Bluetooth BLE default advertising UUID
When using code very similar to the example code (seen below), meaning not adding manufacturing data and service data.
The WiPy starts advertising and before I connect to it, this UUID appears, which does does not match anything I setup.
My question is how does this get generated? I also do not see the Espressif manufacturer ID, which I would of assumed would be in the default UUID.
741 0x02E5 Espressif Incorporated ( () )
I am still pretty new to Bluetooth so I might not know what I am talking about. Can somebody help clarify where this UUID comes from, and how necessary is it to fill in the manufacturers data and service data on the advertisement packet?
Also for extra reference as I try to piece this together here is what I am finding relevant code references.