Q:
Can we pass any parameter and return a value from the ISR?
belongs to collection: Embedded C interview questions and answers (2022)
Embedded C interview questions and answers (2022)
- What is the difference between C and embedded C?
- What is the volatile keyword?
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- What is the difference between the const and volatile qualifiers in C?
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- What are the common causes of segmentation fault in C?
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C programming
Answer:
An ISR returns nothing and not allow to pass any parameter. An ISR is called when a hardware or software event occurs, it is not called by the code, so that’s the reason no parameters are passed into an ISR.
In the above line, we have already read that the ISR is not called by the code, so there is no calling code to read the returned values of the ISR. It is the reason that an ISR is not returned any value.
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