How to auto setup a gadget?

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1

Hi,

How do I include the following in the system startup?

insmod g_file_storage.ko file=/dev/mmcblk0p1stall=0 removable=1

I have create a shell script to run the command and put a link to the shell script in /etc/rc5.d but I get an error:

“insmod: cannot insert ‘g_file_storage.ko’: Cannot allocate memory”

I need to set up the system to do the above, then auto launch another executable at boot with no login. How do I do that?

-Stevo

2

In angstrom you can edit /etc/default/usb-gadget*, the accompanying app will load it at boot.

regards

Koen

3

Hi Koen,

Thanks for the help. Is there any online docs you can point me to on how to setup the gadget stuff in /etc/default/usb-gadget*?

-Stevo

4

If you look a the file you'll see it only really takes 2 options: name and options, so in your case 'storage' and 'file=/dev/mmcblk0p1 stall=0 removable=1'. I didn't think that would warrant wasting bytes online on :slight_smile:

5

Hi Koen,

Thanks again for the help. I was not with the device at the time I wrote the last e-mail. Now I am.

I did not have the file you were referring to in that directory. I have created the file and these are the contents:

root@BeagleBoard:/# cat /etc/default/usb-gadget
USB_MODE="storage"
MODULE_OPTIONS="file=/dev/mmcblk0p1 stall=0 removable=1"

I currently have the kernel built to include the file storage gadget as built-in.

Upon boot, I'm getting the following error:

"g_file_storage gadget: no file given for LUN0"

What am I missing?

Thanks again for all your help!
-Stevo