Arduino Interrupt Techniques

What is an external interrupt in Arduino?

• An external interrupt in Arduino is a type of internal memory

• An external interrupt in Arduino is a type of sensor

• An external interrupt in Arduino is used for serial communication

• An external interrupt in Arduino is a feature that allows the Arduino to respond to an external event by interrupting the normal flow of the program and executing a specific function.

How many external interrupts can Arduino Uno handle?

• 2

• 8

• 6

• 4

Explain the concept of Pin Change Interrupts.

• Pin Change Interrupts are a feature in microcontrollers that trigger an interrupt when a pin changes from LOW to HIGH or HIGH to LOW.

• Pin Change Interrupts are used for audio processing in microcontrollers.

• Pin Change Interrupts are only triggered by changes from HIGH to LOW.

• Pin Change Interrupts are specific to digital pins and cannot be used with analog pins.

What is an Interrupt Service Routine (ISR) in Arduino?

• A command used to print text on the Arduino Serial Monitor.

• A function that is invoked when a specific interrupt condition occurs.

• A variable that stores the current time in milliseconds.

• A function that is executed when the Arduino board is turned on.

How is an ISR different from a regular function in Arduino?

• An ISR can be called from anywhere in the code, while a regular function has a specific calling point.

• An ISR can have multiple return values, while a regular function can only have one.

• An ISR can modify global variables directly, while a regular function requires passing variables as arguments.

• An ISR is triggered by specific events, while a regular function is called sequentially.

What is the purpose of attaching an ISR to an interrupt?

• To ignore external events or signals.

• To increase the complexity of the system.

• To delay the response to external events or signals.

• To respond quickly and efficiently to external events or signals.

Can multiple ISRs be attached to the same interrupt in Arduino?

• Sometimes

• No

• Yes

• Maybe

How can you disable interrupts in Arduino?

• Call the stopInterrupts() method

• Use the noInterrupts() function

• Use the disableInterrupts() function

• Set the interrupt flag to false

Explain the difference between polling and interrupts in Arduino.

• Polling is a passive method of communication, while interrupts are an active method.

• Polling involves actively checking the status of a device, while interrupts allow the device to notify the microcontroller when an event occurs.

• Interrupts involve continuously checking the status of a device, unlike polling.

• Polling is more efficient than interrupts in terms of response time.

What are the advantages of using interrupts in Arduino programming?

• Decreased responsiveness and efficiency in handling time-sensitive tasks.

• Increased complexity and difficulty in programming.

• Higher power consumption and resource usage.

• Improved responsiveness and efficiency in handling time-sensitive tasks.