Embedded Engineer
Last updated
Last updated
Assoc. Prof. Wiroon Sriborrirux, Founder of Advance Innovation Center (AIC) and Bangsaen Design House (BDH), Electrical Engineering Department, Faculty of Engineering, Burapha University
This roadmap is designed to help beginners aspiring to build a career as an Embedded Engineer/Developer, as well as assist current practitioners in expanding their skills.
Embedded engineering demands a solid understanding of hardware functionality as well as software development and programming skills. If you really want to pursue this career you must be highly motivated and passionate about it. As the well-known saying goes, "Hardware is hard!". But don't panic and be patient for the challenges you may encounter along this exciting journey. By dedicating enough time and effort practicing and doing projects you will soon find yourself as a real embedded engineer! 😀
▶️ ISO/IEC/IEEE 24765 Standard:
computer system that is part of a larger system and performs some of the requirements of that system. For example, a computer system used in an aircraft or rapid transit system.
The hardware and software of an embedded system are usually minimized and optimized for specific functions. The embedded system includes at least one microcontroller, microprocessor or digital signal processor. The embedded system designed to optimize reliability, cost, size and power saving for applications.
▶️ "Making Embedded Systems" Book:
An embedded system is a computerized system that is purpose built for its application.
▶️ "Computer Organization and Embedded Systems" Book:
A physical system that employs computer control for a specific purpose, rather than for general-purpose computation, is referred to as an embedded system.
An embedded system is a system in which the computer (generally a microcontroller or microprocessor) is included as an integral part of the system.
Often, the computer is relatively invisible to the user, without obvious applications, files, or operating systems. Examples of products with invisible embedded systems are the controller that runs a microwave oven or the engine control system of a modern automobile.
A combination of computer hardware and software, and perhaps additional mechanical or other parts, designed to perform a dedicated function.
In some cases, embedded systems are part of a larger system or product, as in the case of an antilock braking system in a car.
The embedded systems engineering roadmap is structured into three fundamental areas: SOFTWARE, HARDWARE, and SOFT SKILLS.
While the intersection of hardware and software is prevalent in embedded systems, specific job titles tend to emphasize one aspect over the other. For instance, roles like "Embedded Software Engineer/Developer," "Firmware Engineer/Developer," and "Embedded Linux Engineer/Developer" predominantly focus on software development. In contrast, positions such as "Embedded Hardware Engineer" and "Hardware Design Engineer" primarily deal with hardware design and electronics. Moreover, there are roles like "Embedded Systems Engineer" that necessitate a comprehensive understanding of both hardware and software.
It's crucial to note that each company in the embedded industry may have unique requirements for a given job title. Therefore, it's essential to tailor your focus based on your career aspirations. If you're seeking an embedded software position, prioritize the software-related skills outlined in the roadmap. Conversely, if you're interested in an embedded hardware job, concentrate on hardware skills and dedicate more time to learning electronics.
The roadmap provides a comprehensive guide to the essential topics for a typical "Embedded Systems Engineer" role. By delving into both software and hardware aspects, you can develop the necessary skills to thrive in this dynamic field. However, if you have a clear preference for software or hardware, you can tailor your learning path accordingly.
[!NOTE] Remember that the importance of individual software and hardware skills can differ depending on the specific requirements of the company and the job role.
[!TIP] To differentiate between the types of learning resources and the quality of their content, specific symbols are used before each item.
Resource types:
📘 : Books
🎞️ : Videos
📝 : Write-ups, articles, and blog posts
🔗 : Other links that do not fit into any of the above categories
Content quality symbols:
👶 : Easy-to-understand and beginner-friendly resources. Refer to them if you do not have prior knowledge in a topic.
💎 : Well-known references that have truly invaluable and comprehensive content. Refer to them if you want to deepen your understanding of a topic.
If you feel overwhelmed by the extensive list of topics in the roadmap, you're not alone. Before delving too deeply, let's ease into it with some simple starter projects. Learning embedded systems engineering takes time and effort. Don't get discouraged if you don't understand something right away. Keep practicing and you will eventually get there.
Engaging in hands-on projects is the most effective approach to learning. Rather than solely relying on theoretical knowledge from books or articles. Undertaking projects allows for practical learning experiences. Even a seemingly basic project has the potential to teach you more than hours of aimless reading. You can refer to books, articles, and courses when faced with difficulties in understanding the problems in real-world projects.
Don't try to build a complex project right away. Start with small, manageable projects to get your feet wet.
Use search engines to find the answers to your questions.
If you can't find what you're looking for using search engines, AI chatbots can also provide assistance. Keep in mind that AI may provide incorrect answers in some cases. It's best to confirm any answers with more reliable references.
If you have reservations about relying on AI advice alone, you can also ask your questions from real people:
You may have heard that YouTube is a university. And it's true - there is an extensive amount of invaluable free content on embedded systems available on YouTube. You'll also find some excellent free courses through Coursera and EdX. Additionally, Udemy offers some high-quality paid course options.
If you do not have any background in programming the embedded systems, Arduino boards and libraries are the best choice for you to start and learn the basics. Just keep in mind that most of the Arduino libraries are developed for learning purposes and are not optimized to be used in industry.
Additionally, the Arduino Core takes care of most of the low-level hardware-associated operations that you, as an embedded engineer, should be able to handle yourself or at least have a clear understanding of. If you want to become a professional embedded developer, you should be able to effectively use industry-standard APIs and SDKs provided and approved by microcontroller vendors, such as CMSIS for ARM Cortex-M microcontrollers, STM32Cube for STM32, ESP-IDF for Espressif microcontrollers, etc.
PlatformIO is a cross-platform, cross-architecture, multiple framework, professional tool for embedded systems engineers and for software developers who write applications for embedded products.
PlatformIO is not yet extensively adopted in industrial and large-scale projects, however, it is an excellent choice for individuals working on smaller projects. This is because it greatly reduces the need to install frameworks and setup build and debug tools, allowing you to concentrate on programming.
[!WARNING] It is not necessary to read all the books, articles, or watch all the videos you see here. If you try to do so, you will finally get tired and disappointed. You cannot study all the available content here in a reasonable time because it may take years. It is important to study enough to have at least a basic understanding of the required topics. Of course, the more time you dedicate to studying and doing projects, the more profound your knowledge and expertise will become.
Some of the resources mentioned here will just be used as references. Refer to them only when you need them.
Similar to other professions, embedded engineers require soft skills that can't be solely obtained from reading or watching videos. These skills are cultivated through interactions and tackling various work obstacles. Improving soft skills is not a one-size-fits-all approach. It will vary based on one's individual traits and requires self-awareness of your strengths and areas for growth. Enhancing these skills takes time and effort.
🔵 Basic Math & Calculus
🔵 Principles of Electric Circuits
🔵 Electronics Fundamentals
🔵 Digital Design
🔵 Computer Architecture
Computer architecture is the backbone of embedded systems, governing the hardware and software interactions. Embedded developers need a grasp of computer architecture to design, develop, and debug embedded software effectively. Expertise in ARM and RISC-V, two prevalent instruction set architectures (ISAs) in embedded systems, is paramount for embedded developers. ARM is the dominant ISA, while RISC-V's open-source nature and flexibility are gaining traction.
Embedded systems often require specialized test equipment to verify their functionality and performance. This equipment includes multimeters, oscilloscopes, logic analyzers, function generators, power supplies, and other tools that allow engineers to measure signals, inject stimuli, and monitor the behavior of embedded systems.
🔵 Multimeter
🔵 Logic / Protocol Analyzer
🔵 Oscilloscope
While hardware design and prototyping are primarily the responsibility of electronic hardware design engineers, embedded software engineers can benefit from a basic understanding of these concepts. This knowledge can be instrumental in identifying and resolving hardware-related issues during embedded system debugging. By having a grasp of hardware principles, embedded software engineers can effectively pinpoint the root causes of problems, leading to quicker and more efficient troubleshooting.
🔵 Breadboarding
Breadboarding is a hands-on approach to prototyping circuits, providing a versatile platform for experimentation and circuit design. Embedded systems often utilize breadboards for their ease of use, flexibility, and cost-effectiveness. By connecting components on a breadboard, embedded systems developers can quickly test and refine their designs without the need for permanent soldering. This allows for rapid iterations and efficient debugging, making breadboarding an invaluable tool for embedded system development.
🔵 Hardware Design Basics
🔵 PCB Design / EMC
🔵 Soldering / Rework
FPGAs (Field-Programmable Gate Arrays) are specialized integrated circuits that can be configured to perform various digital logic functions. They are widely used in embedded systems to achieve high performance, flexibility, and cost-effectiveness. FPGA designers use hardware description languages (HDLs) to create customized circuits that map directly to the FPGA architecture. Since FPGA engineering and verification differ significantly from embedded software development, it stands as a specialized domain within embedded systems.
Mastering programming fundamentals and software development principles is essential for a successful embedded design. Embedded systems demand efficient code, optimized data management, reusable design patterns, and effective memory management to function effectively in resource-constrained environments. Embedded developers must possess a strong foundation in these core concepts to create reliable and performant embedded systems.
🔵 Algorithms & Data Structures
🔵 Design Patterns
🔵 State Machines
🔵 Memory Management
Low-level languages like C and assembly provide direct hardware access, enabling efficient code optimization for resource-constrained embedded systems. System-level languages like C++ and Rust offer a higher level of abstraction for complex embedded applications, while Python is often employed for testing embedded systems due to its simplicity.
🔵 C
🔵 C++
🔵 Assembly
🔵 Python
🔶 Python for Microcontrollers
🔵 Rust
🔵 Zig
Microcontrollers are integrated circuits (ICs) that combine a microprocessor, memory, and input/output (I/O) peripherals on a single chip. They are designed for embedded applications, where they are used to control devices in a variety of industries, including automotive, industrial, consumer electronics, and healthcare.
Some popular microcontroller families include AVR, PIC, STM32, MSP430, nRF, and ESP32. Choosing the right microcontroller involves assessing application requirements, processing power, memory needs, and input/output capabilities. Consider ease of use, cost, reliability, availability, and future expansion.