enhancedr.asm

用51单片机实现无线信道的靠干扰编码

ORG 0
JMP MAIN
MAIN:
MOV TMOD,#20H
ORL PCON,#80H
MOV TH1,#160     ;boud rate 600 USING 11.0592MHz OSC
SETB TR1
MOV SCON,#01010000B
MOV P2,#00H
CLR RI
WAIT1:
JNB RI,WAIT1
MOV A,SBUF
CJNE A,#55H,NOTHEAD
JMP DETECT
NOTHEAD:
CLR  RI
JMP  WAIT1
DETECT:
CLR  RI
WAIT2:
JNB RI,WAIT2
MOV A,SBUF
CJNE A,#0FH,NEXT1
MOV P2,#70H
JMP OVER
NEXT1:
CJNE A,#0F0H,NEXT2
MOV P2,#00H
JMP OVER
NEXT2:
CJNE A,#0FCH,NEXT3
SETB P2.3
CLR  P2.2
JMP OVER
NEXT3:
CJNE A,#0F3H,NEXT4
CLR  P2.3
SETB P2.2
JMP OVER
NEXT4:
CJNE A,#0CFH,NEXT5
CLR  P2.3
CLR  P2.2
SETB P2.1
CLR  P2.0
JMP OVER
NEXT5:
CJNE A,#3FH,OVER
CLR  P2.3
CLR  P2.2
CLR  P2.1
SETB P2.0
OVER:
CLR RI
JMP WAIT1
END