Gumstix 2

Connecting

Initial set up

There were quite a few things that had to be done to get the gumstix to work on the dgc3 machine. Here is a list of how I did it.

Visit gumstix wiki

On the gumstix wiki (a.k.a., waysmall), there is an order of how you do it. First, you connect via the serial interface, using minicom, and then you configure the device so that it communicates via the USB gadget. Once that is set up, you can use SSH, etc.

Setting up the serial interface

Notes from http://docwiki.gumstix.org/Connecting_via_Serial_-_Linux#Connecting_with_Minicom

• First, configure Minicom

• Under "Serial Port Setup" choose the following

• Hit [ESC] until you return to the main configuration menu
• Select "Save Setup as dfl" to save the default setup
• Select "Exit from Minicom" to exit the program
• Connect the serial cable to the serial port on your computer and to the serial port on the Gumstix
• Run Minicom again with

This tells it to skip all the modem initialization strings, which are unnecessary when communicating with the Gumstix. You may need to do this as root if your normal login doesn't have permission to access the serial port.

• Plug the power adapter into the power jack of the Gumstix. When connected and powered, you should see a message from U-Boot followed by the normal Gumstix boot sequence in the minicom window.
• Log in for the first time with username root and password gumstix

Using Serial interface to allow TCP/IP connectivity

Notes from http://docwiki.gumstix.org/Setting_up_USBnet

Since the dgc3 computer is fairly new, it has all the kernel modules we needed. Thus, we just had to type

Since we want this to work again, we go ahead and add this module to the bootup script. dgc3 is a Debian/Kubuntu machine, so our strategy for that is

Note that there's no substitute for becoming root to concat this to the end of the file, unless you sudo to add the content to the end. Your choice.

Next, we will test to ensure that the connection is really there.

Setting the IP address

OK, so, now we have a usb connection between the two machines, but how to keep this automatic and real? Well, first we preserve this IP address, since we are not running a dhcpd server on dgc3.

Now, we make it easy to know who our 'host' is.

Meanwhile, back on the host computer,