Bluetooth GATT (btgatt.h)
Functions and structures that provide Bluetooth Generic Attribute Profile (GATT) functions to communicate with a GATT server.
This file defines functions to work with Bluetooth capabilities on classic and low-energy devices. Before you use functions from this file, you must call the bt_gatt_init() function. You must call the bt_gatt_deinit() function when GATT functionality is no longer required in your application.