If you are working on an embedded system (microprocessor +operating system), and the system is very basic that it only calls the ISR that you write when a corresponding interrupt is generated, nothing else. In order to make your system work correctly, what do you need to do in your ISR? If you are working on an embedded system (microprocessor +operating system), and the system is very basic that it only calls the ISR that you write when a corresponding interrupt is generated, nothing else. In order to make your system work correctly, what do you need to do in your ISR