我有一台配备 Blue Gecko BLE 的设备，在各种 Android 手机和平板电脑上一切似乎都工作正常：连接、数据传输以及断开连接后重新连接。注意：我们不配对我们的设备，它只是连接，并且我们不使用自动连接。
现在的问题是：有时某些设备的电话设置连接在工作几周后会停止运行。我不知道这种情况何时或为何发生，但之后就无法使用之前完美运行的同一部手机重新连接设备。该设备与其他手机仍可正常使用。而且这款手机可以与其他设备配合使用。我们尝试了各种技巧：重新启动手机、卸载并重新安装应用程序、重置设备。这些都不起作用。我们能够重新连接的唯一方法是从手机设置中删除蓝牙数据（重置网络和蓝牙或仅从手机应用程序设置中删除蓝牙数据）。原因是什么？我们该如何解决这个问题？有任何想法吗？
线索：
从电话中查看 btsnoop_hci.log，似乎当连接开始失败时，对“Sent LE Create Connection”的响应是“Command disallowed”。
查看 logcat，我看到“获得状态 133 和状态 0”，这会导致我们的应用程序中的蓝牙重置。
连接状态检查每 5 秒进行一次，然后重新连接...如果需要的话。
出现问题时，使用同一部手机的其他应用程序无法连接到该设备。就像设备被列入黑名单一样，可以通过删除蓝牙数据来清除。
我希望有人能够帮助解决这个问题。
提前致谢！
EDIT:我被要求提供一些 HCI 日志，所以就在这里。帧 28305 和 28309 具有创建连接命令，而帧 28306 和 28310 具有状态响应：“命令不允许 (0x0c)”
No. Time Arrival Time Destination Info Protocol BD_ADDR Destination Source Unexpected event Initiator Filter Policy
28304 93430.042972 Aug 12, 2018 13:39:19.747836000 FLE Daylight Time host Rcvd Command Complete (LE Add Device To White List) HCI_EVT
Frame 28304: 7 bytes on wire (56 bits), 7 bytes captured (56 bits)
Encapsulation type: Bluetooth H4 with linux header (99)
Arrival Time: Aug 12, 2018 13:39:19.747836000 FLE Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1534070359.747836000 seconds
[Time delta from previous captured frame: 0.000870000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 93430.042972000 seconds]
Frame Number: 28304
Frame Length: 7 bytes (56 bits)
Capture Length: 7 bytes (56 bits)
[Frame is marked: False]
[Frame is ignored: False]
Point-to-Point Direction: Received (1)
[Protocols in frame: bluetooth:hci_h4:bthci_evt]
Bluetooth
[Source: controller]
[Destination: host]
Bluetooth HCI H4
[Direction: Rcvd (0x01)]
HCI Packet Type: HCI Event (0x04)
Bluetooth HCI Event - Command Complete
Event Code: Command Complete (0x0e)
Parameter Total Length: 4
Number of Allowed Command Packets: 1
Command Opcode: LE Add Device To White List (0x2011)
0010 00.. .... .... = Opcode Group Field: LE Controller Commands (0x08)
.... ..00 0001 0001 = Opcode Command Field: LE Add Device To White List (0x011)
Status: Success (0x00)
[Command in frame: 28303]
[Command-Response Delta: 0.87ms]
No. Time Arrival Time Destination Info Protocol BD_ADDR Destination Source Unexpected event Initiator Filter Policy
28305 93430.043242 Aug 12, 2018 13:39:19.748106000 FLE Daylight Time controller Sent LE Create Connection HCI_CMD Use White List. Ignore Peer Address
Frame 28305: 29 bytes on wire (232 bits), 29 bytes captured (232 bits)
Encapsulation type: Bluetooth H4 with linux header (99)
Arrival Time: Aug 12, 2018 13:39:19.748106000 FLE Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1534070359.748106000 seconds
[Time delta from previous captured frame: 0.000270000 seconds]
[Time delta from previous displayed frame: 0.000270000 seconds]
[Time since reference or first frame: 93430.043242000 seconds]
Frame Number: 28305
Frame Length: 29 bytes (232 bits)
Capture Length: 29 bytes (232 bits)
[Frame is marked: False]
[Frame is ignored: False]
Point-to-Point Direction: Sent (0)
[Protocols in frame: bluetooth:hci_h4:bthci_cmd]
[Coloring Rule Name: ___conversation_color_filter___06]
[Coloring Rule String: bthci_cmd.opcode == 0x200d]
Bluetooth
[Source: host]
[Destination: controller]
Bluetooth HCI H4
[Direction: Sent (0x00)]
HCI Packet Type: HCI Command (0x01)
Bluetooth HCI Command - LE Create Connection
Command Opcode: LE Create Connection (0x200d)
0010 00.. .... .... = Opcode Group Field: LE Controller Commands (0x08)
.... ..00 0000 1101 = Opcode Command Field: LE Create Connection (0x00d)
Parameter Total Length: 25
Scan Interval: 2048 (1280 msec)
Scan Window: 128 (80 msec)
Initiator Filter Policy: Use White List. Ignore Peer Address (0x01)
Peer Address Type: Public Device Address (0x00)
BD_ADDR: 00:00:00_00:00:00 (00:00:00:00:00:00)
Own Address Type: Random Device Address (0x01)
Connection Interval Min: 24 (30 msec)
Connection Interval Max: 40 (50 msec)
Connection Latency: 0 (number events)
Supervision Timeout: 2000 (20 sec)
Min CE Length: 0 (0 msec)
Max CE Length: 0 (0 msec)
[Response in frame: 28306]
[Command-Response Delta: 0.607ms]
No. Time Arrival Time Destination Info Protocol BD_ADDR Destination Source Unexpected event Initiator Filter Policy
28306 93430.043849 Aug 12, 2018 13:39:19.748713000 FLE Daylight Time host Rcvd Command Status (LE Create Connection) HCI_EVT
Frame 28306: 7 bytes on wire (56 bits), 7 bytes captured (56 bits)
Encapsulation type: Bluetooth H4 with linux header (99)
Arrival Time: Aug 12, 2018 13:39:19.748713000 FLE Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1534070359.748713000 seconds
[Time delta from previous captured frame: 0.000607000 seconds]
[Time delta from previous displayed frame: 0.000607000 seconds]
[Time since reference or first frame: 93430.043849000 seconds]
Frame Number: 28306
Frame Length: 7 bytes (56 bits)
Capture Length: 7 bytes (56 bits)
[Frame is marked: False]
[Frame is ignored: False]
Point-to-Point Direction: Received (1)
[Protocols in frame: bluetooth:hci_h4:bthci_evt]
[Coloring Rule Name: ___conversation_color_filter___01]
[Coloring Rule String: bthci_evt.status == 0x0c]
Bluetooth
[Source: controller]
[Destination: host]
Bluetooth HCI H4
[Direction: Rcvd (0x01)]
HCI Packet Type: HCI Event (0x04)
Bluetooth HCI Event - Command Status
Event Code: Command Status (0x0f)
Parameter Total Length: 4
Status: Command Disallowed (0x0c)
Number of Allowed Command Packets: 1
Command Opcode: LE Create Connection (0x200d)
0010 00.. .... .... = Opcode Group Field: LE Controller Commands (0x08)
.... ..00 0000 1101 = Opcode Command Field: LE Create Connection (0x00d)
[Command in frame: 28305]
[Command-Response Delta: 0.607ms]
No. Time Arrival Time Destination Info Protocol BD_ADDR Destination Source Unexpected event Initiator Filter Policy
28307 93430.044054 Aug 12, 2018 13:39:19.748918000 FLE Daylight Time controller Sent LE Create Connection Cancel HCI_CMD
Frame 28307: 4 bytes on wire (32 bits), 4 bytes captured (32 bits)
Encapsulation type: Bluetooth H4 with linux header (99)
Arrival Time: Aug 12, 2018 13:39:19.748918000 FLE Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1534070359.748918000 seconds
[Time delta from previous captured frame: 0.000205000 seconds]
[Time delta from previous displayed frame: 0.000205000 seconds]
[Time since reference or first frame: 93430.044054000 seconds]
Frame Number: 28307
Frame Length: 4 bytes (32 bits)
Capture Length: 4 bytes (32 bits)
[Frame is marked: False]
[Frame is ignored: False]
Point-to-Point Direction: Sent (0)
[Protocols in frame: bluetooth:hci_h4:bthci_cmd]
Bluetooth
[Source: host]
[Destination: controller]
Bluetooth HCI H4
[Direction: Sent (0x00)]
HCI Packet Type: HCI Command (0x01)
Bluetooth HCI Command - LE Create Connection Cancel
Command Opcode: LE Create Connection Cancel (0x200e)
0010 00.. .... .... = Opcode Group Field: LE Controller Commands (0x08)
.... ..00 0000 1110 = Opcode Command Field: LE Create Connection Cancel (0x00e)
Parameter Total Length: 0
[Response in frame: 28308]
[Command-Response Delta: 2.721ms]
No. Time Arrival Time Destination Info Protocol BD_ADDR Destination Source Unexpected event Initiator Filter Policy
28308 93430.046775 Aug 12, 2018 13:39:19.751639000 FLE Daylight Time host Rcvd Command Complete (LE Create Connection Cancel) HCI_EVT
Frame 28308: 7 bytes on wire (56 bits), 7 bytes captured (56 bits)
Encapsulation type: Bluetooth H4 with linux header (99)
Arrival Time: Aug 12, 2018 13:39:19.751639000 FLE Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1534070359.751639000 seconds
[Time delta from previous captured frame: 0.002721000 seconds]
[Time delta from previous displayed frame: 0.002721000 seconds]
[Time since reference or first frame: 93430.046775000 seconds]
Frame Number: 28308
Frame Length: 7 bytes (56 bits)
Capture Length: 7 bytes (56 bits)
[Frame is marked: False]
[Frame is ignored: False]
Point-to-Point Direction: Received (1)
[Protocols in frame: bluetooth:hci_h4:bthci_evt]
[Coloring Rule Name: ___conversation_color_filter___01]
[Coloring Rule String: bthci_evt.status == 0x0c]
Bluetooth
[Source: controller]
[Destination: host]
Bluetooth HCI H4
[Direction: Rcvd (0x01)]
HCI Packet Type: HCI Event (0x04)
Bluetooth HCI Event - Command Complete
Event Code: Command Complete (0x0e)
Parameter Total Length: 4
Number of Allowed Command Packets: 1
Command Opcode: LE Create Connection Cancel (0x200e)
0010 00.. .... .... = Opcode Group Field: LE Controller Commands (0x08)
.... ..00 0000 1110 = Opcode Command Field: LE Create Connection Cancel (0x00e)
Status: Command Disallowed (0x0c)
[Command in frame: 28307]
[Command-Response Delta: 2.721ms]
No. Time Arrival Time Destination Info Protocol BD_ADDR Destination Source Unexpected event Initiator Filter Policy
28309 93434.163337 Aug 12, 2018 13:39:23.868201000 FLE Daylight Time controller Sent LE Create Connection HCI_CMD Use Peer Address
Frame 28309: 29 bytes on wire (232 bits), 29 bytes captured (232 bits)
Encapsulation type: Bluetooth H4 with linux header (99)
Arrival Time: Aug 12, 2018 13:39:23.868201000 FLE Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1534070363.868201000 seconds
[Time delta from previous captured frame: 4.116562000 seconds]
[Time delta from previous displayed frame: 4.116562000 seconds]
[Time since reference or first frame: 93434.163337000 seconds]
Frame Number: 28309
Frame Length: 29 bytes (232 bits)
Capture Length: 29 bytes (232 bits)
[Frame is marked: False]
[Frame is ignored: False]
Point-to-Point Direction: Sent (0)
[Protocols in frame: bluetooth:hci_h4:bthci_cmd]
[Coloring Rule Name: ___conversation_color_filter___06]
[Coloring Rule String: bthci_cmd.opcode == 0x200d]
Bluetooth
[Source: host]
[Destination: controller]
Bluetooth HCI H4
[Direction: Sent (0x00)]
HCI Packet Type: HCI Command (0x01)
Bluetooth HCI Command - LE Create Connection
Command Opcode: LE Create Connection (0x200d)
0010 00.. .... .... = Opcode Group Field: LE Controller Commands (0x08)
.... ..00 0000 1101 = Opcode Command Field: LE Create Connection (0x00d)
Parameter Total Length: 25
Scan Interval: 96 (60 msec)
Scan Window: 48 (30 msec)
Initiator Filter Policy: Use Peer Address (0x00)
Peer Address Type: Public Device Address (0x00)
BD_ADDR: SiliconL_23:5e:25 (90:fd:9f:23:5e:25)
Own Address Type: Random Device Address (0x01)
Connection Interval Min: 24 (30 msec)
Connection Interval Max: 40 (50 msec)
Connection Latency: 0 (number events)
Supervision Timeout: 2000 (20 sec)
Min CE Length: 0 (0 msec)
Max CE Length: 0 (0 msec)
[Response in frame: 28310]
[Command-Response Delta: 8.734ms]
No. Time Arrival Time Destination Info Protocol BD_ADDR Destination Source Unexpected event Initiator Filter Policy
28310 93434.172071 Aug 12, 2018 13:39:23.876935000 FLE Daylight Time host Rcvd Command Status (LE Create Connection) HCI_EVT
Frame 28310: 7 bytes on wire (56 bits), 7 bytes captured (56 bits)
Encapsulation type: Bluetooth H4 with linux header (99)
Arrival Time: Aug 12, 2018 13:39:23.876935000 FLE Daylight Time
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1534070363.876935000 seconds
[Time delta from previous captured frame: 0.008734000 seconds]
[Time delta from previous displayed frame: 0.008734000 seconds]
[Time since reference or first frame: 93434.172071000 seconds]
Frame Number: 28310
Frame Length: 7 bytes (56 bits)
Capture Length: 7 bytes (56 bits)
[Frame is marked: False]
[Frame is ignored: False]
Point-to-Point Direction: Received (1)
[Protocols in frame: bluetooth:hci_h4:bthci_evt]
[Coloring Rule Name: ___conversation_color_filter___01]
[Coloring Rule String: bthci_evt.status == 0x0c]
Bluetooth
[Source: controller]
[Destination: host]
Bluetooth HCI H4
[Direction: Rcvd (0x01)]
HCI Packet Type: HCI Event (0x04)
Bluetooth HCI Event - Command Status
Event Code: Command Status (0x0f)
Parameter Total Length: 4
Status: Command Disallowed (0x0c)
Number of Allowed Command Packets: 1
Command Opcode: LE Create Connection (0x200d)
0010 00.. .... .... = Opcode Group Field: LE Controller Commands (0x08)
.... ..00 0000 1101 = Opcode Command Field: LE Create Connection (0x00d)
[Command in frame: 28309]
[Command-Response Delta: 8.734ms]
EDIT 2:
以下是从 Wireshark 导出的 hci 日志文件的链接：
https://www.dropbox.com/s/6t8hqde4a9mxt0u/btsnoop_hci_1_cut.log?dl=0 https://www.dropbox.com/s/6t8hqde4a9mxt0u/btsnoop_hci_1_cut.log?dl=0
这是与纯文本相同的数据的链接：
https://www.dropbox.com/s/o4lzoyxkg7gk8de/btsnoop_hci_1_cut.TXT?dl=0 https://www.dropbox.com/s/o4lzoyxkg7gk8de/btsnoop_hci_1_cut.TXT?dl=0
应用的过滤器：frame.number > 17025 && frame.number
EDIT 3:
这是连接设备的代码。正如我所说，我没有使用自动连接。我确实希望尽可能可靠、快速地重新连接。如果连接丢失，我会定期（每 5 秒）调用此 connectBLEDevice。
private void connectBLEDevice() {
Log.d(TAG, "Start connect...");
if (btIsConnected) {
Log.e(TAG, "connectBLEDevice: do nothing because btIsConnected");
return;
}
Log.d(TAG, "connectBLEDevice: currentDevice = " + currentDevice);
Log.d(TAG, "connectBLEDevice: BT CONNECTION STATE = " + bluetoothManager.getConnectionState(currentDevice, BluetoothProfile.GATT) + " (0 = disconnected, 1 = connecting, 2 = connected, 3 = disconnecting)");
if (currentDevice != null) {
if (bluetoothManager.getConnectionState(currentDevice, BluetoothProfile.GATT) == BluetoothProfile.STATE_CONNECTED
|| bluetoothManager.getConnectionState(currentDevice, BluetoothProfile.GATT) == BluetoothProfile.STATE_CONNECTING
|| bluetoothManager.getConnectionState(currentDevice, BluetoothProfile.GATT) == BluetoothProfile.STATE_DISCONNECTING) {
Log.d("debug", "connectBLEDevice: connectBLEDevice ALREADY CONNECTED --> do nothing");
if(deviceConnectionRetryCount%30 != 0){
return;
}else { // RESET BT IF not communicating but BT claims to be connected for too long
Log.d("debug", "connectBLEDevice: STILL NOT COMMUNICATING for too long (2-3min) --> try to reconnect");
}
}
}
Log.e(TAG, "connectBLEDevice: Starting service discovery");
if (btGatt == null) {
// I was told there should be delay before connecting after disconnection (this could be accessed if user start and stop the service very fast)
new Handler(Looper.getMainLooper()).postDelayed(new Runnable() {
@Override
public void run() {
Log.d("debug", "connectBLEDevice: connectGatt in BLESERVICE");
btGatt = currentDevice.connectGatt(BleService.this, false, gattCb);
}
}, 500);
} else {
Log.d(TAG, "connectBLEDevice: btGatt != null --> Disconnect BLE");
btGatt.disconnect();
// I was told there should be delay before connecting after disconnection
new Handler(Looper.getMainLooper()).postDelayed(new Runnable() {
@Override
public void run() {
try {
boolean success = btGatt.connect();
if (!success || (deviceConnectionRetryCount > 0 && deviceConnectionRetryCount%10==0)) {
Log.d("debug", "connectBLEDevice: connect in BLESERVICE Failed OR retried 10 times (~ 1min) --> reset BT");
resetBluetooth();
}else{
Log.d("debug", "connectBLEDevice: connect in BLESERVICE Success");
}
}
catch (Exception e){
Log.e(TAG, "connectBLEDevice: Unable to connect BLE device (null pointer) --> reset BT", e);
resetBluetooth();
}
}
}, 500);
}
}
这是重置蓝牙的代码
private void resetBluetooth() {
Log.e(TAG, "*** Reseting Bluetooth! ***");
if (mGattManager != null) {
mGattManager.cancelCurrentOperationBundle();
disconnect(currentDevice);
mGattManager = null;
}
if (btGatt != null) {
btGatt.disconnect();
refreshDeviceCache(btGatt);
try {
btGatt.close();
}
catch (Exception e){
Log.e(TAG, "An exception occurred while closing btGatt");
}
}
initBluetooth();
btGatt = null;
}
