Create driver for BMA280

[proan]

http://www.bosch-sensortec.com/en/homepage/products_3/3_axis_sensors/acceleration_sensors/bma280/bma280

[Poofjunior]

I'm on it!

[proan]

Can we derive this from the BMA180 driver? If so, that would save significant effort.

[Poofjunior]

Aye, that's where I've started. Some registers are different, but the overall way to interact with the chip is really similar.

[highlunder]

I'm happy to see this initiative! Any progress?

[proan]

@highlunder, Progress is a little slow, as we've been distracted by some other robotics development at the moment. We'll see if we can't push what we have to a branch, if you'd like to help develop.

[highlunder]

That would be useful! No promises on how much I would be able to contribute back as my target platform is Contiki (https://github.com/contiki-os/contiki/), but I'd hope there would be some generic/reusable code.