Hi Debbie,

On Sun, Feb 02, 2003 at 12:10:53PM +1100, Debbie Hynes wrote:
> Hi PICers,
>
> I'm trying to send letters to an LCD by indexing PCL
> from within a MACRO. It goes to "loop" OK & calls
> "standby" OK but it gets lost soon as I add w to PCL.
>
> Is not supposed to happen?  :( Uh ... any ideas?
>
> Thankz if can help -Debbie :)
>
>
> STANDBY_MSG MACRO
>           LOCAL loop
>           clrf  count
>           goto  loop
> standby   movf  count,w
>           addwf PCL,f
>           DT "STANDBY"
>
> loop
>
>           call   standby
>           movwf  temp      ;Stash the letter for tx to the LCD
>           LCD_MSG         ;Send a nibble to the LCD. Works.
>           incf   count
>           movlw  0x07       ;The number of letters to be sent
>           andwf  count,w
>           btfss  STATUS,Z
>            goto  loop
>           nop
>         ENDM

Before changing PCL you need to correctly set PCLATCH (I may not have the
mnomonic correct). This can be done by hand or using an assembler directive.

I've had this bite me too.

Matthew

--
Matthew Miller
SVCC College Bound, Technology Coordinator

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads