GUI Implementation of a Vegetable Dryer using a Cortex-M4 Processor

摘要

As semiconductor technology advances, mechanical control systems have been replaced with embedded systems to control machines easily. Most vegetable dryers are controlled by simple electronic circuits and mechanical switches, and their data are displayed very limited information of dryers such as temperature, operation time and etc. To extend functions of dryers, it is required to change user interfaces to input many data and to monitor operations of dryers. To improve these disadvantages, it is necessary to design a system using a graphical user interface and touch screen which monitor and control dryers and collect data and process them statistically. This paper describes a software design to control a dryer, which has IO interfaces, temperature setting, dry-time adjustment and humanity measurement by using a STM32F429 Cortex-M4 processor with limited embedded graphics.