Timer0_mills error

[StefanL38]

Hi @say2k

indeed you should confirm or correct what @johnwasser was asking

@johnwasser

It looks like what you are doing is:

After 1 minute, move to -7000
After 5 hours, move to -3200
After 6 hours, move to 0
After 7 hours, move to 3200
After 8 hours, move to 6400
After 11 hours, move to 0
If the button is pressed, move to 0 and do nothing for 2 hours.

is this a correct description of what you want the code to do?
confirm or correct.

If it is not correct post a corrected description in the style like johnwasser has written it.
the character of how johnwasser described it is
avoiding all programming terms
just use
time and step-positions

You are trying to reset function millis() to zero.
This works for an arduino uno just fine.
The

@say2k

Arduino Uno Wifi Rev2

this board uses the ATmega4809 and a different core.
Core here means the basic code that "translates" the C++-functions like pinMode(), digitalWrite() etc. to adress the real hardware of the ATmega4809.

The people who have written this core seem to have decided to not use the core-variable
timer0_millis anymore.

You should'nt mess around with core-variables anyway. If you manipulate core-variables you are in the danger of screwing up things.
Your code does some timing things which can be quite easy done without resetting the function millis().

You seem to not yet fully understand how function millis() works and how to use it.

I have written a tutorial that shall explain timing how you are using it.
This tutorial is dedicated to beginners and shall be explicitly easy to understand.
To improve the tutorial questions are always welcome.

Example-code for timing based on millis() easier to understand through the use of example-numbers / avoiding delay()

non-blocking timing. Execute code only from time to time. There are a lot of different ways to learn programming. This thread wants to add another approach that is different to the yet existing ones. UPDATE 06.01.2023 if you are mainly interested in applying non-blocking timing you can do a quick read of this short tutorial / demonstration If you are intersted in understanding the details how it works go on reading here. I use an everyday analogon in this post to explain the basic principle …

best regards Stefan