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! Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux ------------------------------------------------------------------------- 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
