コード例 #1
0
ファイル: HIDDevice.cs プロジェクト: ktemkin/uniloader-pc
        /// <summary>
        /// Finds a device given its PID and VID
        /// </summary>
        /// <param name="nVid">Vendor id for device (VID)</param>
        /// <param name="nPid">Product id for device (PID)</param>
        /// <returns>A new device class of the given type or null</returns>
        public static HIDDevice FindDevice(int nVid, int nPid)
        {
            string strPath = string.Empty;
            string strSearch = string.Format("vid_{0:x4}&pid_{1:x4}", nVid, nPid); // first, build the path search string
            Guid gHid;
            HidD_GetHidGuid(out gHid);	// next, get the GUID from Windows that it uses to represent the HID USB interface
            IntPtr hInfoSet = SetupDiGetClassDevs(ref gHid, null, IntPtr.Zero, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT);	// this gets a list of all HID devices currently connected to the computer (InfoSet)
            try
            {
                DeviceInterfaceData oInterface = new DeviceInterfaceData();	// build up a device interface data block
                oInterface.Size = Marshal.SizeOf(oInterface);
                // Now iterate through the InfoSet memory block assigned within Windows in the call to SetupDiGetClassDevs
                // to get device details for each device connected
                int nIndex = 0;
                while (SetupDiEnumDeviceInterfaces(hInfoSet, 0, ref gHid, (uint)nIndex, ref oInterface))	// this gets the device interface information for a device at index 'nIndex' in the memory block
                {
                    string strDevicePath = GetDevicePath(hInfoSet, ref oInterface);	// get the device path (see helper method 'GetDevicePath')
                    if (strDevicePath.IndexOf(strSearch) >= 0)	// do a string search, if we find the VID/PID string then we found our device!
                    {
                        HIDDevice oNewDevice = new HIDDevice();	// create an instance of the class for this device

                        oNewDevice.Initialise(strDevicePath);	// initialise it with the device path
                        return oNewDevice;	// and return it
                    }
                    nIndex++;	// if we get here, we didn't find our device. So move on to the next one.
                }
            }
            finally
            {
                // Before we go, we have to free up the InfoSet memory reserved by SetupDiGetClassDevs
                SetupDiDestroyDeviceInfoList(hInfoSet);
            }
            return null;	// oops, didn't find our device
        }
コード例 #2
0
ファイル: HIDReport.cs プロジェクト: ktemkin/uniloader-pc
 /// <summary>
 /// Construction. Setup the buffer with the correct output report length dictated by the device
 /// </summary>
 /// <param name="oDev">Creating device</param>
 public HIDOutputReport(HIDDevice oDev)
     : base(oDev)
 {
     SetBuffer(new byte[oDev.OutputReportLength]);
 }
コード例 #3
0
ファイル: HIDReport.cs プロジェクト: ktemkin/uniloader-pc
 /// <summary>
 /// Constructor
 /// </summary>
 /// <param name="oDev">Constructing device</param>
 public HIDReport(HIDDevice oDev)
 {
     // Do nothing
 }
コード例 #4
0
ファイル: HIDReport.cs プロジェクト: ktemkin/uniloader-pc
 /// <summary>
 /// Construction. Do nothing
 /// </summary>
 /// <param name="oDev">Creating device</param>
 public HIDInputReport(HIDDevice oDev)
     : base(oDev)
 {
 }