我如何使用QT获得我的RFID卡的芯片序列号

Question

我正在尝试使用rfid读取器和qt creator c ++作为编程平台来获取rfid卡的芯片序列号。

但是每次我运行代码时，它总是在rf_anticoll处停止。谁能指出我的错误。 rf_anticoll是MasterRD.dll的功能

这是我的代码

void testWindow::get_rf_id()
{

    lib->load();

    unsigned char mode = 0x52;
    unsigned short TagType;
    unsigned char bcnt = 0x04;
    unsigned char len;
    unsigned char Snr;
    unsigned char Size;

  int run = rf_init_com(com,baud);

  if(run){
        qDebug() << "failed to conect to RF Device";
        return;
    }

rf_light(icdev,1);
    run = rf_request(icdev,mode,&TagType);
    if(run){
       qDebug() << "Failed to request";
        return;
    }
    run = rf_anticoll(icdev,bcnt,&Snr,&len);
    if(run || len != 4){
        qDebug() << "Failed in rf_anticoll";
        return;
    }
    run = rf_select(icdev,&Snr,len,&Size);
    if(run){
        qDebug() << "Failed in select";
        return;
    }
    qDebug()<<"select passed!";
    rf_beep(icdev,9);
    rf_light(icdev,3);

}