WebREPL

WebREPL is a feature that allows users to interact with a MicroPython or CircuitPython microcontroller over a web browser. It provides a remote command-line interface, enabling users to execute Python code, inspect variables, and debug their programs directly from their computer without needing a physical serial connection.

To use WebREPL, the microcontroller must be running firmware that supports it and be connected to a network, typically via Wi-Fi. A small web server is hosted on the microcontroller, which serves a simple HTML page. This page includes a JavaScript-based terminal emulator that communicates with the MicroPython/CircuitPython REPL running on the device.

The connection is usually established by entering the microcontroller's IP address into a web browser. Once connected, users can type commands into the browser's terminal, and these commands are sent to the microcontroller for execution. The output from the microcontroller is then displayed back in the browser. This is particularly useful for development and debugging, especially in embedded systems where direct physical access might be inconvenient or impossible. WebREPL can also be used to upload and download files to and from the microcontroller's filesystem. Security is a consideration, and connections are often protected with a password.