Page 402 - ARM Based Microcontroller Projects Using MBED

388 15. Mbed RTOS PROJECTS

FIG. 15.21 RTOS Timer example.

15.12 EXERCISES

1. Explain what you understand from the term multitasking
2. Why is multitasking important in real-time systems?
3. Explain what a thread is?
4. Explain the advantages and disadvantages of the various scheduling algorithms
5. Three LEDs are connected to a Nucleo-F411RE development board. Write a program so the
LEDs flash in the following rate: LED1 every second, LED2 every 0.5s, LED3 every 100ms.
6. Explain what a mutex is and where it can be used
7. Explain the differences between a mutex and a semaphore
8. Explain where a mail can be used in a multitasking system