8.3. GPIO (General Purpose Input/Output) Peripherals

Try these first

1. 1.

   What does GPIO stand for?

   Hint

   Think about what each word means.

2. 2.

   What are the two modes GPIO pins can be configured to?

   Hint

   Consider how pins can interact with other devices.

3. 3.

   What is the main function of GPIO pins?

   • To store data
   • To perform mathematical calculations
   • To interface with external devices

   Hint

   Think about the role GPIO plays in a microcontroller's functionality.

4. 4.

   True or False: GPIO pins can only be configured as inputs.

   • True
   • False

   Hint

   Recall the flexibility of GPIO pin configurations.

5. 5.

   Create a simple program that uses GPIO to read a button press and turn on an LED. Outline the steps and pseudocode.

   Hint

   Break the implementation into clear steps for ease of understanding.

6. 6.

   Discuss a scenario where GPIO interrupts could affect system performance. What strategies can mitigate this?

   Hint

   Consider how systems handle rapid input changes without errors.