I want to print the time on the serial monitor at the start and end of a signal (Help)

[ToddL1962]

@digital-space

What is the difference between them.
The problem here is that the iterative loop is in conflict with the void loop function. Because instead of working only once and checking the condition, it continues to work every time.

X=1 is an assignment. X==1 is a comparison. Putting an assignment in a loop condition doesn't make sense. Indeed, a comparison in a loop conditional makes no sense unless you change the condition within the loop.

I have no idea what you mean by "iterative loop is in conflict with the void loop function".