On 04/17/2013 10:59 PM, Michael Haberler wrote:
> Ross,
>
> any reason not to use just userland memory mapped port I/O like with this
> library: http://www.airspayce.com/mikem/bcm2835 ?
>
> that worked fine for me with a userland RT thread, no drivers needed
It is a bad idea to access GPIO registers in user-space via memory
mapped I/O: you will not get the mutual exclusion the kernel driver
gives you.
--
Gilles.
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