When Connecting device using NRF52840 as Center, Always Disconnect Automatically after Discovery of Service

[freedow]

I am working on a project, using nrf52840 as a BLE Center to connect to BLE HID devices, but every time the connection is automatically disconnected when the service is discovered, this is the log,

<info> app: Found Device:0A:EC:FD:25:EE:B4

<info> app: pid=1

<info> app: Connection 0x0 established, starting DB discovery.

<info> app: assign

<debug> nrf_ble_gq: Purging request queue with id: 0

<debug> nrf_ble_gq: Registering connection handle: 0x0000

<debug> ble_db_disc: Starting discovery of service with UUID 0x1812 on connection handle 0x0.

<debug> nrf_ble_gq: Adding item to the request queue

<debug> nrf_ble_gq: GATTC Primary Services Discovery Request

<debug> nrf_ble_gq: SD GATT procedure (2) succeeded on connection handle: 0.

<debug> ble_scan: Scanning

<info> app: rescan

<debug> ble_scan: Scanning

does anyone know the reason?

[Edvin]

Hello,

I am not familiar with your application, but will it print anything when the device disconnects? And does it print something when the application starts up, so that you can see whether the device restarted or just disconnected?

Best regards,

Edvin