SwiftLinuxGATTServerExampleAdvanced

This is a simple example of how to create a Bluetooth 4.0 (BLE) peripheral (aka GATT server) on Linux (e.g. on a Raspberry Pi) using Swift and the SwiftLinuxBLE wrapper for the PureSwift BluetoothLinux library.

This example sets up a single BLE peripheral with a single service.

For a bare bones example without the SwiftLinuxBLE wrapper, take a look at SwiftLinuxGATTServerExample

Installation for Raspberry Pi

1. Install Raspbian or Ubuntu on Raspberry Pi
2. Install Swift 5 on Raspberry Pi using the prebuilt binary
3. Checkout the SwiftLinuxGATTServerExampleAdvanced project
4. Navigate to project directory and run: sudo /home/pi/usr/bin/swift run

Testing

• On mac: BlueSee BLE Debugger
• On iPhone: nRF Connect

The nRF Connect app is nice because you can subscribe to notifications

Dependencies

• PureSwift/BluetoothLinux - Pure Swift Linux Bluetooth Stack
• PureSwift/GATT - Bluetooth Generic Attribute Profile (GATT) for Swift
• SwiftLinuxBLE - Convenience wrapper for above

Helpful Links

BLE API Design

• GATT Profile Design

BLE Advertising

• Bluetooth advertising data basics
• PureSwift/GAPDataType
• PureSwift/GAPDataEncoder