[Gumstix-users] USB port trouble

[DylanB <dbr...@un...>]

Hello,
I'm having trouble establishing a connection via serial. I don't have a
serial port on my laptop so I am using a USB to serial conversion. This (the
same cable) has worked for me in the past many times. Now when I try to
establist a connection via kermit I get the following:

dylan@dylan-laptop:~$ kermit -l /dev/USB0
can't open device

I have tried all of the ports on my laptop, both of the ubuntu versions I
have (8.04 and 9.04), and also a different cable that I connect my ipod to.
Nothing has worked. What I am most puzzled about is that I was working one
minute and then not the next. I was trying to establish a connection with my
IMU (microstrain 3dm-gx1) when the problem started. 
The sequence of events was as follows:

Cable diagram
laptop---USB------------RS232--------------4pins (Tx Rx V gnd)--IMU (battery
connected to IMU)

-IMU command recognises USB0 port and establishes connection.
-I get other errors that I think relate to a bent pin connecting into the
IMU.
-I correct the pin and reassemble
-IMU command gets virtually same errors
-I change the baud rate on the IMU
-Same errors
-I unplug the cable and try again and the port is no longer recognised
-No sign of ttyUSB* in /dev
-I have restarted a couple of times

I'm just listing everything that happened because I have no idea where the
error is.

Thanks.
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