How to reset Arduino by programming?

How can I reset Arduino using Arduino code?
Answer

There are two way to reset Arduino by coding: hardware reset and software reset

Hardware Reset Arduino by coding

/* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/faq/how-to-reset-arduino-by-programming */ const int OUTPUT_PIN = 2; void setup() { digitalWrite(OUTPUT_PIN, HIGH); pinMode(OUTPUT_PIN, OUTPUT); Serial.begin(9600); Serial.println("How to Reset Arduino Programmatically"); } void loop() { Serial.println("Arduino will be reset after 5 seconds"); delay(5000); digitalWrite(OUTPUT_PIN, LOW); Serial.println("Arduino never run to this line"); }

Software Reset Arduino by coding

void(* resetFunc) (void) = 0; // declare reset fuction at address 0
resetFunc(); //call reset

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