![]() The Ticker library is more along the lines you suggest. I could see that as an optional argument to the constructor, but I think the elapsedMillis author (Paul Stoffregen PJRC) wanted to keep it as simple as possible. That would only be helpful if all of your tasks ran at a fixed rate. If ((currentTime - previousTime) > taskDelay) But before I go off and profess my love for elapsedMillis, I'd like to get your input.įor reference, here's a brief synopsis of the blink-without-delay/millis() method: unsigned long currentTime, previousTime Rather millis is an Arduino function to track. ![]() This is perfect for projects that need multitasking Millis on its own does not actually cause any delays or pauses to happen. I've tried a few different methods, including the Ticker library, but have come to rely exclusively on elapsedMillis for all my projects. The millis function to the rescue With millis you can cause a delay of sorts in your code, while still allowing background code to execute. arduino firstline7 unsigned long turnOnDelay 2500 // wait to turn on LED unsigned long turnOffDelay 5000 // turn off LED after this time These two values are arbitrary for this example. millis (), on the other hand, is a function that returns the amount of milliseconds that have passed since program start. Instead of trying to reset millis (), we will compare against itself later on. ![]() At minimum I'll cover the blink-without-delay method based on millis(), as well as the elapsedMillis library. A well known Arduino function is delay () which pauses the program for an amount of milliseconds specified as parameter. Much of the article will talk about ways structure a program to simplify the handling of multiple concurrent "tasks" with different timing requirements, based on my own experience.Īt a lower level, I'd like to discuss the pros and cons of the various methods to measure task time intervals. Working title: Beyond "Blink without Delay". This Arduino lesson actually this series of Arduino tutorials will have you knowing when to use the Arduino millis function, and when to use the arduino delay function. I'm thinking about writing an article* about how to implement cooperative multi-tasking on Arduino-compatible microcontrollers.
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