enhancedt.asm

来自「用51单片机实现无线信道的靠干扰编码」· 汇编 代码 · 共 44 行

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 P0,#0FFH
SCAN:
JNB P0.7,NEXT1
MOV R0,#0FH
JMP SEND
NEXT1:
JNB P0.6,NEXT2
MOV R0,#0F0H
JMP SEND
NEXT2:
JNB P0.5,NEXT3
MOV R0,#0FCH
JMP SEND
NEXT3:
JNB P0.4,NEXT4
MOV R0,#0F3H
JMP SEND
NEXT4:
JNB P0.3,NEXT5
MOV R0,#0CFH
JMP SEND
NEXT5:
JNB P0.2,SCAN
MOV R0,#3FH
SEND:
CLR TI
MOV A,#55H ;FRAME HEAD
MOV SBUF,A
JNB TI,$
CLR TI
MOV A,R0   ;CONTROL MESSAGE
MOV SBUF,A 
JNB TI,$
CLR TI
JMP SCAN
END