On Tue, Jan 12, 2010 at 10:14 PM, Levi Pearson <[email protected]>wrote:
> Charles Curley <[email protected]> writes: > > > On Tue, 12 Jan 2010 19:16:26 -0700 > > Kenneth Burgener <[email protected]> wrote: > > > >> Hi, > >> > >> Has anyone successfully used a serial port expansion card with Linux > >> (specifically Red Hat)? What brand and model did you use? > >> > >> I was thinking something like this would work great, if it would be > >> correctly recognized by Linux: > >> > >> SIIG Four 16650 serial port I/O card with 4-port (DB9) > >> http://www.newegg.com/Product/Product.aspx?Item=N82E16815150141 > >> > > > > Linux should recognize that, as the AT hardware specified up to four > > 16650s. But I can't say from actual experience or reading the source. > > > > Something else to watch for: the actual 16650 had, if I recall > > correctly, an eight byte fifo for each direction. Later versions have > > larger fifos. The larger the fifo, the longer the chip can go between > > interrupts without loosing data. I don't know if your application will > > require the larger fifos, but it's something to keep in mind. > > I actually did the embedded software for a device that included a serial > concentrator, and it ran Linux. At the time, I had to hack the serial > driver to get it to use all of the 16650s available on our board, but I > think that later kernels may have made the hack unnecessary. I'm afraid > I don't remember for sure, as it's been a long time. > > But anyway, as long as the card presents itself as a bunch of 16650s, > you should be able to make it work with Linux with some amount of > work, hopefully not including hacking the serial driver. :) > > --Levi > > /* > PLUG: http://plug.org, #utah on irc.freenode.net > Unsubscribe: http://plug.org/mailman/options/plug > Don't fear the penguin. > */ > Depending on your budget you might just want to get a few of these: http://www.newegg.com/Product/Product.aspx?Item=N82E16812101118&cm_re=usb_to_serial-_-12-101-118-_-Product we have used quite a few of these in our datacenter with newer servers that don't natively have serial ports and they have worked great. /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
