Probably the most common use-case of BLE Central-Peripheral is the communication model between a smartphone and a smartwatch. Smartwatches are becoming very popular in our world.
Their primary purpose is to give controls over various apps (such as WhatsApp, Messenger, and Facebook etc.) without taking out the smartphone. In most cases, smartwatch comes as an accessory for a smartphone as it is dependent on the phone to receive and send data. Some manufacturers are making standalone smartwatches, which brings their own sensors (such as Wi-Fi and GPS etc.) to reduce the dependencies from the smartphone.
In order to understand the initial communication between a smartphone and a smartwatch, we will consider ...
