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chipweinberger / flutter_blue_plus

Flutter plugin for connecting and communicationg with Bluetooth Low Energy devices, on Android, iOS, macOS
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[Help]: device is not disconnecting in iOS, disconnect method is not working. But in Android it is OK. #1020

Closed shimulxx closed 1 month ago

shimulxx commented 1 month ago

Requirements

Have you checked this problem on the example app?

Yes

FlutterBluePlus Version

1.33.4

Flutter Version

3.24.3

What OS?

iOS

OS Version

16.7

Bluetooth Module

Nano Pi, Neo Plus 2 Ubuntu

What is your problem?

in iOS, once connect it never disconnects. If i called disconnect it changes status to disconnect but actually it is connected.At this time the connected device couldn't be found by any device. Only way is to turn off bluetooth in iPhone manually to disconnect and the device is discoverable again. In Android all is ok, disconnects works.

Logs

Already described! Please solve the issue !!!! Thank you very much.....
chipweinberger commented 1 month ago

disconnect works fine for me on iOS

please give logs

shimulxx commented 1 month ago

Test with example app.

  1. After disconnect from iOS, try to connect with Android:

FAILED LOG:

I/ViewRootImpl( 7276): ViewRoot's Touch Event : ACTION_DOWN
I/ViewRootImpl( 7276): ViewRoot's Touch Event : ACTION_UP
I/flutter ( 7276): [FBP] <connect> args: {remote_id: E2:A1:97:24:0A:70, auto_connect: 0}
D/[FBP-Android]( 7276): [FBP] onMethodCall: connect
D/BluetoothGatt( 7276): connect() - device: E2:A1:97:24:0A:70, auto: false, eattSupport: false
D/BluetoothGatt( 7276): registerApp()
D/BluetoothGatt( 7276): registerApp() - UUID=e710a3e7-3fc4-4a62-ae5b-b3dfab3dce09
D/BluetoothGatt( 7276): onClientRegistered() - status=0 clientIf=7
I/flutter ( 7276): [FBP] <connect> result: true
I/ViewRootImpl( 7276): ViewRoot's Touch Event : ACTION_DOWN
I/ViewRootImpl( 7276): ViewRoot's Touch Event : ACTION_UP
D/BluetoothGatt( 7276): onClientConnectionState() - status=255 clientIf=7 device=E2:A1:97:24:0A:70
D/[FBP-Android]( 7276): [FBP] onConnectionStateChange:disconnected
D/[FBP-Android]( 7276): [FBP]   status: UNKNOWN_HCI_ERROR (255)
D/BluetoothGatt( 7276): close()
D/BluetoothGatt( 7276): unregisterApp() - mClientIf=7
I/flutter ( 7276): [FBP] [[ OnConnectionStateChanged ]] result: {disconnect_reason_code: 255, disconnect_reason_string: UNKNOWN_HCI_ERROR (255), remote_id: E2:A1:97:24:0A:70, connection_state: 0}
  1. After turn off iPhone Bluetooth of iOS then it connect successfully.

SUCCESS LOG:

I/ViewRootImpl( 7276): ViewRoot's Touch Event : ACTION_DOWN
I/ViewRootImpl( 7276): ViewRoot's Touch Event : ACTION_UP
I/flutter ( 7276): [FBP] <connect> args: {remote_id: E2:A1:97:24:0A:70, auto_connect: 0}
D/[FBP-Android]( 7276): [FBP] onMethodCall: connect
D/BluetoothGatt( 7276): connect() - device: E2:A1:97:24:0A:70, auto: false, eattSupport: false
D/BluetoothGatt( 7276): registerApp()
D/BluetoothGatt( 7276): registerApp() - UUID=c42497c8-3d03-4f03-b018-2b7fe4884898
I/flutter ( 7276): [FBP] <connect> result: true
D/BluetoothGatt( 7276): onClientRegistered() - status=0 clientIf=7
D/BluetoothGatt( 7276): onClientConnectionState() - status=0 clientIf=7 device=E2:A1:97:24:0A:70
D/[FBP-Android]( 7276): [FBP] onConnectionStateChange:connected
D/[FBP-Android]( 7276): [FBP]   status: SUCCESS
I/flutter ( 7276): [FBP] [[ OnConnectionStateChanged ]] result: {disconnect_reason_code: 0, disconnect_reason_string: SUCCESS, remote_id: E2:A1:97:24:0A:70, connection_state: 1}
I/flutter ( 7276): [FBP] <readRssi> args: E2:A1:97:24:0A:70
D/[FBP-Android]( 7276): [FBP] onMethodCall: readRssi
D/BluetoothGatt( 7276): readRssi() - device: E2:A1:97:24:0A:70
I/flutter ( 7276): [FBP] <readRssi> result: true
D/[FBP-Android]( 7276): [FBP] onReadRemoteRssi:
D/[FBP-Android]( 7276): [FBP]   rssi: -62
D/[FBP-Android]( 7276): [FBP]   status: GATT_SUCCESS (0)
I/flutter ( 7276): [FBP] [[ OnReadRssi ]] result: {error_string: GATT_SUCCESS, rssi: -62, success: 1, remote_id: E2:A1:97:24:0A:70, error_code: 0}
D/BluetoothGatt( 7276): onConnectionUpdated() - Device=E2:A1:97:24:0A:70 interval=36 latency=0 timeout=500 status=42
D/BluetoothGatt( 7276): onConnectionUpdated() - Device=E2:A1:97:24:0A:70 interval=36 latency=0 timeout=500 status=0

PLEASE HELP...

chipweinberger commented 1 month ago

UNKNOWN_HCI_ERROR (255)

There is no easy solution. This is Android reporting an unknown error. Not very helpful.

Try looking at your peripheral's firmware logs.

littleantfly commented 1 month ago

I also encountered the same problem. I was connected to a device via low-power Bluetooth. When I actively called disconnect(queue: false), the mobile phone system Bluetooth did not disconnect from the device, and the device could not receive the Bluetooth disconnect signal. flutter_blue_plus: ^1.33.4 IOS 18.0.1

shimulxx commented 1 month ago

chipweinberger this is the exact issue described by littleantfly. Can u solve this? This is not android problem. This problem belongs to iOS. Some BLE devices iOS disconnect works correctly but some device still connected after calling disconnect function. Can u solve it ?

chipweinberger commented 1 month ago

@shimulxx , please solve it and open a PR. thanks.