Discovering Gatt Parameters is stalling/crashing system system

RE: Discovering Gatt Parameters is stalling/crashing system system

Hieu — Thu, 04 Jul 2024 06:51:09 GMT

Hi genmastermega,

I am glad you are able to get things working now. Thank you for sharing the solution with the community 🙂

RE: Discovering Gatt Parameters is stalling/crashing system system

genmastermega — Thu, 04 Jul 2024 05:03:54 GMT

Hello Hieu,

To be honest, I don't remember. I looked at many resources when compiling the code to make sure that I was getting the structure correct. The (main) error was that I was referencing memory of the discover_params that would de allocate as soon as the bt_gatt_discover function would run.

RE: Discovering Gatt Parameters is stalling/crashing system system

genmastermega — Thu, 04 Jul 2024 05:02:14 GMT

Hello All,

The main issue with the program was the memory scope of the bt_gatt_discover_params discover_params. Since I did not use the keyword static in front of the struct the struct would be forgotten by the system after the bt_gatt_discover function would run. This would mean that the discover callback would never be called or found thus casing the crashing and stalling behavior to occur.

The static keyword would define the struct in the scope of the file so the bt_gatt_discover function will always be able to reference the memory that holds the parameters.

Let me know if anyone else needs further help on this. I can try my best to update the post with relevant information.

RE: Discovering Gatt Parameters is stalling/crashing system system

Hieu — Mon, 01 Jul 2024 18:25:28 GMT

Hi genmastermega,

I will analyze this and come back to you in a couple of days.

From the function names, it seems like you based your application on one of the samples. Could you please let me know what sample that is?

Hieu