Bit of a long gap between posts... Sorry!
Have done this though:
It is a brutalized Braids Oscillator from Oliver Gillet. Oliver has put all the documentation/source code on GitHub under a Creative-Commons license -- which is fantastic... I have pulled all the code into a Keil project and twekaed it a bit to use some uController libraries that I wrote a while ago that are manufacturer agnostic -- i will plan to make a brother that is Tiva based with a different display...