From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4AE7EA79.5070904@domain.hid> Date: Tue, 27 Oct 2009 23:53:45 -0700 From: Jonas Buchli MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Xenomai-help] analog output device with comedi/analogy List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org Dear all, we are trying to get a National Instruments DA/AD card (NI PCIe 6259, see link below) working with comedi/analogy. The drivers seem to be doing something, I can pull up the analog outputs to 10V (max voltage) using the example program cmd_write. So I think the issues I am having are stemming from not understanding and using the API correctly rather than driver issues (but I might be wrong). Thus, I am trying to understand how to actually write a waveform to the analog output and am so far not very successful and the comedi doc seems a bit cryptic and scarce to me in this respect. - Does anyone have example code how this is done? - Is the correct procedure to issue first a command (comedi_snd_command) and then use the write command (comedi_sys_write) to achieve this? - Interestingly the write command (comedy_sys_write) is not the one responsible for pulling up the output, it seems to already happen in the comedi_snd_command. - My current approach was trying to modify the cmd_write example. Is this a good idea? Any help and pointers would be greatly appreciated! Thanks a lot and best regards Jonas PS: Card being used NI PCIe 6259: http://sine.ni.com/nips/cds/view/p/lang/en/nid/14128