UUID System
UUIDs identify services, characteristics, and descriptors.
16-bit vs 128-bit
16-bit (Bluetooth SIG reserved):
0x1800 → Generic Access
0x180F → Battery Service
128-bit (Custom):
d44bc439-abfd-45a2-b575-925416129600
UUIDs identify services, characteristics, and descriptors.
16-bit (Bluetooth SIG reserved):
0x1800 → Generic Access
0x180F → Battery Service
128-bit (Custom):
d44bc439-abfd-45a2-b575-925416129600