usini / esprerial

A Javascript Library to easily communicate with microcontroler

Esprerial 🔌⚡

A Javascript Library to interact with a microcontroller using USB (WebSerial)
Check the example here : https://usini.github.io/esprerial

Add libraries

In your HTML file add the libraries (you can either download it here, or use JSDelivr CDN)

<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/usini/esprerial/dist/esprerial.min.js"></script>

Create Esprerial object

// Create Esprerial with baudrate 115200 / endline= "\r\n"
serial = new Esprerial();
// Custom baudrate / endline
serial = new Esprerial(baudrate=9600, endline="\n")

Add a connection button

<button onclick="serial.begin()">Connect</button>

Read a message (microcontroller --> web browser)

function serial_read(message){
  console.log(message);
}
serial.setRead(serial_read);

Write a message on serial (web browser --> microcontroller)

serial.write("Hello World");

Other callbacks

You can also set a callback when the connection is established or if an error occurred

serial.setStart(serial_start);
serial.setError(serial_error);