"var Clock ..." prevents code execution (?)

[espruino-discuss]

Posted at 2015-01-07 by stozk

Hi everyone

I have used this code to retrieve sensor data:

var foo = require("ADXL335").connect(C3,A0,A1);
var wlan = require("CC3000").connect();

wlan.connect( "xx", "xxx", function (s) { 
  if (s=="dhcp") {
    console.log("My IP is "+wlan.getIP().ip);
    require("http").createServer(function (req, res) {
      var d= foo.readG();
      var data=  {"x":d[0], "y":d[1], "z":d[2]};
      res.writeHead(200, {'Content-Type': 'text/plain'});
       res.write(JSON.stringify(data));
       console.log("x " + d[0] + " y " + d[1] + " z " + d[2]);
     // res.write("x " + d[0] + " y " + d[1] + " z " + d[2]);
      res.end();
    }).listen(80);
  }
});

This works just fine. Since I also want to have current timestamps for the sensordata logging, I tried to set the clock as described in the reference, which results in this:

var foo = require("ADXL335").connect(C3,A0,A1);
var wlan = require("CC3000").connect();
var Clock = require("clock").Clock;

wlan.connect( "xx", "xxx", function (s) { 
  if (s=="dhcp") {
    console.log("My IP is "+wlan.getIP().ip);
    var clk=new Clock("Jan 07, 2015 12:38:00");    
    console.log(clk.getDate().toString());
    require("http").createServer(function (req, res) {
      var d= foo.readG();
      var data=  {"x":d[0], "y":d[1], "z":d[2]};
      res.writeHead(200, {'Content-Type': 'text/plain'});
       res.write(JSON.stringify(data));
       console.log("x " + d[0] + " y " + d[1] + " z " + d[2]);
     // res.write("x " + d[0] + " y " + d[1] + " z " + d[2]);
      res.end();
    }).listen(80);
  }
});

But this code won't execute. The clock code parts will work on their own, but as soon as I try to initialize the Clock module with the previous sensor/wifi code, it won't work anymore.

Any ideas?

BR
Daniel

[gfwilliams]

Posted at 2015-01-07 by @gfwilliams

Hi Daniel,

What do you mean by 'won't work anymore'? Are there any error messages, or does it fail in some specific way?

[espruino-discuss]

Posted at 2015-01-07 by stozk

The web IDE will just stop after ">echo(0);" with no error message.

If I leave out just the Clock module import it will execute the code up to the point where it tries to initialize the clk variable and throw an error message, so I guess the Clock module import seems to be the problem somehow.

[gfwilliams]

Posted at 2015-01-07 by @gfwilliams

Thanks - and you've got the latest firmware (1v71) and you're running on the Espruino board?

Can you try re-writing your code as the following and see if it helps?

var foo = require("ADXL335").connect(C3,A0,A1);
var wlan = require("CC3000").connect();
var Clock = require("clock").Clock;

function onInit() {
  wlan.connect( "xx", "xxx", function (s) { 
    if (s=="dhcp") {
      console.log("My IP is "+wlan.getIP().ip);
      var clk=new Clock("Jan 07, 2015 12:38:00");    
      console.log(clk.getDate().toString());
        require("http").createServer(function (req, res) {
          var d= foo.readG();
          var data=  {"x":d[0], "y":d[1], "z":d[2]};
          res.writeHead(200, {'Content-Type': 'text/plain'});
         res.write(JSON.stringify(data));
          console.log("x " + d[0] + " y " + d[1] + " z " + d[2]);
      // res.write("x " + d[0] + " y " + d[1] + " z " + d[2]);
        res.end();
      }).listen(80);
    }
  });
}

onInit();

This was an issue a while back (the time taken to execute the code in modules meant that Espruino wasn't ready to accept more code later on) but I really thought that it was sorted now.

[espruino-discuss]

Posted at 2015-01-07 by stozk

Yes, it's running 1v71.
Sadly this didn't work, it just doesn't continue after ">echo(0);" as soon as the Clock module is added for import. I'm now trying to get it running in standalone by importing the modules from the SD card.

I've also tried to remove the ADXL335 accelerometer code and it also worked.

I'll try another accelerometer sensor, looks like the Clock module and the ADXL335 don't like each other for now.

BR
Daniel

[gfwilliams]

Posted at 2015-01-07 by @gfwilliams

Can you first try:

var foo = require("ADXL335").connect(C3,A0,A1);
var Clock = require("clock").Clock;
var wlan;

function onInit() {
  wlan =  require("CC3000").connect();
  wlan.connect( "xx", "xxx", function (s) { 
    if (s=="dhcp") {
      console.log("My IP is "+wlan.getIP().ip);
      var clk=new Clock("Jan 07, 2015 12:38:00");    
      console.log(clk.getDate().toString());
        require("http").createServer(function (req, res) {
          var d= foo.readG();
          var data=  {"x":d[0], "y":d[1], "z":d[2]};
          res.writeHead(200, {'Content-Type': 'text/plain'});
         res.write(JSON.stringify(data));
          console.log("x " + d[0] + " y " + d[1] + " z " + d[2]);
      // res.write("x " + d[0] + " y " + d[1] + " z " + d[2]);
        res.end();
      }).listen(80);
    }
  });
}
onInit();

I didn't spot the first bit with wlan in - it might be the delay caused by trying to connect to the CC3000, so it may help to move it to onInit.

But to get running from the SD card, try:

var foo = require(""+"ADXL335").connect(C3,A0,A1);
var wlan = require("CC3000").connect(); // you don't need a module for this
var Clock = require(""+"clock").Clock;

Otherwise the Web IDE will load the modules in anyway - the ""+ fools it into not doing so.

[espruino-discuss]

Posted at 2015-01-07 by DrAzzy

Are you sure it's not the size of the data it's sending, and some sort of communication issue? That would explain the "it works if I remove any one part" effect... It isn't even doing anything until onInit() runs... Try using throttled send to make sure it's not that (under settings -> communication)?

[gfwilliams]

Posted at 2015-01-07 by @gfwilliams

It isn't even doing anything until onInit() runs...

It's doing 'wlan.connect()' which if I remember takes a second or so? Anything after that would just fill up the USB buffer, and eventually the PC just stops bothering to send the data and drops it :(

[espruino-discuss]

Posted at 2015-01-07 by stozk

Thanks Gordon, moving the wlan connection to onInit seems to be the solution, it works now ;-)