myconode · September 16, 2015 03:20
diff --git a/tessel-wifi-network-test.js b/tessel-wifi-network-test.js
 // Tessel Wifi & Network Test
 // Author: Daniel Christopher <thelostspore@gmail.com>
 // Public Domain
 //
 // 1- Attempt to connect to Internet, retry as necessary
 // 2- Make an HTTP GET
 //
 // Combines Tessel [wifi examples](http://start.tessel.io/wifi)


 // Wifi Access
 var network  = '#####'; // put in your network name here
 var netpass  = '#####'; // put in your password here, or leave blank ('') for unsecured
 var security = 'wpa2';  // other options are 'wep', 'wpa', or 'unsecured'


 // Tessel Firmware
 var wifi   = require('wifi-cc3000');

 // Node built-in
 var http = require('http');

 // References
 var timeouts = 0;
 var power_cycles = 0;
 var connection_attempts = 0;


 function connect(){
  // Only make connection attempt when necessary
  if (!wifi.isConnected()){
    console.log("\nAttempt to Connect, #" + (++connection_attempts));

    wifi.connect({
      security : security,
      ssid     : network,
      password : netpass,
      timeout  : 24 // seconds
    });

    // wait an additional few seconds because the wifi chip does not appear to
    // to be abiding by the timeout set in the wifi object
    delay(10000);
  }else{
    console.log("\nAlready Connected!\n");
  }
 }


 // Initial attempt
 connect();


 // wifi event-handler registration
 wifi.on('connect', function(data){
  console.log("Wifi connected", data);

  // reset on success
  connection_attempts = 0;

  // http://httpstat.us/ is a service for generating HTTP codes
  // Here, make request to see if Tessel is online
  var statusCode = 200;

  http.get("http://httpstat.us/" + statusCode, function (res) {
    var buffer = [];

    // response callback
    res.on('data', function (data) {
      // success
      buffer.push(new Buffer(data));
      console.log('Received: ', new Buffer(data).toString());
      return;
    });

  }).on('error', function (e) {
    console.log("HTTP Error: ");
    console.log(e.message);
    return;
  });

  // Terminate
  return;
 });

 wifi.on('disconnect', function(data){
  console.log("Wifi disconnected", data);

  // reset and reconnect
  powerCycle();
 })


 wifi.on('timeout', function(err){
  // tried to connect but couldn't, retry
  console.log("Wifi time out, #" + (++timeouts));

  if (timeouts > 2) {
    // reset the wifi chip
    powerCycle();
  } else {
    // try to reconnect
    connect();
  }
 });


 wifi.on('error', function(err){
  // one of the following happened
  // 1. tried to disconnect while not connected
  // 2. tried to disconnect while in the middle of trying to connect
  // 3. tried to initialize a connection without first waiting for a timeout or a disconnect
  console.log("error emitted", err);

  // do not give up
  powerCycle();
  
  // ...unless we've tried 10+ times
  // See Troubleshooting section
  if(power_cycles > 10){
    console.log(err);
    console.log("\n More than 10 failed attempts.");
    console.log("See Troubleshooting section.");
    return;
  }
 });

 // reset the wifi chip progammatically
 function powerCycle(){
  // when wifi chip resets, it tries to reconnect to the last saved network
  console.log("\nPower cycling, #" + (++power_cycles));

  wifi.reset(function(){
    console.log("Power cycling complete\n");
    timeouts = 0; // reset timeouts

    // wait for a bit
    delay(10000);

    // attempt to connect if necessary
    if (!wifi.isConnected()){ connect(); }
  });
 }


 // - lite version of [ErikDubbelboer's sleep](github.com/ErikDubbelboer/node-sleep)
 function delay(ms) { var e = new Date().getTime() + (ms); while (new Date().getTime() <= e) {; }; }




 // Troubleshooting Wifi
 // --------------------
 //
 // Check to see if Tessel is connected to wifi using Tessel CLI, `tessel wifi -l`.
 // If there is no IP address, the Tessel is not connected to Wifi.
 //
 // Try power cycling your Tessel and then run the tessel wifi connection command again.
 //
 // Remove saved wifi profiles => `tessel stop; tessel wifi -d`
 //
 // Move closer to the router.
 //
 // Reset the router.
 //
 // Make sure the router has b/g mode enabled and isn't using channels 12, 13, or 14.
 //
 // https://github.com/tessel/t1-docs/blob/master/wifi.md#connecting-to-wifi-from-js
	// Tessel Wifi & Network Test
	// Author: Daniel Christopher <thelostspore@gmail.com>
	// Public Domain
	//
	// 1- Attempt to connect to Internet, retry as necessary
	// 2- Make an HTTP GET
	//
	// Combines Tessel [wifi examples](http://start.tessel.io/wifi)


	// Wifi Access
	var network = '#####'; // put in your network name here
	var netpass = '#####'; // put in your password here, or leave blank ('') for unsecured
	var security = 'wpa2'; // other options are 'wep', 'wpa', or 'unsecured'


	// Tessel Firmware
	var wifi = require('wifi-cc3000');

	// Node built-in
	var http = require('http');

	// References
	var timeouts = 0;
	var power_cycles = 0;
	var connection_attempts = 0;


	function connect(){
	// Only make connection attempt when necessary
	if (!wifi.isConnected()){
	console.log("\nAttempt to Connect, #" + (++connection_attempts));

	wifi.connect({
	security : security,
	ssid : network,
	password : netpass,
	timeout : 24 // seconds
	});

	// wait an additional few seconds because the wifi chip does not appear to
	// to be abiding by the timeout set in the wifi object
	delay(10000);
	}else{
	console.log("\nAlready Connected!\n");
	}
	}


	// Initial attempt
	connect();


	// wifi event-handler registration
	wifi.on('connect', function(data){
	console.log("Wifi connected", data);

	// reset on success
	connection_attempts = 0;

	// http://httpstat.us/ is a service for generating HTTP codes
	// Here, make request to see if Tessel is online
	var statusCode = 200;

	http.get("http://httpstat.us/" + statusCode, function (res) {
	var buffer = [];

	// response callback
	res.on('data', function (data) {
	// success
	buffer.push(new Buffer(data));
	console.log('Received: ', new Buffer(data).toString());
	return;
	});

	}).on('error', function (e) {
	console.log("HTTP Error: ");
	console.log(e.message);
	return;
	});

	// Terminate
	return;
	});

	wifi.on('disconnect', function(data){
	console.log("Wifi disconnected", data);

	// reset and reconnect
	powerCycle();
	})


	wifi.on('timeout', function(err){
	// tried to connect but couldn't, retry
	console.log("Wifi time out, #" + (++timeouts));

	if (timeouts > 2) {
	// reset the wifi chip
	powerCycle();
	} else {
	// try to reconnect
	connect();
	}
	});


	wifi.on('error', function(err){
	// one of the following happened
	// 1. tried to disconnect while not connected
	// 2. tried to disconnect while in the middle of trying to connect
	// 3. tried to initialize a connection without first waiting for a timeout or a disconnect
	console.log("error emitted", err);

	// do not give up
	powerCycle();

	// ...unless we've tried 10+ times
	// See Troubleshooting section
	if(power_cycles > 10){
	console.log(err);
	console.log("\n More than 10 failed attempts.");
	console.log("See Troubleshooting section.");
	return;
	}
	});

	// reset the wifi chip progammatically
	function powerCycle(){
	// when wifi chip resets, it tries to reconnect to the last saved network
	console.log("\nPower cycling, #" + (++power_cycles));

	wifi.reset(function(){
	console.log("Power cycling complete\n");
	timeouts = 0; // reset timeouts

	// wait for a bit
	delay(10000);

	// attempt to connect if necessary
	if (!wifi.isConnected()){ connect(); }
	});
	}


	// - lite version of [ErikDubbelboer's sleep](github.com/ErikDubbelboer/node-sleep)
	function delay(ms) { var e = new Date().getTime() + (ms); while (new Date().getTime() <= e) {; }; }




	// Troubleshooting Wifi
	// --------------------
	//
	// Check to see if Tessel is connected to wifi using Tessel CLI, `tessel wifi -l`.
	// If there is no IP address, the Tessel is not connected to Wifi.
	//
	// Try power cycling your Tessel and then run the tessel wifi connection command again.
	//
	// Remove saved wifi profiles => `tessel stop; tessel wifi -d`
	//
	// Move closer to the router.
	//
	// Reset the router.
	//
	// Make sure the router has b/g mode enabled and isn't using channels 12, 13, or 14.
	//
	// https://github.com/tessel/t1-docs/blob/master/wifi.md#connecting-to-wifi-from-js