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Altera_Forum
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11 years ago

How to return value(s) in NIOS interrupt (ISR) function?

In the reference the return value is void, but how about I want to allocate a new variable in ISR and access it later in the main function? Thanks!
Altera_Forum's avatar
Altera_Forum
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11 years ago

You'd need a memory allocator that is callable from an ISR.

Whether one exists depends on the operating system code you are running.

It is unlikely that the malloc() in the BSP library is callable from ISRs.

Maybe you can use a fixed size memory block as a software fifo.