Not able to connect/pair using ble_hid_mouse on a nRF52 customized board

[alokmishra]

Hi,

I am using a custom board based on nRF52 (nRF52832-QFAB-R) and programing it with softdevice.hex and "ble_hid_mouse" example application in the nRF5 SDK v14.2.0. the device is getting listed in the other side scan list. But, I am not able to connect / pair using any mobile/laptop with an error on different devices as : "couldn't connect" / "couldn't connect because of an incorrect pin or passkey" / "failed to setup the connection" etc.

Just to mention that with the same ble_hid_mouse application and the softdevice.hex programmed on dev kit, I am able to connect / pair.

Can you please provide me any help on this ? Any possible cause? Way to debug? etc.

Thanks,
Alok

[Martin Lesund]

Hello Alok,

  Could you try to turn off Bluetooth on your phone, then make sure to erase the device (unpair/forget this device) in 'Bluetooth Settings' . Could you also try to reset the device while pressing Button 2(for DK) to erase bond info. Then power-cycle the board and turn on bluetooth, then try to connect with the device via nRF Connect.

Have you tried other examples on this custom board before? (with BLE features)

Does your custom board have a 32kHz crystal? 

Do you get any error codes in the nRF Connect app?

  A good way to debug it can be use a sniffer to track what is being sent over the air.

[alokmishra]

Hi Martin,

The board is not having any external 32kHz crystal. I have used the nRF5 SDK v14.2.0 ble hid_mouse and blinky app for the testing.

I am not getting any error code in the nRF Connect. With the nRF Connect, dev kit gets listed as "com3 xxxxx" but with custom board it is not getting listed.

Thanks.