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cgi网页怎么读取串口数据并动态显示

热度:530   发布时间:2013-06-19 10:26:41.0
cgi网页如何读取串口数据并动态显示
哪位年兄年弟会可以帮写一段cgi读取串口的程序? 
下面是我实现的单独的串口读取程序,我想在网页上实现读取串口数据的功能
        /*while(1)
          {                  
                while((nread=read(fd,buff,512))!=-1)
                   {
                              printf("\nLen %d\n",nread);
                              buff[nread+1]='\0';
                         //以下的程序可以忽略
                                for(i=0;i<nread;i++)
                                {
                                        unsigned char ch1=0x0f&buff[i];
                                        unsigned char ch2=0xf0&buff[i];
                                        ch2=ch2>>4;
                                        if(ch2>=10)
                                                printf("%c",'A'+ch2-10);
                                        else
                                                printf("%d",ch2);
                                        if(ch1>=10)
                                                printf("%c",'A'+ch1-10);
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