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This tutorial will discuss the methods to stop a loop in Arduino. There are two types of loops in Arduino: one is the void loop() provided by default and the other is created by the user in it. The loop created by the user can be ended easily using the break method. To end the loop of Arduino void loop(), you can use the following method.

Use Sleep_n0m1library stopvoid loop()

The method above will probably work on all Arduino boards, but the Arduino will continue to use power. Using Sleep_n0m1the library, you can put the Arduino CPU into a permanent sleep state until you reset it manually or using a timer. Note that this may not work on all Arduino boards.

#include <Sleep_n0m1.h>
Sleep sleep;
unsigned long sleepTime;  // how long you want the Arduino to sleep

void setup() {
  sleepTime = 50000;  // set sleep time in ms, max sleep time is 49.7 days
}

void loop() {
  // Your Code
  sleep.pwrDownMode();          // set sleep mode
  sleep.sleepDelay(sleepTime);  // sleep for: sleepTime
}

Once you have completed the code, make sure to use it Sleep_n0m1 库. This method will only consume a little energy. Use this link for more details.

Use exit(0)Stopvoid loop()

You can use the method after the code exit(0)to end the Arduino void loop(), but please note that Arduino.ccno method is provided to end this loop, so this method may not work for all Arduino development boards.

void loop() {
  // All of your code here

  // exit the loop
  exit(0);  // 0 is required to prevent error.
}

Note that exit(0)after that, your Arduino will stop working until you reset it manually. So make sure to use this method after your code has completed its task.

Stop using infinite loopvoid loop()

The above method may not work on all Arduino boards, so we have to use another method. The infinite loop method will work on all Arduino boards, but the Arduino will remain awake and continue to consume power. In this method, you can insert an infinite loop after your code. The Arduino will process your code, enter an infinite loop and stay there until you manually reset it.

void loop() {
  // All of your code
  while (1) {  // infinite loop
  }
}

If the Arduino goes into an infinite loop it will not return until you reset it, so make sure you do this when you are finished with your code 无限循环.