How to display nodejs raw Buffer data as Hex string

Question

The following code uses SerialPort module to listen to data from a bluetooth connection.

I am expecting to see a stream of data in Hexadecimal format printed in console. But the console just shows some weird simbols. I want to know how can I decode and display the data in console.

var serialPort = new SerialPort("/dev/tty.EV3-SerialPort", {   parser: SP.parsers.raw }, false); // this is the openImmediately flag [default is true]  serialPort.open(function () {  console.log('open');  serialPort.on('data', function(data) {    var buff = new Buffer(data, 'utf8'); //no sure about this   console.log('data received: ' + buff.toString());  });   }); 

Answer 1

This code will show the data buffer as a hex string:

buff.toString('hex');