12.3.4. Interrupt Handling Functions

Try these first

1. 1.

   What is the purpose of enabling an interrupt in an embedded system?

   Hint

   Think about how systems communicate with external devices.

2. 2.

   Define what a flag clearing function does.

   Hint

   Consider why a notification would need to be reset.

3. 3.

   What does the function uart_enable_interrupt() do?

   • Disables UART
   • Enables UART interrupt
   • Clears UART flag

   Hint

   Think about receiving data.

4. 4.

   True or False: Interrupt priority can be managed to ensure critical tasks are addressed first.

   • True
   • False

   Hint

   How would you handle multiple tasks effectively?

5. 5.

   A system has several peripherals that can raise interrupts. Describe a strategy for managing their priorities effectively.

   Hint

   Consider real-time requirements.

6. 6.

   Construct a brief code demonstrating enabling an interrupt, processing it, and clearing the interrupt flag.

   Hint

   What steps should follow after enabling the interrupt?