With the availability of more capable microcontrollers, software development for these devices has become more complex over the years. The use of real-time operating systems is rapidly becoming an industry "best practice", and integration of commercial middleware as well as the reuse of custom libraries is gaining importance for cost-efficient software engineering. Successfully combining these building blocks of a modern embedded application often poses a problem for developers.
To resolve this, Arm developed the Common Microcontroller Software Interface Standard (CMSIS).
This tutorial shows how to read the contents of a text file from a USB memory stick attached to a development board. After pressing an update button on the touch screen, the content is shown on the LCD. It is based on application note 268 and was converted to work with CMSIS-Toolbox 2.0.0 in Keil Studio.
The application note explains the required steps to create the application on an STM32F429I-Discovery board. Still, it can be easily ported to other underlying hardware using MDK-Middleware, Keil RTX5 and CMSIS.
