how to use standard and custom service uuids together?

RE: how to use standard and custom service uuids together?

Sigurd — Wed, 26 Jan 2022 14:13:07 GMT

[quote user="Hugo Habicht"]

well, 31 bytes is not a lot, really, particularly considering forced 16 bytes for a custom service uuid.

[/quote]

This is defined by Bluetooth spec. A scanner will typically send a scan response request, and can get more information from the scan response packet.

[quote user="Hugo Habicht"]

Isn't the purpose of the advertising packet to show all available services of the device?

[/quote]

No, it does not have to include all services. When the central connects it will do a service discovery.

RE: how to use standard and custom service uuids together?

Hugo Habicht — Wed, 26 Jan 2022 12:02:31 GMT

Hi,

well, 31 bytes is not a lot, really, particularly considering forced 16 bytes for a custom service uuid.

Isn't the purpose of the advertising packet to show all available services of the device?

Kind Regards,

RE: how to use standard and custom service uuids together?

Sigurd — Wed, 26 Jan 2022 11:56:41 GMT

Hi,

An advertising packet can consist of no more than 31 bytes. Try placing the BLE_UUID_CUSTOM_SERVICE in the scan response packet instead. Take a look at e.g. the ble_app_uart example to see how it's done there.