Royce Simmons wrote:
>
> Greetings All,
>
> Does anyone have code for a F628 serial input routine?  I am having problems
> making this
> work.  I suppose lack of skill is the problem but I am confused with all the
> register options.

I just thought you might be using the UART, so try this code...


;
; SETUP PORTS ETC .....
;

;
; -----------------------
; DISABLE THE COMPARATORS
; -----------------------
;
        movlw b'00000111'
        movwf CMCON
;
; ------------------------------------
; SET BAUD RATE TO COMMUNICATE WITH PC
; ------------------------------------
; Boot Baud Rate = 9600, No Parity, 1 Stop Bit
; @ 4MHz
;
        bsf STATUS,RP0      ; RAM Page 1
        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
        bsf STATUS,RP0      ; RAM Page 0
        movwf RCSTA

        call DelayWt        ; waits a few mS to stabilise
;
; GET CHARACTER FROM PC (or whatever)
;
MainLoop call Receive       ; wait for data -> W
         movwf TXREG        ; echo it back
         goto MainLoop

;
; ----------------------------------------
; 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
          movwf RxHold      ; tempstore data
          return




--
Best regards

Tony

mICros
http://www.bubblesoftonline.com
mailto:sales@bubblesoftonline.com

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