Testing and CI

Developing and testing firmware before the boards exist: native_sim, ztest, emulated peripherals, Twister and CI.

Overview

The cheapest bug is the one found before a board exists. Zephyr makes that practical: the same application can be built for the host, run under a debugger and tested on every change, long before the first prototype is on the bench.

This path starts with native_sim, the piece that makes the rest possible, and builds up to tests that run on every commit.

Reading path

01 Developing firmware without hardware, with native_sim It compiles your code for the host, not the target. How native_sim works, what it emulates, and how GDB and AddressSanitizer find bugs before a board exists. 9 min

Every post here can also be read in Türkçe; each has a switch at the top.

Coming next

NextHardware-free CI for Zephyr: native_sim, ztest and Twister on GitHub Actions
NextTesting drivers without hardware: Zephyr emulators with ztest