Lanes – Lightweight Async Web Framework for MicroPython

Lanes is a lightweight, asynchronous web framework for MicroPython, designed to run efficiently on resource-constrained devices like ESP32, ESP8266, and RP2040. It provides routing, middleware, blueprints, static file serving, cookie handling, and JSON support – all in a familiar Flask-like syntax.

Version: 1.0.0-pre
Status: Stable for development / Experimental on some boards

✨ Features

• 🌐 Async from the ground up – Built on asyncio for concurrent request handling.
• 🧩 Blueprint support – Modularise your application.
• ⚙️ Middleware support – Run code before each request.
• 🗂️ Static file serving – Serve CSS, JS, images, etc.
• 📍 Dynamic routing – Extract URL parameters (/user/:id).
• 🍪 Cookie handling – Set and read cookies easily.
• 📦 JSON auto‑serialisation – Return dict / list as JSON.
• 📝 Configurable logging – DEBUG, INFO, WARN, ERROR, FATAL.
• 🧪 Error handlers (soon to be fully functional).
• 🚀 Tiny memory footprint – Suitable for ESP32 with ~300KB free heap.

📦 Installation

1. Copy lanes.py to your MicroPython device (e.g., via ampy, mpremote, or WebREPL).
2. No additional dependencies – uses only built-in modules: asyncio, json, os, time.

```bash

Example using mpremote

mpremote cp lanes.py :/lib/lanes.py