webaudio-serial-tx

transmit serial data over webaudio in the browser

view a demo

example

var serial = require('webaudio-serial-tx');
var port = serial({ baud: 9600 });
 
port.write(new Buffer(5000).fill('wow'));
port.start();

api

var serial = require('webaudio-serial-tx');

var port = serial(opts)

Create a new writable stream port that will play UART framed serial data through the system speakers using webaudio.

• opts.context - the audio context to use
• opts.baud - the number of bits per second of framed data to transmit
• opts.autosuspend - automatically suspend the audio playback at the end of the data queue to save cpu and battery life. default: true
• opts.polarity - the polarity: 'ttl' (-1) or 'rs232' (+1).

For microcontroller serial ports and arduinos set opts.polarity to 'tty'.

For rs232 cables, set opts.polarity to 'rs232'.

You might need to flip the polarity if you have a custom circuit.

port.write(buf)

Pack buf and send over the wire.

port.start()

Start the audio playback.

port.stop()

Stop the audio playback.

port.flush()

Discard all previously written data.

install

With npm do:

npm install webaudio-serial-tx

license

MIT