v148 · Devices · demo
Serial Terminal
Open a serial port, pick baud rate and data bits, then send and receive text. The same navigator.serial code runs on desktop Chrome and Android Chrome 148+.
no port
— Connect a serial device to begin —
TX>
Quick send:
const port = await navigator.serial.requestPort();
await port.open({ baudRate: 115200, dataBits: 8, stopBits: 1, parity: 'none' });
// Write
const writer = port.writable.getWriter();
await writer.write(new TextEncoder().encode('AT\r\n'));
writer.releaseLock();
// Read (stream)
const reader = port.readable.getReader();
while (true) {
const { value, done } = await reader.read();
if (done) break;
console.log(new TextDecoder().decode(value));
}
reader.releaseLock();
await port.close();see also
- Port Explorer — inspect port metadata without opening
- Back to feature index
- ChromeStatus entry
implementation reference
Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗