9.8.2. Interrupt Priority Masking

Try these first

1. 1.

   What does Interrupt Priority Masking achieve?

   Hint

   Think about urgent tasks.

2. 2.

   Define what an ISR is.

   Hint

   Consider what happens when an interrupt occurs.

3. 3.

   What is the main benefit of Interrupt Priority Masking?

   • It improves power consumption.
   • It enhances system responsiveness.
   • It allows for longer ISR execution.

   Hint

   Consider why some tasks are more important than others.

4. 4.

   True or False: Lower-priority interrupts can always execute during a high-priority ISR.

   • True
   • False

   Hint

   Think about what happens when urgent tasks come in.

5. 5.

   Evaluate a scenario in an embedded device where various sensors generate interrupts. How would you design the interrupt handling with prioritization and masking?

   Hint

   Think about the consequences of failed responses.

6. 6.

   Create a flowchart to illustrate the state transitions during nested interrupts with priority masking.

   Hint

   Use standard symbols to depict processes clearly.