The Singleton Design Pattern is a creational design pattern that ensures a class has only one instance and provides a global point of access to that instance. It is the most controversial Design Pattern because it is violating the “Single Responsibility Principle”. 🤔 Now you might be wondering: How does it violate the Single Responsibility […]
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In C++, virtual functions are a fundamental part of object-oriented programming that enable runtime polymorphism. This dynamic dispatch mechanism makes virtual functions essential for building flexible, extensible, and modular systems especially in large-scale or hardware-abstracted software architectures. In this article you will learn what is virtual function in C++ and when to use it. Â I
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In today’s fast-changing world of development, it is important to write code that is understable, maintainable, scalable, and stable. That means your code should be easy to understand, maintain, and grow over time. In C++, one useful feature that helps us achieve this is the pure virtual function. This feature allows us to create
What is Meant by Pure Virtual Function in C++? Read More »
I have designed a wide range of embedded systems devices, from precise energy meters to ultra-low-power IoT devices. One important lesson I have learned over the years is that code maintainability matters a lot. A maintainable code matters far more in the long run than clever performance tricks. In fact, clean, well-structured and maintainable code
Interface vs Abstract Class in C++: When and Why to Use Each Read More »
“Bad code is like a broken-down slum — hard to live in, harder to fix, and a nightmare to expand.” This is why SOLID design matters. Whether you’re adding a small feature or architecting an entire system, the SOLID principles help you write code that’s easier to maintain, scale, and test. Writing clean, reliable, and
SOLID Principles — explained with examples Read More »
When writing efficient and bug-free code in C++, especially in embedded or systems programming, understanding deep copy vs shallow copy is critical. Misunderstanding these concepts can lead to memory corruption, crashes, or data inconsistencies – issues no firmware engineer wants in a production device. This blog post will walk you through the fundamental difference between
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Now days, writing the clean code is just the starting point. What really matters is how your code is structured—it should be readable, maintainable, extensible, and scalable. That is where Object-Oriented Design (OOD) comes into play. Whether you are preparing for interviews, working in a product team, or building large systems, OOD is foundational. Every
Introduction to Object-Oriented Design (OOD): PART-1 Read More »
Object-Oriented Design (OOD) is more than a coding technique — it’s a mindset that mirrors the real-world using software. In our previous blog post, we explored what Object-Oriented Design (OOD) is and why it’s essential in building maintainable, scalable software systems. Now, let’s go deeper into the core concepts of Object-Oriented Programming (OOP) — the
Core Object-Oriented Concepts Every Developer Must Know- Part 2 Read More »
After working on embedded systems over many years from 8-bit microcontrollers to today’s high-performance STM32 MCUs—one lesson remains constant: A system is only as reliable as its fault recovery strategy. In critical or unattended systems, watchdog timers play a vital role. The STM32H5xx Window Watchdog (WWDG) helps monitor system health. It resets the system if
WWDG vs IWDG in STM32: Why WWDG Is the Better Watchdog for Many Projects Read More »
In real-time embedded systems—especially in safety-critical applications like automotive, industrial automation, medical devices, and smart metering—reliable fault detection and recovery mechanisms are critical to maintain system stability and safety. The Window Watchdog (WWDG), available in the STM32H5 series microcontrollers, plays a key role in this area. Unlike basic watchdog timers, the WWDG enforces precise timing
System window watchdog (WWDG) in STM32 Read More »