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Posts Tagged ‘Custom’

Bluetooth GATT: How to Design Custom Services & Characteristics [MIDI device use case]

By Mohammad Afaneh | June 27, 2017 | 2
BLE MIDI Device - GATT Example

You’re probably aware that adding Bluetooth Low Energy (BLE) to your device is one of the best ways to achieve a great user experience for your IoT device. Why is that, you may ask? Well, adding BLE allows your device to be connectable from a smartphone app. And we can all agree that smartphone apps…

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How do I choose a UUID for my custom services and characteristics?

By Mohammad Afaneh | October 19, 2016 | 2
Custom UUIDs for custom GATT Services and Characteristics

First, a few things to know: “A UUID is a universally unique identifier that is guaranteed to be unique across all space and all time” (Bluetooth 4.2 spec, Vol 3, Part B, section 2.5.1 UUID) A UUID is a 128-bit value. There are reserved UUIDs by the Bluetooth SIG that are generally represented by their 16-bit…

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