android - Ble 配对失败

Question

我参与了一个 Android APP，它与我们公司的 Bt 芯片进行 BLE 连接和配对。 APP作为BLE central角色，Bt芯片作为BLE peripheral角色。

APP在Android 4.4或5.0智能手机上运行时，BLE连接配对正常。当APP在Android 5.1或最新版本6.0上运行时，BLE配对终止并出现错误码(错误码:13)，而BLE连接成功。这是飞行日志:

4,148   0x50654c1d  0x0000  1   LL_VERSION_IND      24      2015/12/3 14:13:39.600368   
4,160   0x50654c1d  0x0001  2   LL_VERSION_IND      24   00:00:00.048473    2015/12/3 14:13:39.648841   
4,163   0x50654c1d  0x0002  1   LL_FEATURE_REQ      27   00:00:00.048522    2015/12/3 14:13:39.697363   
4,169   0x50654c1d  0x0003  2   LL_FEATURE_RSP      27   00:00:00.049066    2015/12/3 14:13:39.746429   
4,179   0x50654c1d  0x0004  1   LL_CONNECTION_UPDATE_REQ    0x000a  30   00:00:00.048436    2015/12/3 14:13:39.794865   
4,234   0x50654c1d  0x000b  1   LL_ENC_REQ      41   00:00:00.303755    2015/12/3 14:13:40.098620   
4,237   0x50654c1d  0x000c  2   LL_ENC_RSP      31   00:00:00.007727    2015/12/3 14:13:40.106347   
4,244   0x50654c1d  0x000d  2   LL_START_ENC_REQ        19   00:00:00.007500    2015/12/3 14:13:40.113847   
4,245   0x50654c1d  0x000e  M   LL_START_ENC_RSP        23   00:00:00.007273    2015/12/3 14:13:40.121120   
4,248   0x50654c1d  0x000f  S   LL_START_ENC_RSP        23   00:00:00.007726    2015/12/3 14:13:40.128846   
4,392   0x50654c1d  0x004a  M   LL_CONNECTION_UPDATE_REQ    0x0050  34   00:00:00.442275    2015/12/3 14:13:40.571121   
4,794   0x50654c1d  0x008c  M   LL_CHANNEL_MAP_REQ  0x0093  30   00:00:03.002545    2015/12/3 14:13:43.573666   
7,168   0x50654c1d  0x0131  M   LL_CHANNEL_MAP_REQ  0x0138  30   00:00:08.043797    2015/12/3 14:13:51.617463   
10,065  0x50654c1d  0x0261  M   LL_CHANNEL_MAP_REQ  0x0268  30   00:00:14.820121    2015/12/3 14:14:06.437584   
10,449  0x50654c1d  0x029d  M   LL_TERMINATE_IND        24   00:00:02.925044    2015/12/3 14:14:09.362628

我的Bt主机程序(基于Bt芯片)接收到CONNECTION_PARAMETER_UPDATE_COMP_IND事件，然后接收到LE_DEVICE_DISCONNECT_COMP_IND事件。我猜断开连接 BLE 的操作是由 Android Bt 堆栈完成的。

在Android 4.4或5.0中，没有接收到CONNECTION_PARAMETER_UPDATE_COMP_IND事件，请问这是怎么回事，如何在Android 5.1或6.0上使BLE配对成功。任何帮助将不胜感激。

Answer 1

对于蓝牙低功耗设备的查找和配对，支持两种方式

1. 对于kitkat版本及以下

   startLeScan() 
   

此方法将BluetoothAdapter.LeScanCallback作为参数

1. 适用于 Lollipop 版本及以上

   mBluetoothLeScanner = mBluetoothAdapter.getBluetoothLeScanner();
   
   mBluetoothLeScanner.startScan(filters, settings, mScanCallback);
   

   并且您需要将回调定义为流以获取响应

   private ScanCallback mScanCallback = new ScanCallback() {
   @Override
   public void onScanResult(int callbackType, ScanResult result) {
   
   }
   
   @Override
   public void onBatchScanResults(List<ScanResult> results) {
   
   }
   
   @Override
   public void onScanFailed(int errorCode) {
   
   }
   };