Bluetooth Low Energy (BLE) radio chips are ubiquitous from Raspberry Pi to light bulbs. BLE is
an elaborate technology with a comprehensive specification but the basics are quite
accessible. A progressive and systematic approach will lead you far in mastering this wireless
communication technique which is essential for working in low power scenarios. In this book
you'll learn how to: Discover BLE devices in the neighborhood by listening to their
advertisements. Create your own BLE devices advertising data. Connect to BLE devices such as
heart rate monitors and proximity reporters. Create secure connections to BLE devices with
encryption and authentication. Understand BLE service and profile specifications and implement
them. Reverse engineer a BLE device with a proprietary implementation and control it with your
own software. Make your BLE devices use as little power as possible. This book shows you the
ropes of BLE programming with Python and the Bleak library on a Raspberry Pi or PC with C++
and NimBLE-Arduino on Espressif's ESP32 development boards and with C on one of the
development boards supported by the Zephyr real-time operating system such as Nordic
Semiconductor's nRF52 boards. Starting with a very little amount of theory you'll develop code
right from the beginning. After you've completed this book you'll know enough to create your
own BLE applications.
