UUID System

UUIDs identifizieren Services, Characteristics und Descriptors.

16-bit vs 128-bit

16-bit (Bluetooth SIG reserviert):

0x1800 → Generic Access
0x180F → Battery Service

128-bit (Custom):

d44bc439-abfd-45a2-b575-925416129600

Base UUID: 00000000-0000-1000-8000-00805F9B34FB
16-bit:    0xABCD
128-bit:   0000ABCD-0000-1000-8000-00805F9B34FB