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About this course
This course drills the C that runs with no operating system underneath it: pointers to memory-mapped registers, bit manipulation, volatile and const qualifiers, interrupt service routines, startup code and linker sections, and the peripheral basics of GPIO, timers, UART, SPI and I2C. Every item is a multiple-choice question with an explanation, so you find out immediately whether you understood the hardware or just the syntax. It's for embedded and firmware engineers, electronics students, and anyone preparing for an embedded systems interview.
Why practice embedded C
Bare-metal bugs are unforgiving — a missing volatile, a shared variable touched in an ISR, or a bit cleared with the wrong mask produces behaviour that looks random and costs days on a debugger. Answering questions on those exact patterns builds the suspicion you need, and the explanation names the mechanism instead of leaving you to guess.
How this course works
- Short MCQ sessions you can finish in a coffee break
- Every answer comes with an explanation of why it's right and why the alternatives fail
- Code-reading questions that hand you a snippet and ask what actually happens
- Difficulty ramps from pointer basics to concurrency and timing pitfalls
What you'll walk away with
Fluency with the bit-level idioms firmware is written in, a reliable instinct for what an ISR may and may not touch, and the vocabulary to answer embedded interview questions about volatile, memory maps and interrupt latency with confidence.