Several Question for implementation.

[khawajamechatronics]

Hi,

I hope you are doing well. I am using this awesome library in a project. I have several queries. Instead of creating Issue of each query I prefer here as a thread.

I am not sure if there is any other platform where @ropg discuss issues or queries.

1- local_or_utc = UTC_TIME; //Does this means UTC 0 time or GMT +0 time got from NTP? or set locally? local_or_utc = LOCAL; // Whats the difference here? Does it is referenced to any time zone set. or just Arduino Time without NTP?

Thanks

[khawajamechatronics]

Using myTZ.setDefault(); Does it affects UTC_TIME? Does it affects LOCAL_TIME?

[khawajamechatronics]

After going through several open issues, it seems Timezone is not fully working. Only UTC time is working.

As per SetEvent function it seems it only using UTC time. for (uint8_t n = 0; n < MAX_EVENTS; n++) { if (_events[n].function && nowUTC(false) >= _events[n].time) { debug(F("Running event (#")); debug(n + 1); debug(F(") set for ")); debugln(UTC.dateTime(_events[n].time)); void (*tmp)() = _events[n].function; _events[n] = { 0, NULL }; // reset the event (tmp)(); // execute the function } }

[ropg]

Hi there,

I'm not sure I understand what you mean with the first question. NTP time is always in UTC. ("UTC 0 time or GMT +0 time got from NTP" ?), one has to add or subtract to get to data in any local timezone, which is what ezTime should do for you. If you create a timezone and set it to "Asia/Karachi", it should get the Posix string of PKT-5 from the server, which means you are 5 hrs away from UTC.

setEvent can be supplied the time in local time or in UTC, as with most other functions in ezTime. Internally it uses UTC.

I am quite busy working on this website, so replies may be slow sometimes, but I'll try to answer if you provide me with clear simple three-line code segments that are not working for you.

[khawajamechatronics]

Thanks for response. I am still exploring the library so apologize if I am unable to explain things well.

myTZ.setLocation(F("Pacific/Auckland")); myTZ.setDefault();

It will set default timezone.

But when I call Serial.print(hour(TIME_NOW,LOCAL_TIME)); or Serial.print(hour(TIME_NOW,UTC_TIME)); it prints same results. in short UTC_TIME or LOCAL_TIME has no affect on several functions I have tested.

May be issue #10 ? Also setDefault affects on which functions. Does UTC.dateTime() remains UTC 0?

Let me explain in more simple way. Using myTZ.setLocation(F("Pacific/Auckland")); myTZ.setDefault();

myTZ is declared in my Sketch, what is correspond internally. Like UTC is for GMT 0 what will be equivalent for myTZ? which can be called inside the sketch.

I assume it was LOCAL_TIME but it is not functioning properly.

In that case I have to play with library very carefully.

[khawajamechatronics]

Let me give you example with functions In Sketch myTZ.setLocation(F("Asia/Karachi")); myTZ.setDefault(); Serial.println(now()); In Source Code time_t now() { return (defaultTZ->now()); } So above results should have been printed UTC Seconds in ASIA/Karachi Timezone But it printed in GMT 0 time.

[ropg]

The first example does print two different hours for me. Are you sure your time synchronizes?

Can you try this sketch and post the output? (This assumes you have an ESP32 or something similar. Adapt to your environment if necessary.)

#include <ezTime.h>
#include <WiFi.h>

void setup() {

	setDebug(INFO);
	Serial.begin(115200);
	WiFi.begin("your-ssid", "your-password");
	waitForSync();

	Serial.println("UTC: " + UTC.dateTime());
	
	Timezone NewZealand;
	NewZealand.setLocation("Pacific/Auckland");
	Serial.println("New Zealand time: " + NewZealand.dateTime());
}

void loop() { }

[khawajamechatronics]

Yes this does print 2 different time.

I am talking about

#include <ezTime.h>
#include <WiFi.h>

void setup() {

	setDebug(INFO);
	Serial.begin(115200);
	WiFi.begin("your-ssid", "your-password");
	waitForSync();

	Serial.println("UTC: " + UTC.dateTime());
	
	Timezone NewZealand;
	NewZealand.setLocation("Pacific/Auckland");
	Serial.println("New Zealand time: " + NewZealand.dateTime());

	Serial.println(now());
	NewZealand.setDefault();
	Serial.println(now());
}

Should above 2 prints of now() be same or different? Considering defaults are changed using setDefault?

[khawajamechatronics]

@ropg I know you busy. I hope you find time to review this.

Thanks

[ropg]

I guess it should print two different numbers. Doesn't it?

[khawajamechatronics]

@ropg Apologize, I wanted to reference to different variable, yes now() prints different time after setDefault.

Can you check this code as its hitting exception when digitalClockDisplay is called.

Exception doesn't happen when I print hour,min,seconds or day month year, seperate but I combine both set as in code below its hitting exception. not sure why.

#include <ezTime.h>
#include <ESP8266WiFi.h>
long lastTimeMillis;
Timezone myTZ;
void setup() {
Serial.begin(115200);
while (!Serial) {
;  // wait for Serial port to connect. Needed for native USB port only
}
WiFi.begin("SSID", "PASS");
// Uncomment the line below to see what it does behind the scenes
setDebug(DEBUG);
waitForSync();
Serial.println("UTC: " + UTC.dateTime());
Timezone NewZealand;
NewZealand.setLocation("Asia/Karachi");
Serial.println("Pakistan time: " + NewZealand.dateTime());
Serial.println(now());
NewZealand.setDefault();
Serial.println(now());
// Serial.println(now(),UTC_TIME);
Serial.println(millis());
}
void loop() {
digitalClockDisplay();
events();
}
void digitalClockDisplay() {
if (millis() - lastTimeMillis > 5000)
{
// digital clock display of the time
Serial.print(hour());
// Serial.print(hour(TIME_NOW,LOCAL_TIME));
printDigits(minute());
printDigits(second());
Serial.print(" ");
Serial.print(day());
Serial.print(" ");
Serial.print(month());
Serial.print(" ");
Serial.print(year());
Serial.println();
lastTimeMillis = millis();
Serial.println(now());
}
}
void printDigits(int digits) {
// utility function for digital clock display: prints preceding colon and leading 0
Serial.print(":");
if (digits < 10)
Serial.print('0');
Serial.print(digits);
}

`

[khawajamechatronics]

Exception Decoder

[khawajamechatronics]

Library is very useful despite of minor issues or misunderstanding. Thanks for your work @ropg

[khawajamechatronics]

@ropg 2 important questions

• How to makeTime in specific timezone, currently it seems it maketime in UTC time zone

• Also in uint8_t Timezone::setEvent debugln(defaultTZ->dateTime(t)); debugln(UTC.dateTime(t));

prints same time when I have different default time zone,

Am I missing something or is it a bug?

[khawajamechatronics]

@ropg It seems the issue is debugln(defaultTZ->dateTime(t)); as it shows incorrect time and it confuses, can you let me know how to show correct time.