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[Q] USB host mode help request

Could someone be kind enough to explain to me how to set up/enable USB tethering from my rooted Droid Incredible (running CM7) to my rooted Xoom (HC 3.1, kernel 1.4.2, wireless only).
I made a USB host cable following this thread >http://forum.xda-developers.com/showthread.php?t=1068197
When I type : "Cd /dev/block" then "ls" on my Xoom terminal I can see "sda" for phone and "sda1" for my USB flash drive. And my phone recognizes the USB connection to my Xoom.
But when I type "busybox mount /dev/block/sda1/mnt/usbotg" on Xoom, the response is > "mount: can't read '/etc/fstab' : No such file or directory"
And while I can enable USB tethering on my phone, my Xoom doesn't recognize it (of course). My phone is also charging from the Xoom.
What can I do next to try to get this working?
Thanks, in advance.

I am also very interested in this. I have made my own USB host cable that I know is working (keyboard, mouse, etc. all work great) and I have a 4G USB dongle.
This dongle works in a fully hostless mode, meaning it does not need any drivers to run. I simply need the Xoom to recognize the ethernet over USB connection.
The dongle powers up and connects to the network, the Xoom just does not see or make use of the connection.
If I can make this work it will simply be awesome, getting 4G on my WiFi only Xoom before the 3G Xoom gets it ;-)

I use this USB host cable and it works great. Have tested it with my 750gb Oyen and 320gb WD Passport external HDD's, several usb flash drives (8-16gb), San disk USB memory card reader, and a USB keyboard.
For those having issues getting their Xoom to recognize USB storage devices here's what I've got and did to get it to work: I flashed my XOOM (3.1) to the 2.6.36.4 Tiamat_Xoom-v1.4.4-Full_Throttle Kernel and was unable to get the USBMount to recognize drives or storage at first.
I installed USB Mass Storage Watcher from the market (it's free) and it works awesome! Can mount any storage I want (NTFS, FAT16/32, HFS, HFS+, EXT2, ETX3, EXT4) with any capacity. I think this app will work with any rooted Xoom (or other devices). Under my Kernel my USB host is located under/usbOTG.
Hope this helps.

[Q] Can you use USB in host mode?

Can you use the USB in host mode on the transformer?
Can it host multiple USB storage with a USB hub? (say a camera and a hard drive, so I can get the files off)
Thanks

http://forum.xda-developers.com/showthread.php?t=1056592&highlight=gender+changer

People have said you can use the USB ports on the dock as a host for thumb drives and such. And if the dock does not enable it today it should work 3.1 ships. Check the second item (USB), http://developer.android.com/sdk/android-3.1-highlights.html

Thanks guys, I have done the search already.
I'm more interested in the experience of the transformer users, and would love to know if anyone got it to work

^^ the link i posted has several users and their experiences with what did and did not work.....

Not sure if I understand the question correctly. This morning I "loaded" my TF with everything I had: microSD, SD, external HDD, and MP3 player, all at once, while connected to the PC using the proprietary ASUS cable. I could access everything without problem.
For those who wonder - I did this only to find out where what is mounted...

funnycreature said:
Not sure if I understand the question correctly. This morning I "loaded" my TF with everything I had: microSD, SD, external HDD, and MP3 player, all at once, while connected to the PC using the proprietary ASUS cable. I could access everything without problem.
For those who wonder - I did this only to find out where what is mounted...
Click to expand...
Click to collapse
Nice, did you use a USB hub? or were you using the docking keyboard that has multiple usb ports?
Thanks

TheFlyingPig said:
Nice, did you use a USB hub? or were you using the docking keyboard that has multiple usb ports?
Thanks
Click to expand...
Click to collapse
All with the dock No USB hub.

[Q] USB Hosting

I bought a small micro - usb female adapter. When I plug it in, no matter what device i use it seems as those the xoom is not sending any power through it.
Ive tried
Camera
Charge Phone
usb mouse
usb wireless mouse
nothing is getting power.
Is there something i need to enable or do? Or has anyone esle has this issue? I am on 3.1....

You can not use a simple micro usb adapter cable, it has to be an OTG USB Host cable like the official Motorola camera connection kit that is now available. This is a bit expensive but readily available at your local Best Buy.
Take a look at some of the many posts on OTG cables and you can find info on cheaper cables that have been verified to work or on how to make your own.

you need a USB Host cable. Not just a regular sync cable. You can google for one or search the threads here where others have linked to confirmed working cables.

dang, thanks guys

I ordered one from ebay! hope it works

I have a question that applies here, I am on stock 3.1 Xoom WiFi/3G and just got my OTG cable, plug it in usb drive blinks like its working but where is it located on the Xoom? I've been looking around for it with Astro and File Explorer and I'm unable to find it... could someone tell me the path?

Techsniffer said:
I have a question that applies here, I am on stock 3.1 Xoom WiFi/3G and just got my OTG cable, plug it in usb drive blinks like its working but where is it located on the Xoom? I've been looking around for it with Astro and File Explorer and I'm unable to find it... could someone tell me the path?
Click to expand...
Click to collapse
i believe stock 3.1 only supports MTP, hence no USB mass storage.
http://en.wikipedia.org/wiki/Media_Transfer_Protocol

I've heard many conflicting stories, I would like some sort of confirmation rather then speculation about what will/will not work with the Moto Xoom (Stock 3.1) Wifi/3g and an OTG cable because I've seen posts saying yes and no to USB, portable HD's etc etc. Can anyone even provide me with some informative links? Everything I've searched for has been less than informative.

So, stock 3.1 Xoom is an MTP device, that is true.
However, with latest series of Tiamat custom kernels by Bigrushdog (see Android Development section) the usbOTG has been enabled. If you have already rooted and installed the proper bootloader/Tiamat kernel, then in File Expert you will find the usbOTG folder on the root directory, same level as internal sdcard and data folders. If you go up a step in sdcard, you should see your external sdcard. Is this clear?

I have rooted, using the Tiamat 1.6, I have access to the sdcard now but I am still unable to access my usb drive (thumb drive). I have an OTG usb cable and when I go into the /OTGusb its empty. The drive blinks as if its initializing but then nothing.

On a side note, I have looked through both OTGusb folders, restarted the Xoom with the OTG and usb plugged in as suggested in another post and nothing I've tried has worked in locating the usb drive.

Techsniffer said:
I have rooted, using the Tiamat 1.6, I have access to the sdcard now but I am still unable to access my usb drive (thumb drive). I have an OTG usb cable and when I go into the /OTGusb its empty. The drive blinks as if its initializing but then nothing.
Click to expand...
Click to collapse
I've found that there are two factors which may be in play here...
1. When I connect a flash drive it takes a bit of time for the directory structure to parse... It does show up in the OTGusb directory.
2. I've found that anything larger than 8GB (I've seen it stated in the forums as well) does not work (of if it does it takes forever and a day to become available)
Hope it helps...

I have same problem here. whenever I try to connect the USB with Motorola connector, it doesn't appear anything in otgusb

I'm not sure I am going to get what I want at this time with the OTG cable. My goal is to be able to use the OTG cable to connect a USB thumb drive to so I can carry additional movies, documents, etc without completely consuming the main Xoom storage.
Can the OTGusb cable support this? Do I need to wait for yet another update?
TIA

External drive with ics possible?

Hey guys. I had tiamat moray rom that allowed me to mount my 2 and 3 Tera byte drives which was great to ditch my laptop. With ics I get a black screen after drive finishes loading. USB otg watcher at that point would normally show the drive. I've tried both ics roms. Was wondering if anyone else has gotten this to work.
Sent from my Xoom using Tapatalk

yes it is, i just checked and mounted my 2tb external to mine. you need to use the app "drive mount" then it works. just make sure either your drive is powered or you have a powered hub. here is the app
http://forum.xda-developers.com/showpost.php?p=13337600&postcount=6

Mount two USB drive

Hi,
When I connect my one to hub with an OTG cable and put a usb hdd on it the harde drive is mounted and everything is perfect.
When I plug a second USB drive, it is not mounted.
I made the same experience on my Samsung Galaxy and it works fine, I see the two drives mounted on the phone.
Any idea to make it work ? Yours.

nash68 said:
Hi,
When I connect my one to hub with an OTG cable and put a usb hdd on it the harde drive is mounted and everything is perfect.
When I plug a second USB drive, it is not mounted.
I made the same experience on my Samsung Galaxy and it works fine, I see the two drives mounted on the phone.
Any idea to make it work ? Yours.
Click to expand...
Click to collapse
Is the hard drive sufficiently powered?

Hi,
Yes it is. The usb hub I use is powered with an external power source. The other point is that when I plug the disk alone, the phone mount it, but when I connect the flash drive, the phone try to do something, but at the end, onyl the first connected is online. If I connect the flash drive first, and then the hard drive, only the flash drive is mounted