title: How to use additional Pico i.MX7D pins on JP2 bus
body: <p>According to the pinlayout here:
  <a href="https://developer.android.com/things/hardware/imx7d-pico-io.html" rel="nofollow noreferrer">https://developer.android.com/things/hardware/imx7d-pico-io.html</a></p>
  
  <p>there are 3 additional set of pins besides the main raspberry pi like 40 pins. They are on buses J9, J2, J1.</p>
  
  <p>I am attempting to use GPIO2_IO01 on JP2, but after setting the pin high both in android things app and from command line tool, the pin never turns on. I can verify the 5v pin is working on the JP2 bus, but no other pins.</p>