... port the system falls > > over WRT real time behavior. > > > > I'm just starting to ... -endpoint firmware and driver for to make a ISO-USB2Serial device. But I don ... 1KB buffer for incoming data? > > The device or the driver? driver. > > > I'm ...

linux-kernel - mark gross - Mar 26 2008 - 12:49

... serial port data > > > and do some processing in real time. One example of ... looked at > > > the RT'ness of USB2Serial + USB stack yet? I would like ... do. USB is not "deterministic", and these cheap usb to serial > > devices introduce a very big lag that ...

linux-kernel - Greg KH - Mar 26 2008 - 19:24

... port data > and do some processing in real time. One example ... getting rock solid RT delivery times > of the data +/- 30usec. While ... at > the RT'ness of USB2Serial + USB stack yet? I would ... buffer for incoming data? The device or the driver? > I'm ...

linux-kernel - Greg KH - Mar 26 2008 - 12:27

... port data > > and do some processing in real time. One example ... I have the RT code and the system prototyped using the ... at > > the RT'ness of USB2Serial + USB stack yet? I would ... buffer for incoming data? > > > The device or the driver? > > > > I'm ...

linux-kernel - Ming Lei - Apr 3 2008 - 10:26

... box running an RT > > > kernel and some RT user mode software ... port data > > > and do some processing in real time. One example ... at > > > the RT'ness of USB2Serial + USB stack yet? I would ... these cheap usb to serial > > devices introduce a very big lag ...

linux-kernel - Greg KH - Apr 3 2008 - 11:52

... box running an RT > > > kernel and some RT user mode software ... port data > > > and do some processing in real time. One example ... at > > > the RT'ness of USB2Serial + USB stack yet? I would ... these cheap usb to serial > > devices introduce a very big lag ...

linux-kernel - Peter Zijlstra - Apr 3 2008 - 10:45

... if I created my own isochronous > > > USB2Serial adapter and iso-usb-driver that I ... . Isochronous transfers have pretty strict > transfer-time guarantees. Why wouldn't this work? ... ago said it wasn't really "real-time" enough for their application ( ...

linux-kernel - Greg KH - Mar 27 2008 - 00:13

... if I created my own isochronous > > USB2Serial adapter and iso-usb-driver that I couldn ... doubt it as others have tried and failed in the past. I don't ... . Isochronous transfers have pretty strict transfer-time guarantees. Why wouldn't this work? One ...

linux-kernel - Alan Stern - Mar 26 2008 - 22:58

... its getting very hard to find real serial ports any more :( I ... across this the other day, and saved the URL since the ... getting very hard to find real PCI slots any more." :( It ... able to meet fairly chosen "real time" latency ceilings. The stack ...

linux-kernel - David Brownell - Mar 27 2008 - 15:48

... I happened across this the other day, and saved the URL since > the price was ... "It's getting very hard to find real PCI slots > any more." :( Well digi ( ... should be able to meet fairly chosen > "real time" latency ceilings. The stack probably needs ...

linux-kernel - Lennart Sorensen - Mar 27 2008 - 17:00

... Sorensen wrote: > > I happened across this the other day, and saved the URL since > > the price was relatively sane ... $15 vs ... > Yeah, I know.  "It's getting very hard to find real PCI slots > > any more."  :( > > Well digi (www.digi.com) makes some ...

linux-kernel - David Brownell - Mar 27 2008 - 17:08

... cards can run 460Kbps, which the $5 cards could not, and they have 64byte FIFOs, not 16, and are more efficient to ... we don't exactly do large volumes. Of course by the time the sales people add markup and all that they would cost at least what the digi ...

linux-kernel - Lennart Sorensen - Mar 28 2008 - 09:38

... a 1KB buffer for incoming data? Personally, RT or not, I really like to avoid using those PL230X parts. They're everywhere, this is true, but also quite horrible sometimes. Jon. -- To unsubscribe from this list: send the line "unsubscribe ...

linux-kernel - Jon Masters - Apr 3 2008 - 02:24