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Wokwi server

A CLI tool for launching a wokwi instance for your project.

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Installation

Download the prebuilt executables for you platform from the releases pages. Alternatively, if you have Rust installed you can install it via cargo.

cargo install wokwi-server --git https://github.com/MabezDev/wokwi-server --locked

Usage

Only two arguments are required, the target, specified with --chip and the path to your application elf file. Example running the esp-idf blink example on Wokwi:

idf.py build # build the application
wokwi-server --chip esp32 build/blink.elf # running example opened in the browser!

Simulating your binary on a custom Wokwi project

You can use the ID of a Wokwi project to simulate your resulting binary on it:

wokwi-server --chip <chip> --id <projectId> build/blink.elf

The ID of a Wokwi project can be found in the URL. E.g., the ID of ESP32 Rust Blinky is 345932416223806035.

As a cargo runner

Inside .cargo/config.toml, add a runner section to your target key (cargo reference). Example for the esp32:

runner = "wokwi-server --chip esp32"

Once configured, it's possible to launch and run your application in the Wokwi simulator by running cargo run.

GDB support

Wokwi exposes a GDB stub which this tool exposes via a TCP connection, see the following vscode configuration as a reference.

{
    "type": "gdb",
    "request": "attach",
    "name": "VsCode: Wokwi Debug",
    // change this!
    "executable": "${workspaceFolder}/target/xtensa-esp32-espidf/debug/esp-fs-tests",
    "target": "127.0.0.1:9333",
    "remote": true,
    // change this!
    "gdbpath": "xtensa-esp32-elf/bin/xtensa-esp32-elf-gdb",
    "cwd": "${workspaceRoot}",
    "stopAtConnect": true,
    "valuesFormatting": "parseText"
}

Troubleshooting

If Wokwi doesn't progress past "Connecting to ws://localhost:9012..." in the browser: