New service UUID select

RE: New service UUID select

ibrahim123 — Thu, 23 Jul 2020 08:31:42 GMT

Thanks a lot

RE: New service UUID select

haakonsh — Thu, 23 Jul 2020 08:30:13 GMT

The type field must be BLE_UUID_TYPE_VENDOR_BEGIN, see Types of UUID.

The UUID field must be: 16-bit UUID value or octets 12-13 of 128-bit UUID.

Octet 12-13 is used as a shorthand to identify the Service, your characteristics UUID are usually based on the last 4 octets of the 128 bit UUID.

RE: New service UUID select

ibrahim123 — Wed, 22 Jul 2020 08:57:12 GMT

Hi
That what i did but the UUID field in the ble_uuid_t is a uint16 type
And its says in the link your provided

"16-bit UUID value or octets 12-13 of 128-bit UUID."

So in conclusion i must send a 0xXXXX only ?

Sorry i am just a little lost

I did create a ble_uuid_t bleuuid;

bleuuid.uuid = 0xAAAA;(for example)

Is that Ok or do i have to pay for this ?

RE: New service UUID select

haakonsh — Wed, 22 Jul 2020 08:39:49 GMT

see sd_ble_gatts_service_add and ble_uuid_t.

You need to create a ble_uuid_t and pass it to sd_ble_gatts_service_add.

RE: New service UUID select

ibrahim123 — Tue, 21 Jul 2020 17:27:37 GMT

Thanks for the answer
So if i use this function

sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &service_handle);

the ble_uuid.uuid must represet a 128bit uuid and not (for example (0xAAA0)) ?

RE: New service UUID select

haakonsh — Tue, 21 Jul 2020 16:21:13 GMT

You need a 128-bit UUID unless you pay BT SIG $$$ for a 16-bit one.