Working with GPIOs
I'd like to be able to read and write to and from GPIO ports. Now i'm a little confused because i'm not sure if I still have to install some kind of framework (or recompile the kernel) or if i'm just tackling the problem the wrong way.
Now i've got a little program which should read and set a value but when it runs it returns the Message: "Cannot open direction file". I guess its a reference to the file in the GPIO export folder. (Program can be found in the attachment)
on a iEi Wafer-PV-D5252
Does anybody have an idea how i can get this to work?
Last edited by Jaery; December 20th, 2012 at 11:30 AM.
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