Help with stepper motor code

Projects Programming
5

Your code is not very well formatted. You should use Ctrl-T to autoformat your code
instead of hardcoded numbers for IO-pins you should use meaningful names for the io-pins and everything else.

Using meaningful names for everything makes code much easier to understand and to maintain.

So which of the existing RemoteXY-buttons shall be used for the pause/resuming function?
Does the above posted code contain that button?
If yes which button is it?
If the code does not contain this button you should at least provide a code-version where the button is defined.

You seem to create the stepper-motor-pulses with these lines of code

  if (RemoteXY.button_r == 1) {
    digitalWrite(8, HIGH);
    digitalWrite(9, HIGH); 
    delay(10);
    digitalWrite(9, LOW);  
    delay(10);
    stepNo++;
  }
  else if (RemoteXY.button_l == 1) {
    digitalWrite(8, LOW);
    digitalWrite(9, HIGH); 
    delay(10);
    digitalWrite(9, LOW);  
    delay(10);
    stepNo--;
  }

I can only assume it because the IO-numbers "8", "9", say nothing about their purpose
You should use a stepper-motor-library.

I recommend that you use the MObaTools-library because this library creates the step-pulses automatically. You can start and stop the stepper-motor at any time and the MobaTools-library counts the steps for you automtically.

Last but not least whih exact type of microcontroller are you using?

So we need additional information from you for decent support