[Xenomai-help] HELP: Real-time Drivers

[Xenomai-help] HELP: Real-time Drivers

[Peter Warner]

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Dear Xenomai Users,

I want to develop the real-time driver for my UART(RS-232) can any one
please Suggest How can I develop it.
Can I get Example Code and what are the different API I need to use. What
are the Different Compilation and Linker flag I need to use.

Thanks a lot

regards
Peter

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Re: [Xenomai-help] HELP: Real-time Drivers

[Cagnulein]

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> On 13/10/2010 06:19, Peter Warner wrote:
> Dear Xenomai Users,
>
> I want to develop the real-time driver for my UART(RS-232) can any one
> please Suggest How can I develop it.
> Can I get Example Code and what are the different API I need to use.
> What are the Different Compilation and Linker flag I need to use.
Hi, you can see the example provided with xenomai under ksrc
<http://git.xenomai.org/?p=xenomai-2.5.git;a=tree;f=ksrc;hb=14c921b86a82debe367c782b33273f8ba470cf6e>
/ drivers
<http://git.xenomai.org/?p=xenomai-2.5.git;a=tree;f=ksrc/drivers;hb=14c921b86a82debe367c782b33273f8ba470cf6e>
/ serial
<http://git.xenomai.org/?p=xenomai-2.5.git;a=tree;f=ksrc/drivers/serial;hb=14c921b86a82debe367c782b33273f8ba470cf6e>
/ *(*
http://git.xenomai.org/?p=xenomai-2.5.git;a=tree;f=ksrc/drivers/serial;h=9cd6f200fdf45fc2550c95431a552d647df934f4;hb=14c921b86a82debe367c782b33273f8ba470cf6e
)
<http://git.xenomai.org/?p=xenomai-2.5.git;a=tree;f=ksrc/drivers/serial;h=9cd6f200fdf45fc2550c95431a552d647df934f4;hb=14c921b86a82debe367c782b33273f8ba470cf6e>.

Take a look to the wiki too ( http://xenomai.org/index.php/16550A ).

If you tell me which architecture you are using i could help you more
(if i know it).
Bye
<http://git.xenomai.org/?p=xenomai-2.5.git;a=tree;f=ksrc/drivers/serial;h=9cd6f200fdf45fc2550c95431a552d647df934f4;hb=14c921b86a82debe367c782b33273f8ba470cf6e>

>
> Thanks a lot
>
> regards
> Peter
>
>
> _______________________________________________
> Xenomai-help mailing list
> Xenomai-help@domain.hid
> https://mail.gna.org/listinfo/xenomai-help


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Re: [Xenomai-help] HELP: Real-time Drivers

[Gilles Chanteperdrix]

Peter Warner wrote:
> Dear Xenomai Users,
> 
> I want to develop the real-time driver for my UART(RS-232) can any one
> please Suggest How can I develop it.
> Can I get Example Code and what are the different API I need to use.

Hi Peter,

the API used to write drivers is the RTDM API, you will find an overview
of this API here:

http://www.xenomai.org/documentation/branches/v2.3.x/pdf/RTDM-and-Applications.pdf

And its documentation here:
http://www.xenomai.org/documentation/xenomai-2.5/html/api/group__rtdm.html

A serial driver would be an RDM driver implementing the "Serial devices"
profile.

An example of such driver is the driver for the 16550A driver in Xenomai
sources.

> What are the Different Compilation and Linker flag I need to use.

A driver is implemented in kernel-space, so, you do not care about these
details, you just use the Linux kernel build system to compile the
driver module. You can look at the 16550A driver Makefile.

-- 
                                                                Gilles.

Re: [Xenomai-help] HELP: Real-time Drivers

[Gilles Chanteperdrix]

Peter Warner wrote:
> Hi Gilles,
> 
> Thanks for your mail,
> 
> I will just give the detail of my system:
> Processor Core 2 Duo.
> Operating System: Ubuntu 10.04
> Kernel version: 2.6.32.20
> xenomai Version: 2.5.5.1
> 
> Now I will Explain What I Did.
> 
> In  the Kernel Configuration(make menuconfig)
> 
>  Real-time sub-system  --->
>     DRIVERS ---->
>          SERIAL DRIVERS ------>
>          <M> 16550A UART driver
>           HARDWARE ACCESS MODE(PORT-based I/O) ------->
> 
> I build the kernel and installed the xenomai patched kernel.
> the Include path is /usr/include/xenomai/

You should have installed the kernel modules too...

> Later I entered into the directory xenomai-2.5.5.1/examples.
> Invoked the command make.
> next to folder native and invoked the generated executables they all are
> working fine
> 
> next i entered to folder
> 
> /usr/src/xenomai-2.5.5.1/examples/rtdm/profiles/serial     and invoked
> make. finally  the executable *cross-link* was generated.
> 
> When I invoke the *cross-link* it ihas given the following error message:
>                      *main : can't open rtser0 (write), No such device*
> 
> I guess the corresponding device driver I need to install. How can I do
> the same.

If the device driver is compiled as a module, you need to load the
module, yes.

> on the Other hand i have done one more Operation
> 
> I used /usr/src/xenomai-2.5.5.1/ksrc/drivers/serial  and Tried to invoke
> the make but it has  given the following error message;
> Makefile:25: /Rules.make: No such file or directory
> make: *** No rule to make target `/Rules.make'.  Stop.
> 
> I just want to clarify from you that is it a driver module. How can I
> fix this bug.

No bug here. At least not in Xenomai code. The question you ask is about
Linux kernel modules. I am sorry, but you are on the Xenomai mailing
list here, we will help you solve issues with Xenomai, but we do not
have the bandwidth to teach you how to compile and use Linux and Linux
kernel modules. There are a lot of ressources on the web which will
teach you that anyway.

-- 
                                                                Gilles.