Custom GAP Service with User Descriptions (UUID 0x2901)

RE: Custom GAP Service with User Descriptions (UUID 0x2901)

Carles — Thu, 22 Jun 2017 13:22:29 GMT

It shocked you more than 3 years ago! I hope you managed to work around it :)

RE: Custom GAP Service with User Descriptions (UUID 0x2901)

Kyle Krueger — Thu, 22 Jun 2017 13:20:37 GMT

Your answer was quite shocking!

RE: Custom GAP Service with User Descriptions (UUID 0x2901)

Kyle — Thu, 30 Jan 2014 17:45:12 GMT

Thank you, Carles. I have opened a support ticket, and I am marking this issue resolved.

RE: Custom GAP Service with User Descriptions (UUID 0x2901)

Carles — Thu, 30 Jan 2014 15:04:28 GMT

Hi Kyle,

I can answer your questions:

1) Adding an additional user description descriptor after calling

This won't work because the GAP and GATT services are prepopulated by the stack when you initialize the SoftDevice, and therefore you won't be able to add any attributes to neither of them.

2) Creating the GAP service myself:

This won't work either because you are trying to use certain UUIDs that are considered reserved for the SoftDevice, among them the GAP and GATT UUIDs (since those services, as mentioned, are always by default present and populated and controlled by the stack).

Unfortunately there is no way in today's SD to achieve what you want. Unless you can modify the existing client, your best bet is to log an issue with support asking for this feature (ability to add optional descriptors in the GAP/GATT services).

Sorry about this.

Carles

RE: Custom GAP Service with User Descriptions (UUID 0x2901)

Mihail — Thu, 30 Jan 2014 10:19:09 GMT

BLE_UUID_BLE_ASSIGN(uuid, BLE_UUID_DESCRIPTOR_CHAR_USER_DESC); and BLE_UUID_BLE_ASSIGN(uuid, BLE_UUID_GAP);

Are the reason for your errors. In general you try to use reserved UUIDs.

you can find small explanation for user description descriptor here.