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Altera_Forum's avatar
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
Icon for Honored Contributor rankHonored Contributor
11 years ago

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You can use global variable which can be accessed in any function as well as in ISR routine.

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However in my case, the variable is allocated dynamically, the size of the variable is unknown until ISR is triggered. Can I declare the global variable and then define its memory allocation later on?