Does it make sense that I can no longer send a BREAK signal since I started using this laptop and the USB-to-Serial adapter?
* Marr <[EMAIL PROTECTED]> [June 22, 2004 04:27 pm]: > 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 -- we're outta control
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