I started working on the UI to display the results:
It is made using a GtkApplicationWindow containing a WebkitWebView, the content is made with HTML/CSS/JS with jquery and the chart is made using jqplot.
To make testing easier, I also added a dummy device that has random data, it can be enabled by setting OPENGLUCOSE_DUMMY_DEVICE=1 in your env.
A lot more work is needed, but that’s a start.