Arduino for Beginners - 2022 Complete Course - Warnings About Interrupts - When to Use/Not to Use

The video tutorial explains the use of interrupts in programming, highlighting best practices and potential pitfalls. It emphasizes the importance of efficient interrupt handling, the limitations of using time functions within interrupts, and the need to consider alternatives like polling. The tutorial concludes with a recommendation to use interrupts only when necessary.

What is a key requirement for variables modified within an interrupt function?

• They must be declared as static.

• They must be declared as volatile.

• They must be declared as constant.

• They must be declared as private.

Why should you avoid lengthy operations inside an interrupt function?

• It can cause memory leaks.

• It will slow down the entire program.

• It may lead to missing important data or other interrupts.

• It can cause the program to crash.

What is the recommended action to perform inside an interrupt function?

• Print debug information.

• Perform complex calculations.

• Read data from a file.

• Toggle a variable and exit quickly.

What is a limitation of using time functions like Millis inside an interrupt?

• Millis will not increase during the interrupt.

• Millis will double the time value.

• Millis will cause the interrupt to fail.

• Millis will reset to zero.

When should you prefer using polling over interrupts?

• When you want to reduce power consumption.

• When you need to handle events immediately.

• When you can afford to miss some data.

• When you want to save memory.