89c51 汇编 串口发送数据

ORG 00H

START:

MOV SCON,#50H //设置串口方法1，答应承受

MOV TMOD,#20H

MOV TH1, #0F3H //波特率为2400B/s

MOV TL1, #0F3H

SETB TR1
SEND:

MOV A, #41H

MOV P1, A //显现要发送的数据
MOV SBUF,A

WAIT:

JBC TI, SEND
JMP WAIT

END