setTime

[espruino-discuss]

Posted at 2016-01-25 by cwilt

I am trying to set the time on my Espruino loaded esp8266. I am using an http get request and getting a string like "2016-01-25T12:33:20+00:00" back from the server. When I try to set the time it never sets it correctly.

Using...
setTime(Date.parse("2016-01-25T12:33:20+00:00"));

If I do Date.parse("2016-01-25T12:33:20+00:00");, the ms returned is wrong. If this is not a proper format date string then what is?

[espruino-discuss]

Posted at 2016-01-25 by @gfwilliams

Moving this to the ESP8266 section...

I'm not sure setTime is implemented on ESP8266, but if it is, it takes the seconds since 1970 - and Date returns the milliseconds.

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Posted at 2016-01-26 by cwilt

I got it to work.

var timeS;
require("http").get("http://www.timeapi.org/utc/7+hours+ago?\\s", function(res) {
  res.on('data', function(data) {
    console.log("HTTP> "+data);
    timeS=Number(data);
  });
  res.on('close', function(data) {
    console.log("Connection closed");
    setTime(timeS);
  });
});

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Posted at 2016-01-26 by @allObjects

Neat!

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Posted at 2016-01-27 by @gfwilliams

I have some things here that do this, and it works fine for me:

        require("http").get("http://192.168.1.101", function(res) {
          console.log("Response: ",res);
          if ("Date" in res.headers) {
            console.log("Got Date ",res.headers.Date); 
            var date = new Date(res.headers.Date);
            var d = date.getTime();
            if (date.getMonth()>2/*Mar*/ && date.getMonth()<=9/*Oct*/)
              d += 1000*3600; // 1 hour daylight saving
            if (d>0) setTime(d/1000);
            else console.log("Unable to parse date!");
          }
        });

It just pulls the date field right off the HTTP headers, so all you need is a standard HTTP server.

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Posted at 2016-01-27 by cwilt

No local server in my home. Plan to create a http server that has current time with weather info etc. Will see if it runs out of memory before I get it done.

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Posted at 2016-01-28 by @gfwilliams

Just to add that literally any HTTP server will do - including google.com, or in some cases even your broadband router (if it keeps an accurate date).

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Posted at 2016-01-28 by AkosLukacs

@gfwilliams capitalize your last line, it's simply brilliant :)

Altho not exactly correct if you are other timezone than the UK, and want to get your local time.