Illustrated Blog on Embedded Software Architecture
Introduction In our project one source supplies power to two different loads and we need to control how much power goes to which load. To achieve this, we use an STM32F100 processor to PWM high-power mosfets. These mosfet channels do or do not conduct green energy to the different loads which are a battery (bank) […]
A short definition Pulse-width modulation is commonly used in power-control or motor-control applications. Time is divided into periods. As always, the smaller the time periods, the higher the frequency. Within this time block a pulse signal is applied. The digital signal is logically active (“1”or ON) during a specified percentage of the time period, the […]
Introduction One of the goals of iteration 1 of the energy harvester project is to extend our software platform with drivers for measuring (gpio in, adc), controlling (gpio out, pwm) and debugging (uart). In this article our focus is set on the ADC driver (we already introduced the Analog-to-Digital-Converter here). It is hard (not to say […]
A button-driven handbrake Buttons (or switches, or keys) are quite common in the world of the embedded systems. In most cases buttons trigger a software action and – in our context – we will use buttons for configuring the settings of the charge controller. We can also use the buttons as a debugging utility. The […]
Introduction Probably one of the most fascinating things you had to do in your early embedded career was controlling some LEDs by means of GPIO (General Purpose I/O). This – of course – is so easy i.e. until your project manager passes by: “I want this LED to blink a little faster” “Why is the […]
Basic peripheral setup: pin configuration All MCUs have pins. They might come in different package types such as QFP (Quad Flat Package – Figure left) or BGA (Ball Grid Array – Figure right). But for us, embedded software engineers, pins or balls, we don’t really mind: MCUs have pins and we need to configure them. […]
What When prototyping, it is uncertain and sometimes even unlikely that the experimentation platform will be the basis of the final industrialized product. Therefor, it is good software developer workmanship to protect the logic development from change with regard to board, processor and real-time operating system, if and whenever possible. A platform abstraction – in […]
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Kris Bellemans is a software engineer employed at Sioux Embedded Systems, Belgium. He is passionate about low-level programming, embedded Linux and technology and science in general and has 4 years of experience in the field of software engineering. For more information, check his LinkedIn profile.
Patrice's professional tag cloud: anything mobile, software design, explorer, Enterprise Architecture, Agile Coach.
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Luc has more than twenty years of experience in embedded systems and real-time behavior. He is specialized in Operating Systems and interactions between hardware an software. Besides owning his company Luperco, he performs research on real-time scheduling at the Vrije Universiteit Brussel (VUB).
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