I have submitted an article based on the same VFO/TFT display to QST for publication...no word yet. It's actually an antenna analyzer, but the VFO and TFT work the same way. I'm also presenting a paper ("Giving Your QRP Rig a Face Lift.") at FDIM that adds the VFO/TFT display to the BITX40, so I need to wait to release that code.?
However, if your TFT display can use the mcufriend Arduino library, I'll write an interface demo program and post it so you can see how easy it is to do it.