Hi, Daniele Nicolodi wrote: > Hello. I'm testing Analogy on my x86 system with a NI 6251 ADC board (I > can test with other NI ADCs if it useful to someone). > > The lack of overview documentation is making my progress slow, but I > have a couple of acquisition routines working quite well.
Which documentation are talking about ? For me the docs are: - the Doxygen doc (Xenomai API -> modules -> Analogy API): http://www.xenomai.org/documentation/xenomai-2.5/html/api/index.html - the wiki pages in the section "Device Drivers': http://www.xenomai.org/index.php/Driver_documentation Are you talking about these ones. Where did you see TRI_WAKE_EOS was not supported ? > > So far I have discovered that the TRI_WAKE_EOS flags works quite ok on > my hardware, despite being indicates as unsupported in the > documentation. Messing with the drivers I also discovered that > a4l_mmap() is also working. There is just a bug to iron out (I can > provide more details on my hacking if someone is interested in helping > my track down the issue). > > At the moment I'm facing two problems: > > 1. I setup an asynchronous acquisition. I then use a loop to > a4l_sys_read() the acquired data. When the acquisition command is over, > as configured with the .stop_src and .stop_arg in the command data > structure, the a4l_sys_read() returns an ENOENT error. The comedi way of > signaling the acquisition command end is to return 0, as is done for > files to signal the end of file. I think this is an API deficiency but I > haven't looked at how much work is to fix it. I thought I fixed this bug a few weeks ago. I have to make a pull request. Author: Alexis Berlemont <alexis.berlem...@gmail.com> 2010-02-06 23:00:54 Committer: Alexis Berlemont <alexis.berlem...@gmail.com> 2010-02-06 23:55:11 Parent: 1e4f9f3524bfc8ad84f92dfba5cbfc7f07652e7f (analogy: add a4l_flush_sync()) Child: 527ed184265ba494c080af940b099bb537c0e9fe (analogy: reinitialize events flags before accepting commands) Branches: analogy, master, remotes/origin/analogy, remotes/xenomai-head/master Follows: v2.5.1 Precedes: analogy: read() and poll() return no more -ENOENT when acquisition is over > > 2. Looks like it is not possible to setup an endless acquisition. If I > set .stop_src = TRIG_NONE and .stop_arg = 0, the command submission goes > fine, but I obtain an ENOENT error at the first a4l_sys_read(). I have > no idea on where to look to track down this issue. I will have a look at that soon. > > Thanks. Cheers, Alexis. _______________________________________________ Xenomai-help mailing list Xenomai-help@gna.org https://mail.gna.org/listinfo/xenomai-help
