Disconnected operation about ntpclient HOT 17 CLOSED

Great. Thank you so much. Not sure if this interesting to others, but I see that in most examples the time zone/daylight saving is hard coded. I have developed a lib that gets time zone offset/dst/lat/long/detailed address from google maps api. If interesting I can share it. Cheers.

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What you can do is check that you are connected before calling NTP.begin(). Included example does this when WiFiEvent is received. See this

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thanks. If I am connected (and begin has been called) and then it disconnects, what happens? does it break or block?
And if it reconnects later on, can it resume normal operations?
thanks

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As far as I remember, if ntp sync is triggered while there is no connection, 'getTime()` returns 0 value. It means an error. Besides an event with error code may be triggered.

When something wrong happens (timeout, no connection) short period is used instead of normal one to get sync as soon as connectivity is recovered.

So it should keep working normally. Even, it is not required that there is a continuous Internet connection.

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Is there an api to tell the lib to stop trying the sync and keep incrementino from last time acquired..?

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Hava a look to header file

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I see it now.

1. Shall I assume that time continue to advance (calculated locally) after stop() has been called?
2. what do i need to call to restart synchronization?
   thanks again!

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Maybe you should have a look at the code to see what it does. I'm sure that Germán doesn't have that information at the top of his head, and he would need to look through the code to find your answer.

Please remember that the code was made available for free, and that it doesn't mean that there is any obligation for support. Issues are meant for dealing with bugs. Not necessarily information requests.

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Maybe you should also take into account that I have been collaborating with German on a number of issues and he asked me to test his code several times, which I did.
Your message is utterly out of place. It means "help yourself" which is the opposite of the concept of community. If German believes the question should not be answered he can just do so. None of your business.

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There is always more to the story, on both sides. My apologizes if you have been making a meaningful contribution. I have seen some of your requests before.

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Take it easy guys. 😄 I have no problem to answer questions.

@MarcFinns This lib only manages time sychronization. Time keeping is done in TimeLib that works independently of NTPClient. So time goes running after NTP.stop(). To start syncing again you need to call NTP.begin() as usual.

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@MarcFinns Do you have it on a GitHub repository?

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Yes. Code is not as clean as yours though, more of a prototype / proof of concept... I have actually two:

1. Using google maps api. Very accurate but requires SSL and returns a large response so it often crashes with less than 20Kb free (https://github.com/MarcFinns/GoogleGeolocation)
2. Using other APIs, works better (https://github.com/MarcFinns/TimeSpaceLib)
   The second will be part of a larger project that I am building when I have time... hence not often.
   if interested / improving it let me know!

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Some weeks ago I needed same function for one project. I implemented geolocation to be used on ESP8266 and Arduino MKR1000. Maybe it helps.

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That is interesting. What web services did you use?
I needed:

• coordinates
• timezone
• location name

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Currently, I get location coordinates and accuracy only, using Google Geolocation API

You may use Google Time Zone API to get time offset after getting UTC time.

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I tried but https kills it if you have less than 20k of ram. That's why I went for the simple http ones...

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