We’re currently developing an application for the Ingenico iCT 220/250 Telium terminals. Nifty little devices, ARM9, Linux, GNU C with an Eclipse based development environment.
It’s pretty bare bones from a development perspective however, so the first thing we developed was a unit test framework (pretty hard to do TDD without one!). Here it is in action:

Ingenico iCT 220
Paul M. Watson says:
Not many people get printed paper test results!
July 16, 2010, 1:11 pm