Regarding the USB target, I also know of this project http://www.linux-usb-daq.co.uk/ which may be helpful. It's a USB data acquisition board which works with the COMEDI drivers. Everything is open and you may find something helpful there. On 10/26/11, Folderol <folderol@xxxxxxxxx> wrote: > On Wed, 26 Oct 2011 11:23:53 -0500 > Charles Henry <czhenry@xxxxxxxxx> wrote: > >> On Wed, Oct 26, 2011 at 11:01 AM, Christoph Kuhr <christoph.kuhr@xxxxxx> >> wrote: >> > >> >> I'm unfamiliar with AV bridging--what do you use it for? >> > >> > AVB is a !!! layer2 !!! ethernet standard for audio and video transport, >> > with precise timing synchronization (house clock like with grandmaster >> > clock >> > selection), resource reservation and quality of service. >> > worstcase latency over 7hops: 2ms >> > needs fast eth at least. >> >> OK, that's a very good standard. Then, it's also addressable, so you >> could have multiple audio devices on the same network. It should also >> be good for designing large PA systems (over whole buildings, concert >> halls, arenas, etc...) using standard networking. >> >> > the pro audio industry is presenting first products soon, meyersound >> > already >> > has it in use in its dmitri. >> > harman pro (studer, soundcraft, bss, jbl,...), yamaha will support it, >> > biamp, focusrite, audinate, and many many more... >> > >> > this compatibility would make such an open interface much more >> > interesting, >> > i think. >> >> Where does the implementation belong? It ought to factor into >> designing kernel modules + hardware (eth) + fpga code. >> >> >> While the FPGA's themselves aren't prohibitively expensive, the rapid >> >> development boards+software are. >> > >> > i have a low budget board from xilinx (200$), but will soon switch to >> > altera, because the are cheaper boards available (60€)... >> > >> > bye >> > Ck >> >> I have a Basys2 Xilinix board to get started on. It's decently priced >> and has an I2C DAC module (20$ extra) for me to play with, plus some >> breadboards for trying out other IC's. At my university, I can take >> an FPGA course next spring also. Seems like it's still a long road >> ahead before having anything interesting programmed. >> >> I'd also be interested in other manufacturers--the big issue for me is >> figuring out which programming interface works best (on Linux >> preferrably!!!). The Xilinx ISE 13.2 needed a little debugging of >> shell scripts, so far. > > > Wasn't this very much like what was discussed about a year ago? > > There is this: > http://www.xmos.com/avbl2 > > The code for this reference design is royalty free, and lots of detail is > available. With all the documentation and code available, surely it would be > possible to make a linux equivalent to an endpoint. > > These are BGA devices so not suitable for D.I.Y. builds, but I wonder how > much a > small production run would be for a board with just the power, Ethernet and > I2S > headers. > > -- > Will J Godfrey > http://www.musically.me.uk > Say you have a poem and I have a tune. > Exchange them and we can both have a poem, a tune, and a song. > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/listinfo/linux-audio-user > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
