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Forum Post: I/O Interface API

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Hello

I have a sample code for programming GPIO in Devkit8000. Anyway, I have a question.

How can I find some information about "DeviceType" and "Function" in "CTL_CODE" specially for my board "Devkit8000"?

for example this line of code:

 >> FILE_DEVICE_UNKNOWN 0x00000022

how can i know that "FILE_DEVICE_UNKNOWN" is the hex number "0x00000022" ?

best regards...


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