52842 acting as peripheral, connected to another 52840 acting as central both very closed to each other, transferring data, is disconnecting occasionally. What can be the reason?

[Avi]

Disconnection of the peripheral  is done without enabling another connection, the only way is to reset the module.

It happens sometimes after 5 min up to 1-2 hours.

If there is an internal error due to data transfer, how can it recover without reset?

[Marjeris Romero]

Hi,

Could you print the disconnect reason?

In ble_evt_handler, you could do something like this:

        case BLE_GAP_EVT_DISCONNECTED:

       

            NRF_LOG_INFO("Disconnected reason: %d.",p_ble_evt->evt.gap_evt.params.disconnected.reason);

Also note that a reset indicates that you are running into the error handler, where the default behavior is to do a reset. You should then debug in order to find the reason for the reset. See this post about debugging: https://devzone.nordicsemi.com/f/nordic-q-a/10729/my-device-is-freezing-and-restarting

If you are using SES IDE, then make sure to use the Debug configuration and not the Release configuration.

Regards,

Marjeris