Ian Jordan wrote:
>
> I have been using Tom McGahee's RS-232 code to get started on an RS-232
> project. I've stripped the code down so that it's "receive only," which is
> what I'll be needing.

You can probably try this which should echo the same character back.

;
; ------------------------------------
; SET BAUD RATE TO COMMUNICATE WITH PC
; ------------------------------------
; Boot Baud Rate = 9600, No Parity, 1 Stop Bit
;
        bsf STATUS,RP0
        movlw d'25'             ; 9600 baud
        movwf SPBRG
        movlw b'00100100'               ; brgh = high (2)
        movwf TXSTA             ; enable Async Transmission, set brgh
        movlw b'10010000'               ; enable Async Reception
        clrf STATUS             ; RAM Page 0
        movwf RCSTA


Loop    call Receive
        movwf TXREG
        goto Loop

;
; ----------------------------------------
; RECEIVE CHARACTER FROM RS232 OR INTERNAL
; ----------------------------------------
; This routine does not return until a character is received.

Receive nop
          btfss PIR1,RCIF               ; check for received data
          goto Receive

          movf RCREG,W
          return


--
Best regards

Tony

mICros
http://www.bubblesoftonline.com
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