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ESP32 emulator runs firmware in the browser without physical hardware

github.com 3 min read Editor score 6/10

esp32sim is an open-source browser-based emulator intended to let developers experiment with and test ESP32 firmware without a device. It could be useful for embedded testing workflows, though the excerpt does not describe its supported hardware or accuracy.

What: esp32sim is a Rust emulator that runs real, unmodified ESP32 firmware on a computer or in a browser without physical hardware.
How: It boots the chip's mask ROM, second-stage bootloader and app, and models board peripherals; WiFi firmware can reach the real network.
Why it matters: Firmware teams can test across chip and board models without hardware, and compare emulation with real chips.

The emulator runs firmware through the ESP32 boot chain. Sketched from the article's own text.

Read on github.com → Hacker News · 42 comments

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