每次用串口调试助手发送01之后，就会都到6个数据

2万 · 2015-8-15 17:44

单片机通讯，发送01点亮一个灯，再次发送熄灭。程序中不需要单片机发送数据给电脑，可是每次用串口调试助手发送01之后，就会都到6个数据，不知道为什么，请高手指点。晶振是11.0592，波特率9600

2万 · 2015-8-15 17:44

程序呢

2万 · 2015-8-15 17:44

sbit       LED0 = P1^0;
sbit       LED1 = P1^1;
sbit       LED2 = P1^2;
sbit       LED3 = P1^3;
sbit       LED4 = P1^4;
sbit       LED5 = P1^5;
sbit       LED6 = P1^6;
sbit       LED7 = P1^7;

void       Init_Uart(void)
{
      TMOD = 0x20;
      TH1 = 0xFD;
      TL1 = 0xFD;
      TR1 = 1;
      SCON = 0x50;
      PCON = 0;
      EA = 1;
}

void main(void)
{
      uchar i = 0;
      Init_Uart();
      while(1)
            {
                     while(!RI);
                     RI = 0;
                     i = SBUF;
                     switch(i)
                              {
                                    case 0x01: LED0 = ~LED0;break;
                                    case 0x02: LED1 = ~LED1;break;
                                    case 0x03: LED2 = ~LED2;break;
                                    case 0x04: LED3 = ~LED3;break;
                                    case 0x05: LED4 = ~LED4;break;
                                    case 0x06: LED5 = ~LED5;break;
                                    case 0x07: LED6 = ~LED6;break;
                                    case 0x08: LED7 = ~LED7;break;
                              }
            }