On Monday 03 June 2019 01:34:49 pm Chris Albertson wrote: > The best way to test serial ports under Linux (or any other OS) is to > make a loopback device. This is a fancy name for a short length of > wire that short the Rx and Tx pins. You should then be able to > read back every byte you send. It loopback fails then you know the > promlem is at your end and not the cable or the other computer. > > If the port is not even showing up in the /dev tree than I wonder if > the hardware is enabled. Raspberry Pis have much hardware disabled > by default so the drivers don't load and take up space. Many PC > have serial disabled in BIOS for the same reason. > Not that I am aware of Chris, this port is on the back of the mainboard, a decade old M2N-SLI Deluxe Asus board. And it works when booted to wheezy.
> On Mon, Jun 3, 2019 at 10:26 AM Gene Heskett <[email protected]> wrote: > > On Monday 03 June 2019 01:02:23 pm Greg Bernard wrote: > > > Have you thouht of using a USB to serial adapter? > > > https://www.amazon.com/TRENDnet-Converter-Installation-Universal-T > > >U-S9 /dp/B0007T27H8 > > > > Yes and no Greg. They are all db9's and this sniffer is db25. I > > have the fdti cables, but not a spare 9 to 25. > > > > I'm more concerned that this testing's java is way to new. > > > > > On Mon, Jun 3, 2019 at 11:43 AM Gene Heskett > > > <[email protected]> > > > > wrote: > > > > Greetings all; > > > > > > > > One of the things I occasionally do is run a couple programs to > > > > talkto a trs-80 computer running in the basement, which has 3 > > > > serial ports on it, and the one that works with drivewire is the > > > > bitbanger, running at about 155 kilobaud. drivewire is written > > > > in java and apparently the java is too new. > > > > > > > > So the next thing is to run minicom, and see if it will talk to > > > > a hardware serial port whose top speed is 9600 baud. I have one > > > > of those 232 line testers with a slew of colored leds, which are > > > > all on in one color or the other, but I can't get minicom to > > > > blink any of them. So I look next with lsmod, no serial module. > > > > > > > > Is there any other way I can make the db9 port on this mobo > > > > work? > > > > > > > > Thanks all; > > > > > > > > Cheers, Gene Heskett > > > > -- > > > > "There are four boxes to be used in defense of liberty: > > > > soap, ballot, jury, and ammo. Please use in that order." > > > > -Ed Howdershelt (Author) > > > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > > > > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > [email protected] > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > Cheers, Gene Heskett > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
