- From: Luc Lefebvre <luc.lefebvre_at_mcgill.ca>
- Date: Mon, 2 Jun 2003 08:58:46 -0400 (EDT)
Hi Christoph, I am not certain about most of the questions that you raise. I am quite certain though that you can perform continuous data acquisition with comedi <as I mentioned, the mmap example, it works>. It may very well be that you can achieve most of what you want using mmap and <possibly> a realtime kernel <and comedi kernel modules>. In that respect, however, I have no experience. cheers On Sun, 1 Jun 2003, Christoph Hintermueller wrote: > Hi > >>> Luc Lefebvre <luc.lefebvre_at_mcgill.ca> 30.05.03 18.23 Uhr >>> > > > Have you looked at the mmap program in comedilib/demo? > > 1) Can the memmapping also be used in connection with dio especially the NI PCI 32HS board and driver? > 2) Is it possible to devide the streaming buffer into three independen Memmaps which contain consecutive Data?? Means one mmap contains data which has allready bben read and therefore is invalid. 1 is in state of beeinf filled by comedi and one beeing read by user process? > 3) is comedi capable of informing userapplication that an entire mmap is valid and can be read? In other word is comedy capable to send user application to sleeb until entire mmap which is awaited is filled with valid data again ? > > cu > Christoph > > > > _______________________________________________ > comedi mailing list > comedi_at_comedi.org > https://cvs.comedi.org/cgi-bin/mailman/listinfo/comedi > > -- Luc Lefebvre In the beginner's mind there are many possibilities, in the expert's mind there are few. <Shunryu Suzuki> Key fingerprint = D2E5 5E35 B910 6F4E 0242 EC63 0FD9 96D0 C7F4 784E
Received on 2003-06-02Z11:58:46