Re: [Gumstix-users] Gumstix connection with USB

[Dave H. <dhy...@gm...>]

Hi Tarani,

> After compiling the Buildroot successfully with default configurations, we
> tried to connect the mother board and usb board with our host
>
> Linux pc with usb cable.But we could not communicate using this
> connection.We execute the following command:

Why did you execute the following commands?

> cd <gumstix-buildroot>
> cd build_arm_nofpu
> cd linux-<the version of linux you're using>
> make ARCH=arm CROSS_COMPILE=`pwd`/../staging_dir/bin/arm-linux- menuconfig

Obviously, because you were running menuconfig you were trying to
change something. What did you change? What were you trying to
accomplish.

> make ARCH=arm
> CROSS_COMPILE=`pwd`/../staging_dir/bin/arm-linux- ( we got
> the following error : arm-linux-gcc NOT FOUND, no such file or directory)

The fact that you got an error suggests that either your initial
buildroot was unsuccessful or you mistyped something. You should be
able to do:

ls `pwd`/../staging_dir/bin/arm-linux-*

and see arm-linux-gcc. If not, then your compiler wasn't built
successfully. Running make with no targets is also not required. You'd
be better off to just skip this step and let the main make take care
of it.

> cd <gumstix-builtroot>
> make

Why did you proceed even though you got errors at an earlier step?

> We are not using any external power( 4v adapter) assuming USB is going to
> take the required power from the host pc.

That will work for particular board combinations. Not all USB
daughtercards support USB power, and you can' get enough power from
USB to driver all types of daughtercards.

-- 
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/