|
|
51单片机PC中控系统仿真电路原理图
51单片机PC中控系统源程序如下：
- #include <AT89X52.h>
- #define ON 0
- #define OFF 1
- sbit Relay = P2^7; //继电器控制引脚
- //初始化串口
- void InitUART(void)
- {
- TMOD = 0x20; //9600bps
- SCON = 0x50;
- TH1 = 0xFD;
- TL1 = TH1;
- PCON = 0x00;
- EA = 1;
- ES = 1;
- TR1 = 1;
- }
- //发送一个字节的数据
- void Send(unsigned char x)
- {
- SBUF = x;
- while(TI==0);
- TI = 0;
- }
- void Serial(void) interrupt 4 using 0
- {
- unsigned char temp;
- if(RI == 1) //接收数据
- {
- RI = 0;
- temp = SBUF;
- if(temp == 0x01) //如果是打开继电器
- {
- Relay = ON; //打开继电器
- Send(0x01); //反馈继电器状态信息
- }
- else if(temp == 0x02) //如果是关闭继电器
- {
- Relay = OFF;
- Send(0x02); //反馈继电器状态
- }
- else
- {
- Send(0x03);//无动作
- }
- }
- }
- main()
- {
- InitUART();
- Relay = OFF; //继电器断开
- while(1)
- {
- }
- }
51单片机PC中控系统仿真所有资料下载：http://www.51hei.com/bbs/dpj-54940-1.html
|
|
