On Tuesday 22 June 2004 03:12pm, Mark Drummond wrote: > On June 22, 2004 02:51 pm, Marr wrote: > > Can you please confirm your adapter model number? I cannot find any > > reference to adapter model F5U409 on the Belkin site, but there are > > several references to 'F5U409' in a Google search, so I know it must have > > existed at some point. > > Definately an F5U409.
OK, good... (snip) > > What does this adapter look like? It sounds like it has a DB-9 connector > > like the F5U109 (http://catalog.belkin.com/ > > IWCatProductPage.process?Merchant_Id=&Product_Id=91042) but I'm curious > > what the differences are. > > Practically identical. Refer to the sites above. Yep -- I cannot distinguish any difference. > Is the 109 USB 1 or USB 2? The F5U109 is USB1. It seems that the F5U409 is USB1 as well (based on 'Spd=12' report in your attachment; I don't know if that's conclusive or not though). Hmmmm.... so it seems that the F5U109 and F5U409 are nearly identical. > > Therefore, could you please report the USB Vendor ID and Product ID ('cat > > / proc/bus/usb/devices') for this device? > > Attached. Aha! It turns out that the F5U409 reports the exact same Vendor/Product ID (and 'Rev=') as my F5U109: > P: Vendor=050d ProdID=0109 Rev= 1.02 > S: Manufacturer=Belkin USB PDA Adapter This means that the 'mct_u232' module should work fine for baud rate changes with the F5U409 too. Sorry for the false alarm, but I wanted to be sure. > > There's a bigger issue that concerns me as well, however. The F5U109 > > adapter and the Sitecom U232-P25 adapter, both of which use the > > 'mct_u232' module, use a coded baud rate instead of the conventional > > 'baud rate divisor'. In practical terms, this means that your F5U409 > > (again, assuming it uses a different Product ID than my F5U109) will > > (probably) _not_ change baud rate successfully using the 'mct_u232' > > driver. Can you confirm or deny this? If you can confirm, I'd like to > > further modify the 'mct_u232' module to properly accommodate your adapter > > with regard to baud rate changes. > > I'm not exactly sure what you mean. I've configured minicom to use 9600 > which is standard for Sun boxes. I have not tried any other rate. Well, it's a moot point since the F5U409 reports itself as 'F5U109', but if that weren't the case, and you tried to change the baud rate of the simulated RS-232 port via the F5U409 (e.g. to comply with some attached RS-232 device [like a GPS receiver] which was not configured for 9600 bps), it would probably have failed, resulting in no communication with your RS-232 device. Many thanks for confirming this info. It looks like no change to the 'mct_u232' driver is needed. I just need to update the 'usb.ids' file to reflect the fact that both Belkin devices report the same USB Product ID. I also want to update the 'Configure.help' file at some point to reflect the fact that both of our Belkin adapters work with the 'mct_u232' kernel module. Bill Marr ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
