How to use Long Range on NRF52833 with SDK17 ?

RE: How to use Long Range on NRF52833 with SDK17 ?

Susheel Nuguru — Tue, 05 Apr 2022 07:44:00 GMT

Hi Nil,
This thread missed my attention queue, sorry for that and the delay caused by it.
I have overlooked at your code. The simple change you need is to configure advertising data and not the scan response data in the coded phy.

The change that you need to do is from

    init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    init.srdata.uuids_complete.p_uuids  = m_adv_uuids;

    init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
    init.advdata.uuids_complete.p_uuids  = m_adv_uuids;

RE: How to use Long Range on NRF52833 with SDK17 ?

Susheel Nuguru — Tue, 29 Mar 2022 13:14:04 GMT

Sorry for late response, yes that settings does not seem to work anymore and I do not know what has changed. I need to debug this example a bit to understand what is broken with CODED PHY. I need some time for that and will be back to you when i have some info.

RE: How to use Long Range on NRF52833 with SDK17 ?

Nil Orbach — Fri, 25 Mar 2022 17:14:17 GMT

Update : the only way I found to avoid this error is to add p_advertising->p_adv_data->adv_data.p_data = NULL; and p_advertising->p_adv_data->adv_data.len = 0; just before calling sd_ble_gap_adv_set_configure(&p_advertising->adv_handle, p_advertising->p_adv_data, &p_advertising->adv_params); (which is the function that raises the ERROR 7). But I guess this is not the proper way to do, and indeed my advertising still does not work...

By running the debugger on Keil, here is the adv_data structure before setting it to NULL:

RE: How to use Long Range on NRF52833 with SDK17 ?

Nil Orbach — Fri, 25 Mar 2022 14:04:20 GMT

Hi,

Thank you for your input. Actually, this is thanks to this example that I managed to modify my code to test CODED_PHY. But these modifications have led to the error I raised above...

Best regards,

Nil

RE: How to use Long Range on NRF52833 with SDK17 ?

Susheel Nuguru — Fri, 25 Mar 2022 13:56:39 GMT

There is an example on a bit older SDK to test advertising on CODED PHY for ble_app_uart. You can find the example uploaded here by Vidar. I do not think that there are that big functional changes to this API, so worth a try to test his project.