BIOS vs. UEFI
Boot process, architecture, and key differences between legacy BIOS and modern UEFI.
Read article ↗ TECHNICAL NOTES · REAL EXPERIMENTS
Technical Notes on
Embedded Systems
Practical guides. Real experiments. Clear explanations.
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Read article ↗static int demo_probe(struct device *dev)
{
dev_info(dev, "device ready");
return 0;
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Follow device matching, resource setup, and the driver's probe callback.
Read article ↗ FROM THE WORKBENCH
Learn by tracing.
Build by testing.
Low-level concepts become clearer when you connect the theory to real hardware, logs, waveforms, and code. This is a growing collection of notes from that process.
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↓Drivers · BSP · Firmware
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ABOUT LOWLEVEL LABS
Curiosity below the abstraction.
LowLevel Labs is a technical knowledge space for embedded software, Linux internals, firmware, processor architecture, and hands-on debugging. The goal is simple: explain how systems work beneath the APIs—and share practical notes that help engineers reason from hardware to software.
UNDERSTAND · EXPERIMENT · DOCUMENT