Date: Thu, 26 Aug 2021 18:48:28 +0200 From: Gerd Hafenbrack <gerd.hafenbrack@gmail.com> To: "Lizbeth Mutterhunt, Ph.D" <lizbethmutterhunt@gmail.com> Cc: freebsd-xen@freebsd.org Subject: Re: another xen-kernel UEFI story Message-ID: <a3da653d-52e5-cec7-acbc-d4ddfbeb7f17@gmail.com> In-Reply-To: <6DF76321-EBF1-403A-A9AE-971EA6A43C59@gmail.com> References: <3839452.BRNeRiNLvY@freebsd_current> <YRVQHmzo5c7Tq3Dn@Air-de-Roger> <9cf13949-3436-ce43-9884-d7a028c940fb@gmail.com> <2659512.iL6vRArjjl@freebsd_current> <f02a63b1-0b48-55ce-7f98-9486216e8ecf@gmail.com> <4DAB0DB2-E18D-4024-B80B-FCA2D2F51A45@gmail.com> <YR0jIDoP%2BFnCpatb@Air-de-Roger> <1907E411-6E75-4177-AD80-BB93D922DBAF@gmail.com> <YSCvY/FeyPezge2F@Air-de-Roger> <0B0D7949-1068-46EF-BD5D-F4D3433F51E0@gmail.com> <53d2fa19-0e7d-ba06-3761-59561c9df8ba@gmail.com> <6DF76321-EBF1-403A-A9AE-971EA6A43C59@gmail.com>
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The null modem cable can't be plugged on the mainboard directly. It will be plugged to the DB9 on the slot bracket of the adapter. There are 10 pins but 1 pin is a key pin so there are 9 pins left. Gerd On 2021-08-26 18:38, Lizbeth Mutterhunt, Ph.D wrote: > Ah! Logo! > > Bought it and waiting for it. Will make protocol if ready! > > Thx a lot, so it’s not to be plugged on the mainboard directly, we need an adapter between the 10 pin (not 9 as I thought, but with older my eyes leave their light more and more and listening has been always bad :-) ) > > Lizbeth > > >> Op 26 aug. 2021, om 17:33 heeft Gerd Hafenbrack <gerd.hafenbrack@gmail.com> het volgende geschreven: >> >> in your picture/foto you tried to put the null modem cable onto the mainboard? >> This won't work! >> You need something like this (no recommendation, just an example): >> https://smile.amazon.de/InLine-33208-DB9-10Pin-Interface-Gender-Adapter/dp/B000MAFOK4 <https://smile.amazon.de/InLine-33208-DB9-10Pin-Interface-Gender-Adapter/dp/B000MAFOK4>; >> The chain should look like this: >> mainboard -> DB9/RS-232-Adapter -> slot -> null modem cable -> USB-Adapter -> receiving USB port at laptop >> >> Gerd >> >> On 2021-08-21 17:48, Lizbeth Mutterhunt, Ph.D wrote: >>> Epilog: >>> ugen2.6: <Prolific Technology Inc. USB-Serial Controller> at usbus2, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA) >>> This is what it looks like on the receiving end at the moment. >>> Informed the forum how far we are… but the new null-cable works with the port: look at the foto… >>> Good for today, why does amazon not deliver faster?, but we can wait, can’t we, >>> lizbeth >>>> Op 21 aug. 2021, om 09:46 heeft Roger Pau Monné <royger@freebsd.org> het volgende geschreven: >>>> >>>> On Fri, Aug 20, 2021 at 06:41:57PM +0200, Lizbeth Mutterhunt, Ph.D wrote: >>>>> >>>>> >>>>>> Op 18 aug. 2021, om 17:11 heeft Roger Pau Monné <royger@freebsd.org> het volgende geschreven: >>>>>> >>>>>> On Wed, Aug 18, 2021 at 04:03:34PM +0200, Lizbeth Mutterhunt, Ph.D wrote: >>>>>>> Ok, the RS-232 cable arrived yestereday to connect it with my ASUS board shouldn’t be the problem, but how to connect on the other side of a 7 year old Dell Notebook with FreeBSD 14 CURRENT running? I guess I need a USB -> RS232 adapter there, or? And the Raspi would need something like this, too? >>>>>> >>>>>> Yes, that's what I use, a RS-232 to USB adapter. I've connected the >>>>>> adapter to either a laptop or a Raspberry Pi. As long as you have the >>>>>> drivers it doesn't really matter what you use on the other end. >>>>>> >>>>>> Keep in mind the cable between both boxes must be a null modem cable, >>>>>> or else it won't work. >>>>>> >>>>> I can’t connect it onboard, went with skalpell to the white plastic protection >>>> >>>> So you are not able to plug the serial header into the motherboard? >>>> Sorry, TBH it's not clear to me where you are stuck. >>>> >>>> Do you have the whole thing setup with all the cables properly >>>> connected and it's not working? >>>> >>>> How are you trying to connect to the serial console on the receive >>>> end? >>>> >>>>> But still no success even when force flag is on! Is this a sign, it is not a 0-modem-cable. >>>>> There are 9 pins, Clear to Send, Ready To Send, Clear to Receive, Ready to receive RX and DX (switching) and one stop bit and the brown earth pin. They appear on the board same way, but still they can’t connect. >>>>> >>>>> Buy another cable or another adapter? >>>> >>>> FWIW, I tend to use Startech adapters: >>>> >>>> https://www.amazon.de/StarTech-USB-Seriell-Adapterkabel-Schnittstellen/dp/B00GRP8EZU/ref=sr_1_4?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+usb+serial&qid=1629531611&s=computers&sr=1-4 <https://www.amazon.de/StarTech-USB-Seriell-Adapterkabel-Schnittstellen/dp/B00GRP8EZU/ref=sr_1_4?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+usb+serial&qid=1629531611&s=computers&sr=1-4>; <https://www.amazon.de/StarTech-USB-Seriell-Adapterkabel-Schnittstellen/dp/B00GRP8EZU/ref=sr_1_4?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+usb+serial&qid=1629531611&s=computers&sr=1-4 <https://www.amazon.de/StarTech-USB-Seriell-Adapterkabel-Schnittstellen/dp/B00GRP8EZU/ref=sr_1_4?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+usb+serial&qid=1629531611&s=computers&sr=1-4>>; >>>> >>>> And then you also need a null modem cable, like: >>>> >>>> https://www.amazon.de/StarTech-Null-Modem-Kabel-schwarz/dp/B00QM8ZP5E/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+nullmodem&qid=1629531635&s=computers&sr=1-3 <https://www.amazon.de/StarTech-Null-Modem-Kabel-schwarz/dp/B00QM8ZP5E/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+nullmodem&qid=1629531635&s=computers&sr=1-3>; <https://www.amazon.de/StarTech-Null-Modem-Kabel-schwarz/dp/B00QM8ZP5E/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+nullmodem&qid=1629531635&s=computers&sr=1-3 <https://www.amazon.de/StarTech-Null-Modem-Kabel-schwarz/dp/B00QM8ZP5E/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=startech+nullmodem&qid=1629531635&s=computers&sr=1-3>>; >>>> >>>> Sorry for the brand naming. I'm in no way affiliated to Startech, it's >>>> just that I find their products more reliable than others, and hence >>>> that's what I would recommend. >>>> >>>> Regards, Roger. > >
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