应用程序未检测到USB HID设备

Question

＆＃13;

＆＃13;

private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
		public void onReceive(Context context, Intent intent) {
			String action = intent.getAction();
			if (ACTION_USB_PERMISSION.equals(action)) {
				synchronized (this) {

					setDevice(intent);
				}
			}
			if (UsbManager.ACTION_USB_DEVICE_ATTACHED.equals(action)) {
				synchronized (this) {
					setDevice(intent);
				}
				if (device == null) {
					mLog("device connected");
				}
			}
			if (UsbManager.ACTION_USB_DEVICE_DETACHED.equals(action)) {
				if (device != null) {
					device = null;
					btnSend.setEnabled(false);
				}
				mLog("device disconnected");
			}
		}

		private void setDevice(Intent intent) {
			device = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
			if (device != null && intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
				mLog("Selected device VID:" + Integer.toHexString(device.getVendorId()) + " PID:" + Integer.toHexString(device.getProductId()));
				connection = mUsbManager.openDevice(device);
				intf = device.getInterface(0);
				if (null == connection) {
					mLog("(unable to establish connection)\n");
				} else {
					connection.claimInterface(intf, true);
				}
				try {
					if (UsbConstants.USB_DIR_OUT == intf.getEndpoint(1).getDirection()) {
						endPointWrite = intf.getEndpoint(1);
					}
				} catch (Exception e) {
					Log.e("endPointWrite", "Device have no endPointWrite", e);
				}
				try {
					if (UsbConstants.USB_DIR_IN == intf.getEndpoint(0).getDirection()) {
						endPointRead = intf.getEndpoint(0);
						packetSize = endPointRead.getMaxPacketSize();
					}
				} catch (Exception e) {
					Log.e("endPointWrite", "Device have no endPointRead", e);
				}
				btnSend.setEnabled(true);
			}
		}
	};

void showListOfDevices() {
		btnSend.setEnabled(false);
		AlertDialog.Builder builder = new AlertDialog.Builder(this);

		mUsbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
		if (mUsbManager.getDeviceList().size() == 0) {
			builder.setTitle(MESSAGE_CONNECT_YOUR_USB_HID_DEVICE);
		} else {
			builder.setTitle(MESSAGE_SELECT_YOUR_USB_HID_DEVICE);
		}
		List<CharSequence> list = new LinkedList<CharSequence>();
		for (UsbDevice usbDevice : mUsbManager.getDeviceList().values()) {
			list.add("devID:" + usbDevice.getDeviceId() + " VID:" + Integer.toHexString(usbDevice.getVendorId()) + " PID:" + Integer.toHexString(usbDevice.getProductId()) + " " + usbDevice.getDeviceName());
		}
		final CharSequence devicesName[] = new CharSequence[mUsbManager.getDeviceList().size()];
		list.toArray(devicesName);
		builder.setItems(devicesName, new DialogInterface.OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				device = (UsbDevice) mUsbManager.getDeviceList().values().toArray()[which];
				mUsbManager.requestPermission(device, mPermissionIntent);
			}
		});
		builder.setCancelable(true);
		builder.show();
	}

＆＃13;

＆＃13;

＆＃13;

我开发了一个应用程序，用于从USB HID设备读取串行数据。它在Nexus 7平板电脑上运行良好。  现在我试图从我的应用程序中读取连接到pcDuino3（Android OS 4.2.2）的USB HID设备的传入串行数据。但我无法从我的应用程序中检测到USB HID设备。我使用了USB Host API。

然而，我能够通过终端窗口检测设备。 我的设备详细信息

产品编号：0010

供应商ID：1658

以下是我的项目的一些观察。 在终端模拟器中当我发出命令＆＃34; ls / dev / usb＆＃34;时，我得到以下输出：

@android：/ $ ls / dev / usb

hiddev0

input3-1.1

input3-1.2

input3-1.4

当我发出命令＆＃34; busybox lsusb＆＃34;我得到以下输出：

@android：/ $ busybox lsusb

总线001设备002：ID 0bda：8179

总线003设备002：ID 1a40：0101

总线001设备001：ID 1d6b：0002

总线002设备001：ID 1d6b：0001

。 。

。 。

总线003设备007：ID 1658：0010

任何人都可以帮我解决这个问题或者让我知道发生了什么事吗？