This repository contains a minimal implementation, based on Core Bluetooth, of the DE1PRO v1.1 Bluetooth Low Energy profile and of a controller for that profile sufficient to make coffee.
On a Mac with a recent version of Xcode, run
swift main.swift
Thank you to Lukas and to the entire DE1 community especially including John, Ray, and the whole team at Decent Espresso for your fine companionship (and products).