Update: Finally have Touch and TFT updates working. In video M4 is initialising and controlling the display and a simple UI is presented allowing toggling a green LED. Blog link if of interest and again this is custom code (FreeRTOS). Finally got this extremely cheap 2.0" Touch TFT display to output some data using the M4. As normal I'm not using the Arduino libraries but custom code (FreeRTOS). Next challenge is to see if touch can be made to work.