C++ MFC界面读写USB HID设备数据程序

1、第一步：列举所有的HID设备：m_ctllHIDdevices.ResetContent(); /这是MFC里面一个list控件，用来显示所有的HID设备的，如果你没有界面，可以不需要此行UpdateData(FALSE); /更新界面CString temp;int Count = 0; /Total number of devices foundDWORD strSize=0,requiredSize=0;BOOL result1,result2;ULONG DeviceInterfaceDetailDataSize;/定义一些变量，以后会用到SP_DEVINFO_DATA DeviceI

2、nfoData;SP_DEVICE_INTERFACE_DATA DeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATA DeviceInterfaceDetailData;/PSP_DEVICE_INTERFACE_DETAIL_DATA test;/第一步：获取deviceIDGUID deviceId;HidD_GetHidGuid(&deviceId);/第二步：获取设备信息HDEVINFO handle;handle = SetupDiGetClassDevs(&deviceId, NULL, NULL, DIGCF_DEVICEIN

3、TERFACE | DIGCF_PRESENT); /Get only HID devices/第三步：对所有的设备进行枚举/SetupDiEnumDeviceInterfaces();result1=false; /定义一些变量result2=false;CString temp11=;doDeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);result1 = SetupDiEnumDeviceInterfaces(handle,NULL, / IN PSP_DEVINFO_DATA DeviceInfoData, OP

4、TIONAL&deviceId,Count,&DeviceInterfaceData);/获得设备详细数据（初步）SetupDiGetDeviceInterfaceDetail(handle,&DeviceInterfaceData,NULL,0,&strSize,NULL);requiredSize=strSize;DeviceInterfaceDetailData=(PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(requiredSize);DeviceInterfaceDetailData-cbSize=sizeof(SP_DEVICE_INTERFACE

5、_DETAIL_DATA);DeviceInfoData.cbSize=s第一步：列举所有的HID设备：m_ctllHIDdevices.ResetContent(); /这是MFC里面一个list控件，用来显示所有的HID设备的，如果你没有界面，可以不需要此行UpdateData(FALSE); /更新界面CString temp;int Count = 0; /Total number of devices foundDWORD strSize=0,requiredSize=0;BOOL result1,result2;ULONG DeviceInterfaceDetailDataSize

6、;/定义一些变量，以后会用到SP_DEVINFO_DATA DeviceInfoData;SP_DEVICE_INTERFACE_DATA DeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATA DeviceInterfaceDetailData;/PSP_DEVICE_INTERFACE_DETAIL_DATA test;/第一步：获取deviceIDGUID deviceId;HidD_GetHidGuid(&deviceId);/第二步：获取设备信息HDEVINFO handle;handle = SetupDiGetClassDevs(

7、&deviceId, NULL, NULL, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT); /Get only HID devices/第三步：对所有的设备进行枚举/SetupDiEnumDeviceInterfaces();result1=false; /定义一些变量result2=false;CString temp11=;doDeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);result1 = SetupDiEnumDeviceInterfaces(handle,NULL, / I

8、N PSP_DEVINFO_DATA DeviceInfoData, OPTIONAL&deviceId,Count,&DeviceInterfaceData);/获得设备详细数据（初步）SetupDiGetDeviceInterfaceDetail(handle,&DeviceInterfaceData,NULL,0,&strSize,NULL);requiredSize=strSize;DeviceInterfaceDetailData=(PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(requiredSize);DeviceInterfaceDetailD

9、ata-cbSize=sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);DeviceInfoData.cbSize=sizeof(SP_DEVINFO_DATA);/再次获得详细数据result2=SetupDiGetDeviceInterfaceDetail(handle,&DeviceInterfaceData,DeviceInterfaceDetailData,strSize,&requiredSize,&DeviceInfoData);/获得设备路径（最重要的部分）temp=DeviceInterfaceDetailData-DevicePath;Upda

10、teData(FALSE);m_ctllHIDdevices.AddString(temp);Count+; while (result1);UpdateData(false);izeof(SP_DEVINFO_DATA);/再次获得详细数据result2=SetupDiGetDeviceInterfaceDetail(handle,&DeviceInterfaceData,DeviceInterfaceDetailData,strSize,&requiredSize,&DeviceInfoData);/获得设备路径（最重要的部分）temp=DeviceInterfaceDetailData-

11、DevicePath;UpdateData(FALSE);m_ctllHIDdevices.AddString(temp);Count+; while (result1);UpdateData(false);第二步：循环读取HID设备数据（根据用户提供的HID的vendorID和productID)，并且把字节解码成二进制，在MFC界面上用LED展示：为了不影响主线程的运行，我把读取数据的操作，放在一个子线程里！每隔50ms去读取一次数据！首先创建一个线程：HANDLE hThread1;bStopHID=false; /这个变量，以后用来停止线程UpdateData(true); /更新界面

12、，获取变量UpdateData(false);hThread1 = CreateThread(NULL,0,Thread_Enable_Read,(LPVOID)this, NULL, NULL);在线程的程序里：CusbhidDlg *p = ( CusbhidDlg *)pvParam; /获取主窗口的指针，用来调用主窗口的变量和函数p-UpdateData(true);p-bStopHID=false;CString temp;CString DevicePath;temp=;int Count = 0; /Total number of devices foundDWORD strSi

13、ze=0,requiredSize=0;BOOL result1,result2;ULONG DeviceInterfaceDetailDataSize;SP_DEVINFO_DATA DeviceInfoData;SP_DEVICE_INTERFACE_DATA DeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATA DeviceInterfaceDetailData;/PSP_DEVICE_INTERFACE_DETAIL_DATA test;/1GUID deviceId;HidD_GetHidGuid(&deviceId);int ve

14、nderID=p-v_eVendorID; /从窗口里获取用户输入的VendorID int productID=p-v_eProductID;/从窗口里获取用户输入的ProductIDunsigned char inbuffer2; /用来存放读取的数据，请在这里定义你自己需要的长度，我每次读一个字节进来unsigned long numBytesReturned;HIDD_ATTRIBUTES devAttr;PHIDP_PREPARSED_DATA PreparsedData;HIDP_CAPS Capabilities;int readValue;bool LED;int flag=0

15、;/2HDEVINFO handle;handle = SetupDiGetClassDevs(&deviceId, NULL, NULL, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT); /Get only HID devicesint i=0;int j=p-m_ctllHIDdevices.GetCount();for (i=0;im_ctllHIDdevices.GetCount();i+)p-m_ctllHIDdevices.GetText(i,temp);DevicePath=temp;/CreateFile是非常重要的一步，用来建立于HID通信的句

16、柄HANDLE hCom = CreateFile (DevicePath,GENERIC_READ | GENERIC_WRITE,FILE_SHARE_READ | FILE_SHARE_WRITE,NULL,OPEN_EXISTING, 0,NULL);if (hCom = INVALID_HANDLE_VALUE)/AfxMessageBox(Invalide Device Path.);continue;devAttr.Size=sizeof(HIDD_ATTRIBUTES);if (!HidD_GetAttributes(hCom,&devAttr)CloseHandle(hCom

17、);AfxMessageBox(Cannot get the parameters of the HID.);return 0;/temp.Format(Vendor ID: %d, Product ID:%d,devAttr.VendorID,devAttr.ProductID); /Compare with the Vendor ID and Product ID from Nakamura-san/AfxMessageBox(temp);if (!HidD_GetPreparsedData(hCom,&PreparsedData)CloseHandle(hCom);AfxMessageB

18、ox(Cannot get the Preparsed Data.);return 0;if(!HidP_GetCaps(PreparsedData,&Capabilities)CloseHandle(hCom);AfxMessageBox(Cannot get the Cap Data.);return 0;if (devAttr.VendorID = venderID & devAttr.ProductID = productID)while(1)result1 = ReadFile(hCom, &inbuffer0, Capabilities.InputReportByteLength,

19、 &numBytesReturned, 0);temp=inbuffer;/p-m_eDataRead=CString(inbuffer);/p-UpdateData(false);if(!result1)AfxMessageBox(Cannot Read Data.);return 0;readValue=inbuffer1;p-m_eDataRead.Format(%d,readValue);/下面是我把数据从10进制转换成二进制，并且点亮LED (一个字节有8个bits,可以点亮8个LEDfor (int k=0;km_sDynLED0.SwitchOff();elsep-m_sDynL

20、ED0.SwitchOn();else if (k=1)if (flag=0)p-m_sDynLED1.SwitchOff();elsep-m_sDynLED1.SwitchOn();else if (k=2)if (flag=0)p-m_sDynLED2.SwitchOff();elsep-m_sDynLED2.SwitchOn();else if (k=3)if (flag=0)p-m_sDynLED3.SwitchOff();elsep-m_sDynLED3.SwitchOn();else if (k=4)if (flag=0)p-m_sDynLED4.SwitchOff();elsep

21、-m_sDynLED4.SwitchOn();else if (k=5)if (flag=0)p-m_sDynLED5.SwitchOff();elsep-m_sDynLED5.SwitchOn();else if (k=6)if (flag=0)p-m_sDynLED6.SwitchOff();elsep-m_sDynLED6.SwitchOn();else if (k=7)if (flag=0)p-m_sDynLED7.SwitchOff();elsep-m_sDynLED7.SwitchOn();p-UpdateData(false);:Sleep(50);/判断用户是否点击停止按钮，若

22、是，则退出if(p-bStopHID)AfxMessageBox(stopped.);return 0;if (i=j)AfxMessageBox(There is no such HID device.);return 0;第三步：向HID设备写数据（根据用户提供的HID的vendorID和productID)，用户输入的是二进制数据：与读的程序一样，唯一区别就是红色那部分！UpdateData(true);bStopHID=false;CString temp;CString DevicePath;temp=;int Count = 0; /Total number of devices

23、foundDWORD strSize=0,requiredSize=0;BOOL result1,result2;ULONG DeviceInterfaceDetailDataSize;SP_DEVINFO_DATA DeviceInfoData;SP_DEVICE_INTERFACE_DATA DeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATA DeviceInterfaceDetailData;/PSP_DEVICE_INTERFACE_DETAIL_DATA test;/1GUID deviceId;HidD_GetHidGuid(&deviceId);int ve