Re: [Xenomai-help] Linux Serial Does not work with CONFIG_XENO_OPT_PERVASIVE enabled

[Philippe Gerum <rpm@xenomai.org>]

On 03/20/2012 03:34 PM, Glen Wernersbach wrote:
> Working on the Strace.
>
> I don't have the /proc/xenomai/hal file??

/proc/ipipe/version then.

>
> Again. Nothing I am running is xeno. Its just a xeno patched kernel.
>

Ok, but you do have the Xenomai co-kernel enabled in your kernel build, 
and the interrupt pipeline is enabled as well, right?

>
>
>
> On 3/20/12 10:31 AM, "Philippe Gerum"<rpm@xenomai.org>  wrote:
>
>> On 03/20/2012 03:17 PM, Philippe Gerum wrote:
>>> On 03/20/2012 03:07 PM, Glen Wernersbach wrote:
>>>> I went through and disabled everything in xeno except
>>>> CONFIG_XENO_OPT_PERVASIVE, did not work. Take that option out and it
>>>> works.
>>>>
>>>> Take that option out at anytime it works.
>>>>
>>>> My program basic writes a few characters a serial port and then reads
>>>> them
>>>> back in from the same port. I have a loop back cable connected to the
>>>> port.
>>>>
>>>> It writes the data but waits forever to read them back in
>>>>
>>>>>  From my tests, it appears that the termois tcsetaddr settings is not
>>>>> getting
>>>> set when I call it when this option is on.
>>>
>>> Can you strace your app when it runs, please?
>>
>> The interrupt pipeline release number would help as well
>> (/proc/xenomai/hal).
>>
>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 3/20/12 9:57 AM, "Philippe Gerum"<rpm@xenomai.org>  wrote:
>>>>
>>>>> On 03/20/2012 02:48 PM, Glen Wernersbach wrote:
>>>>>> I don't think this is it directly.
>>>>>>
>>>>>> This program was made on the same kernel prior to patching it with
>>>>>> Xeno.
>>>>>>
>>>>>> It should still run like any other linux program.
>>>>>
>>>>> - what does "program not working" mean in your case? Any errno return we
>>>>> could interpret? Any strace output?
>>>>>
>>>>> - what if you disable CONFIG_XENO_OPT_SKIN_RTDM, leaving PERVASIVE on?
>>>>>
>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 3/20/12 9:44 AM, "Philippe Gerum"<rpm@xenomai.org>  wrote:
>>>>>>
>>>>>>> On 03/20/2012 02:28 PM, Glen Wernersbach wrote:
>>>>>>>> Hi All,
>>>>>>>>
>>>>>>>> I install Xenomai 2.6.0 on AT91SAM9G20 system and have found that
>>>>>>>> when
>>>>>>>> CONFIG_XENO_OPT_PERVASIVE is enabled my standard non real time linux
>>>>>>>> serial write then read serial program does not work.
>>>>>>>>
>>>>>>>> If I turn off CONFIG_XENO_OPT_PERVASIVE, my serial program does work.
>>>>>>>>
>>>>>>>> Any ideas why?????
>>>>>>>>
>>>>>>>
>>>>>>> A possible explanation would be that your application links with the
>>>>>>> Xenomai POSIX lib (libpthread_rt), albeit it should not.
>>>>>>>
>>>>>>> With pervasive support disabled, any routing from the overloaded POSIX
>>>>>>> I/O calls to the Xenomai kernel would then fail.
>>>>>>>
>>>>>>> If so, you should not link against the Xenomai libs if you need no -rt
>>>>>>> service, or prevent symbol wrapping only for the POSIX I/O calls by
>>>>>>> prefixing them by __real_* if you want Xenomai-enabled POSIX services
>>>>>>> except the I/O support.
>>>>>>>
>>>>>>> See http://xenomai.org/index.php/Porting_POSIX_applications_to_Xenomai
>>>>>>>
>>>>>>>>
>>>>>>>> Also, when you turn CONFIG_XENO_OPT_PERVASIVE you get this error:
>>>>>>>> CC kernel/xenomai/nucleus/synch.o
>>>>>>>> kernel/xenomai/nucleus/synch.c: In function 'xnsynch_release_thread':
>>>>>>>> kernel/xenomai/nucleus/synch.c:688:3: error: implicit declaration of
>>>>>>>> function 'xnthread_get_rescnt'
>>>>>>>> kernel/xenomai/nucleus/synch.c:689:4: error: implicit declaration of
>>>>>>>> function 'xnshadow_send_sig'
>>>>>>>>
>>>>>>>> I had to go in and make the code for that option befor it always
>>>>>>>> false.
>>>>>>>>
>>>>>>>
>>>>>>> http://git.xenomai.org/?p=xenomai-2.6.git;a=commit;h=41b4f9c0f4bdf06107a7
>>>>>>> 88b
>>>>>>>
>>>>>>> 76
>>>>>>> 2b5cf662b1d4108
>>>>>>>
>>>>>>>
>>>>>>>> Glen
>>>>>>>> --
>>>>>>>> Glen Wernersbach
>>>>>>>> President&  CTO
>>>>>>>>
>>>>>>>> Jetsoft Development Co.
>>>>>>>> 629 Old St Rt. 74 ­ Suite 210
>>>>>>>> Cincinnati, Oh 45244
>>>>>>>> Custom Programming Web Site: www.jetsoftdev.com
>>>>>>>> Retail Products Web Site: www.scanhelp.com
>>>>>>>> Phone: 513-528-6660
>>>>>>>> Fax: 513-528-3470
>>>>>>>> Cell 513-240-9929
>>>>>>>> ----
>>>>>>>> Partner for Software Technology
>>>>>>>> Jacobs Automation
>>>>>>>> 2365 Progress Drive
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>>>>>>>> ----
>>>>>>>> "Support Dyslexia Research"
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Xenomai-help mailing list
>>>>>>>> Xenomai-help@domain.hid
>>>>>>>> https://mail.gna.org/listinfo/xenomai-help
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>>
>>
>


-- 
Philippe.