main.asm

单片机串口通信程序

ORG 0000H
MOV TMOD,#20H
MOV TH1,#0FDH
MOV TL1,#0FDH
SETB TR1
MOV SCON,#50H
MOV PCON,#00H
MOV P0,00H
MOV P2,00H

MAIN:
   JNB RI,L
   MOV A,SBUF
   CLR RI
   MOV P0,A
L:
AJMP MAIN


END