MANUAL DE MICROCONTROLADORES PIC
MANUAL DE MICROCONTROLADORES PIC
MANUAL DE MICROCONTROLADORES PIC
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BANK1<br />
CLRF TRISA<br />
BANK0<br />
CLRF PORTA<br />
NOP<br />
NOP<br />
Muestre<br />
BCF OE<br />
RUSCAN<br />
CALL SCAN<br />
XORLW 0x00 ;espera una Tecla<br />
BTFSC _z<br />
GOTO Muestre<br />
MOVWF PORTA<br />
MOVLW .50<br />
MOVWF COUNT<br />
LOOPSCAN<br />
CALL <strong>DE</strong>L5MS<br />
<strong>DE</strong>CFSZ COUNT,1<br />
GOTO LOOPSCAN<br />
GOTO RUSCAN<br />
;************************************************************************<br />
***<br />
<strong>DE</strong>L5MS<br />
MOVLW .12<br />
MOVWF R1<br />
MOVLW 7<br />
MOVWF R2<br />
MOVLW 1<br />
MOVWF R3<br />
MOVLW 1<br />
MOVWF R4<br />
LOOP<strong>DE</strong>L5<br />
<strong>DE</strong>CFSZ R1,F<br />
GOTO LOOP<strong>DE</strong>L5<br />
<strong>DE</strong>CFSZ R2,F<br />
GOTO LOOP<strong>DE</strong>L5<br />
<strong>DE</strong>CFSZ R3,F<br />
GOTO LOOP<strong>DE</strong>L5<br />
<strong>DE</strong>CFSZ R4,F<br />
GOTO LOOP<strong>DE</strong>L5<br />
NOP<br />
RETURN<br />
;***************************************************************<br />
;RETORNA W=00 NO HAY TECLA OPRIMIDA,<br />
;RETORNA W=COD SI TECLA OPRIMIDA.<br />
;**************************************************************<br />
SCAN
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