BLE#
BLE functions provide all the connectivity and protocol features of BLE:
GAP functions to implement the Generic Access Profile (GAP) protocol.
GATT functions to implement the Generic Attribute Profile (GATT) protocol.
Test Mode functions to access Bluetooth Low Energy (BLE) test mode features.
Register Callbacks section to refer to functions to register Bluetooth Low Energy (BLE) API callbacks.
Callbacks Declarations for handling Bluetooth Low Energy (BLE) API callbacks.
ATT_MAINTAIN_IN_HOST for handling services maintained in host.