Mercurial > hg > ucis.core

annotate USBLib/Windows/USB/UsbDevice.cs @ 67:2d16447eff12

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Simplified USB communication code, added functions to abort pipe transfers
author Ivo Smits <Ivo@UCIS.nl>
date Wed, 16 Oct 2013 01:11:49 +0200
parents abe0d55a2201
children e811297f5aa4
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1 using System;
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2 using System.ComponentModel;
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3 using System.Runtime.InteropServices;
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4 using Microsoft.Win32.SafeHandles;
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5 using UCIS.HWLib.Windows.Devices;
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6 using UCIS.USBLib.Communication;
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7 using UCIS.USBLib.Descriptor;
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8 using UCIS.USBLib.Internal.Windows;
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10 namespace UCIS.HWLib.Windows.USB {
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11 public class UsbDevice : IUsbDevice, IUsbInterface {
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12 internal static USB_NODE_CONNECTION_INFORMATION_EX GetNodeConnectionInformation(SafeFileHandle handle, UInt32 port) {
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13 int nBytes = Marshal.SizeOf(typeof(USB_NODE_CONNECTION_INFORMATION_EX));
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14 USB_NODE_CONNECTION_INFORMATION_EX nodeConnection = new USB_NODE_CONNECTION_INFORMATION_EX();
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15 nodeConnection.ConnectionIndex = port;
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16 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, ref nodeConnection, nBytes, out nodeConnection, nBytes, out nBytes, IntPtr.Zero))
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17 throw new Win32Exception(Marshal.GetLastWin32Error());
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18 return nodeConnection;
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19 }
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20
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21 private Boolean HasNodeConnectionInfo = false;
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22 private USB_NODE_CONNECTION_INFORMATION_EX NodeConnectionInfo;
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24 private void GetNodeConnectionInfo() {
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25 if (HasNodeConnectionInfo) return;
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26 if (Parent == null) {
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27 HasNodeConnectionInfo = true;
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28 return;
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29 }
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30 using (SafeFileHandle handle = Parent.OpenHandle()) NodeConnectionInfo = GetNodeConnectionInformation(handle, AdapterNumber);
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31 HasNodeConnectionInfo = true;
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32 }
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33 internal void SetNodeConnectionInfo(USB_NODE_CONNECTION_INFORMATION_EX nci) {
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34 NodeConnectionInfo = nci;
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35 HasNodeConnectionInfo = true;
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36 }
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38 public UsbDeviceDescriptor DeviceDescriptor { get { GetNodeConnectionInfo(); return NodeConnectionInfo.DeviceDescriptor; } }
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39
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40 public bool IsHub { get { GetNodeConnectionInfo(); return NodeConnectionInfo.DeviceIsHub != 0; } }
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41 public bool IsConnected { get { GetNodeConnectionInfo(); return NodeConnectionInfo.ConnectionStatus == USB_CONNECTION_STATUS.DeviceConnected; } }
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42 public string Status { get { GetNodeConnectionInfo(); return NodeConnectionInfo.ConnectionStatus.ToString(); } }
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43 public string Speed { get { GetNodeConnectionInfo(); return NodeConnectionInfo.Speed.ToString(); } }
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44 public Byte CurrentConfigurationValue { get { GetNodeConnectionInfo(); return NodeConnectionInfo.CurrentConfigurationValue; } }
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45 public UInt16 DeviceAddress { get { GetNodeConnectionInfo(); return NodeConnectionInfo.DeviceAddress; } }
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46 public UInt32 NumberOfOpenPipes { get { GetNodeConnectionInfo(); return NodeConnectionInfo.NumberOfOpenPipes; } }
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48 public int NumConfigurations { get { return DeviceDescriptor.NumConfigurations; } }
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49 public int VendorID { get { return DeviceDescriptor.VendorID; } }
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50 public int ProductID { get { return DeviceDescriptor.ProductID; } }
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52 private String GetStringSafe(Byte id) {
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53 if (id == 0) return null;
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54 String s = UsbStringDescriptor.GetStringFromDevice(this, id, 0);
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55 if (s == null) return s;
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56 return s.Trim(' ', '\0');
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57 }
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59 public string Manufacturer { get { return GetStringSafe(DeviceDescriptor.ManufacturerStringID); } }
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60 public string Product { get { return GetStringSafe(DeviceDescriptor.ProductStringID); } }
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61 public string SerialNumber { get { return GetStringSafe(DeviceDescriptor.SerialNumberStringID); } }
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62 public String DriverKey {
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63 get {
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64 if (mParent != null) {
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65 using (SafeFileHandle handle = mParent.OpenHandle()) {
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66 USB_NODE_CONNECTION_DRIVERKEY_NAME DriverKeyStruct = new USB_NODE_CONNECTION_DRIVERKEY_NAME();
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67 int nBytes = Marshal.SizeOf(DriverKeyStruct);
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68 DriverKeyStruct.ConnectionIndex = AdapterNumber;
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69 if (!Kernel32.DeviceIoControl(handle, UsbApi.IOCTL_USB_GET_NODE_CONNECTION_DRIVERKEY_NAME, ref DriverKeyStruct, nBytes, out DriverKeyStruct, nBytes, out nBytes, IntPtr.Zero))
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70 return null;
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71 return DriverKeyStruct.DriverKeyName;
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72 }
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73 }
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74 if (mDeviceNode != null) return mDeviceNode.DriverKey;
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75 return null;
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76 }
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77 }
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78
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79 public virtual string DeviceDescription { get { return DeviceNode == null ? null : DeviceNode.DeviceDescription; } }
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80 public string DeviceID { get { return DeviceNode == null ? null : DeviceNode.DeviceID; } }
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81
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82 protected DeviceNode mDeviceNode = null;
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83 public DeviceNode DeviceNode {
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84 get {
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85 String dk = DriverKey;
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86 if (mDeviceNode == null && dk != null) {
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87 foreach (DeviceNode node in DeviceNode.GetDevices("USB")) {
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88 if (dk.Equals(node.DriverKey, StringComparison.InvariantCultureIgnoreCase)) {
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89 mDeviceNode = node;
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90 break;
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91 }
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92 }
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93 }
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94 return mDeviceNode;
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95 }
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96 }
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97 protected UsbHub mParent = null;
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98 private UInt32 mAdapterNumber = 0;
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99 private UsbHub GetParent() {
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100 if (mParent == null && mDeviceNode != null) {
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101 mParent = UsbHub.GetHubForDeviceNode(mDeviceNode.GetParent());
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102 if (mParent != null) {
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103 UsbDevice self = mParent.FindChildForDeviceNode(mDeviceNode);
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104 if (self != null) mAdapterNumber = self.AdapterNumber;
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105 }
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106 }
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107 return mParent;
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108 }
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109 public UsbHub Parent { get { return GetParent(); } }
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110 public UInt32 AdapterNumber { get { GetParent(); return mAdapterNumber; } }
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111
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112 internal UsbDevice(DeviceNode devnode, UsbHub parent, uint port) {
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113 this.mDeviceNode = devnode;
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114 this.mParent = parent;
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115 this.mAdapterNumber = port;
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116 }
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117
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118 public static UsbDevice GetUsbDevice(DeviceNode node) {
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119 if (node == null) return null;
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120 //UsbController controller = UsbController.GetControllerForDeviceNode(node);
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121 //if (controller != null) return controller;
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122 UsbHub hub = UsbHub.GetHubForDeviceNode(node);
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123 if (hub != null) return hub;
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124 DeviceNode parent = node.GetParent();
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125 if (parent == null) return null;
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126 if (parent.Service == "usbccgp") return GetUsbDevice(parent);
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127 hub = UsbHub.GetHubForDeviceNode(parent);
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128 if (hub == null) return null;
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129 return hub.FindChildForDeviceNode(node);
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130 }
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131
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132 #region IUsbInterface and IUsbDevice Members
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133 public int GetDescriptor(byte descriptorType, byte index, short langId, byte[] buffer, int offset, int length) {
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134 using (SafeFileHandle handle = Parent.OpenHandle()) {
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135 int szRequest = Marshal.SizeOf(typeof(USB_DESCRIPTOR_REQUEST));
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136 USB_DESCRIPTOR_REQUEST request = new USB_DESCRIPTOR_REQUEST();
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137 request.ConnectionIndex = AdapterNumber;
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138 request.SetupPacket.Value = (short)((descriptorType << 8) + index);
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139 request.SetupPacket.Index = (short)langId;
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140 request.SetupPacket.Length = (short)length;
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141 int nBytes = length + szRequest;
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142 Byte[] bigbuffer = new Byte[nBytes];
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143 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)) {
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144 int err = Marshal.GetLastWin32Error();
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145 if (err != 2 && err != 31 && err != 87) throw new Win32Exception(err);
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146 return 0;
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147 }
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148 nBytes -= szRequest;
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149 if (nBytes > length) nBytes = length;
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150 if (nBytes < 0) return 0;
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151 if (nBytes > 0) Buffer.BlockCopy(bigbuffer, szRequest, buffer, offset, nBytes);
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152 return nBytes;
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153 }
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154 }
65
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155 byte IUsbInterface.Configuration { get { return CurrentConfigurationValue; } }
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156 byte IUsbDevice.Configuration { get { return CurrentConfigurationValue; } set { throw new NotSupportedException(); } }
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157 void IUsbDevice.ResetDevice() { throw new NotImplementedException(); }
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158 IUsbDeviceRegistry IUsbDevice.Registry { get { throw new NotImplementedException(); } }
58
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159 void IUsbInterface.Close() { }
67
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160 int IUsbInterface.PipeTransfer(byte endpoint, byte[] buffer, int offset, int length) { throw new NotSupportedException(); }
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161 void IUsbInterface.PipeReset(byte endpoint) { throw new NotImplementedException(); }
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162 void IUsbInterface.PipeAbort(byte endpoint) { throw new NotImplementedException(); }
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163 int IUsbInterface.ControlTransfer(UsbControlRequestType requestType, byte request, short value, short index, byte[] buffer, int offset, int length) { throw new NotSupportedException(); }
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164 UsbPipeStream IUsbInterface.GetPipeStream(byte endpoint) { throw new NotSupportedException(); }
58
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165 void IDisposable.Dispose() { }
60
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166 void IUsbDevice.ClaimInterface(int interfaceID) { }
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167 void IUsbDevice.ReleaseInterface(int interfaceID) { }
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168 #endregion
21
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169 }
58
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170 }