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comparison USBLib/Windows/USB/UsbDevice.cs @ 58:fd63c453ff65

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Improved Windows USB enumeration classes
author Ivo Smits <Ivo@UCIS.nl>
date Wed, 09 Oct 2013 20:54:15 +0200
parents 5b14fed54a89
children 3424fa5a12c9
comparison
equal deleted inserted replaced
57:b1efeada517e 58:fd63c453ff65
1 using System; 1 using System;
2 using System.Collections.Generic; 2 using System.Collections.Generic;
3 using System.ComponentModel;
3 using System.Runtime.InteropServices; 4 using System.Runtime.InteropServices;
4 using System.Text; 5 using System.Text;
5 using Microsoft.Win32.SafeHandles; 6 using Microsoft.Win32.SafeHandles;
6 using UCIS.HWLib.Windows.Devices; 7 using UCIS.HWLib.Windows.Devices;
8 using UCIS.USBLib.Communication;
9 using UCIS.USBLib.Descriptor;
7 using UCIS.USBLib.Internal.Windows; 10 using UCIS.USBLib.Internal.Windows;
8 11
9 namespace UCIS.HWLib.Windows.USB { 12 namespace UCIS.HWLib.Windows.USB {
10 public class UsbDevice { 13 public class UsbDevice : IUsbInterface {
14 internal static SafeFileHandle OpenHandle(String path) {
15 SafeFileHandle handle = Kernel32.CreateFile(path, Kernel32.GENERIC_WRITE, Kernel32.FILE_SHARE_WRITE, IntPtr.Zero, Kernel32.OPEN_EXISTING, 0, IntPtr.Zero);
16 if (handle.IsInvalid) throw new Win32Exception(Marshal.GetLastWin32Error());
17 return handle;
18 }
19 internal static Boolean GetNodeInformation(SafeFileHandle handle, out USB_NODE_INFORMATION nodeInfo) {
20 nodeInfo = new USB_NODE_INFORMATION();
21 int nBytes = Marshal.SizeOf(typeof(USB_NODE_INFORMATION));
22 return Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_INFORMATION, ref nodeInfo, nBytes, out nodeInfo, nBytes, out nBytes, IntPtr.Zero);
23 }
24 internal static Boolean GetNodeConnectionInformation(SafeFileHandle handle, UInt32 port, out USB_NODE_CONNECTION_INFORMATION_EX nodeConnection) {
25 int nBytes = Marshal.SizeOf(typeof(USB_NODE_CONNECTION_INFORMATION_EX));
26 nodeConnection = new USB_NODE_CONNECTION_INFORMATION_EX();
27 nodeConnection.ConnectionIndex = port;
28 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, ref nodeConnection, nBytes, out nodeConnection, nBytes, out nBytes, IntPtr.Zero))
29 throw new Win32Exception(Marshal.GetLastWin32Error());
30 return true;
31 }
32 internal static String GetNodeConnectionName(SafeFileHandle handle, UInt32 port) {
33 int nBytes = Marshal.SizeOf(typeof(USB_NODE_CONNECTION_NAME));
34 USB_NODE_CONNECTION_NAME nameConnection = new USB_NODE_CONNECTION_NAME();
35 nameConnection.ConnectionIndex = port;
36 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_NAME, ref nameConnection, nBytes, out nameConnection, nBytes, out nBytes, IntPtr.Zero))
37 throw new Win32Exception(Marshal.GetLastWin32Error());
38 return nameConnection.NodeName;
39 }
40 internal unsafe static int GetDescriptor(SafeFileHandle handle, UInt32 port, byte descriptorType, byte index, short langId, byte[] buffer, int offset, int length) {
41 int szRequest = Marshal.SizeOf(typeof(USB_DESCRIPTOR_REQUEST));
42 USB_DESCRIPTOR_REQUEST request = new USB_DESCRIPTOR_REQUEST();
43 request.ConnectionIndex = port;
44 request.SetupPacket.wValue = (ushort)((descriptorType << 8) + index);
45 request.SetupPacket.wIndex = (ushort)langId;
46 request.SetupPacket.wLength = (ushort)length;
47 int nBytes = length + szRequest;
48 Byte[] bigbuffer = new Byte[nBytes];
49 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, ref request, Marshal.SizeOf(typeof(USB_DESCRIPTOR_REQUEST)), bigbuffer, nBytes, out nBytes, IntPtr.Zero)) {
50 int err = Marshal.GetLastWin32Error();
51 if (err != 2 && err != 31 && err != 87) throw new Win32Exception(err);
52 return 0;
53 }
54 nBytes -= szRequest;
55 if (nBytes > length) nBytes = length;
56 if (nBytes < 0) return 0;
57 if (nBytes > 0) Buffer.BlockCopy(bigbuffer, szRequest, buffer, offset, nBytes);
58 return nBytes;
59 }
60 internal unsafe static String GetRootHubName(SafeFileHandle handle) {
61 USB_ROOT_HUB_NAME rootHubName = new USB_ROOT_HUB_NAME();
62 int nBytesReturned;
63 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_ROOT_HUB_NAME, IntPtr.Zero, 0, out rootHubName, Marshal.SizeOf(rootHubName), out nBytesReturned, IntPtr.Zero))
64 throw new Win32Exception(Marshal.GetLastWin32Error());
65 if (rootHubName.ActualLength <= 0) return null;
66 return rootHubName.RootHubName;
67 }
68 internal unsafe static String GetNodeConnectionDriverKey(SafeFileHandle handle, UInt32 port) {
69 USB_NODE_CONNECTION_DRIVERKEY_NAME DriverKeyStruct = new USB_NODE_CONNECTION_DRIVERKEY_NAME();
70 int nBytes = Marshal.SizeOf(DriverKeyStruct);
71 DriverKeyStruct.ConnectionIndex = port;
72 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_DRIVERKEY_NAME, ref DriverKeyStruct, nBytes, out DriverKeyStruct, nBytes, out nBytes, IntPtr.Zero))
73 return null;
74 return DriverKeyStruct.DriverKeyName;
75 }
76
11 public UsbDevice Parent { get; protected set; } 77 public UsbDevice Parent { get; protected set; }
78 public string DevicePath { get; private set; }
79 public uint AdapterNumber { get; private set; }
12 internal USB_NODE_CONNECTION_INFORMATION_EX NodeConnectionInfo { get; set; } 80 internal USB_NODE_CONNECTION_INFORMATION_EX NodeConnectionInfo { get; set; }
13 internal USB_DEVICE_DESCRIPTOR DeviceDescriptor { get; private set; } 81 internal USB_DEVICE_DESCRIPTOR DeviceDescriptor { get { return NodeConnectionInfo.DeviceDescriptor; } }
14 internal IList<USB_CONFIGURATION_DESCRIPTOR> ConfigurationDescriptor { get; private set; } 82
15 internal IList<USB_INTERFACE_DESCRIPTOR> InterfaceDescriptor { get; private set; } 83 public bool IsHub { get { return NodeConnectionInfo.DeviceIsHub != 0; } }
16 internal IList<USB_ENDPOINT_DESCRIPTOR> EndpointDescriptor { get; private set; } 84 public bool IsConnected { get { return NodeConnectionInfo.ConnectionStatus == USB_CONNECTION_STATUS.DeviceConnected; } }
17 internal IList<HID_DESCRIPTOR> HdiDescriptor { get; private set; } 85 public string Status { get { return NodeConnectionInfo.ConnectionStatus.ToString(); } }
18 public string DevicePath { get; private set; } 86 public string Speed { get { return NodeConnectionInfo.Speed.ToString(); } }
19 public uint AdapterNumber { get; internal set; } 87
20 public string DriverKey { get; private set; } 88 SafeFileHandle OpenHandle() {
21 89 return OpenHandle(DevicePath);
22 public virtual string DeviceDescription { get { return DeviceNode.GetPropertyString(CMRDP.DEVICEDESC); } } 90 }
23 public string DeviceID { get { return DeviceNode.DeviceID; } } 91
24 92 public int NumConfigurations { get { return DeviceDescriptor == null ? 0 : DeviceDescriptor.bNumConfigurations; } }
25 public bool IsConnected { get; internal set; } 93 public int VendorID { get { return DeviceDescriptor == null ? 0 : DeviceDescriptor.idVendor; } }
26 public bool IsHub { get; internal set; } 94 public int ProductID { get { return DeviceDescriptor == null ? 0 : DeviceDescriptor.idProduct; } }
27 public string Status { get; internal set; } 95
28 public string Speed { get; internal set; } 96 private String GetStringSafe(Byte id) {
29 97 if (id == 0) return null;
30 public string Manufacturer { get; private set; } 98 String s = GetStringDescriptor(id);
31 public string SerialNumber { get; private set; } 99 if (s == null) return s;
32 public string Product { get; private set; } 100 return s.Trim(' ', '\0');
33 101 }
34 public int VendorID { get { return DeviceDescriptor.idVendor; } } 102
35 public int ProductID { get { return DeviceDescriptor.idProduct; } } 103 public string Manufacturer { get { return DeviceDescriptor == null ? null : GetStringSafe(DeviceDescriptor.iManufacturer); } }
104 public string Product { get { return DeviceDescriptor == null ? null : GetStringSafe(DeviceDescriptor.iProduct); } }
105 public string SerialNumber { get { return DeviceDescriptor == null ? null : GetStringSafe(DeviceDescriptor.iSerialNumber); } }
106 public virtual string DriverKey { get { using (SafeFileHandle handle = OpenHandle(DevicePath)) return UsbHub.GetNodeConnectionDriverKey(handle, AdapterNumber); } }
107
108 public virtual string DeviceDescription { get { return DeviceNode == null ? null : DeviceNode.GetPropertyString(CMRDP.DEVICEDESC); } }
109 public string DeviceID { get { return DeviceNode == null ? null : DeviceNode.DeviceID; } }
36 110
37 private DeviceNode mDeviceNode; 111 private DeviceNode mDeviceNode;
38 public DeviceNode DeviceNode { 112 public DeviceNode DeviceNode {
39 get { 113 get {
40 if (mDeviceNode == null && DriverKey != null) { 114 String dk = DriverKey;
115 if (mDeviceNode == null && dk != null) {
41 foreach (DeviceNode node in DeviceNode.GetDevices("USB")) { 116 foreach (DeviceNode node in DeviceNode.GetDevices("USB")) {
42 if (DriverKey.Equals(node.DriverKey, StringComparison.InvariantCultureIgnoreCase)) { 117 if (dk.Equals(node.DriverKey, StringComparison.InvariantCultureIgnoreCase)) {
43 mDeviceNode = node; 118 mDeviceNode = node;
44 break; 119 break;
45 } 120 }
46 } 121 }
47 } 122 }
48 return mDeviceNode; 123 return mDeviceNode;
49 } 124 }
50 } 125 }
51 126
52 internal UsbDevice(UsbDevice parent, USB_DEVICE_DESCRIPTOR deviceDescriptor, uint adapterNumber) 127 internal UsbDevice(UsbDevice parent, USB_NODE_CONNECTION_INFORMATION_EX nci, uint port, string devicePath) {
53 : this(parent, deviceDescriptor, adapterNumber, null) { }
54 unsafe internal UsbDevice(UsbDevice parent, USB_DEVICE_DESCRIPTOR deviceDescriptor, uint adapterNumber, string devicePath) {
55 this.Parent = parent; 128 this.Parent = parent;
56 this.AdapterNumber = adapterNumber; 129 this.NodeConnectionInfo = nci;
57 this.DeviceDescriptor = deviceDescriptor;
58 this.DevicePath = devicePath; 130 this.DevicePath = devicePath;
59 ConfigurationDescriptor = new List<USB_CONFIGURATION_DESCRIPTOR>(); 131 this.AdapterNumber = port;
60 InterfaceDescriptor = new List<USB_INTERFACE_DESCRIPTOR>();
61 HdiDescriptor = new List<HID_DESCRIPTOR>();
62 EndpointDescriptor = new List<USB_ENDPOINT_DESCRIPTOR>();
63 if (devicePath == null) return; 132 if (devicePath == null) return;
64 133 }
65 using (SafeFileHandle handel = Kernel32.CreateFile(devicePath, Kernel32.GENERIC_WRITE, Kernel32.FILE_SHARE_WRITE, IntPtr.Zero, Kernel32.OPEN_EXISTING, 0, IntPtr.Zero)) { 134
66 if (handel.IsInvalid) throw new System.ComponentModel.Win32Exception(Marshal.GetLastWin32Error()); 135 private String GetStringDescriptor(Byte index) {
67 int nBytesReturned; 136 return UsbStringDescriptor.GetStringFromDevice(this, index, 0); //0x409
68 int nBytes = UsbApi.MAX_BUFFER_SIZE; 137 }
69 138
70 USB_DESCRIPTOR_REQUEST Request1 = new USB_DESCRIPTOR_REQUEST(); 139 static UsbDevice GetUsbDevice(DeviceNode node, out Boolean isHostController) {
71 Request1.ConnectionIndex = adapterNumber;// portCount; 140 String[] hciinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_HOST_CONTROLLER);
72 Request1.SetupPacket.wValue = (ushort)((UsbApi.USB_CONFIGURATION_DESCRIPTOR_TYPE << 8)); 141 if (hciinterface != null && hciinterface.Length > 0) {
73 Request1.SetupPacket.wLength = (ushort)(nBytes - Marshal.SizeOf(Request1)); 142 isHostController = true;
74 Request1.SetupPacket.wIndex = 0; // 0x409; // Language Code 143 return (new UsbController(null, node, hciinterface[0])).RootHub;
75 144 }
76 // Use an IOCTL call to request the String Descriptor 145 isHostController = false;
77 Byte[] buffer = new Byte[nBytes]; 146 DeviceNode parent = node.GetParent();
78 fixed (Byte* bufferptr = buffer) { 147 Boolean isHostControllerA;
79 if (!Kernel32.DeviceIoControl(handel, UsbApi.IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, ref Request1, Marshal.SizeOf(typeof(USB_DESCRIPTOR_REQUEST)), (IntPtr)bufferptr, nBytes, out nBytesReturned, IntPtr.Zero)) { 148 UsbDevice usbdev = GetUsbDevice(parent, out isHostControllerA);
80 int err = Marshal.GetLastWin32Error(); 149 if (isHostControllerA) return usbdev;
81 Console.WriteLine("IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION returned {0} {1}", err, (new System.ComponentModel.Win32Exception(err)).Message); 150 UsbHub usbhub = usbdev as UsbHub;
82 //SerialNumber = (new System.ComponentModel.Win32Exception(err)).Message; 151 if (usbhub == null) return null;
83 if (err != 2 && err != 31 && err != 87) throw new System.ComponentModel.Win32Exception(err); 152 String driverkey = node.DriverKey;
84 } else { 153 foreach (UsbDevice child in usbhub.Devices) {
85 if (nBytesReturned > nBytes) throw new IndexOutOfRangeException("IOCtl returned too much data"); 154 if (driverkey.Equals(child.DriverKey, StringComparison.InvariantCultureIgnoreCase)) return child;
86 if (nBytesReturned < 0) throw new IndexOutOfRangeException("IOCtl returned insufficient data"); 155 }
87 Byte* ptr = bufferptr + Marshal.SizeOf(Request1); 156 return null;
88 nBytesReturned -= Marshal.SizeOf(Request1); 157 }
89 if (nBytesReturned < 0) throw new IndexOutOfRangeException("IOCtl returned insufficient data"); 158 public static UsbDevice GetUsbDevice(DeviceNode node) {
90 159 Boolean isHostController;
91 int offset = 0; 160 return GetUsbDevice(node, out isHostController);
92 while (offset < nBytesReturned) { 161 /*
93 if (offset + Marshal.SizeOf(typeof(USB_DESCRIPTOR)) >= nBytesReturned) throw new IndexOutOfRangeException("Error in configuration descriptor"); 162
94 USB_DESCRIPTOR* desc = (USB_DESCRIPTOR*)(ptr + offset); 163 String[] hubinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_HUB);
95 offset += desc->bLength; 164 if (hubinterface != null && hubinterface.Length > 0) {
96 if (offset > nBytesReturned) throw new IndexOutOfRangeException("Error in configuration descriptor"); 165 USB_NODE_CONNECTION_INFORMATION_EX nodeConnection;
97 Console.WriteLine("Descriptor type {0} length {1}", desc->bDescriptorType, desc->bLength); 166 using (SafeFileHandle handle = OpenHandle(hubinterface[0])) {
98 if (desc->bDescriptorType == USB_DESCRIPTOR_TYPE.ConfigurationDescriptorType) { 167 if (!GetNodeConnectionInformation(handle, 0, out nodeConnection)) return null;
99 if (desc->bLength < 9) throw new IndexOutOfRangeException("Error in configuration descriptor");
100 USB_CONFIGURATION_DESCRIPTOR configurationDescriptor = *(USB_CONFIGURATION_DESCRIPTOR*)desc;
101 ConfigurationDescriptor.Add(configurationDescriptor);
102 } else if (desc->bDescriptorType == USB_DESCRIPTOR_TYPE.InterfaceDescriptorType) {
103 if (desc->bLength < 9) throw new IndexOutOfRangeException("Error in configuration descriptor");
104 USB_INTERFACE_DESCRIPTOR interfaceDescriptor = *(USB_INTERFACE_DESCRIPTOR*)desc;
105 InterfaceDescriptor.Add(interfaceDescriptor);
106 } else if (desc->bDescriptorType == USB_DESCRIPTOR_TYPE.EndpointDescriptorType) {
107 if (desc->bLength < 7) throw new IndexOutOfRangeException("Error in configuration descriptor");
108 USB_ENDPOINT_DESCRIPTOR endpointDescriptor1 = *(USB_ENDPOINT_DESCRIPTOR*)desc;
109 EndpointDescriptor.Add(endpointDescriptor1);
110 }
111 }
112 }
113 // The iManufacturer, iProduct and iSerialNumber entries in the
114 // device descriptor are really just indexes. So, we have to
115 // request a string descriptor to get the values for those strings.
116 if (DeviceDescriptor != null) {
117 if (DeviceDescriptor.iManufacturer > 0) Manufacturer = GetStringDescriptor(handel, DeviceDescriptor.iManufacturer);
118 if (DeviceDescriptor.iProduct > 0) Product = GetStringDescriptor(handel, DeviceDescriptor.iProduct);
119 if (DeviceDescriptor.iSerialNumber > 0) SerialNumber = GetStringDescriptor(handel, DeviceDescriptor.iSerialNumber);
120 }
121 } 168 }
122 // Get the Driver Key Name (usefull in locating a device) 169 return new UsbHub(null, nodeConnection, hubinterface[0], false);
123 USB_NODE_CONNECTION_DRIVERKEY_NAME DriverKeyStruct = new USB_NODE_CONNECTION_DRIVERKEY_NAME(); 170 }
124 DriverKeyStruct.ConnectionIndex = adapterNumber;
125 // Use an IOCTL call to request the Driver Key Name
126 if (Kernel32.DeviceIoControl(handel, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_DRIVERKEY_NAME, ref DriverKeyStruct, Marshal.SizeOf(DriverKeyStruct), out DriverKeyStruct, Marshal.SizeOf(DriverKeyStruct), out nBytesReturned, IntPtr.Zero)) {
127 DriverKey = DriverKeyStruct.DriverKeyName;
128 }
129 }
130 }
131
132 private unsafe String GetStringDescriptor(SafeFileHandle handel, Byte id) {
133 int nBytes = UsbApi.MAX_BUFFER_SIZE;
134 int nBytesReturned = 0;
135 Byte[] buffer = new Byte[nBytes];
136 fixed (Byte* bufferptr = buffer) {
137 // Build a request for string descriptor.
138 USB_DESCRIPTOR_REQUEST Request = new USB_DESCRIPTOR_REQUEST();
139 Request.ConnectionIndex = AdapterNumber;
140 Request.SetupPacket.wValue = (ushort)((UsbApi.USB_STRING_DESCRIPTOR_TYPE << 8) + id);
141 Request.SetupPacket.wLength = (ushort)(nBytes - Marshal.SizeOf(Request));
142 Request.SetupPacket.wIndex = 0x409; // The language code.
143 // Use an IOCTL call to request the string descriptor.
144 if (Kernel32.DeviceIoControl(handel, UsbApi.IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, ref Request, Marshal.SizeOf(Request), (IntPtr)bufferptr, nBytes, out nBytesReturned, IntPtr.Zero)) {
145 if (nBytesReturned < nBytes) buffer[nBytesReturned] = 0;
146 if (nBytesReturned + 1 < nBytes) buffer[nBytesReturned + 1] = 0;
147 // The location of the string descriptor is immediately after
148 // the Request structure. Because this location is not "covered"
149 // by the structure allocation, we're forced to zero out this
150 // chunk of memory by using the StringToHGlobalAuto() hack above
151 //*(UsbApi.USB_STRING_DESCRIPTOR*)(bufferptr + Marshal.SizeOf(Request));
152 USB_STRING_DESCRIPTOR StringDesc = (USB_STRING_DESCRIPTOR)Marshal.PtrToStructure((IntPtr)(bufferptr + Marshal.SizeOf(Request)), typeof(USB_STRING_DESCRIPTOR));
153 //return StringDesc.bString;
154 int len = Math.Min(nBytesReturned - Marshal.SizeOf(Request) - 2, StringDesc.bLength);
155 return Encoding.Unicode.GetString(buffer, 2 + Marshal.SizeOf(Request), len);
156 } else {
157 return null;
158 }
159 }
160 }
161
162 /*public static UsbDevice GetUsbDevice(DeviceNode node) {
163 String[] hubinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_HUB);
164 if (hubinterface != null && hubinterface.Length > 0) return new UsbHub(null, hubinterface[0], false);
165 String[] devinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_DEVICE); 171 String[] devinterface = node.GetInterfaces(UsbApi.GUID_DEVINTERFACE_USB_DEVICE);
166 if (devinterface == null || devinterface.Length == 0) throw new InvalidOperationException("Device is not an USB device"); 172 if (devinterface == null || devinterface.Length == 0) return null;
167 DeviceNode parent = node.GetParent(); 173 DeviceNode parent = node.GetParent();
168 if (parent == null) throw new InvalidOperationException("Could not find parent hub device"); 174 if (parent == null) return null;
169 UsbHub usbhub = GetUsbDevice(parent) as UsbHub; 175 UsbHub usbhub = GetUsbDevice(parent) as UsbHub;
170 if (usbhub == null) throw new InvalidOperationException("Could not find parent hub device"); 176 if (usbhub == null) return null;
171 String driverkey = node.DriverKey; 177 String driverkey = node.DriverKey;
172 foreach (UsbDevice usbdev in usbhub.Devices) { 178 foreach (UsbDevice usbdev in usbhub.Devices) {
173 if (driverkey.Equals(usbdev.DriverKey, StringComparison.InvariantCultureIgnoreCase)) return usbdev; 179 if (driverkey.Equals(usbdev.DriverKey, StringComparison.InvariantCultureIgnoreCase)) return usbdev;
174 } 180 }
175 throw new InvalidOperationException("Could not find device on parent hub"); 181 return null;*/
176 //return null; 182 }
177 }*/ 183
184 #region IUsbInterface Members
185 byte IUsbInterface.Configuration { get { throw new NotImplementedException(); } }
186 void IUsbInterface.Close() { }
187 public virtual int GetDescriptor(byte descriptorType, byte index, short langId, byte[] buffer, int offset, int length) {
188 using (SafeFileHandle handle = UsbHub.OpenHandle(DevicePath)) return UsbHub.GetDescriptor(handle, AdapterNumber, descriptorType, index, langId, buffer, offset, length);
189 }
190 string IUsbInterface.GetString(short langId, byte stringIndex) {
191 return UsbStringDescriptor.GetStringFromDevice(this, stringIndex, langId);
192 }
193 int IUsbInterface.BulkWrite(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
194 int IUsbInterface.BulkRead(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
195 void IUsbInterface.BulkReset(byte endpoint) { throw new NotImplementedException(); }
196 int IUsbInterface.InterruptWrite(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
197 int IUsbInterface.InterruptRead(byte endpoint, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
198 void IUsbInterface.InterruptReset(byte endpoint) { throw new NotImplementedException(); }
199 int IUsbInterface.ControlWrite(UsbControlRequestType requestType, byte request, short value, short index, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
200 int IUsbInterface.ControlRead(UsbControlRequestType requestType, byte request, short value, short index, byte[] buffer, int offset, int length) { throw new NotImplementedException(); }
201 UsbPipeStream IUsbInterface.GetBulkStream(byte endpoint) { throw new NotImplementedException(); }
202 UsbPipeStream IUsbInterface.GetInterruptStream(byte endpoint) { throw new NotImplementedException(); }
203 void IDisposable.Dispose() { }
204 #endregion
178 } 205 }
206
179 } 207 }