MicroPython.js

MicroPython transmuted into Javascript (WASM) by Emscripten.

Official Repo https://github.com/micropython/micropython/tree/master/ports/javascript

Running with Node.js

var mp_js = require('micropython');

mp_js.init(64 * 1024);
mp_js.do_str("print('hello world')\n");

Running with Webpack

Running MicroPython on Webpack is a little bit tricky. It expects the firmware.wasm file at /static/js/firmware.wasm. So a simple solution is to make static and js folder on webpack's public directory and put firmware.wasm on it. (PR is accepted for a better solution)

mkdir -p public/static/js
cp node_modules/micropython/lib/firmware.wasm public/static/js

And import it on your Javascript file

import mp_js from 'micropython';
mp_js.init(64 * 1024);
mp_js.do_str("print('hello world')\n");

API

The following functions have been exposed to javascript.

init(stack_size)

Initialize MicroPython with the given stack size in bytes. This must be called before attempting to interact with MicroPython.

do_str(code)

Execute the input code. code must be a string.

init_repl()

Initialize MicroPython repl. Must be called before entering characters into the repl.

process_char(char)

Input character into MicroPython repl. char must be of type number. This will execute MicroPython code when necessary.