believe there is anything non-standard in the code,
> > and the actual hex code that was generated by the Hi-Tech compiler. The
> > only error messages I get are not errors but warnings indicating math
> > overflow in lines 85, 90, 110, 115, which are SSPBUF=R_RX_LOW,
> > SSPBUF=N_RX_LOW, SSPBUF=R_RX_HIGH, and SSPBUF=N_RX_HIGH. It seems
> > especially unusual that it gives warnings for those lines, but not other
> > lines where SSPBUF is set, which are essentially equivalent.
> >
> > Any help on where my problem is would be greatly appreciated. As I said,
> > this is very simple, and the fact that nothing happens tells me that I am
> > just overlooking something very simple.
> >
> > TIA,
> > Ed
> >
> >   ------------------------------------------------------------------------
> >
> >    TEST3.HEXName: TEST3.HEX
> >             Type: Plain Text (text/plain)
> >
> >    TEST3.CName: TEST3.C
> >           Type: Plain Text (text/plain)
>
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