USB 设备检测 - Windows &Linux (FT232R) [英] USB device detection - Windows & Linux (FT232R)

问题描述

我如何在 windows 和 linux 中枚举和识别(获取 pid、vid 和串行)FT232R 芯片.我需要:1. 在程序开始时枚举已经插入的设备2.检测USB设备的插入3.获取PID、VID、Serial

How can I enumerate and identify (get pid, vid and serial) FT232R chips in windows and linux. I need to: 1. at start of program enumerate already plugged devices 2. detect plugging of usb device 3. get PID, VID, Serial

我需要在 windows 和 linux 中做到这一点.我知道有适用于 Windows 和 Linux 的 libusb，但我对 USB 没有太多经验.代码示例最好.

And I need to do that in windows and linux. I know there is libusb for windows as well as for linux, but I don't have that much experience with USB. Code example would be best.

推荐答案

您应该在 Windows 中使用 SetupAPIs 来获取设备信息，如硬件 ID(包含 vid 和 pid)并检测插入/拔出，请参见此链接中的示例注册设备通知

You should use SetupAPIs in Windows for getting device information like hardware id(contains vid and pid both) and to detect the plugging/unplugging see example in this link Registering for Device Notification

要使用 SetupAPI，您可以使用以下代码作为参考，并根据您的要求添加/修改.

To use SetupAPI you can use below code as reference and add/modify according to your requirement.

#include "stdafx.h"
#include <stdlib.h>
#include <Windows.h>
// Link to setapi.lib
#include <setupapi.h>
void GetDeviceInfo()
{
  GUID gUSBGuid;
  DWORD  ClassGuidListSize = 1;
  DWORD  RequiredSize = NULL;
  //if device shown under "USB" node in Devmgr, else see inf for classname
  BOOL bres = SetupDiClassGuidsFromName((PCTSTR)"USB",
             &gUSBGuid,//GUID will get populated 
             ClassGuidListSize,
             &RequiredSize);

  HDEVINFO hDevInfo = SetupDiGetClassDevs(&gUSBGuid,NULL,NULL,DIGCF_PRESENT);

if (INVALID_HANDLE_VALUE != hDevInfo)
{
  BOOL bResult = FALSE;
  SP_DEVICE_INTERFACE_DATA  tDeviceInterfaceData;
  tDeviceInterfaceData.cbSize = sizeof(SP_INTERFACE_DEVICE_DATA);

    for (int nMemberIndex = 0; TRUE ; nMemberIndex++)
    {
      SP_DEVINFO_DATA tSpDevInfoData;
      tSpDevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
      //Get the tSpDevInfoData for the instance ID
      bResult = SetupDiEnumDeviceInfo(hDevInfo,nMemberIndex,&tSpDevInfoData);
         if(bResult)
         {
            TCHAR *szHardwareId = new TCHAR[128] ;
            DWORD dwtype = REG_SZ;
            SetupDiGetDeviceRegistryProperty(hDevInfo,&tSpDevInfoData,SPDRP_HARDWAREID 
                                           ,&dwtype,(PBYTE szHardwareId,256,NULL);
           //code to process szHardwareId
             delete szHardwareId;
             break;
          }

    }

  }
}

我不知道 Linux ..:(

I dont have idea for Linux..:(

希望这有帮助..

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