[Xenomai-help] can getstate

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* [Xenomai-help] can getstate
@ 2007-03-02 10:59 Stéphane ANCELOT
  2007-03-02 10:05 ` Jan Kiszka
  2007-03-02 10:44 ` Wolfgang Grandegger
  0 siblings, 2 replies; 4+ messages in thread
From: Stéphane ANCELOT @ 2007-03-02 10:59 UTC (permalink / raw)
  To: xenomai

Hi,
Can somebody provide me with a programming example on how to retrieve 
state using rt_dev_ioctl .

Best Regards
thanks
steph


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [Xenomai-help] can getstate
  2007-03-02 10:59 [Xenomai-help] can getstate Stéphane ANCELOT
@ 2007-03-02 10:05 ` Jan Kiszka
  2007-03-02 10:44 ` Wolfgang Grandegger
  1 sibling, 0 replies; 4+ messages in thread
From: Jan Kiszka @ 2007-03-02 10:05 UTC (permalink / raw)
  To: Stéphane ANCELOT; +Cc: xenomai

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Stéphane ANCELOT wrote:
> Hi,
> Can somebody provide me with a programming example on how to retrieve
> state using rt_dev_ioctl .

What state? The state of a CAN controller, ie. the following IOCTL?

http://www.rts.uni-hannover.de/xenomai/lxr/source/include/rtdm/rtcan.h?a=i386#824

Jan


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^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [Xenomai-help] can getstate
  2007-03-02 10:59 [Xenomai-help] can getstate Stéphane ANCELOT
  2007-03-02 10:05 ` Jan Kiszka
@ 2007-03-02 10:44 ` Wolfgang Grandegger
  2007-03-02 16:22   ` Stéphane ANCELOT
  1 sibling, 1 reply; 4+ messages in thread
From: Wolfgang Grandegger @ 2007-03-02 10:44 UTC (permalink / raw)
  To: Stéphane ANCELOT; +Cc: xenomai

Stéphane ANCELOT wrote:
> Hi,
> Can somebody provide me with a programming example on how to retrieve 
> state using rt_dev_ioctl .

The following (untested) code snippet should work:

     struct ifreq  ifr;
     can_state_t *pstate;
     ...
     pstate = (can_state_t *)&ifr.ifr_ifru;
     ret = rt_dev_ioctl(fd, SIOCGCANSTATE, &ifr);
     if (ret) {
	perror("rt_dev_ioctl");
	return;
     }
     printf("Current state = %d\n", *pstate);

RT-Socket-CAN allows a very flexible error handling. Please have a look 
to 
http://www.xenomai.org/documentation/trunk/html/api/group__rtcan.html#g451ba35aa4d0bef48cb7b0416f5b4367

Wolfgang,



^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [Xenomai-help] can getstate
  2007-03-02 10:44 ` Wolfgang Grandegger
@ 2007-03-02 16:22   ` Stéphane ANCELOT
  0 siblings, 0 replies; 4+ messages in thread
From: Stéphane ANCELOT @ 2007-03-02 16:22 UTC (permalink / raw)
  To: Wolfgang Grandegger; +Cc: xenomai

yes, it rocks, thanks
Wolfgang Grandegger wrote:
> Stéphane ANCELOT wrote:
>> Hi,
>> Can somebody provide me with a programming example on how to retrieve 
>> state using rt_dev_ioctl .
> 
> The following (untested) code snippet should work:
> 
>     struct ifreq  ifr;
>     can_state_t *pstate;
>     ...
>     pstate = (can_state_t *)&ifr.ifr_ifru;
>     ret = rt_dev_ioctl(fd, SIOCGCANSTATE, &ifr);
>     if (ret) {
>     perror("rt_dev_ioctl");
>     return;
>     }
>     printf("Current state = %d\n", *pstate);
> 
> RT-Socket-CAN allows a very flexible error handling. Please have a look 
> to 
> http://www.xenomai.org/documentation/trunk/html/api/group__rtcan.html#g451ba35aa4d0bef48cb7b0416f5b4367 
> 
> 
> Wolfgang,
> 
> 
> 



^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2007-03-02 16:22 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-03-02 10:59 [Xenomai-help] can getstate Stéphane ANCELOT
2007-03-02 10:05 ` Jan Kiszka
2007-03-02 10:44 ` Wolfgang Grandegger
2007-03-02 16:22   ` Stéphane ANCELOT

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