UUID change on the fly

RE: UUID change on the fly

iQd — Wed, 26 Dec 2018 17:55:21 GMT

I solved the problem by making the following:

1. Have multiple UUIDs in their own arrays.

2. In advertising_init, I have an IF conditional for choosing the UUID I want to use in different situations.

3. When I need to change the UUID, I set a variable which controls the UUID selection in advertising_init.

4. Then I check if a connection is active.
If so, end the connection and wait for the event telling this has happened.
In this event code I trigger a flag variable which makes the next step.
If no connection is active, I do the next step directly.

5. Stop advertising, run advertising_init again, new UUID is selected, start advertising.

This way the new UUID comes active almost instantly and I achieve what I was looking for.

RE: UUID change on the fly

iQd — Tue, 25 Dec 2018 09:11:50 GMT

Hi,

Thank you for the info.

I checked through the whole project, however I do not see there any method for changing which 128bit UUID is being advertised at a time.

The project has different services which have different UUIDs.

I have different UUIDs too, of which only one at a time I need to advertise, and depending on state, I have to change the UUID and then advertise a different UUID.

How to do this without resetting the device, is what I am looking for.

Thanks!

RE: UUID change on the fly

rraa — Tue, 25 Dec 2018 05:04:27 GMT

you should check ble_lbs.h

#define LBS_UUID_SERVICE 0x1523
#define LBS_UUID_BUTTON_CHAR 0x1524
#define LBS_UUID_LED_CHAR 0x1525