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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of the prescaler in a timer?
💡 Hint: Think about how we alter clock speeds.
Question 2
Easy
What does the Update Interrupt Flag (UIF) indicate?
💡 Hint: What do we check to know when a timer is done?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the role of the prescaler in an ARM timer?
- It starts the timer
- It divides the clock frequency
- It sets the update interval
💡 Hint: Consider how timer speeds are adjusted.
Question 2
True or False: Polling the UIF flag is necessary to know when the timer has finished counting.
- True
- False
💡 Hint: What are we waiting for to confirm the timer is done?
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If the system clock is set to 72 MHz and the prescaler is set to 7199, calculate the timer counter frequency. Then determine the ARR for a desired delay of 2 seconds.
💡 Hint: Use the formula for counter frequency based on the prescaler.
Question 2
Create a timer configuration for generating a 300 ms delay using a clock frequency of 84 MHz, and explain how you derived the prescaler and ARR values.
💡 Hint: Think about how you calculate counts required based on the timer frequency.
Challenge and get performance evaluation