xseignard/thermalPrinter

var SerialPort = require('serialport'),
    serialPort = new SerialPort('/dev/ttyUSB0', {
        baudrate: 19200
    }),
    Printer = require('../src/printer');

serialPort.on('open',function() {
    var opts = {
        maxPrintingDots: 15,
        heatingTime: 150,
        heatingInterval: 4,
        commandDelay: 5
    };
    var printer = new Printer(serialPort, opts);
    printer.on('ready', function() {
        // will print a whole line and go to the next line on paper
        printer.printLine('first line');
        var letters = 'hello world'.split('');
        var invert = false;
        letters.forEach(function(letter) {
            invert = !invert;
            printer
                .printText(letter)
                .inverse(invert);
        });
        printer
            .lineFeed(3)
            .print(function() {
                console.log('done');
                process.exit();
            });
    });
});