On Wed, May 14, 2008 at 5:17 PM, Gilles Chanteperdrix <[EMAIL PROTECTED]> wrote: > > On Wed, May 14, 2008 at 5:04 PM, Jan Kiszka <[EMAIL PROTECTED]> wrote: > > > > Karl Reichert wrote: > > > Jan Kiszka wrote: > > >> Karl Reichert wrote: > > >>> Hello, > > >>> > > >>> I have two stations running RTnet, one as a master and one as a > slave. I > > >> want > > >>> to measure the time, which a message, sent from master to slave, > takes. > > >> But, > > >>> I don't want the time of the transmission only, but the complete time > of > > >> all > > >>> software layers this data is processed through. > > >>> > > >>> _______________ _______________ > > >>> | A | | D > | > > >>> |______________| |______________| > > >>> | B | | C > | > > >>> |______________| |______________| > > >>> | RTnet (Master) | | RTnet (Slave) | > > >>> |______________| |______________| > > >>> | | > > >>> |______________| > > >>> > > >>> So, I create the data, that should be send, in Layer A (Master) and > send > > >> it > > >>> over RTnet to Layer D (Slave). > > >>> > > >>> I want to take the time when the data leaves A and when it arrives D > > >> with > > >>> rtdm_clock_read(). If I have the offset between master and slave, I > can > > >>> calculate the time it took to pass A, B, both RTnet stacks, C and D. > > >>> > > >>> As RTnet keeps track of the offset in it's stack, I want to use this > > >> value. Is > > >>> it possible via the API? I didn't found anything. Or do I have to > > >> manipulate > > >>> the stack to pass the offset to the higher layers (C and D)? > > >> If RTmac/TDMA is in use, you can obtain the clock offset via > > >> RTMAC_RTIOC_TIMEOFFSET from the RTDM device "TDMA<x>" (where "<x>" > > >> corresponds to "rteth<x>"). > > >> > > >> Jan > > >> > > > > > > When I try to compile my application (xenomai native skin, user task), > I get an error, saying rtdm_driver.h (which contains the prototype for > rtdm_clock_read()) is for kernel mode tasks only. > > > > So you are in userland, obviously... > > > > > > > > > > How can I get a timestamp in a xenomai native user task? Is there sth > equivalent to rtdm_clock_read()? Or do I have to write a kernel task? > > > > Nope, there is rt_timer_read & Co. for native user-mode applications. > > > > I was about to remark that everything can be found in the API docs - but > > it can't! Any volunteer to add the missing functions from native/timer.h > > to the docs? Maybe there is just something broken for doxygen. TIA! > > The problem is that __KERNEL__ is in the list of PREDEFINED macros, > and the comments in native/timer.h are in the !__KERNEL__ section.
Other headers do #if (defined(__KERNEL__) || defined(__XENO_SIM__)) && !defined(DOXYGEN_CPP) Maybe we should use the same construction in native/timer.h ? -- Gilles ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
