Multiple void loops arduino nextByteOut(); // call this one or more times each loop() to release buffered chars loopTimer. Arduino: About multiple void loops and functionsHelpful? Please support me on Patreon: https://www. Part 1 void loop void loop() { counter++; Serial. That example also gets to what the parenthesis are for. e loop1, loop2, loop3. loop() function. void setup() { // code written in this block will run once: Serial. if there was a Delay(infinite) that would be great to put in my primary for loop but life just isnt that great. I want to run them at the same time but in different loops. And if you find any problems with it please tell me, I am creating the Love-O-Meter from the guide book as well as project six. I've heard that in general this is possible with threading, but I have no idea how to do it. If I have: void A(); void B(); void X(); how to combine multiple void as just one like: void multi() { void A(); void B(); void X(); } Thanks Every Arduino sketch includes void setup() and void loop(). So If sensorvalue < 500 perform program loop 1 If sensorvalue > 500 perform program loop 2 Once it starts executing a loop it must never return. Programming. What I have so far is shown in the code; # Jun 27, 2011 · How can I run two loops or processes at the same time? I'm trying to separate two different processes so they don't interfere with each other. Instead, Arduino offers various alternatives and techniques for running multiple tasks within a single sketch, making it accessible for users of all skill levels. The 2 loops contain different data sets and multiple if statements, so using a main IF sensorvalue decision doent work. You mean that you were writing some code with multiple functions, none of which returned a value and hence were declared void. g. My calculations and/or timings are off as I'm getting 5X or more higher RPM results. It works but esp8266 take a lot of time to execute commands. … Apr 6, 2016 · Im trying to get multiple void loops using the scheduler. I am attaching my simple code and Crash logs. available() != 0); // Wait for serial unput int Idx = 0 Jul 25, 2016 · Hi I am trying to run two loops simultaneously. I use a menu funtion to switch between 5 saperate function. Here is the code Dec 4, 2019 · In addition to using the do construct incorrectly, you are also using an approach that won't work. Bei der letzten Anweisung angekommen (schließende Klammer), springt der Sketch zum Anfang der loop()-Funktion (öffnende Klammer) zurück. O. Aug 13, 2021 · I think it's to do with the frequency of the loop vs. What you most propably are looking for is called the Superloop. Goals. Oct 31, 2015 · hello, I have noticed reading through different coding that in some cases multiple loops are involved the first one of course void loop() but later on there may be another like void add_this() and then another void XXXXXX() why is it used? can someone explain how they function within the code. Here is the code: (ignoring the stuff before void setup) void setup() { pinMode(MODE_BUTTON_PIN, INPUT); pinMode(CAPACITANCE_LED_1, OUTPUT As mentioned in other replies, you've only got one core and no operating system on a basic Arduino (e. We can use the code below as well to run while loop infinitely. They could also have been named function2 and function 3 It's simply like @Septillion said: Simply, you can't Apr 16, 2018 · So I have been using the Arduino IDE and I am sort of a newbie when it comes to troubleshooting issues. com/roelvandepaarWith thanks & praise to God, and with t Nov 19, 2015 · Code: Select all // Include Scheduler since we want to manage multiple tasks. // It also contains a state machine, a code tool of value beyond what the demo does. I am using a 16x2 lcd with a UNO R3. println(analogRead(A1)); Serial. I also saw in a post that this may not be possible on the arduino. the SOS was pretty easy but im not sure how to limit the void loop to 5 times. 17: 2057: May 5, 2021 Arduino: Multiple void loops with ESP8266Helpful? Please support me on Patreon: https://www. In the main loop of the code, two for loops are used to loop incrementally, stepping through the LEDs, one by one, from pin 2 to pin seven. The following code shows what happens: (the output follows the code) void loop() { while (Serial. Put simply this means keeping track of the next command for each task, then doing one thing in each task per loop(). What Is void loop()? Many people, especially beginners, will use two main functions in the Arduino IDE: void setup() and void loop(). startLoop(loop3); } void loop() { // put your Mar 23, 2014 · You don't need two loops for that. com/roelvandepaarWith thanks & praise to void setup(){ for(i=0; i<10; i++) { pinMode(i, OUTPUT); } } Here, we declare a loop control variable called i and set it equal to zero. print("Counter: "); Serial. The void loop() function is where you code all the things you want to run repeatedly. dowhile loop. These are labelled firstSequence, secondSequence etc. Without them, your program won’t run! The code that you put inside void setup() will only run once, and that will be at the beginning of your program. In order have less of a shaky effect I only want the steering to take a number every 10 numbers or every We would like to show you a description here but the site won’t allow us. How to use loop() Function with Arduino. This is my code. The loop control variable holds the loop count, which will increase by one each iteration through the loop. com/roelvandepaarWith thanks & praise to God, and Feb 16, 2020 · hi is it possible to have more than 1 void loop? Arduino Forum more void loops. (If this is confusing please let me elaborate). Dec 5, 2016 · Hey guys i am currently working on a project and i need at least 2 void loop functions what i am trying to in my project that i need a lot of pwm pins on arduino uno (and i cant get a arduino mega at the moment) and i found out that pwm function on arduino can be copied by digitalWrite command but i need this function to be running forever in my sketch so can i have 2 loops in arduino IDE Mar 1, 2024 · Discover the possibilities and limitations of using multiple void loops in Arduino Uno for enhanced functionality in your projects. Alle Anweisungen, die sich zwischen der öffnenden und schließenden Klammer befinden werden der Reihe nach ausgeführt. Few of them (if in its own code) have acode line before setup(), to combine them I add all the code before setup() in 1 place above setup() while the function in a saperate loops i. The for loop will continue looping as long as the condition is true. Learn loop() example code, reference, definition. h> int led1 = 13; int led2 = 12; int led3 = 11; void setup() { Serial. The demo sketch in this Thread illustrates the process. I know that you can't just put void loop(){ //code here } void loop(){ //code here } I was just wondering if there was any other way. 6. any insight would be great! Jan 1, 2020 · The root of this behavior is that when the program runs delay() function - nothing else could run (digitalwrites, checks, conditions, etc. It's not a bug and you don't normally break out of it. You just need to interleave the actions. At the moment I have code for all 3 seperatly and they work individually but I was not able to bring them together yet so they can work seperatly but into one code for the arduino. the attachInterrupt. It is literally being called repeatedly by the main function. I use the method of multiple void loops. ) are the two most important & useful programming concepts. As you can see it is running infinitely. ) until the delay() time is passed. int ledPins[] = { 1, 7, 0, 6, 8, 9, 10, 13 }; // an array of pin numbers to which LEDs are Nov 18, 2019 · How can I run two codes simultaneously like they are both in loop statements but separate ones. Sketch 1 #include <SevSeg Nov 10, 2017 · Iv'e tried to modify the code but I don't know any replacement voids for void setup, here's my code. If one task needs to run at a faster speed than another task you can use a timer in your loop to decide what to do next. Tasks gets created execute first loop and then ESP crashes. Nothing else. h function on my uno. What i understand is this: any variable declarations outside the void setup() and void loop() and any other voids are global and available to all functions void setup() is run once in sequence when the unit is started up void loop() is looped indefinitely what i don't quite understand is Arduino: Multiple void loops with ESP8266Helpful? Please support me on Patreon: https://www. how to do this? I am trying with below code but its not working in loop 1, servo will be operated if photoresistor value change above 50 and in loop 2, servo will be operated through POT. Oct 14, 2021 · Arduino: Can I make multiple void loops with Arduino Uno?Helpful? Please support me on Patreon: https://www. The Arduino main loop() is an exception. Jan 18, 2025 · I am re-working an old project from about 9 years ago, to control/monitor the operation of a machine. What you can do is: run two separate piece of code one after the other, fast enough that they look to be running in parallel or run one continuously and run the other when an event occurs. A n. 5 ide // Include Scheduler since we want to manage multiple tasks. How to use the Scheduler library. Feb 11, 2015 · azibux1: Is it possible to have two loops so I can have one on a 2 minute delay and one on a 10 second delay? You cannot have such thing as a "delay()" which means "blocking every program execution for x ms" in a "cooperative multitasking" program. S style sketch run full loop 5 times and stop. push button on the control box allows the operator to select a mode of operation, from a choice of 6, stepping through each one with a button press. No, the loop only loops because main (see main. Those loops (loop2() and loop3() ) are just names for functions, controlled by the scheduler library. The second loop is of course the steering. I am trying to create 2 tasks running in parallel. available() != 0); Next I want to read the input with: while (Serial. In this article, you’ll learn about the commonly used loops in Arduino: for loop. If you want a function to loop until some condition is met then look at using a while loop, but make sure that it is possible for the code to exit the while loop otherwise it will repeat the code endlessly Apr 6, 2019 · I want to run multiple sketches on one sketch. for Loop Example; How to Use a while Loop in Feb 8, 2019 · Hi, I want the sketch to wait for serial input using: while (Serial. patreon. #define trigPin 10 #define echoPin 9 #define buzzPin 2 #define trigPin2 5 #define echoPin2 6 #define servoPin 7 #define led 3 long duration2, dist, average; long aver[3]; #include <Servo. I have 2 distinct loops or sets of code to run depending on the initial value of a sensor. i am thinking that a Sep 6, 2018 · Hi all, I'm pretty new to programming and i'd like some advice on how the arduino sequences instructions. For the programme I am working on, this would make the programming much easier to use Apr 5, 2016 · Please explain why you think that comparing the key against ourcode[CurrentPosition] will ever be executed (when currentPosition equals 1) and the second key was anything but 4. Schematic: Code. May 4, 2020 · You can have loops inside loops (nested loops), loops inside functions, functions inside loops, and functions inside functions, etc. o. The code has to be modified to be non-blocking best regards Stefan Jul 24, 2018 · Die loop()-Funktion ist der Hauptbestandteil unseres Sketches. " Apr 23, 2025 · Connect six LEDS, with 220 ohm resistors in series, to digital pins 2-7 on your Arduino. I want to make smart trash bin with a buzzer, 2 Sensor Ultrasonic HC-SR04 and servo. Feb 26, 2012 · I need help again. Demonstration code for several things at the same time - Project Guidance - Arduino Forum Jul 16, 2015 · you should simply write code to compute the state necessary for each led based on the truth table and write out that state to the specific digital pin only once; you would not need so many if/else conditions and so many calls to the digitalWrite function either; by the way your code will also work fine if you update your assignments to digitalWrite statements in your code in all the if/else Nov 19, 2015 · Code: Select all // Include Scheduler since we want to manage multiple tasks. ---Disclaimer/Disclosure: Aug 15, 2017 · Hi, I have been searching for an answer but cant find a similar question; Is it possible to have multiple loops in a programme and a command prompting which loop to go to at a certain point. #include <Scheduler. Sketch_4PIN_FanController. That causes your code to "stick" in the body of the do-while statement while the while condition is true, which prevents the rest of your code from executin Hi, i dont know if I'm doing this right. After creating a setup() function, which initializes and sets the initial values, the loop() function does precisely what its name suggests, and loops consecutively, allowing your program to change and respond. Then we set the condition. It's not that the loop function on it's own repeats. Let’s talk about the loop function first. begin… Jul 9, 2015 · at the moment i am trying to make an arduino control an lcd and an led array at the same time but my two sample peices of code are clashing here are the samples i started with (i removed the introductions and adjusted the pins to suit me) int timer = 100; // The higher the number, the slower the timing. the loop that contains the delay(60000) will block for 60 seconds. Nov 27, 2021 · Hallo, ich würde gerne wissen ob man bei einem Arduino mehrere Void Loops einsetzten kann. If so, you go next state which writes tp pulseopto1 and gotes to WAIT_STATE_2 for example again setting start time to current time. I am creating code for my project and I ran into an issue that involved the framework of the code itself. Denn ich habe ein Ampel Modell gebaut und möchte jetzt das per Tastendruck eine davon unabhängige Led leuchtet. void loop ()-Funktion Nov 6, 2013 · So what happens is that in your loop, upon button press, you go to for example WAIT_STATE_1 and set start time to current time, next time in the loop, you check if enough time has passed. Jul 20, 2017 · I am not able to combine the below two sketches. Table of Contents. I have to make an S. startLoop(loop2); Scheduler. or point to a tutorial? thank you! Jun 9, 2021 · I was writing a code with multiple voids. Everything else is working great, fan speed increases decreases based on temps. The first loop is a compass that should run constantly which is using a running average of 10 numbers. 🙂 I was wondering if I could run multiple loops at once. startLoop(loop3); } void loop() { // put your Dec 17, 2015 · Hello how can I fix the errors in the arduino 1. For example, when a switch is low the void loop runs, when a certain switch goes high - goto - "void loop 2" etc. Can someone please let me know what is wrong with the below code causing ESP crash and reboot. . this is for example, actually I am trying to write bigger code and want to avoid if-else statement, hence checking how Apr 29, 2017 · You have no "void loops" but you do have multiple loop() functions whose return type is void, ie they do not return a value to the program that called them. cpp in the core) is the "real" program that is running on your micro and it calls loop over and over. Tasks are then executed if a timing condition matches. Sep 29, 2014 · Setup a 'state server' in your loop(). e Arduino Zero, MKR ZERO, MKR1000 WiFi and Due) to run multiple functions at the same time. available() > 0) {} The result is that ony one character is read. A loop that you can't get out of is called an infinite loop and it's usually a bug when you are "stuck in a loop". // task StopGo. setup is run exactly once at the beginning of your program. First time I've used the scheduler function and it doesn't seem to like it. Apr 23, 2025 · Arduino boards based on SAM and SAMD architectures (i. This is basically an endless loop, containing all tasks of your system. In this case, we increase the counter by 1 (so the first time we enter the loop, the counter goes from 10 to 11). com/roelvandepaarWith thanks & praise to God, and with t pretty basic question. h> //servo library Servo Sep 20, 2011 · Hello, I have a question about my project table and if the arduino mega would be able to handle it one way or another. Here's an example: void loop() { Serial. Feb 15, 2023 · Hi all. Jul 6, 2016 · Hi I am new to Arduino. 1 KB) Since Arduino doesn't support multiple loops, I tried to w. Is this the case? If so, what other options do I have? Would it be best to try to incorporate the libraries into a single library? The basic Jan 26, 2017 · On Arduino (and on most other micro controllers for what it matters) you CANNOT do two things at the exact same time, so forget about running two loops in principle. The table consists of 3 different sections that do different things using the arduino. I am using the compass to steer an RC car and when I just let it go the servo gets very jumpy. Oct 7, 2024 · You can use loops in Arduino to execute a block of code multiple times until a specific condition has been met. Feb 23, 2021 · Hi, I want to run "loop 1" if switch button is high and "loop 2" if switch button is low. begin(9600); // initializing the serial communication while(1) // while loop stated { Serial. -- Block - unBlock on a keystroke to stop serial monitor // task LoopCounter -- lets you know how often void loop() ran last second. check(bufferedOut); processUserInput(); blinkLed7(closeDampler); // call the method to blink the led printTemp(); // print the temp Arduino is designed to be a beginner-friendly platform, and supporting multiple void loops directly may complicate the programming process for beginners. println(counter); delay(1000); } The void loop function is now called and every instruction you’ve provided here will be executed. The rest is read on the next loop. Multiple Void Loop . You generally should not use a do-while statement in Arduino. One example is when you want to turn your robot on — that does not happen multiple times! Oct 23, 2021 · void loop{ <code> otherLoop(); } void otherLoop(){ <code> } Due to the blocking nature of delay() inserting the TO's code inside loop and otherLoop does not work. ino (4. while loop. In general the name of each function must be unique (there are exceptions) and another fly in your multiple loop ointment is Apr 8, 2020 · The main difference is that the main loop normally runs forever (with most of you other code, including other loops inside that main loop) whereas the other loops usually end or you "break out" under some condition. void loop() {bufferedOut. The code below begins by utilizing a for loop to assign digital pins 2-7 as outputs for the 6 LEDs used. By setting up a number of other functions that run the same way loop does, it's possible to have separate looping functions without a dedicated timer. Oct 6, 2022 · // This demo also addresses loops inside of void loop(), which can hog cycles terribly. an Uno. Apr 30, 2017 · It is also not in accordance with the idea of programm flow in the Arduino world - the sketches - where you have two methods on the highest (user accessible) level: void setup() and void loop(). How to Use a for Loop in Arduino. Because you can't make two loops run together, how would this code be able to run both, the speaker/led and rgb at the same time? int redLed1 = 8; int redLed2 = 9; int whiteLed = 10; int blueLed1 = 11; int blueLed2 = 12; int i=0; void setup() { pinMode(4, OUTPUT); pinMode(redLed1, OUTPUT); pinMode Aug 10, 2024 · I am moving from ESP8266 NONOS SDK to ESP32 with Arduino and learning it slowly. Following that loop is looped (hence the name) forever. println("hello world"); // printing hello world on serial monitor } } void loop() { // put your main code here, to run repeatedly: } Apr 23, 2020 · I have a problem trying to make a void function that will go through all of my functions,and will run every of that function for specified duration of time,10 second would be good,my code has a button that alows me to switch betwen functions on changed state,but i would like to make one more function that would do that automaticly every 10 second,and i would enter that function with a button Nov 14, 2010 · I made two separate libraries, and I need the code in void loop, below, to run simultaneously. With that out of the way, the answer to your questions is no. The loop() handles the user input temperature simulation and adds these two extra tasks on the end. Oct 13, 2016 · How can I run multiple void loops that do not depend on each other like there. What is Arduino loop(). void Setup() { setup1(); setup2(); } v Nov 6, 2021 · Arduinos are single core controllers, so you are not able to run multiple loops in parallel without additional tasking features. h> int ledPin = 9; // LED connected to digital pin 9 int ledPin2 = 10; // LED connected to digital pin 9 int ledPin3 = 11; // LED connected to digital pin 9 void setup() { // put your setup code here, to run once: Scheduler. What I require is to either run both the loops together or find a way to run both the functions inside a single loop. Loops and conditional execution (if-statements, etc. const int sensorPin = A0; // pin that the sensor is attached to const int ledPin = 9; // pin that the LED is attached to // variables: int sensorValue = 0; // the Nov 8, 2019 · I have a problem. ) You write the OS and are responsible to handle timing if you want to do multiple things "at once. ulcnw xdndeh rby gfnnn wjn bjxzo zcia ifctm vnugawi ujoia osj dkmws bsyt rsdqc gpml