Small update- Got a bit of work done on the code today, expanded the Radiation scan mode's functionality. Now it shows avg pulses/second, avg pulse strength (in uSv/h) along with the last pulse detected.
Part of this was making a timer based off of the RTC to count how long the scan mode has been on, this could be useful in other modes later on as well.
I also got a bit further on in building a framework to allow a more interactive UI. The ultimate goal is to have the ALT button switch the button pad's functionality to that of a D-PAD along with Confirm, Cancel and Back. This'll give me a lot more to work with, like highlighting scan elements or using a menu structure. A lot of work to do on this however...
The updated code has been attached to the project, v10.