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51單片機PC中控系統仿真電路原理圖
51單片機PC中控系統源程序如下：
- #include <AT89X52.h>
- #define ON 0
- #define OFF 1
- sbit Relay = P2^7; //繼電器控制引腳
- //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;
- }
- //發送一個字節的數據
- 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) //接收數據
- {
- RI = 0;
- temp = SBUF;
- if(temp == 0x01) //如果是打開繼電器
- {
- Relay = ON; //打開繼電器
- Send(0x01); //反饋繼電器狀態信息
- }
- else if(temp == 0x02) //如果是關閉繼電器
- {
- Relay = OFF;
- Send(0x02); //反饋繼電器狀態
- }
- else
- {
- Send(0x03);//無動作
- }
- }
- }
- main()
- {
- InitUART();
- Relay = OFF; //繼電器斷開
- while(1)
- {
- }
- }
51單片機PC中控系統仿真所有資料下載：http://m.zg4o1577.cn/bbs/dpj-54940-1.html
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