![]() In your sketch, you even dont bail out of the while-statement. ![]() A while-statement to keep doing something or to wait a long time is often not needed. The more responsive and the more things you want to do, the more the loop() should run. Interestingly this while loop only runs once and then goes back to the top of void. To check parts of the code, i have placed an infinite while loop after the serial communication is done. on the Arduino code no matter what i do or command after the serial run, it skips through it. I am sending strings via serial port to and from a python program. In the void loop (and any function called from the void loop) you don’t want to block the execution of the code too long, especially if you plan to do some kind of multi-threading with your Arduino. The 'Arduino way' is to let the loop() run over and over again as many times as possible. Hi there I am fairly new to arduino coding. I think the problem lies within the While loop. Don’t bloat your void loop, just as you don’t bloat your main in a standard C/C++ program. But I also want the system to act in such a way that for as long as you press one button, the other buttons should not function, even if you press another button. This next sketch shows you how to write a non-blocking delay that allows the code to continue to run while waiting for the delay to expire. After your desired number of dots, clear the output. You need to run your millis () timer and increment a ‘dot’ counter every (350ms) then as the timer elapses, bump the counter, and print a dot. ![]() So I have to write Analogwrite and delay function for each 'for loop'. You can’t use delay (), and indeed, you shouldn’t use a for () loop in this way - they both block your code from executing anything else. There is no need for a while loop because the loop() function repeats anyway as the comment says. one that completely stopped the code from doing any thing else while the delay was waiting to expire. But when I tried this in arduino program my led didnt emit any light. The previous sketch used a blocking delay, i.e. if you release the button, the led will turn of. How to write a non-blocking delay in Arduino. I want to create a system that for as long as you press a button, the led stays on.
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