Pic16F628a Usart

funky gibbon · Mar 7, 2009

Hello All,
First post here, so im using a 16f628a to read the bit status on portA and send the value through rs232 to laptop, everything works, but i dont know how to send a numeric value, at the moment i get ascii characters in the term window when what i really want is say 0x80 to apear when bit 7 is high and so on, does that make any sence, im programming in asm, i know the equivalent in pic basic would be $hex to output hex, what im geting is $char
sorry i havent explained myself well here

thanks in advance

Mike - K8LH · Mar 7, 2009

I have used something like this;

Code:

;
;  Print byte in W as two ASCII nybbles
;
PutByte movwf   TEMP            ; save byte                       |B0
        swapf   TEMP,W          ; swap nybbles in W               |B0
        call    Hex2Asc         ; process left nybble             |B0
        movf    TEMP,W          ; process right nybble            |B0
Hex2Asc andlw   b'00001111'     ; mask off left nybble            |B0
        addlw   h'36'           ;                                 |B0
        btfsc   STATUS,DC       ;                                 |B0
        addlw   h'07'           ;                                 |B0
        addlw   0-6             ; ($FA)                           |B0
        goto    Put232          ; print ASCII nybble              |B0

Pic16F628a Usart

funky gibbon

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Mike - K8LH

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