First, if you fully understand what I say next and you've already done
it, great. I just want to cover the bases and I'm still not completely
clear on what you've done. Keep in mind that there are serial ports on
both your desktop and the gumstix. If you can get a connection at any
time with the gumstix then go with it. You won't necessarily
use /dev/ttyS0 on your desktop. It's typical, but maybe you'll use
ttyS1,2, or 3. All depends on where the cable is plugged into the
desktop. Since you're getting a console, you should get bootup messages
of some sort. On powerup you should get garbage if nothing else. You may
try opening minicom (or kermit- my fav) on all your desktop serial ports
and then plugging the cable into the gumstix. You should get something
somewhere. Also, you should get character echo off of the gumstix, so
any characters you type should get sent back. If that isn't the case,
you could have a flow control problem, which could be software (unlikely
if you're following instructions) or hardware (the cable or board). I'd
also try kermit, just for the heck of it.
On Thu, 2007-04-26 at 10:31 +1000, Ruben Gonzalez wrote:
> I just received my netMMC pack and am trying to figure out if I'm
> doing something wrong or if I have a defective board.
> I connected the connex to netMMC and the console-st boards.
> I hooked it up to my ethernet and sshed - all fine. I then tried getting
> the serial port to work so I could reflash with a modified filesystem,
> but I get no response via serial.
> I'm running minicom and set it up as per the the instructions on
> http://docwiki.gumstix.org/Connecting_via_Serial_-_Linux using /dev/ttyS0.
> I tested this setup against a different serial device and it was happily
> connecting to the different device. I then connected the null modem
> cable between the console-st and my desktop and got nothing. So
> I pulled the power on the console-st and reconnected the power plug.
> - still no serial data, I pressed the space and return keys a few times
> and got nothing. I checked the board was still alive via ssh and it was.
> I tried the 2nd serial connecter on the console-st (the innermost one)
> and got exactly the same result - nothing.
> I pulled the power again, disconnected the netMMC board and tried
> again with just the connex and console-st on each of the serial connectors
> with no difference. Is there anything else I should try before returning
> the console-st?
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> gumstix-users mailing list