Methods to Reduce Interrupt Latency in Embedded Engineering

Interrupt latency is a critical factor in embedded systems that can impact system performance. Here are some effective methods to reduce interrupt latency:

1. Optimize Interrupt Handlers: Write efficient interrupt service routines (ISRs) that execute quickly and do not block other interrupts.
2. Priority Management: Assign priorities to interrupts based on their criticality. Higher priority interrupts should be serviced before lower priority interrupts.
3. Minimize Interrupt Nesting: Avoid nesting interrupts whenever possible to reduce the overall latency of the system.
4. Disable Interrupts Temporarily: In time-critical sections of code, temporarily disable interrupts to prevent unwanted interruptions.
5. Use Hardware Accelerators: Utilize hardware accelerators or peripheral devices to offload interrupt processing tasks from the main CPU.

By implementing these methods, embedded engineers can effectively reduce interrupt latency and improve the responsiveness of the system.