Our user guide will focus on learning how to generate Timer1 and Timer2 interrupts of Arduino. These timers will be programmed using registers which we will learn about. They act as a clock and are used to keep track of time based events. The Arduino comes with three timers known as Timer0 (8-bit timer), Timer1 (16-bit timer), and Timer2 (8-bit timer). After the set commands are executed, the program resumes again from the same position. Timer interrupts in Arduino pause the sequential execution of a program loop() function for a predefined number of seconds (timed intervals) to execute a different set of commands. How to use Arduino External Interrupts explained with examples.Interrupts are the section of hardware and software on a microcontroller which is capable of monitoring the external event on the input pin when any external event is monitored then the program stops sequential execution at this point and jumps into their ISR function which is an interrupt handler then after executing the ISR function, it goes back to the point where the external event is monitor than it completes sequential execution. But there are few tasks that only execute when a special event occurs such as an external trigger signal to the digital input pin of a microcontroller. For example, we want to perform certain tasks and these tasks execute sequentially in your Arduino program. Interrupts are used to handle events that do not happen during the sequential execution of a program. This guide is highly useful for people who want to increase the productivity of their program sketch by incorporating timer interrupts to enhance the capabilities of their microcontroller. ![]() ![]() However, in this user guide, we will focus on Timer interrupts of Arduino, its introduction, and how to configure them in our Arduino. In a previous tutorial, we looked at Arduino external interrupt where the interrupt was caused by is caused by the external hardware module. Hardware or external interrupt and Timer interrupt. There are two types of interrupts for the Arduino microcontroller. ![]()
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