I found a great page here about how to write something in C that would be a great base point. If I run it in the background as a service or a daemon just like FBCP, then I think that will work fine. I'm also thinking about reading in a config file or something so that I can make the keyboard function different depending on the mode. I went ahead and set up SSH and got it to compile an example so that I can modify it from there.

I'm kind of getting anxious to put everything in the calculator case soon as I feel the hardware part of this project is coming to a finale and then it will just be software. Part of the reason is because I've already had a couple wires break on me from moving it around too much. I just reattached them, but I'd rather just have everything in the case. With the way I am going to set this up, unless I need to remove the SD card to burn a new image, there's no good reason to open up the case. I'm thinking I should be able to finish the base part of the project up by mid-August and then I can add emulators, expand the keypad driver, play with power options, and set up the environment to exactly how I want it.

I received one of the USB ports today and after playing around with some different possibilities, I think I will end up placing the HDMI port at the top and the USB port on the bottom. Once I get the new case, I will be removing less of the plastic innards, so that some of the plastic I shaved away will be able to support the ports better.

One other quick thing I came across and tested is that Pin 5 works as a wake button which is great news. There's nothing to add to that and I can make off behave by turning off the LCD and shutting down or perhaps I can make the LCD contrast off work so that if it's powered off in the menu.