如何获得Android 5.0以上版本的工作蓝牙HID主机 [英] How to get Bluetooth HID host on Android 5.0+ working

问题描述

我有一个蓝牙HID设备，我需要得到的工作的上一个的Nexus 7平板电脑2013运行我的应用程序运行自定义生成于Android 5.0分叉。所以：

I have a bluetooth HID device that I need to get working with my app running on a Nexus 7 2013 tablet running custom build forked from android 5.0. so:

• @hide 不是一个约束


• 更改AOSP允许


• 任何Android版本5.0 * - * 5.1细

• @hide is not a constraint
• Changes to AOSP are permitted
• Any Android version 5.0* - 5.1* is fine

现在我的设备带有键盘，并发送和接受一些特定厂商的HID报告。通过的工作的，我的意思是发送和接收的所有HID报告

Now my device has a keyboard, AND sends and accepts some vendor-specific HID reports. By working, I mean sending and receiving all HID reports

，似乎是：

1. 的 HidService 服务广播 BluetoothInputDevice.ACTION_REPORT 意图所有输入HID报告[我的应用程序有一个广播接收器接收 ACTION_REPORT 意图]

1. The HidService service broadcasts BluetoothInputDevice.ACTION_REPORT intents for all input HID reports [My app has a BroadcastReceiver to receive ACTION_REPORT intents]

BluetoothInputDevice 提供了像 setReport其他接口（），送出数据（） ，连接（）等通过 HidService 。

BluetoothInputDevice provides other interfaces like setReport(), sendData(), connect() etc through HidService.

BluetoothInputDevice 使用 HidService 来提供HID设备接口。

BluetoothInputDevice uses HidService to provide HID device interface.

HidService.java 是JNI封装在 com_android_bluetooth_hid.cpp

com_android_bluetooth_hid.cpp ，在 HidService 的初始化，将注册自己的回调Bluedroid

com_android_bluetooth_hid.cpp, on initialization of HidService, will register its own callbacks to Bluedroid

我添加日志AOSP追踪电话，似乎所有上述是正确的。

I have added logs to AOSP to trace calls and seems all the above is correct.

但

的 get_report_callback（）在 com_android_bluetooth_hid.cpp 不会被调用，因此，我的应用程序不接受 ACTION_REPORT 意图。

The get_report_callback() in com_android_bluetooth_hid.cpp never gets called, and consequently, My app does not receive ACTION_REPORT intents.

如果我发送无效 ACTION_REPORT 从我的应用程序的意图，那么我的广播接收器接收的意图。

If I send dummy ACTION_REPORT intents from my app, then my BroadcastReceiver receives those intents.

我的HID设备连接和工作，因为我看到在关键领域的EditText我的应用程序内收到。

My HID device is connected and working, as I do see keys received in edittext field within my app.

有什么办法，我可以接受我的应用我的设备的HID报告？通过意图或通过任何其他方式？

Is there any way I could receive my device's HID reports in my app? through intents or through any other way?

如果我能获得通过意图，是否有我错过了任何一步？我基本上只是广播接收器意图过滤器和蓝牙和 BLUETOOTH_ADMIN 接收HID报告的权限。

If I could receive through Intents, is there any step that I missed? I basically just have BroadcastReceiver with intent filter and BLUETOOTH and BLUETOOTH_ADMIN permissions for receiving HID reports.

如果必须使用任何其它方法，请建议

If any other method must be used, please suggest.

推荐答案

BluetoothInputDevice没有在所有的工作。

BluetoothInputDevice didn't work at all.

我用的/ dev / hidraw *从C code访问蓝牙hidraw设备。

I used /dev/hidraw* from C code to access the bluetooth hidraw devices.

MAC地址并非为/ dev / hidraw *节点的报道。

mac address is NOT reported by /dev/hidraw* nodes.

在Android的5.x中他们的工作和所有的设置/发送/ recv的报告操作工作。得到未经测试。

In Android 5.x they work and all set/send/recv report operations are working. get not tested.

在Android版6.x中，​​只有recv的操作是从/ dev / hidraw工作。设置/发送不工作。得到未经测试。

On Android 6.x, only recv operation is working from /dev/hidraw. set/send are not working. get not tested.

我将发布更新时，我有更好的回答。

I will post update when I have better answer.

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