Re: RasPi GPIO driver

williamssimonp at williamssimonp at
Sun Oct 20 21:32:08 UTC 2013

I am testing one as we speak, if you’re interested.  Should be ready to submit the patch about mid-week.



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From: sarraciro
Sent: ‎Sunday‎, ‎20‎ ‎October‎ ‎2013 ‎22‎:‎28
To: rtems-users at

Hi all,
I'm trying to write a simple driver to use raspberry pi gpio.
I've found some examples for the POSIX approach (& I tried it with
success) but I'm more interesting to pure C solution.
I read the RTEMS's documentation but it's too general (for my
know-how) ... and  I've read the BCM2835 datasheet for register
addresses ...  I understood the relevance to use the pointers for access
to the memory...but I'm stucking until now I don't understand how to
move on...
Any suggestions or lectures for understand how to complete the task? 
thank you

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