11.3.1. GPIO (General Purpose Input/Output)

Try these first

1. 1.

   What does GPIO stand for?

   Hint

   Think about what function GPIO serves.

2. 2.

   What is the command to set pin 5 as output?

   Hint

   Recall the register used for setting pin modes.

3. 3.

   What does the GPIO stand for?

   • General Purpose Input/Output
   • General Purpose Interface/Output
   • General Integration Output/Input

   Hint

   Focus on the function of the pins.

4. 4.

   True or False: The ODR register is used to read input states from GPIO pins.

   • True
   • False

   Hint

   Think about the purpose of each register.

5. 5.

   You have a system where you want to use GPIO pin 5 to both read a sensor's state and control an LED when the sensor is activated. Write the initialization and use cases in code.

   Hint

   Ensure you separate the configurations clearly for input and output.

6. 6.

   Explain why understanding the differences between the MODER and ODR registers is critical when designing an embedded application.

   Hint

   Reflect on how issuing commands without understanding the registers could affect your project.