串口主机程序.txt

来自「实现简单的串口传输工作! 有数据检验,汇编程序!」· 文本 代码 · 共 29 行

     ORG 0000H
     LJMP MAIN
     ORG 0023H
     LJMP INT
     ORG 0030H
MAIN:MOV PCON,#80H
     MOV SCON,#90H
	 SETB EA
	 SETB ES
	 MOV A,P1
	 MOV C,P
	 MOV TB8,C
	 MOV SBUF,A
	 SJMP $

INT:  JB RI,LOOP1
      CLR TI
	  SJMP END1
LOOP1:CLR RI
      MOV A,SBUF
	  CJNE A,#00H,LOOP2
	  CLR ES
END1: RETI
LOOP2:MOV A,P1
      MOV C,P
	  MOV TB8,C
	  MOV SBUF,A
	  SJMP END1
	  END