# Arduino performing various tasks with millis functions

Arduino performing various tasks with millis functions genuine impediment when you attempt to do different things, such as following a catch press. For this situation

genuine impediment when you attempt to do different things, such as following a catch press. For this situation, it is important to actualize a sort of performing multiple tasks.

Indeed, this will add a couple of lines of code to your projects, yet this thusly will make you a more experienced developer and increment the capability of your Arduino. To do this, you simply need to figure out how to utilize the millis work.

It ought to be perceived that the defer work stops the execution of your Arduino program, making it incapable to do whatever else during this time-frame. Rather than stopping our whole program for a specific measure of time, we will figure out how to compute how long has passed before the activity finishes. This, obviously, is finished with the millis () work and a couple of companions factors to store our information. To make it straightforward, we will begin with the main instructional exercise called "Squint", yet for this situation we will flicker the LED immediately.

The start of this program is equivalent to some other standard Arduino program. First comes the statement of the relative multitude of required factors and I/O lines (for instance, line 13 for a LED). Here we likewise need a whole number variable to store the present status of the LED. It will be set to LOW in light of the fact that the underlying condition of the LED is off. At that point we will proclaim the variable "previousMillis" of type "unsigned long". Dissimilar to "int" long unsigned factors are 32 pieces, this is required for factors whose worth can get enormous - like the potential time we can expect until a move is made. The variable previousMillis will be utilized to store when the LED last flickered. There is likewise a "const long" type, which is additionally 32-digit, yet it doesn't change the worth, that is, it is for constants (for this situation for the span consistent). We'll set it to 1000 and use it as the interruption time, estimated in milliseconds.

const int ledPin = 13; // Variables will change : int ledState = LOW; unsigned long previousMillis = 0; const long interval = 1000; void setup() { pinMode(ledPin, OUTPUT); }

At that point we go into a perpetual circle. Keep in mind, rather than postponing, we need to compute how long has passed since our last flicker, for our situation 1000ms. On the off chance that the predefined time has passed, it's an ideal opportunity to change the condition of our LED.

To start with, we'll set the unsigned long "currentMillis" to "millis ()", which characterizes the current time in milliseconds. This will help us sort out if the contrast between the current time and the past time has surpassed 1000ms. To do this, we state: "If the current time less the past time when our LED was flickering is more prominent than or equivalent to our doled out estimation of 1000ms, save the last squint time as the past one." This will assist us with recalling how long has passed since the last flicker in the following circle crossing. At that point, if the condition of the LED is LOW, make it HIGH, in any case make it LOW. At that point utilize the digitalWrite order to show the present status on the LED.

void loop() { unsigned long currentMillis = millis(); if (currentMillis - previousMillis >= interval) { previousMillis = currentMillis; if (ledState == LOW) { ledState = HIGH; } else { ledState = LOW; } digitalWrite(ledPin, ledState); } }