TVZ Mechatronics Team


Zagreb University of Applied Sciences, Professional Study in Mechatronics

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Timers interrupts and tasks

Table of Contents

  1. Exercise 1: Using the mbed Timer
  2. Exercise 2: Using the mbed Timeout
  3. Exercise 3: Using the mbed Ticker
  4. Exercise 4: Using the mbed InterruptIn
  5. Exercise 5: Switch debouncing
  6. Exercise 6: Measuring distance with ultrasonic sensor HC-SR04

In the following exercises you will learn to use Timer, Timeout, Ticker and InterruptIn classes from the standard mbed library. The program codes are from the following excellent book: Toulson, R. & Wilmshurst, T. (2012). Fast and Effective Embedded Systems Design - Applying the ARM mbed, Newnes, Oxford, ISBN: 9780080977683.

Exercise 1: Using the mbed Timer

Examine the following code and try to figure out what will happen with the LEDs. Then test the program on an actual mbed and see if your predictions were correct.

#include "mbed.h"

Exercise 2: Using the mbed Timeout

Exercise 3: Using the mbed Ticker

Exercise 4: Using the mbed InterruptIn

Exercise 5: Switch debouncing

Exercise 6: Measuring distance with ultrasonic sensor HC-SR04

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