Re: [Xenomai-help] Analogy vs Comedi

[Alexis Berlemont <berlemont.hauw@domain.hid>]

Hi,

Jaryn Sepesi wrote:
> Hi everyone!
> 
> I'm designing a real-time system based on Xenomai and NI 6259 DAQ board. 
> Analogy contains a driver for my card, but there is one little problem. 
> I have some experience using this card with normal non-RT linux + 
> Comedi, so I know It needs to be calibrated via tools like 
> comedi_soft_calibrate. I didn't find any suitable equivalent of this 
> tool in Xenomai documentation.
You are right. This tool has not yet been developed.

> 
> My question is - Is it possible to use Comedi tools (like mentioned 
> comedi_soft_calibrate) together with analogy driver? 
I am afraid you can't. But this task is planned (among many others). I
am still struggling with some other tasks but I could start it quite soon.

And if not, can I
> use comedi driver combined with Xenomai? I mean for RT applications. 
> (Yes, I know this is definitely not a clean approach, but still better 
> than use different RTOS)
Your real-time task will be able to use the comedi driver. However, I
think you already have in mind that your task will leave the primary
domain. You will be in charge to make it switch back.

Anyway, a smooth transition from comedi to analogy should be easy, once
the calibration feature will be available. Thus, you will get a better
determinism for your whole application.

> 
> Thank you very much!
> 
> BR,
> Jaryn Sepesi
> 

Alexis.

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