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Error 22 (0x16): GATT CONN TERMINATE LOCAL HOST

RO

Hello,

I'm running custom firmware on a nRF52840 based DK (Rigado BMD-340).

The log from the nRF Connect app is as follows: 

nRF Connect, 2019-09-12
BlueSkyEnergy (E1:83:A1:DF:B5:F0)
D 14:28:03.577 gatt.close()
D 14:28:03.591 wait(200)
V 14:28:03.797 Connecting to E1:83:A1:DF:B5:F0...
D 14:28:03.798 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE)
D 14:28:06.125 [Broadcast] Action received: android.bluetooth.device.action.BOND_STATE_CHANGED, bond state changed to: BOND_BONDING (11)
D 14:28:06.132 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2)
I 14:28:06.132 Connected to E1:83:A1:DF:B5:F0
D 14:28:06.155 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
D 14:28:06.172 [Broadcast] Action received: android.bluetooth.device.action.PAIRING_REQUEST, pairing variant: PAIRING_VARIANT_CONSENT (3)
D 14:28:36.096 [Broadcast] Action received: android.bluetooth.device.action.BOND_STATE_CHANGED, bond state changed to: BOND_NONE (10)
I 14:28:36.096 Bonding failed
V 14:28:36.118 Discovering services...
D 14:28:36.118 gatt.discoverServices()
D 14:28:36.147 [Callback] Services discovered with status: 0
I 14:28:36.147 Services discovered
V 14:28:36.172 Generic Access (0x1800)
- Device Name [R W] (0x2A00)
- Appearance [R] (0x2A01)
- Peripheral Preferred Connection Parameters [R] (0x2A04)
- Central Address Resolution [R] (0x2AA6)
Generic Attribute (0x1801)
- Service Changed [I] (0x2A05)
Client Characteristic Configuration (0x2902)
Unknown Service (d675132b-91ef-4cfe-a08d-f83006b38821)
- Unknown Characteristic [N R] (0000597c-0000-1000-8000-00805f9b34fb)
Client Characteristic Configuration (0x2902)
Characteristic User Description (0x2901)
- Unknown Characteristic [R WNR] (0000ef30-0000-1000-8000-00805f9b34fb)
Characteristic User Description (0x2901)
- Unknown Characteristic [R] (00007b2b-0000-1000-8000-00805f9b34fb)
Characteristic User Description (0x2901)
- Unknown Characteristic [R W] (00007237-0000-1000-8000-00805f9b34fb)
Characteristic User Description (0x2901)
- Unknown Characteristic [R] (0000d793-0000-1000-8000-00805f9b34fb)
Characteristic User Description (0x2901)
- Unknown Characteristic [N R] (00007092-0000-1000-8000-00805f9b34fb)
Client Characteristic Configuration (0x2902)
Characteristic User Description (0x2901)
- Unknown Characteristic [N R] (00007efb-0000-1000-8000-00805f9b34fb)
Client Characteristic Configuration (0x2902)
D 14:28:36.172 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)
D 14:28:36.175 gatt.setCharacteristicNotification(0000597c-0000-1000-8000-00805f9b34fb, true)
D 14:28:36.177 gatt.setCharacteristicNotification(00007092-0000-1000-8000-00805f9b34fb, true)
D 14:28:36.178 gatt.setCharacteristicNotification(00007efb-0000-1000-8000-00805f9b34fb, true)
D 14:28:39.133 [Callback] Connection state changed with status: 22 and new state: DISCONNECTED (0)
E 14:28:39.134 Error 22 (0x16): GATT CONN TERMINATE LOCAL HOST
I 14:28:39.134 Disconnected
D 14:28:39.221 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED

Could anyone help explain the error "Error 22 (0x16): GATT CONN TERMINATE LOCAL HOST"

What might be the cause and I need to proceed?

I have installed the app on Android 7.1.1 on a OnePlus 5 phone.

Thanks

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  • 0

    Hi,

    Since the log states that the local host terminated, it means that the phone terminated the connection for some reason. Apparently something upset the phone, but I cannot see what and why. Do you have a sniffer trace and log from the nRF side? Perhaps that can shed some light on things. You could also try different connection parameters and similar, as suggested in this thread.

Reply
  • 0

    Hi,

    Since the log states that the local host terminated, it means that the phone terminated the connection for some reason. Apparently something upset the phone, but I cannot see what and why. Do you have a sniffer trace and log from the nRF side? Perhaps that can shed some light on things. You could also try different connection parameters and similar, as suggested in this thread.

Children
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