NRF_BUSY ERROR in Multilink Uart

[OpenCircuit]

Hi,

https://github.com/NordicPlayground/nrf52-ble-app-uart-c-multilink

I have tried the example you modified. It works fine. However, I get ERROR 17 NRF_BUSY when 2-3 peripherals connect to central device at the same time. I used ble_app_uart as peripheral.

These are from debugging:



This is from RTT viewer :

00> <info> app_timer: RTC: initialized.
00> <info> app: BLE UART central example started.
00> <info> app: Connecting to target 893473D394EE
00> <info> app: Connecting to target 5E7D5EC6C9DB
00> <error> app: ERROR 17 [NRF_ERROR_BUSY] at C:\Users\Desktop\SDK\examples\ble_central\multilink-master-uart-c\main.c:408
00> PC at: 0x00030815
00> <error> app: End of error report

Could you please help me about it ?

Thank you in advance,

Best Regards

[OpenCircuit]

Hi Hung,

I know how to use app_timer. I just wanted to learn how to integrate BLE_DB_DISCOVERY_COMPLETE event to main.c and how to use p_db_discovery below in ble_db_discovery.c to avoid assertion:

if (p_db_discovery->discovery_in_progress)
    {
        return NRF_ERROR_BUSY;
    }

    return discovery_start(p_db_discovery, conn_handle);

I really tried to integrate them to main.c . Anyways, I solved the problem.

I changed 

ble_db_discovery_start(&m_db_disc, p_ble_evt->evt.gap_evt.conn_handle);

 to 

ble_db_discovery_start(&m_db_disc[p_ble_evt->evt.gap_evt.conn_handle], p_ble_evt->evt.gap_evt.conn_handle);

And database discovery module instance needs to be changed to from BLE_DB_DISCOVERY_DEF(m_db_disc)  to BLE_DB_DISCOVERY_ARRAY_DEF(m_db_disc, NRF_SDH_BLE_CENTRAL_LINK_COUNT) since it is an array.

[SteinarK]

I had the exact same problem, and your elegant solution worked for me as well. 

Thank you.

[OpenCircuit]

I am happy to help :) Good luck with your project.

[Avi]

Would you please share your modified code that solved the problem?

[OpenCircuit]

There are no changes except what I did above. The rest is same.