Using the Neo as an USB Mass storage device

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(Make the Neo FreeRunner act as a mass storage device)
Line 7: Line 7:
 
  umount /media/card
 
  umount /media/card
 
  rmmod g_ether
 
  rmmod g_ether
  modprobe g_file_storage file=/dev/mmcblk0p1
+
  modprobe g_file_storage file=/dev/mmcblk0 stall=0
Reference: [http://lists.openmoko.org/pipermail/community/2008-September/029261.html Petr Vanek's "usb mass media storage" message on the community mailing list]
+
Reference: [http://lists.openmoko.org/pipermail/community/2008-September/029261.html Petr Vanek's "usb mass media storage" message on the community mailing list], updated by [[User:Mmontour|Mmontour]] 16:25, 21 March 2009 (UTC). The "stall=0" parameter is required on at least some systems to prevent timeouts and errors.
  
 
The card is not accessible from the Freerunner in this mode.
 
The card is not accessible from the Freerunner in this mode.

Revision as of 17:25, 21 March 2009

Make the Neo FreeRunner act as a mass storage device

To access the microSD card in the Freerunner from the host computer as if it were a USB key or memory stick, the following script can be used:

#!/bin/sh
ifdown usb0
umount /media/card
rmmod g_ether
modprobe g_file_storage file=/dev/mmcblk0 stall=0

Reference: Petr Vanek's "usb mass media storage" message on the community mailing list, updated by Mmontour 16:25, 21 March 2009 (UTC). The "stall=0" parameter is required on at least some systems to prevent timeouts and errors.

The card is not accessible from the Freerunner in this mode.

Make the Neo FreeRunner revert to USB networking

The following script can be used:

#!/bin/sh
rmmod g_file_storage
mount /dev/mmcblk0p1 /media/card
modprobe g_ether
ifup usb0

Be sure to properly unmount on the host computer first, just as you would with any other USB storage.

Is it possible to pretend to be a USB hub, providing both g_ether and g_file_storage?

Not yet. At the moment it's one gadget driver at a time, but there is a project under way to allow use of multiple gadget drivers together. See this blog posting called 'USB Composite Gadget Framework' or Linux-USB Gadget API Framework

Personal tools

Make the Neo FreeRunner act as a mass storage device

To access the microSD card in the Freerunner from the host computer as if it were a USB key or memory stick, the following script can be used:

#!/bin/sh
ifdown usb0
umount /media/card
rmmod g_ether
modprobe g_file_storage file=/dev/mmcblk0 stall=0

Reference: Petr Vanek's "usb mass media storage" message on the community mailing list, updated by Mmontour 16:25, 21 March 2009 (UTC). The "stall=0" parameter is required on at least some systems to prevent timeouts and errors.

The card is not accessible from the Freerunner in this mode.

Make the Neo FreeRunner revert to USB networking

The following script can be used:

#!/bin/sh
rmmod g_file_storage
mount /dev/mmcblk0p1 /media/card
modprobe g_ether
ifup usb0

Be sure to properly unmount on the host computer first, just as you would with any other USB storage.

Is it possible to pretend to be a USB hub, providing both g_ether and g_file_storage?

Not yet. At the moment it's one gadget driver at a time, but there is a project under way to allow use of multiple gadget drivers together. See this blog posting called 'USB Composite Gadget Framework' or Linux-USB Gadget API Framework