Using the AM43 Custom Board, The Yocto 1.8 Fido, and following these instructions: http://variwiki.com/index.php?title=VAR-SOM-AM43_GPIO
I tried Header J20 Pin 2 (GPIO1_4) and it would not work. I was just trying to blink an LED like I can with the Beaglebone.
I also tried Header J19 Pin 2 (GPIO2_3) and it did not work. On boot up the LED came on but I could not control it.
I am booting off of an SD card.
Are these GPIOS really hooked up to use in the Yocto 1.8 Fido build? Or are they mapped some other way?