Error Handling Patterns in C — With Practical Examples
Learn the 5 most common error handling patterns in C: return codes, output parameters, goto cleanup, error callbacks, and error structs. With practical examples.
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Embedded Systems
Comprehensive tutorials on embedded systems — from microcontroller basics and GPIO to RTOS, power management, and security. All examples use C code targeting real hardware.
Code Smells in C: Couplers — Feature Envy, Inappropriate Intimacy
Identify coupler code smells in C: Feature Envy, Inappropriate Intimacy, Middle Man, and Message Chains. With examples and fixes.
Understanding Technical Debt — With C Examples
Understand technical debt with C examples. Learn the types of debt, how to recognize it, and practical strategies for managing and paying it down.
Module Design in Embedded C — Structuring .h and .c Files
Learn how to design clean, maintainable modules in embedded C. Structure .h and .c files with proper encapsulation, static functions, and opaque pointers.
Testing Embedded C Code — Unit Tests, Mocks, and Frameworks
Learn how to test embedded C code with unit tests and mocks. Use Unity/CMock frameworks to test on your PC without hardware.
Firmware Architecture Patterns — Super-Loop, Event-Driven, and RTOS
Compare 4 firmware architecture patterns: super-loop, time-triggered, event-driven, and RTOS-based. Choose the right one for your embedded project.
Hardware Abstraction Layer (HAL) Design in C — With Examples
Learn how to design a Hardware Abstraction Layer (HAL) in C. Build portable, testable embedded code with clean hardware interfaces and mock implementations.
Building a Driver Interface in C — A Complete Example
Build a complete driver interface in C combining Strategy, Factory, and DIP patterns. One interface, multiple hardware implementations, fully testable.
Communication Interfaces: UART, SPI, and I2C Explained
Learn the three most common embedded communication interfaces: UART, SPI, and I2C. Understand how each works, their wiring, data formats, speeds, and when to use… Read More »Communication Interfaces: UART, SPI, and I2C Explained
Liskov Substitution Principle (LSP) in C
Learn the Liskov Substitution Principle with practical C examples. See how interchangeable modules (like storage drivers) should behave consistently through a common interface.