Firmware

Writing device drivers you can actually test

Hardware bring-up is slow because drivers are tightly coupled to silicon. Here is an abstraction pattern that lets you write and run driver tests on your laptop.

Pogot Studio Engineering · 2025-09-22 · 8 min read

Writing device drivers you can actually test

Hardware bring-up is often delayed because firmware drivers are written directly against hardware registers.

Hardware Abstraction Layer (HAL) Patterns

By separating bus communication (I2C/SPI) behind function pointer interfaces, you can unit-test business logic and state transitions locally on Host x86 without target hardware attached.