SerialPort.writable
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The writable
read-only property of the SerialPort
interface returns a WritableStream
for sending data to the device connected to the port. Chunks written to this stream must be instances of BufferSource
(for example, an ArrayBuffer
or ArrayBufferView
such as Uint8Array
). This property is non-null as long as the port is open and has not encountered a fatal error.
Value
Examples
The following example shows how to write a string to a port. A TextEncoder
converts the string to a Uint8Array
before transmission.
const encoder = new TextEncoder();
const writer = port.writable.getWriter();
await writer.write(encoder.encode("PING"));
writer.releaseLock();
Specifications
Specification |
---|
Web Serial API # dom-serialport-writable |
Browser compatibility
BCD tables only load in the browser