Disconnection happened right after some seconds after connection with pairing?

[Jaehong Park]

I used my app based on the ble_peripheral_gls example in sdk 14.2.0.. and I applied static passkey, "000000" to our app.

When I tested my app with android phone runinng nRFconnect app, connection worked fine and then pairing procedure also was good and then disconnection automatically happened for some seconds.

the log on nRFconnect was attached as belows:

nRF Connect, 2019-05-02
APMATE-EE:8F:97:D3:94:2E (EE:8F:97:D3:94:2E)
V	08:14:22.794	Connecting to EE:8F:97:D3:94:2E...
D	08:14:22.794	gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D	08:14:23.418	[Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
D	08:14:23.427	[Callback] Connection state changed with status: 0 and new state: CONNECTED (2)
I	08:14:23.427	Connected to EE:8F:97:D3:94:2E
D	08:14:23.432	wait(1600ms)
V	08:14:25.032	Discovering services...
D	08:14:25.032	gatt.discoverServices()
I	08:14:25.122	Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms)
D	08:14:25.329	[Callback] Services discovered with status: 0
I	08:14:25.329	Services discovered
V	08:14:25.333	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)
Nordic UART Service (6e400001-b5a3-f393-e0a9-e50e24dcca9e)
- RX Characteristic [W WNR] (6e400002-b5a3-f393-e0a9-e50e24dcca9e)
- TX Characteristic [N] (6e400003-b5a3-f393-e0a9-e50e24dcca9e)
 Client Characteristic Configuration (0x2902)
D	08:14:25.334	gatt.setCharacteristicNotification(6e400003-b5a3-f393-e0a9-e50e24dcca9e, true)
I	08:14:25.398	Connection parameters updated (interval: 48.75ms, latency: 0, timeout: 5000ms)
I	08:14:28.729	Connection parameters updated (interval: 997.5ms, latency: 0, timeout: 4000ms)
D	08:14:50.424	[Callback] Connection state changed with status: 8 and new state: DISCONNECTED (0)
E	08:14:50.424	Error 8 (0x8): GATT CONN TIMEOUT
I	08:14:50.424	Disconnected
D	08:14:50.492	[Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED
D	08:15:16.091	gatt.close()
D	08:15:16.113	wait(200)

[run_ar]

Hi,

What is you Low frequency clock source and lf clock settings in sdk_config.h. Could you try using the 500ppm setting?

Can you also capture a sniffer trace of the on air traffic so I can see what is going on?

[Jaehong Park]

I use RC as lf clock setting and I already setted the 500ppm setting in sdk_config.h file. Then let me know what tool I should use for capturing a sniffer trace of the air traffic.

Thanks,

Jay Park

[Jaehong Park]

I'm testing with the example, ble_app_uart, then I'd like to apply static passkey to our app using ble_app_uart. please let us know how to apply the static passkey to our app. I would thank you when you let us know the sample codes.

Thanks,

Jay Park

[run_ar]

you can use: https://www.nordicsemi.com/Software-and-Tools/Development-Tools/nRF-Sniffer

[run_ar]

To add bonding capabilities you should look at one of our projects that already have this. e.g. nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral\ble_app_gls

Add the Peer Manager and make sure you handle the events described in the flow chart: Bonding: Passkey Entry with static passkey