8051 interfacing with DC motor

8051 interfacing with DC motor

fig shows interfacing connection.Below is the basic program

; P1.0 CONNECTED TO ENABLE
; P1.1 CONNECTED TO INPUT 1
; P1.2 CONNECTED TO INPUT 2
; ASSUME P2.1 BEING CONNECTED TO SWITCH SW
; THIS PROGRAM WILL ROTATE DC MOTOR CLOCKWISE SW = 0
; AND COUNTER CLOCKWISE WILL BE ROTATION OF DC MOTOR SW = 1

ORG 0000H        ;

MAIN :
CLR P1.0        ;
CLR P1.1        ;
CLR P1.2        ;
SETB P2.1        ;

MONITOR :
SETB P1.0        ; ENABLE CHIP
JNB P2.1, CLOCKWISE    ; JUMP WHEN SW = 0

COUNTERCLOCKWISE :
CLR P1.1        ;
SETB P1.2        ; TURN MOTOR COUNTERCLOCKWISE

CLOCKWISE :
SETB P1.1        ;
CLR P1.2        ; TURN MOTOR CLOCKWISE
SJMP MONITOR        ;
END            ;