10.7. Writing a Simple Program for SoC

Try these first

1. 1.

   What does GPIO stand for?

   Hint

   Think about what type of signals these pins manage.

2. 2.

   What is the main purpose of a timer in embedded systems?

   Hint

   Recall the blinking LED example.

3. 3.

   What is the purpose of a timer interrupt?

   • To initialize GPIO pins
   • To generate periodic signals
   • To reset the microcontroller

   Hint

   Think about the blinking LED example.

4. 4.

   True or False: An ISR can perform extensive operations without impact.

   • True
   • False

   Hint

   Remember the efficiency needed in handling ISRs.

5. 5.

   Modify the provided LED blink program to create a feature that allows adjusting the blink rate through user input. Include the necessary code changes.

   Hint

   Look at how you initialize the timer and consider using different timer intervals based on user input.

6. 6.

   Create an ISR to manage two different GPIO pins connected to two different LEDs, toggling each LED at staggered intervals (e.g., LED1 every second, LED2 every half second).

   Hint

   Don’t forget to structure your toggle logic clearly to prevent both LEDs from switching together.