#Arduino wire library interrupt code
When the event or interrupt happens, the processor takes immediate notice, saves its execution state, runs a small chunk of code (often called the interrupt handler or interrupt service routine ), and then returns back to whatever it was doing before. Hardware Interrupts - These occur in response to an external event, like a pin going high or low.
#Arduino wire library interrupt software
Software Interrupts - These occur in response to a software instruction.
Hardware Interrupts - These occur in response to an external event, like a pin going high or low.There are software and Hardware interrupts : So what makes a sudden opening of air bag in seconds? An interrupt signal is used here which has the highest priority of all. But suddenly an accident happened ! At that time controller stops all the works and go to airbag activation section. Ĭonsider a case, while a car is running, Micro-controller is busy sensing speed of the car, checking other sensors, controlling air conditioner temperature etc. In I/O devices one of the bus control lines is dedicated for this purpose and is called the Interrupt Service Routine (ISR). It alerts the processor to a high priority process requiring interruption of the current working process. Interrupt is a signal emitted by hardware or software when a process or an event needs immediate attention.
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