NRF52832 BLE scan causes program crash

RE: NRF52832 BLE scan causes program crash

Hung Bui — Tue, 27 Feb 2024 08:18:06 GMT

Hi Jacky,
Please show how you do the flash writing.
Have you tried to read the flash content ?

RE: NRF52832 BLE scan causes program crash

Jacky Li — Tue, 27 Feb 2024 01:05:15 GMT

Hi Hung,

I use fds do flash writing.Occasionally write a few bytes of data.

RE: NRF52832 BLE scan causes program crash

Hung Bui — Mon, 26 Feb 2024 08:48:35 GMT

Hi Jacky,
Do you do any flash writing in your application ?

I would suggest to read the flash (or use nrfjprog.exe --readcode) to read the whole flash and then try to compare it with the one that works correctly. You can use any hex compare tool to do that, I use Notepad++ Hex comparator.

RE: NRF52832 BLE scan causes program crash

Jacky Li — Sat, 24 Feb 2024 03:45:46 GMT

Hi Hung,

Thank you for your reply.

The SDK I am using is 17.0.1

This phenomenon sometimes takes a lot of time to occur, or it may not be caused by this reason.

After the crash, I checked the memory allocation of the program and found that some devices had their protocol stack partially turned black, while some devices had their protocol stack partially missing. What is the situation like this?

RE: NRF52832 BLE scan causes program crash

Hung Bui — Tue, 20 Feb 2024 14:18:20 GMT

Hi Jacky,

I'm not aware of such an issue.

Do you do anything else beside scanning ?
What's the symptom when the device stopped working ?

[quote user=""] it can be seen that when scanphys=BLE_GAP_PHY_1MBPS, the interval must be greater than twice the window, otherwise it will be prone to crashes. [/quote]

Could you let me know where you find such information ?

As far as I know there shouldn't be a problem doing scan window = scan interval.

Can you reproduce the issue with one of our example ?
Which SDK you are using ?