RE: Attribute Caching

Tom Colburn — Wed, 05 Nov 2025 21:25:31 GMT

Excellent! Step 1 achieved. The key was the uuid itself - using BT_UUID_GATT_DB_HASH solved my immediate problem. I'll work with my FW expert on code cleanup - implementing your other suggestions - now that we've got read by uuid working. I'm sure we'll have more questions as we continue to implement Attribute caching.

Thanks for your prompt and accurate response!

Tom

RE: Attribute Caching

Susheel Nuguru — Wed, 05 Nov 2025 12:42:54 GMT

Hi,

Interesting.

First memset the read_prams_ptr before use as a good practice.

Are you sure that you are setting the uuid correct here?
(*read_params_ptr).by_uuid.uuid = BT_UUID_GATT_DB_HASH_VAL;

Shouldn't this be set to BT_UUID_GATT_DB_HASH?

Also guard your callback when data == NULL when you return BT_GATT_ITER_STOP else you keep on looping on the GATT iterations even though you see no data.