Min Pin requirment for 2.2" spi TFT LCD for photon for limit pin design?

[ScruffR]

I had an enhanced Tinker that successfully did even on the Core

Extended Android Spark Tinker App (RGB LED & RX/TX pins, configurable API server)

Thanks @zachary for open sourcing android-app. It was a good incentive and a precious entry point for me to get my local toolchain and an Android IDE (both with Eclipse) up and running on my tablet As a first output of this I’ve extended your Spark Tinker app and the Tinker FW a bit so that the Core’s RX/TX pins can be digitalRead/digitalWritten and also the RGB-LED got its dedicated controls [Particle ExtTinkerApp Demo] And this would be the required Tinker Firmwar…

It never made it into an official app, but it worked.