Hi Ken,
We also have made a website with hardware examples using noForth.
You can find it here:https://noforth.bitbucket.io/site/egel for launchpad.html
It contains chapters from "simple" I/O to small applications.
There is a section on timer interrupts, low power modes, SPI, I2C (with a solid working I2C-slave) and more.
In each chapter we mention the documents and page where the code is based on.
We give links to background information, components and ready to use modules.
We tried to make it easier to understand and adapt