Never use "sleep" functions or wait for other slow processes inside an interrupt.
In the world of embedded systems, real-time operating systems (RTOS), and driver development, handling hardware signals with speed and precision is everything. If you are digging into low-level firmware or specific legacy architectures, you have likely encountered the term . ivthandleinterrupt
In an automotive braking system, the time between a sensor "interrupt" and the software "handle" must be measured in microseconds. Never use "sleep" functions or wait for other
To understand the function, you have to understand the two components of its name: In an automotive braking system, the time between
The function determines which index in the Interrupt Vector Table corresponds to the signal. Is it a Disk I/O? A serial port data arrival? A system clock tick?
It sends a signal back to the hardware (often through an Interrupt Controller) saying, "Message received, you can stop signaling now."
Ensure your code can handle being interrupted by another interrupt if your architecture allows nested priorities. Conclusion