How to calibrate the touchscreen using the A20 official images
The purpose of this article is to give a brief explanation on how to calibrate the touchscreen component while using an A20 board and official Debian image.
The article assumes that the customer is using a hardware setup consisting of products manufactured by Olimex LTD - e.g. display, touchscreen component, A20 board all made by Olimex. The article also assumes that the customer is using the latest official Debian image.