hi Paul,

may be 'cause you are setting the BRGH bit. If you
read the microchip "mid range mcu" manual, page 18-22,
you see that there is a "silicon bug" :-)))))

--- Paul A Brown <pabrown2@JUNO.COM> scritto:
> I have some questions regarding the use of the
> hardware serial port on a
> PIC16F876.  All I want to do is initialize tbe
> serial port to 9600 baud,
> asynchronous and spew out some data.  I have looked
> at this code until my
> eyes hurt, but to no avail.  Could somebody point
> out where I am going
> wrong?  Does anyone have any sample transmit or
> receive code for the
> hardware serial ports that they would like to share?
>
> Thanks,
>
> Paul Brown
>
>
> ; Registers
> Cntr       equ  0x20
>
>
> ;Initialize variables
>  clrf     Cntr
>
>
> ;Initialize serial port
> SerInit
>  bsf      RCSTA, SPEN
>  bsf      STATUS, RP0
>  bcf      TXSTA, SYNC       ;Asynchronous
> transmission
>  bsf      TXSTA, BRGH       ;Baud rate generator to
> high speed
>  movlw    129
>  movwf    SPBRG             ;Set BRG for 9600 buad.
>  bsf      TXSTA, TXEN       ;Enable transmit
>  bcf      STATUS, RP0
>
> ;Main Program Loop
> MainLoop
>  bsf      STATUS, RP0
>  btfsc    TXSTA, TRMT       ;Check for data sent
>   goto    TxData
>  goto     MainLoop
>
>
> ;Increment Counter and Transmit
> TxData
>  bcf     STATUS, RP0
>  incf    Cntr, 1
>  movf    Cntr, 0
>  movwf   TXREG
>  goto    MainLoop
>
>  end
>
>
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===
Giacomo Schieppati,
e-mail: gschieppati@yahoo.it
e-mail URGENTI: gschieppati@i.am
e-mail alcooliche: giac@beer.com
ICQ: 34514036


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