How to measure interrupt latency in an embedded system?

To measure interrupt latency in an embedded system, you can follow these steps:

How to Measure Interrupt Latency in an Embedded System

1. Configure a high-priority interrupt to occur at a specific point in your embedded system code.
2. Trigger an external event that will cause the interrupt to occur.
3. Use a timer to record the timestamp when the external event occurs.
4. Inside the interrupt service routine, record another timestamp when the interrupt is acknowledged and processing begins.
5. Calculate the interrupt latency by subtracting the first timestamp from the second timestamp.

By following these steps, you can effectively measure interrupt latency in your embedded system and optimize the performance of your system accordingly.