I've done a project with an ESP8266 board but after approximately 2 month it stops working correctly, I suspect the problem is related to the millis() value overflow but since the board it's mounted in an inconvenient position I would like to do the debugging process on another board at my desk and …

I found the problem(s) and it wasn't millis(). When the board loses the WiFi connection the code in the loop() should reconnect to the WiFi and to the MQTT server but instead for some reason it was only trying to reconnect to the MQTT server causing an infinite loop becouse it wasn't connected to t…

Can you put a test together using micros? it overflows a lot faster obviously.

We could walk you through every possible millis permutation, but your answer will appear within two or three replies if you post your code (in code tags).

Please post your complete sketch here so that we can see what you have done Basically, if you use unsigned longs for timing variables, subtraction to test for end of period and the period is not longer than 49 days then the millis() overflow will not cause a problem

If you are using variables for current, previous, and duration then these are typically unsigned long (32 bit), and logic will/can overflow in approximately 49 days. If you use unsigned int (16 bit), you will overflow in about 66 seconds. The example below demonstrates this. unsigned int current;…

[image] lastchancename: We could walk you through every possible millis permutation... Yeah. Don't do that. I already have. The original poster can search the forum for that.

Please read [image] Reset millis(); Programming Questions Good morning, I use a push button... I'd like if we press the first the millis() counter starts. If I press a second time reset millis ( millis() counter becomes = 0 ) If I press it a third time, millis() start…

The ESP8266 has a Timer API that could be scaled to timeout simulating a millis() overflow for the debugging process.

[image] wildbill: Can you put a test together using micros? it overflows a lot faster obviously. Yes, this is one reason I like micros() better than millis(). If something is going to fail, you want it to fail fast so that you know about it and can fix it.

I was hoping that it was as simple as doing timer0_millis = 4294367295 as I seemed to have read but at this point I should just open another topic to ask the problem directly

[image] Katoz: should just open another topic to ask the problem directly NO - don't do that If you want to experiment with rollover then test it using micros() or write your own myMillis() function that increments a variable and use that as a substitute for the value returned by millis() in…

Change millis() value

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alto777 May 12, 2022, 1:39am 11

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Change millis() value

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