Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

RE: Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

Øyvind — Tue, 12 Nov 2019 12:29:46 GMT

Hi Erez,

Very glad to hear! Let me know if you meet any further issues 🙂

Kind regards,
Øyvind

RE: Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

eshaul — Tue, 12 Nov 2019 11:49:30 GMT

Hi Øyvin

As you nicely caught, I was missing a call in the sys_evt_dispatch to the fs_sys_event_handler

it seemed to be solved the issue.

I will run further tests to be sure.

Thank you very much Øyvin

Erez Shaul

RE: Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

Øyvind — Tue, 12 Nov 2019 09:30:31 GMT

The reset issue you are describing could indicate an issue with Fstorage. You will need to call:

// Forward Softdevice events to the fstorage module
fs_sys_event_handler(sys_evt);

Have a look at the ble_app_gls example and the following function:

void ble_advertising_on_sys_evt(uint32_t sys_evt)
{
    uint32_t err_code = NRF_SUCCESS;
    switch (sys_evt)
    {

        case NRF_EVT_FLASH_OPERATION_SUCCESS:
        // Fall through.

 

        //When a flash operation finishes, advertising no longer needs to be pending.
        case NRF_EVT_FLASH_OPERATION_ERROR:
            if (m_advertising_start_pending)
            {
                m_advertising_start_pending = false;
                err_code = ble_advertising_start(m_adv_mode_current);
                if ((err_code != NRF_SUCCESS) && (m_error_handler != NULL))
                {
                    m_error_handler(err_code);
                }
            }
            break;

 

        default:
            // No implementation needed.
            break;
    }
}

If you have this in your project, please check that the m_advertising_start_pending flag is cleared. This can be the cause of why your code is hanging in an advertisement.

My best advice is to upgrade your SDK, as v11.0 is very outdated.

Another thing to check, not related to your issue, since you have an old version is ERRATA 108.

RE: Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

eshaul — Tue, 12 Nov 2019 07:10:03 GMT

Hi Øyvin

AUGU_LOG_PRINTF_WRN is verified, and so as the other envelop functions.

Regarding the scenario, I will explain some more:

1. App+Softdevice is flashed to the board

2. The app starts to run, after a few seconds, it's time for the application to start advertising.

3. I call augu_ble_start_advertising to start the advertisement

4. Nothing happens (no advertising, no error and no adv. events)

5. I reset the board using nrfjprog --reset -f nrf52 and follow up again until advertising actually happens, this usually requires 2-4 resets cycles

6. From this point on, the board successfully advertise further on.

I have noticed another thread: link to the thread but there it happened because of the freertos.

Regarding the debugging, Yes I have tried to debug and follow up the code and i couldn't see any abnormal behavior, the application actually doesn't hang (it's just not performing the adv. request)

My feeling is that it's related to the PM & softdevice somehow.

I would like to continue and investigate to reach to a proper solution and I will be happy to share more explanation/code if that will be required.

Erez.

RE: Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

Øyvind — Mon, 11 Nov 2019 14:18:19 GMT

As these functions (e.g. AUGU_LOG_PRINTF_WRN) are not Nordic, have you verified that they work?

What do you mean with 2-4 resets? Do you mean manually pressing reset 2-4 times? What kind of board are you running?

Have you tried debugging your code using any type of IDE, i.e. step through code to see where it hangs? Try using break-points to see if it reaches correct functions.

Did you read this blog post on migration to peer manager?

RE: Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

eshaul — Mon, 11 Nov 2019 13:45:51 GMT

Hi Øyvin

As you can see at my augu_ble_start_advertising function,

I check for error codes and print them, this function also returns the err_code, that I check after the function returns.

There are no errors return in the cases were the adv. is not happening, the only indication I can see besides the actual lack of adv. is the lack of adv. events as I explained in my original message.

BR,

Erez

err_code = augu_ble_start_advertising();
APP_ERROR_CHECK(err_code);

RE: Softdevice is not advertising after switching from DM (device manager) to PM (peer manager)

Øyvind — Mon, 11 Nov 2019 13:36:00 GMT

Hello Erez,

Can you please provide more debugging information? Have a look at this introduction on error handling. Also, see the documentation on error module and debug logger.

Kind regards,
Øyvind