function serial_connection(body, username) {

    require("./start_configuration/eltex_configuration_file")(body, username); // creating the configuration file

    var SerialPort = require('serialport');
    var port = new SerialPort('COM' + body.serial_port_number, {
        baudRate: 115200,
        flowControl: false,
        dataBits: 8
    });

    // Open errors will be emitted as an error event
    port.on('error', function (err) {
        console.log('Error: ', err.message);
    })

    // Switches the port into "flowing mode"
    port.on('data', function (data) {
        console.log('Data1:', data.toString('utf-8'));
    });

    /*
    // Дополнительный способ загрузки старотовых конфигураций в оборудование, набором команд
    var start_configuration =
        "exit\nexit\nexit\n" +
        "ip ssh server\n" +
        "interface vlan " + body.vlan_number + "\n" +
        "ip address " + body.ip_address + " " + body.net_mask + "\n" +
        "no ip address dhcp\n" +
        "exit\n" +
        "ip route 0.0.0.0 0.0.0.0 " + body.ip_default_gateway + "\n" +
        "exit\nexit\nexit\n";
    port.write(start_configuration, function (err) {
        if (err) {
            return console.log("Err: ", err.message);
        }
        else {
            port.close();
        }
    });
    */
    var ip_tftp_server = "172.16.0.215"; // address of tftp server
    // создание загрузка настроек
    port.write('exit\nen\ncopy tftp://' + ip_tftp_server + '/' + username + '/config' + ' running-config\n');
}

module.exports = serial_connection;