Datasheet

Install and Try raspi-gpio
To help us debug/make sure we have the right device tree blob, we'll use a tool called raspi-gpio
Install it with
sudo apt-get install raspi-gpio
Then you can run it with
sudo raspi-gpio get
When you run it this time, you'll see the first 'bank' of GPIO pins set to, essentially
GPIO nn: level=1 fsel=0 alt= func=INPUT
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