Table of Contents
What is the problem in interrupt nesting method?
The mechanism by which one interrupt preempts another is called nesting. The handling of nested interrupts can be unpredict- able. Other issues can arise, such as a variable amount of delay prior to servicing a low-priority interrupt, or a higher program stack size requirement.
Which one of the following errors will be handling by the operating system?
Discussion Forum
| Que. | Which one of the following error will be handle by the operating system? |
|---|---|
| b. | lack of paper in printer |
| c. | connection failure in the network |
| d. | all of the mentioned |
| Answer:all of the mentioned |
How do interinterrupts work on a microcontroller?
Interrupts on a microcontroller work just like the example with sleeping and the alarm clock I discussed earlier. You can write a program that configures a peripheral to watch for a certain event and interrupt the CPU when that event occurs—for example, when the GPIO input value goes from 0 to 1.
What is an ISR in microcontrollers?
All microcontroller development tools have a specific way for you to tell the C compiler that a certain function is an ISR and which specific interrupt it is associated with. Once you have done this properly, when the specific interrupt occurs, the CPU will automatically jump to that function and execute it.
Does the ISR automatically clear the interrupt request that triggered it?
It will also, in most cases, automatically clear the interrupt request that triggered the ISR entry, so that a single interrupt request does not result in the ISR being entered multiple times. Occasionally, depending on interrupt type and microcontroller design, it will require user code in the ISR to explicitly clear the interrupt request.
What is the difference between disarming and interrupting a device?
Conversely, to disarm a device means to shut off or disconnect the hardware trigger from the interrupts. Each potential interrupting trigger has a separate arm bit. One arms a trigger if one is interested in interrupts from this source. Conversely, one disarms a trigger if one is not interested in interrupts from this source.