Bluetooth Low Energy is a comparatively recent communication technology that is spreading wildly in our world. Due to low power consumption, it is easily implementable on cellular platforms, thus providing millions of users a fast and secure way to transfer their data from one device to another. In the previous chapters, we discussed the origin of Bluetooth Low Energy, its usage in the Internet of Things and some software/hardware development kits that can be used to implement your personal Bluetooth Low Energy device. From now on, we will start to put things in practice and implement things with the tools discussed in the last chapter. This chapter will define the very core of the Bluetooth Low Energy communication model by discussing:
- An overview of BLE Central/Peripheral architecture with the role of GATT Server/Client
- Android platform for Bluetooth Low Energy Communications
- Android services and characteristics using UUIDs
- Bluetooth pairing and bonding
- Android application to list Bluetooth devices in close proximity
- Heart rate monitor application on Android
- Over-the-air Device Firmware Update (DFU) on Android