A20 SPI/I2C/Serial sensors

[gvi70000]

Hello,

Does anyone has some working examples of android apps for SPI or I2C or Serial sensors?
I want to create an app that can access through these protocols sensors attached to the A20 board.
See images in the link https://plus.google.com/app/basic/+IONGROZEA/posts?cbp=yipmismk9ywf&sview=25&cid=5&soc-app=115&soc-platform=1