Practice embedded interview questions. Write real C firmware in your browser, compile it for ARM Cortex-M4, and run it on a simulated STM32F4 with deterministic scoring.
Challenges span GPIO, UART, timers, SPI, I2C, DMA, watchdog, and RTOS. OhmWork focuses on diagnosis, state inspection, and hardware bring-up realism rather than algorithm puzzles. Study guides turn a job description and your experience into a targeted practice playlist.
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