On 04/19/2013 11:44 AM, Paul wrote:
> On Thursday 18 April 2013, Gilles Chanteperdrix wrote:
>> On 04/18/2013 06:38 PM, Ross Williamson wrote:
>>> Is this a bad idea from a RTlinux point of view or a style point of
>>> view?
>>
>> It is a bad idea from a very general point of view. gpiolib does two
>> things: - it ensures that no two drivers try and request the same
>> gpio - if toggling a gpio state implies a read-modify-write
>> operation, it protects it with a spinlock, so that no two drivers can
>> interrupt each other and cause issues in the operation.
>
> - Code portability. As the underlying hardware evolves or you switch to
> a different board, your code requires little, if any modification.
Yes, and that too. And that my even be the most important reason if the
code being developed has to be maintained.
--
Gilles.
_______________________________________________
Xenomai mailing list
[email protected]
http://www.xenomai.org/mailman/listinfo/xenomai
