https://www.waveshare.com/7.8inch-e-Paper-HAT.htm http://www.waveshare.com/wiki/7.8inch_e-Paper_HAT
https://archlinuxarm.org/platforms/armv6/raspberry-pi https://github.com/GregDMeyer/IT8951 https://github.com/Mari0nV/IT8951/commits/master async
