Is anybody can show me a simple rtdm driver to read/write virtual memory device?

Pierre FICHEUX pierre.ficheux at smile.fr
Tue Apr 7 12:33:58 CEST 2020


Hi,

I wrote some RTDM examples for Pi 3 GPIO (based on BCM register access, not
GPIO kernel API).

May be it could help...

regards

Le lun. 6 avr. 2020 à 09:45, Jan Kiszka via Xenomai <xenomai at xenomai.org> a
écrit :

> On 06.04.20 09:22, 孙世龙 via Xenomai wrote:
> > Is anybody could show me a simple xenomai3 rtdm driver to read/write
> > virtual memory device?
> > A virtual memory device to:
> >      write "hello world" to memory device in real real time(It's
> appricate
> > if the write operation could wake up the read task which allready waited
> to
> > read)
> > read  the memory device in real time(It's appricate if the read operation
> > could wake up the write task which allready waited to write)
> >
>
> What do you mean with "virtual memory"?
>
> If you are looking for a pattern how a driver implements read/write
> callbacks, maybe study the serial drivers. They come closest to "simple".
>
> Jan
>
> --
> Siemens AG, Corporate Technology, CT RDA IOT SES-DE
> Corporate Competence Center Embedded Linux
>
>

-- 

Pierre FICHEUX -/- CTO Smile ECS, France -\- pierre.ficheux at smile.fr
                             http://www.smile.fr
                             https://smile.eu/fr/offres/embarque-iot
I would love to change the world, but they won't give me the source code


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