标题:
单片机串口通信点亮小灯
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作者:
ZYX-51
时间:
2020-4-10 21:31
标题:
单片机串口通信点亮小灯
我也是单片机小白 刚接触单片机不久 今天学习了串口通信 通过串口通信来控制小灯的点亮 分享给大家 再接再厉
#include<reg52.h>
typedef unsigned char u8;
typedef unsigned int u16;
u8 i;
sbit led0=P2^0;
sbit led1=P2^1;
sbit led2=P2^2;
sbit led3=P2^3;
sbit led4=P2^4;
sbit led5=P2^5;
sbit led6=P2^6;
sbit led7=P2^7;
void UsartInit()
{
TMOD=0x20;
TH1=0xF3;
TL1=0XF3;
TR1=1;
PCON=0X80;
ES=1;
EA=1;
SCON=0X50;
}
void main()
{
UsartInit();
while(1);
}
void Usart() interrupt 4
{
u8 receiveData;
receiveData=SBUF; //???????????
i=SBUF;
switch(i)
{
case'0' :led0=0;break;
case'1' :led1=0;break;
case'2' :led2=0;break;
case'3' :led3=0;break;
case'4' :led4=0;break;
case'5' :led5=0;break;
case'6' :led6=0;break;
case'7' :led7=0;break;
}
RI=0; //????????ж???λ
SBUF=receiveData; //???????????????????????????
while(!TI);//??????????????
TI=0; //????????ж???λ
}
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