22 lines
842 B
Markdown
22 lines
842 B
Markdown
Hooks can be defined per supported platform to allow for highly custom operations if needed.
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This feature of MRAA should only be used by developers defining the board definitions, NOT an end user.
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##Types of Hooks
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###REPLACE
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Defining a replace function will entirely replace the associate function. This should only be done if your new function can handle everything the mraa function would normally.
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###PRE
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Any functionality defined here will be performed when the main function is called.
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###POST
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Any functionality perfomed here is done just before the normal function returns. All post functions will have passed into them the return value that would normally be returned.
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##Hooks
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### GPIO
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* init (pre-post) - On RAW functions
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* mode (replace-pre-post)
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* dir (replace-pre-post)
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* write (pre-post)
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* use-mmaped (replace-pre-post)
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