void c51_init()   //串口初始化
{
TMOD=0x20;
TL1=0xf3;
TH1=0xf3;
SCON=0x52;
PCON|=0x80;
TR1=1;
}

void serial () interrupt 4 using 2    //中断接收
{
unsigned char ch;

    {
        while(RI==0);     //程序运行到此便进入死循环
        RI = 0;
     if(count1  <(MAXLEN))
       {
        ch=SBUF;
        inbuf[count1]=ch;
        count1++;
       }
    }
}