How to correctly enable/disable the Bluetooth radio on the nRF Distance Measurement with BLE Discovery?"

RE: How to correctly enable/disable the Bluetooth radio on the nRF Distance Measurement with BLE Discovery?"

J0sh1101 — Tue, 31 Oct 2023 10:46:42 GMT

Hello,

I'll check and then let you knowif this solved the issue.

Thanks

RE: How to correctly enable/disable the Bluetooth radio on the nRF Distance Measurement with BLE Discovery?"

Simonr — Wed, 11 Oct 2023 08:02:59 GMT

Sorry for the late reply, but we're falling behind with handling some cases, so I'm taking over this case now. As my colleague Einar explains in the link you shared on "disabling Bluetooth" he states that you should terminate active connections and stop scanning/advertising on both ends. From what I can see in your initial ticket, it only seems like you stop scanning/advertising, but don't terminate the connections. I haven't had time to look at your full project yet, but please make sure you terminate connections on both ends properly and disable scanning/advertising. Then I think you should reinit the Bluetooth stack to avoid any of the error messages you're seeing.

Best regards,

Simon

RE: How to correctly enable/disable the Bluetooth radio on the nRF Distance Measurement with BLE Discovery?"

J0sh1101 — Thu, 05 Oct 2023 14:27:46 GMT

Hi,

Thanks for coming back to me.

I am using the latest NCS, the SDK v2.4.2:

RE: How to correctly enable/disable the Bluetooth radio on the nRF Distance Measurement with BLE Discovery?"

JONATHAN LL — Thu, 05 Oct 2023 13:55:53 GMT

What NCS version are you using?

Regards,
Jonathan

RE: How to correctly enable/disable the Bluetooth radio on the nRF Distance Measurement with BLE Discovery?"

J0sh1101 — Tue, 26 Sep 2023 11:20:32 GMT

[quote userid="91187" url="~/f/nordic-q-a/104021/how-to-correctly-enable-disable-the-bluetooth-radio-on-the-nrf-distance-measurement-with-ble-discovery/447407"]Could you try to run in Debug mode and set some brake points, then go through the scenario where you think the device is crashing[/quote]

I tried it and no exception is thrown. When you call stop_ble_system() and start_ble_system(), you would think that the application is running normally. At second glance, you notice that LED4 is no longer blinking (The main is toggling the LED at 1Hz). Also the DM request and DM ranging pins (0.28, 0.29) do not toggle. When I press pause to see where the application is, I am usually in the scanning process:

When I try to continue to execute the program, the Error Fault Handler is called because the BLE constraints are violated.

[quote userid="91187" url="~/f/nordic-q-a/104021/how-to-correctly-enable-disable-the-bluetooth-radio-on-the-nrf-distance-measurement-with-ble-discovery/447407"]Does not seem like the output indicates a crash. Does the console output just stop ? [/quote]

Yes, my output freezes like that:

I have attached a project of my application. Maybe it will be faster this way. Below is the minimal version of the project:

devzone.nordicsemi.com/.../dm_5F00_minimal.zip

If you press key 1, the measurement will be stopped, and if you press key 2, the measurement will be started again.

I hope this helps a bit.

RE: How to correctly enable/disable the Bluetooth radio on the nRF Distance Measurement with BLE Discovery?"

JONATHAN LL — Mon, 25 Sep 2023 09:22:46 GMT

[quote user=""]However, the application crashes when I attempt to restart it. I noticed this because the LED is not blinking (I have set it to blink at 1 Hz). [/quote]

Could you try to run in Debug mode and set some brake points, then go through the scenario where you think the device is crashing.

[quote user=""]Here is the console output: [/quote]

Does not seem like the output indicates a crash. Does the console output just stop ?

Running in debug mode should give you some insight on what is happening and will show where in the application it gets stuck.

Regards,
Jonathan