merephone news: I figured out (with @fast_code_r_us 's help) why wasn't getting my tweaked output onscreen: I was missing a method call!
Now I don't know why it wasn't working before... Oh well!
The theory is I was telling the screen's microcontroller to output what was in its framebuffer, but I wasn't transferring my microcontroller's framebuffer over to it.
I unplugged my screen to show my success to my dad as he was heading out. Its cool that I can do that!
1/2!
@alcinnz
Oooo, what is this device/project?
@fast_code_r_us