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標題: 單片機串口通信控制小燈亮滅 [打印本頁]

作者: 1936701485 時間: 2016-12-19 22:34
標題: 單片機串口通信控制小燈亮滅

#include<reg51.h>

#include <intrins.h>

#define uint8 unsigned char

#define uint16 unsigned int

uint8 receive_buffer;

led=0xfe;

void send(uint8 moshi)

{

SBUF=moshi;

while(!TI);

TI=0;

}

void main()

{

P2 = 0xff;

TMOD = 0x20;

TH1 = 0xfd;

TL1 = 0xfd;

TR1 = 1;

EA = 1;

SM0 = 0;

SM1 = 1;

REN = 1;

ES = 1;

while(1)

{

P2 =_crol_(led,(receive_buffer-1));

send(receive_buffer);

}

void uart_int() interrupt 4

{

if(RI == 1)

{

RI = 0;

receive_buffer = SBUF;

}

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