Central + peripheral in nrf52805 & Connection issue in BLE UART example

[sachin pawar]

Dear Nordic Team,

1. Is it possible to have dual role (one at a time) on nrf52805? Is any such stack available?
2. I am very new to BLE and i am facing a problem in BLE Uart example where TCU is not connecting if connection is not made within some period.i think within around 4 minutes if connection is not made then it does not connect. Or even if it was connected for some time and a connection drop happens or a manual disconnect happens then it do not connect again. what is the solution to it?

Regards,

Sachin

[Kenneth]

The nRF52805 is only qualified with the S112 and S113 softdevice stacks:
https://infocenter.nordicsemi.com/topic/comp_matrix_nrf52805/COMP/nrf52805/nrf52805_ble_qdid.html

Neither of these softdevice stacks support central mode:
https://infocenter.nordicsemi.com/topic/struct_nrf52/struct/s112.html
https://infocenter.nordicsemi.com/topic/struct_nrf52/struct/s113.html 

The softdevice will provide events to the application for instance on disconnect event and timeout:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s112.api.v7.3.0/group___b_l_e___g_a_p___a_d_v___m_s_c.html
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s112.api.v7.3.0/group___b_l_e___g_a_p___c_o_n_n___m_s_c.html 

How you handle these events are entirely up to you, but you can for instance use them to start advertisment again. Or start an app_timer that can start advertisment again in future.

Best regards,
Kenneth