C++ MFC界面读写USB HID设备数据程序之欧阳术创编.docx
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C++ MFC界面读写USB HID设备数据程序之欧阳术创编.docx
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C++MFC界面读写USBHID设备数据程序之欧阳术创编
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CStringtemp;intCount=0;//TotalnumberofdevicesfoundDWORDstrSize=0,requiredSize=0;BOOLresult1,result2;ULONGDeviceInterfaceDetailDataSize;//定义一些变量,以后会用到SP_DEVINFO_DATADeviceInfoData;SP_DEVICE_INTERFACE_DATADeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATADeviceInterfaceDetailData;//PSP_DEVICE_INTERFACE_DETAIL_DATAtest;//第一步:
获取deviceIDGUIDdeviceId;HidD_GetHidGuid(&deviceId);//第二步:
获取设备信息HDEVINFOhandle;handle=SetupDiGetClassDevs(&deviceId,NULL,NULL,DIGCF_DEVICEINTERFACE|DIGCF_PRESENT);//GetonlyHIDdevices//第三步:
对所有的设备进行枚举//SetupDiEnumDeviceInterfaces();result1=false;//定义一些变量result2=false;CStringtemp11="";do{DeviceInterfaceData.cbSize=sizeof(SP_DEVICE_INTERFACE_DATA);result1=SetupDiEnumDeviceInterfaces(handle,NULL,//INPSP_DEVINFO_DATADeviceInfoData,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);DeviceInterfaceDetailData->cbSize=sizeof(SP_DEVICE_INTERFACE_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CStringtemp;intCount=0;//TotalnumberofdevicesfoundDWORDstrSize=0,requiredSize=0;BOOLresult1,result2;ULONGDeviceInterfaceDetailDataSize;//定义一些变量,以后会用到SP_DEVINFO_DATADeviceInfoData;SP_DEVICE_INTERFACE_DATADeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATADeviceInterfaceDetailData;//PSP_DEVICE_INTERFACE_DETAIL_DATAtest;//第一步:
获取deviceIDGUIDdeviceId;HidD_GetHidGuid(&deviceId);//第二步:
获取设备信息HDEVINFOhandle;handle=SetupDiGetClassDevs(&deviceId,NULL,NULL,DIGCF_DEVICEINTERFACE|DIGCF_PRESENT);//GetonlyHIDdevices//第三步:
对所有的设备进行枚举//SetupDiEnumDeviceInterfaces();result1=false;//定义一些变量result2=false;CStringtemp11="";do{DeviceInterfaceData.cbSize=sizeof(SP_DEVICE_INTERFACE_DATA);result1=SetupDiEnumDeviceInterfaces(handle,NULL,//INPSP_DEVINFO_DATADeviceInfoData,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);DeviceInterfaceDetailData->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;UpdateData(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->DevicePath;UpdateData(FALSE);m_ctllHIDdevices.AddString(temp);Count++;}while(result1);UpdateData(false);
时间:
2021.02.02
创作:
欧阳术
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:
HANDLEhThread1;bStopHID=false;//这个变量,以后用来停止线程UpdateData(true);//更新界面,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;CStringtemp;CStringDevicePath;temp="";intCount=0;//TotalnumberofdevicesfoundDWORDstrSize=0,requiredSize=0;BOOLresult1,result2;ULONGDeviceInterfaceDetailDataSize;SP_DEVINFO_DATADeviceInfoData;SP_DEVICE_INTERFACE_DATADeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATADeviceInterfaceDetailData;//PSP_DEVICE_INTERFACE_DETAIL_DATAtest;//1GUIDdeviceId;HidD_GetHidGuid(&deviceId);intvenderID=p->v_eVendorID;//从窗口里获取用户输入的VendorIDintproductID=p->v_eProductID;//从窗口里获取用户输入的ProductIDunsignedcharinbuffer[2];//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unsignedlongnumBytesReturned;HIDD_ATTRIBUTESdevAttr;PHIDP_PREPARSED_DATAPreparsedData;HIDP_CAPSCapabilities;intreadValue;boolLED;intflag=0;//2HDEVINFOhandle;handle=SetupDiGetClassDevs(&deviceId,NULL,NULL,DIGCF_DEVICEINTERFACE|DIGCF_PRESENT);//GetonlyHIDdevicesinti=0;intj=p->m_ctllHIDdevices.GetCount();for(i=0;i
HidD_GetAttributes(hCom,&devAttr)){CloseHandle(hCom);AfxMessageBox("CannotgettheparametersoftheHID...");return0;}//temp.Format("VendorID:
%d,ProductID:
%d",devAttr.VendorID,devAttr.ProductID);//ComparewiththeVendorIDandProductIDfromNakamura-san//AfxMessageBox(temp);if(!
HidD_GetPreparsedData(hCom,&PreparsedData)){CloseHandle(hCom);AfxMessageBox("CannotgetthePreparsedData...");return0;}if(!
HidP_GetCaps(PreparsedData,&Capabilities)){CloseHandle(hCom);AfxMessageBox("CannotgettheCapData...");return0;}if(devAttr.VendorID==venderID&&devAttr.ProductID==productID){while
(1){result1=ReadFile(hCom,&inbuffer[0],Capabilities.InputReportByteLength,&numBytesReturned,0);temp=inbuffer;//p->m_eDataRead=CString(inbuffer);//p->UpdateData(false);if(!
result1){AfxMessageBox("CannotReadData...");return0;}readValue=inbuffer[1];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(intk=0;k<8;k++){flag=readValue%2;readValue=readValue/2;if(k==0){if(flag==0)p->m_sDynLED0.SwitchOff();elsep->m_sDynLED0.SwitchOn();}elseif(k==1){if(flag==0)p->m_sDynLED1.SwitchOff();elsep->m_sDynLED1.SwitchOn();}elseif(k==2){if(flag==0)p->m_sDynLED2.SwitchOff();elsep->m_sDynLED2.SwitchOn();}elseif(k==3){if(flag==0)p->m_sDynLED3.SwitchOff();elsep->m_sDynLED3.SwitchOn();}elseif(k==4){if(flag==0)p->m_sDynLED4.SwitchOff();elsep->m_sDynLED4.SwitchOn();}elseif(k==5){if(flag==0)p->m_sDynLED5.SwitchOff();elsep->m_sDynLED5.SwitchOn();}elseif(k==6){if(flag==0)p->m_sDynLED6.SwitchOff();elsep->m_sDynLED6.SwitchOn();}elseif(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,若是,则退出if(p->bStopHID){AfxMessageBox("stopped...");return0;}}}}if(i==j){AfxMessageBox("ThereisnosuchHIDdevice...");}return0;
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;CStringtemp;CStringDevicePath;temp="";intCount=0;//TotalnumberofdevicesfoundDWORDstrSize=0,requiredSize=0;BOOLresult1,result2;ULONGDeviceInterfaceDetailDataSize;SP_DEVINFO_DATADeviceInfoData;SP_DEVICE_INTERFACE_DATADeviceInterfaceData;PSP_DEVICE_INTERFACE_DETAIL_DATADeviceInterfaceDetailData;//PSP_DEVICE_INTERFACE_DETAIL_DATAtest;//1GUIDdeviceId;HidD_GetHidGuid(&deviceId);intvenderID=v_eVendorID;intproductID=v_eProductID;unsignedcharinbuffer[2];unsignedlongnumBytesReturned;HIDD_ATTRIBUTESdevAttr;PHIDP_PREPARSED_DATAPreparsedData;HIDP_CAPSCapabilities;intreadValue;boolLED;intflag=0;inbuffer[0]=0;//把界面里的二进制转换成10进制inbuffer[1]=m_eByte0*1+m_eByte1*2+m_eByte2*4+m_eByte3*8+m_eByte4*16+m_eByte5*32+m_eByte6*64+m_eByte7*128;v_eDataToWrite=inbuffer[1];UpdateData(false);//2HDEVINFOhandle;handle=SetupDiGetClassDevs(&deviceId,NULL,NULL,DIGCF_DEVICEINTERFACE|DIGCF_PRESENT);//GetonlyHIDdevicesinti=0;intj=m_ctllHIDdevices.GetCount();for(i=0;i HidD_GetAttributes(hCom,&devAttr)){CloseHandle(hCom);AfxMessageBox("CannotgettheparametersoftheHID...");return;}//temp.Format("VendorID: %d,ProductID: %d",devAttr.VendorID,devAttr.ProductID);//ComparewiththeVendorIDandProductIDfromNakamura-san//AfxMessageBox(temp);if(! HidD_GetPreparsedData(hCom,&PreparsedData)){CloseHandle(hCom);AfxMessageBox("CannotgetthePreparsedData...");return;}if(! HidP_GetCaps(PreparsedData,&Capabilities)){CloseHandle(hCom);AfxMessageBox("CannotgettheCapData...");return;}//WriteFileif(devAttr.VendorID==venderID&&devAttr.ProductID==productID){result1=WriteFile(hCom,inbuffer,2,&numBytesReturned,NULL);//temp=inbuffer;//p->m_eDataRead=CString(inbuffer);//p->UpdateData(false);if(! result1){AfxMessageBox("CannotWriteData...");return;}AfxMessageBox("Suncess...");break;}}if(i==j){AfxMessageBox("ThereisnosuchHIDdevice...");}return; 时间: 2021.02.02 创作: 欧阳术
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