DSO Shell
https://gr33nonline.wordpress.com/2019/06/15/dso-150-hacks/
https://jyetech.com/forum/viewtopic.php?f=19&t=1206#p4057
https://github.com/michar71/Open-DSO-150
display problem: https://www.stm32duino.com/viewtopic.php?f=7&t=276&p=1794&hilit=dso138#p1794