From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.71) id 1V3RaG-00059z-80 for mharc-grub-devel@gnu.org; Sun, 28 Jul 2013 10:04:28 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44232) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V3Ra9-00056j-Ni for grub-devel@gnu.org; Sun, 28 Jul 2013 10:04:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V3Ra4-0001qL-V9 for grub-devel@gnu.org; Sun, 28 Jul 2013 10:04:21 -0400 Received: from smtp.volny.cz ([2001:4de8:71c:62::33]:34810) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V3Ra4-0001q3-LB for grub-devel@gnu.org; Sun, 28 Jul 2013 10:04:16 -0400 Received: from [192.168.6.11] (unknown [193.86.90.90]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: starous@volny.cz) by smtp.volny.cz (Postfix) with ESMTPSA id D2571260A91 for ; Sun, 28 Jul 2013 16:04:14 +0200 (CEST) Message-ID: <51F524DE.4040903@volny.cz> Date: Sun, 28 Jul 2013 16:04:14 +0200 From: =?windows-1252?Q?Ale=9A_Nesrsta?= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: The development of GNU GRUB Subject: Re: [grub-devel] loongson-2f mini-pc (fuloong) elf image generation. References: <1351547244.2511.11.camel@king.jenpiliny.cz> <1351628069.2535.33.camel@king.jenpiliny.cz> <51E00C7F.6080700@gmail.com> <51E45E19.6080401@volny.cz> <51E59E32.4080608@volny.cz> <51E59EFE.6080301@volny.cz> <51E81366.10804@volny.cz> <51EB078D.3070303@volny.cz> <51EBFE3F.2020509@volny.cz> <754db81ef5b348866aa9285809d3889d@mail.volny.cz> <51F2960A.6030805@volny.cz> <51F2AE5E.5070700@gmail.com> <51F522F1.1030507@volny.cz> In-Reply-To: <51F522F1.1030507@volny.cz> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4de8:71c:62::33 X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: The development of GNU GRUB List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Jul 2013 14:04:26 -0000 > >>>> ... >>>> Hmm, I can access one laptop with 9 pins RS-232 port. The mini-pc is >>>> a 3 pins serial port. I don't currently have a way to connect them. >>>> >>>> I'll have to buy a some cable/converter... >>>> >>> Cable is shipped with fuloong. It's straight passive cable to RS-232. >> >> Thanks for that... I just found it (took me a while, since I totally >> forgot about it)... >> >> I still need to buy a male to female adapter, and/or a serial to usb >> converter. The laptop has a male port, and the lemote cable has a >> RS-232 male port also, :-( Perhaps those are easier to find... > > It is usually possible to buy/rent/borrow serial null-modem cable - it > should have female CANON 9-pin connector on both sides. > (Don't mix up null-modem and pass-through cable! Pass-through cable will > not damage Your computer(s), but it will not work in our case... > Pass-through cables were used to connect PC with telephone modems. For > debugging, i.e. to connecting two PCs peer to peer via serial line, it > is necessary null-modem cable which have "crossed" some signals, at > least RxD with TxD.) > > Or You can buy two female CANON 9-pin connectors and connect together > these pins: > > 1-st side 2-nd side > ------------------- > 2 - 3 > 3 - 2 > 5 - 5 > (i.e., You need only three wires) > > You can find many other wire-diagrams of null-modem cable with more > complex wiring on the Internet - You can use most of them, of course - > but the three connections, which I wrote above, should be enough - > because another signals should be not used in serial debugging case. > > If You are not friend of soldering gun, You can also use part of flat > ribbon cable and related clamping connector e.g. like this: > http://www.conrad.com/ce/en/product/711357/Assmann-WSW-A-DSF-09-LPIIIZ-D-SUB-For-Ribbon-Cable-Number-of-pins-9-Plug-Cable-Mount-Cutting-clamping-technology Sorry, the link is wrong - it links to MALE connector and You need FEMALE connectors. Correct link is e.g.: http://www.conrad.com/ce/en/product/711373/Assmann-WSW-A-DFF-09LPIIIZ-D-SUB-Pin-Connector-For-Ribbon-Cable-Number-of-pins-9-Socket-Cable-Mount-Cutting-clamping But in any case it was just example what You can use... One more example - complete null-modem cable: http://www.conrad.com/ce/en/product/979970/Null-modem-cable-9-pin-socketsocket > BR, > Ales > >> >> Thanks, >> > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel >