On Saturday 12 April 2003 12:00 pm, Stephen D. Barnes wrote:
> Yup, I'm new to PIC assembly language!
> **What am I doing wrong?**
> When I compile my code which contains an "IF...ELSE...ENDIF", the
>  compiler (MPLab ver. 6.10) gives the following error:
>
>  Error[108] E:\PIC\SALLYBOT.ASM 82 : Illegal character (,)
>
>  The line of code it faults on follows (NOTE-the (,) character is
> NOT in the code in question as the reported error would suggest).
>
>  if (PB1 == 1) && (PB2 == 1)
>
>  PB1 and PB2 are previously defined variables (portb,5 and
> portb,6).

No, they're not variables. They're text strings. So your statement
looks like:

if (portb,5 == 1) && (portb,6 == 1)

> I am attempting to test for a condition where both
> switches are closed at the same time. I have tried this several
> different ways and always get the same error.
> Any insights?

Beyond this, the "if" statement doesn't do what you think it does.
It's a directive to the assembler, *not* something that makes the PIC
evaluate a condition.

You want to do something considerably less readable:

        btfsc PB1
        goto nope
        btfsc PB2
        goto nope
yup:
        ; both 1 here
        bra done
nope:
        ; not both 1 here
done:

--
Ned Konz
http://bike-nomad.com
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