search

Aircoookie / WLED

Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi!
https://kno.wled.ge
MIT License
14.66k stars 3.15k forks source link

Time wrong after some day #4021

Open emmexx opened 3 months ago

emmexx commented 3 months ago

What happened?

Sometimes, usually I notice the problem in the morning, the time of wled is wrong, around one day behind. It happened 3 times since I installed 0.14.1 ESP8266 at the beginning of March 2024. After rebooting the time was set correctly.

To Reproduce Bug

I use the Analog clock overlay and NTP from 0.wled.pool.ntp.org WLED is wifi connected to a router and the router is connected to internet using my phone hotspot. So there is no internet connection when I'm not home. But I'm home for many hours every day. I didn't leave the house for a month expecting to find the clock with the correct time.

Expected Behavior

Time should be in sync with the value downloaded from the ntp server.

Install Method

Binary from WLED.me

What version of WLED?

WLED v0.14.1 (build 2401141)

Which microcontroller/board are you seeing the problem on?

ESP8266

Relevant log/trace output

No response

Anything else?

No response

Code of Conduct

blazoncek commented 3 months ago

The issue arises from WLED not getting correct NTP response. Not strictly WLED issue, but network related. Ensure clear path (and low latency) for NTP responses, possibly by using alternate NTP servers.

emmexx commented 3 months ago

@blazoncek My doubt was that after a number of failed attempts to connect to the NTP server, WLED stops doing it and so it has to rely on the ESP8266 RTC clock. If that is the case I can set a preset to reboot it every night.

blazoncek commented 3 months ago

WLED requests NTP time approximately twice per day, retrying unsuccessful request every few seconds. If the NTP library fails to process retries correctly is is an issue of the library, not WLED.