; polling an io pin ; poll p0.1 ; if set, write 55H to port 1 ;if low, write 0 to port 1 ORG 0H SETB P0.1 ; make P0.1 an input pin AGAIN: JNB P0.1, LLOW LHIGH: MOV P1, #55H SJMP HERE LLOW: MOV P1, #00H HERE: SJMP AGAIN END
Related topics:
8051 Program - logical operation | 8051 Program - parity generation | 8051 Program - port loopback | 8051 Program - send ascii to port | 8051 Program - serializing data | 8051 Program - simple serial transmission | 8051 Program - memory subroutines | 8051 Program - math subroutines | 8051 Program - conversion subroutines
List of topics: 8051
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