Sending messages to Tessel

README.md

This shows how to send messages to a connected Tessel over USB and how to log messages that the Tessel writes to console.log().

You'll need to do a tessel push tessel-code.js to push the script to the Tessel first as it seems you can only have one connection at a time (unless there's another way I'm not aware of).

Then run node host-code.js to send the message to Tessel. You should see Tessel log back the message it received.

host-code.js

var tessel =require('tessel');

tessel.listDevices(function(err,devices) {
	if(!devices || devices.length == 0) {
		console.error("Couldn't find any Tessels");
	} else {
		tessel.findTessel(
			{
				serial: devices[0].serial
			},
			function(err, client) {
				if(!err) {
          // client emits log messages when tessel does console.log
					client.on('log', function(level,msg) {
						console.log("Tessel:" + msg);
					});

					// send tessel a message - could be JSON as well I think
					client.send("Hello from Mac");
				} else {
					console.error("Could not find Tessel");
				}
			}
		);
	}
});

tessel-code.js

var tessel = require('tessel');

process.on('message', function(msg) { console.log("Got message: " + msg); });

// hacky timeout here to stop script exiting long enough to send the message
setTimeout(function() { console.log('done'); },30000);