Develop Bugs

[Q] Usb host on the go

Is there native support for Usb Host (like Samsung GS2)?
PS: I read the FAQ,but I didn't fount any video showing a nexus plugged to a usb pen o other peripherals

this was actually pointed out many times
yes it is supported
it was even mentioned on the launch day event on stage

potenza1985 said:
Is there native support for Usb Host (like Samsung GS2)?
PS: I read the FAQ,but I didn't fount any video showing a nexus plugged to a usb pen o other peripherals
Click to expand...
Click to collapse
Here is an article that gives more info on it...
http://www.androidpolice.com/2011/1...behind-galaxy-nexus-lack-of-usb-mass-storage/

USN Mass storage no, but USB Host yes ???
I'm utterly confused. If you look at
http://www.reddit.com/r/Android/comments/mg14z/whoa_whoa_ics_doesnt_support_usb_mass_storage/
it seems that GN can't be mounted as USB drive to a computer - they replaced it with MTP. How come that USB Host works ??

Because this time your phone will be the host and not your PC. That the internal storage can't be connected as ums doesn't mean your phone can't play host for usb thumb drives. All the honeycomb tablets do that already and some of them also just use mtp, like the Galaxy Tab 10.1 I'm typing this from.

AllGamer said:
this was actually pointed out many times
yes it is supported
it was even mentioned on the launch day event on stage
Click to expand...
Click to collapse
is it only your supposition? or you have already checked this?
as it says the link above:
"What we will probably do eventually is add an import/export concept to removable storage. So the Camera will always save to internal-16GB, and when you pop in an SD card (or insert a thumb drive on USB host devices) you can start a migration or import/export dialog."
Am I right that there is no ability to connect usb flash drives for now on this device? Sorry, English is not my native language so I could make a mistke while translate this.
Explain to me please. usb-host for usb flash devices present or not?
Thank you in advance.

Has anyone who has the phone ACTUALLY tried it?

vADimko said:
is it only your supposition? or you have already checked this?
as it says the link above:
"What we will probably do eventually is add an import/export concept to removable storage. So the Camera will always save to internal-16GB, and when you pop in an SD card (or insert a thumb drive on USB host devices) you can start a migration or import/export dialog."
Am I right that there is no ability to connect usb flash drives for now on this device? Sorry, English is not my native language so I could make a mistke while translate this.
Explain to me please. usb-host for usb flash devices present or not?
Thank you in advance.
Click to expand...
Click to collapse
Id like to know as well..
Sent from my GT-I9100 using XDA App

I got some answer from modaco forum. man said:
"I tried it with my OTG cable from my Xoom. Plugged in a flash drive and nothing happened... Did not show up in astro either."
It's strange that nobody who already own nexus from this forum didn't tried this function yet. only conjectures that "it must have usb-host".
meanwhile this is very important function for device that doesn't have micro SD support.=(

vADimko said:
I got some answer from modaco forum. man said:
"I tried it with my OTG cable from my Xoom. Plugged in a flash drive and nothing happened... Did not show up in astro either."
It's strange that nobody who already own nexus from this forum didn't tried this function yet. only conjectures that "it must have usb-host".
meanwhile this is very important function for device that doesn't have micro SD support.=(
Click to expand...
Click to collapse
oh no! wonder if anyone with the phone can confirm this? honestly this shi* happened with the nexus S with the hdmi out. It was possible on the galaxy s, but not the nexus s. Now it seems the otg works on the galaxy s2 but not galaxy nexus. Sigh, love Samsung.
Sent from my Google Nexus S using Tapatalk

can't belive that this phone doesn't support USB OTG, please give us more info on this if you have a nexus and you can try it.

suomaf said:
oh no! wonder if anyone with the phone can confirm this? honestly this shi* happened with the nexus S with the hdmi out. It was possible on the galaxy s, but not the nexus s. Now it seems the otg works on the galaxy s2 but not galaxy nexus. Sigh, love Samsung.
Sent from my Google Nexus S using Tapatalk
Click to expand...
Click to collapse
I think that it isn't samsung fault. GN have the same USB swith that Galaxy Note have. so the hardware is similar. I think the reason may be in new ICS (in that case I hope we will get host later) or in same that GN doesn't support usb mass storage (in that case we can forget about host).

vADimko said:
I think that it isn't samsung fault. GN have the same USB swith that Galaxy Note have. so the hardware is similar. I think the reason may be in new ICS (in that case I hope we will get host later) or in same that GN doesn't support usb mass storage (in that case we can forget about host).
Click to expand...
Click to collapse
My past 3 phones have been samsungs. I like the brand but I have this suspicion that they like to keep their better features for their own flagship phones. Not that I can blame them.
Would really appreciate it if anyone can confirm or deny if the otg works on browsing thumb drives.
Sent from my Google Nexus S using Tapatalk
Sent from my Google Nexus S using Tapatalk

vADimko said:
I think that it isn't samsung fault. GN have the same USB swith that Galaxy Note have. so the hardware is similar. I think the reason may be in new ICS (in that case I hope we will get host later) or in same that GN doesn't support usb mass storage (in that case we can forget about host).
Click to expand...
Click to collapse
It's neither.
ICS obviously supports it, as it was part of the sourcecode from hc and onwards.
And it cannot have anything to do with the way it connects to a pc, as that is nothing but a problem with the fact, that the storage for the pc and the storage for app-data is on the same partition, meaning that mounting this partition to a pc in ums would render the phone useless meanwhile.

mortenmhp said:
It's neither.
ICS obviously supports it, as it was part of the sourcecode from hc and onwards.
And it cannot have anything to do with the way it connects to a pc, as that is nothing but a problem with the fact, that the storage for the pc and the storage for app-data is on the same partition, meaning that mounting this partition to a pc in ums would render the phone useless meanwhile.
Click to expand...
Click to collapse
maybe I don't understand but we are talking about connecting usb flash drive to nexus via otg adapter but not about connecting nexus to pc as a mass storage.
If I understood you properly correct me.

I have just tried this and did nothing, like it wasn't even connected. I tried it with a 8gb kingston flash drive and a 250gb samsung drive. Both nothing sorry.

jms.flynn said:
I have just tried this and did nothing, like it wasn't even connected. I tried it with a 8gb kingston flash drive and a 250gb samsung drive. Both nothing sorry.
Click to expand...
Click to collapse
I'm sure this will sound patronising: do you own a GS2? Does the adapter that you used work with a GS2?

WhiterThanWhite said:
I'm sure this will sound patronising: do you own a GS2? Does the adapter that you used work with a GS2?
Click to expand...
Click to collapse
No it doesn't but I think I know why, both of the drives are ntfs. Let me format them to fat 32 and try again.

You have to use a cable like this to test:
xxx.ebay.it/itm/Micro-B-USB-Host-OTG-Cable-for-Samsung-Galaxy-S2-SII-/320739400862?pt=UK_MobilePhones_MobilePhoneAccesories_MobilePhoneDataCables_JN&hash=item4aad8edc9e

jms.flynn said:
No it doesn't but I think I know why, both of the drives are ntfs. Let me format them to fat 32 and try again.
Click to expand...
Click to collapse
I'll be waiting anxiously. Lack of native USB Host mode could be the straw that broke the camel's back for me.

How do I mount a USB drive?

I've got 4.0.2 running - mice work fine. But how do I reliably mount USB drives? I tried downloading USB watcher OTG from the market, but the application is incredibly buggy and unstable.
Any other ways?
Thanks.

ICS and the Galaxy nexus no longer uses USB mount.
We now have something called MTP, and If you have the correct drivers installed your device should appear in my computer as a media device and then you just copy and paste as normal.
I have just had a ***** of a time getting my GN to show up in My Computer. In the end all I had to do was update Windows Media Player.
Sent from a phone that is not running ICS

cjward23 said:
ICS and the Galaxy nexus no longer uses USB mount.
We now have something called MTP, and If you have the correct drivers installed your device should appear in my computer as a media device and then you just copy and paste as normal.
I have just had a ***** of a time getting my GN to show up in My Computer. In the end all I had to do was update Windows Media Player.
Sent from a phone that is not running ICS
Click to expand...
Click to collapse
Lots of people seem to be getting these confused. I'm talking about using USB OTG to plug USB flash drives into the Nexus and then access the files on the drive.
MTP is working fine for me with both Windows 7 and Windows 8. No need for installation of drivers, it seems to be 'plug and play'.
Thanks for the reply!

WhiterThanWhite said:
Lots of people seem to be getting these confused. I'm talking about using USB OTG to plug USB flash drives into the Nexus and then access the files on the drive.
MTP is working fine for me with both Windows 7 and Windows 8. No need for installation of drivers, it seems to be 'plug and play'.
Thanks for the reply!
Click to expand...
Click to collapse
ahh, got ya. I've had MTP on the brain since i couldnt get it working last night. I got it working just before i read your post

Mount command via something like terminal emulator? .. Not sure on the full details but it should be something similar, maybe?
Also I see you've jumped ship as well cjward ;-).

What a coincidence. Literally as soon as I posted this, Chainfire released StickMount, which allows automatic mounting of USB sticks in the Galaxy Nexus. For anyone else wondering, head over to the thread here:
http://forum.xda-developers.com/showthread.php?t=1400034

WhiterThanWhite said:
I've got 4.0.2 running - mice work fine. But how do I reliably mount USB drives? I tried downloading USB watcher OTG from the market, but the application is incredibly buggy and unstable.
Any other ways?
Thanks.
Click to expand...
Click to collapse
are you running stock kernel or custom kernel.
i think unless you run a custom kernel, you will not be able to mount a USB drive.

This what you are looking for http://forum.xda-developers.com/showthread.php?t=1400034
Sent from a phone that is not running ICS

I'm having a harder time finding an adapter that turns USB into micro. I ordered what I thought was the right product but when it arrived it's just to convert someother weird mini USB to standard micro. Anyone know the best place to get these? Preferably in the UK?
EZ

djcr33p said:
I'm having a harder time finding an adapter that turns USB into micro. I ordered what I thought was the right product but when it arrived it's just to convert someother weird mini USB to standard micro. Anyone know the best place to get these? Preferably in the UK?
EZ
Click to expand...
Click to collapse
This is the one that I bought:
http://www.ebay.co.uk/itm/330647810035?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
It's working fine with my Nexus.

USB otg help

Which kernels support USB otg? Thanks
Sent from my Galaxy Nexus using XDA App

I don't think its a kernel issue but I am having problems mounting usb thumb drive as well. I got my wireless keyboard and mouse to work on it but when I try and use the stickmount app but it just closes after trying to find it. I tried to manually mount it in terminal using mount /dev/usb /sdcard/usb. It don't do anything. Lol when I do -- mount -t vfat /dev/usb /sdcard/usb it say device block required I am not sure what I'm doing wrong
Sent from my Galaxy Nexus using XDA App

Bump
Sent from my Galaxy Nexus using XDA App

bbm21 said:
Which kernels support USB otg? Thanks
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
android 4.0.2 doesn't support it officially, you have to use stickmount app by chainfire to use it. i can't answer if .3 or up will and when have official support. but .3 might have it already.
bryantjopplin said:
I don't think its a kernel issue but I am having problems mounting usb thumb drive as well. I got my wireless keyboard and mouse to work on it but when I try and use the stickmount app but it just closes after trying to find it. I tried to manually mount it in terminal using mount /dev/usb /sdcard/usb. It don't do anything. Lol when I do -- mount -t vfat /dev/usb /sdcard/usb it say device block required I am not sure what I'm doing wrong
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
sometimes i have to unplug from the female cable on my otg cable. don't unplug your otg from phone. just your flash drive and reinsert. i've just started using it and usually taking it and reinserting right away does the trick. now we just need to find out what we need to do get otg and charging the usb host, which is the nexus at the same time. i'd rather do it through usb, but being able to have an offical DESK DOCK OR CAR DOCK SAMSUNG AND GOOGLE HINT HINT AND ONE MORE HINT would be a nice consolation prize until we figure out how.

I have USB thumbdrive (4GB) working on GNex with ARHD 2.1.2 rom 4.0.2 kernel using StickMount (from the Market).
Very cool. Without StickMount I could see the drive is initialized (LED flashes) but could not find the drive.
Cheap ebay OTG Host cable.

pukemon said:
android 4.0.2 doesn't support it officially, you have to use stickmount app by chainfire to use it. i can't answer if .3 or up will and when have official support. but .3 might have it already.
sometimes i have to unplug from the female cable on my otg cable. don't unplug your otg from phone. just your flash drive and reinsert. i've just started using it and usually taking it and reinserting right away does the trick. now we just need to find out what we need to do get otg and charging the usb host, which is the nexus at the same time. i'd rather do it through usb, but being able to have an offical DESK DOCK OR CAR DOCK SAMSUNG AND GOOGLE HINT HINT AND ONE MORE HINT would be a nice consolation prize until we figure out how.
Click to expand...
Click to collapse
Android 4.0.2 does not support auto mounting USB drives automatically, or does not support USB host mode ?
I'd like to use my GN as a remote control for a DSLR. I believe it is not a matter of mounting a flash drive (but who knows ?), and I can't get it to work on my stock Android 4.0.2. It may be the cable I bought which does not work, but I'd like to know if it's not my Android version which causes the problem before buying another cable ?

Will my tablet recognise my Sony Handycam? Can i upload videos to youtube from it?

Hey guys
So basically I have a Sony Handycam DCR-HC19E camcorder, and was wondering if i plugged it into my galaxy tab using the samsung usb adapter thing, will it recognise it and allow me to take and transfer files to and from the tab?
As i want to upload some videos to youtube but it wont work on my computer?
So im basically asking if anybody has got mass storage access to devices they have plugged into the tab 10.1
Thanks in advance for any help
Adam

I have a Sony dcr-sr100. It mounts to my galaxy tab 10.1 on stock firmware.
I have found that " high" powered USB devices are rejected by this tab, which is annoying. But i have found that how you connect the devices matter also.
E.g. if the adaptor is plugged in then i use my USB drive to the adapter is does not work.
If my USB drive is plugged into the adapter then into the tab it usually works, if not pull out and try again right away.
If you can get a powered USB hub, this will help for connecting more devices. Generic keyboard & mice work fine ( if not " high" powered)
USB mass storage otg app in the market will help to mount more drives at once and enable access to NTFS formatted drives which are not supported on the stock firmware.
Sent from my GT-P7510 using XDA

brb8two said:
I have a Sony dcr-sr100. It mounts to my galaxy tab 10.1 on stock firmware.
I have found that " high" powered USB devices are rejected by this tab, which is annoying. But i have found that how you connect the devices matter also.
E.g. if the adaptor is plugged in then i use my urban drive to the adapter is does not work.
If my USB drive is plugged into the adapter then into the tab it usually works, if not pull out and try again right away.
If you can get a powered USB hub, this will help for connecting more devices. Genetic keyboard & mice work fine ( if not " high" powered)
USB mass storage app in the market will help to mount more drives at once and enable access to NTFS formatted drives which are not supported on the stock firmware.
Sent from my GT-P7510 using XDA
Click to expand...
Click to collapse
Thanks for all this info!
So would u recommend getting a Samsung USB adapter thingy and them trying from their?
Sent from my GT-I9100 using xda premium

This is the one I got.
http://dx.com/p/106541?r=78454077
I don't see much point paying more than this.
Also the " card reader" versions are designed to only mount one card at a time since that is how the stock device handles otg. But if you already have USB card reader your happy with, it can be used with USB mass storage OTG app from the market. ( Which also adds NTFS support).
Sent from my GT-P7510 using XDA

Sprite cheers. I may just get a 3 pound one off Amazon, then see if it works
Sent from my GT-I9100 using xda premium

I got the corded version, as I thought it was more risky using the "Block" style one that might break the connector 30pin if it was knocked too hard.
There is rick of the corded version breaking on the cable, but it is a cheap replacement fix.
Sent from my GT-P7510 using XDA

i need to connect the high powered external 1 TB hard drive

yogeshmha said:
i need to connect the high powered external 1 TB hard drive
Click to expand...
Click to collapse
Ok, what information do you need?
You have made a statement but not asked a question. Answers to your statement have been covered above also.
Sent from my GT-P7510 using XDA

[Q] Why won't USB OTG work correctly? (Galaxy Note 2 N7100 x - demo version)

I have a demo Galaxy Note 2, which is running on the Revolution HD 8.0 rom. I flashed the following PIT file;
PIT_N7100_16GB_20121102.pit
The device works perfectly; very smooth, no FC's, the full 10.16GB of system space etc etc. However, one issue I am having is getting USB OTG to work.
When I plug in any one of my 4 USB OTG cables, I get the following;
'USB Mass storage connected'
'USB mass storage unexpectedly removed'
Does anyone have any ideas why this might be happening? I was hoping to use my Note 2 as a portable media viewer for the photos/videos I take on my DSLR. Kind of frustrating ...
Does your device do this at all? Better still, if you have a demo version of the Note 2, does USB OTG work on your device?
Really hope someone can help,
Thanks

There is a fix for that in custom roms try wanam rom 2.8.
I think you may find the flashable mod somewhere in GS2 forum.
Good luck
Sent from my GT-N7100 using xda premium

Your charging port seems to be loose. You may have to change it.
Sent from my GT-N7100 using xda premium

USB OTG works on my device but...
Without a power source I can only see USB sticks and SDCards.
If my hard drive enclosures have an external power source that I hook them up to, then they work too. It the drive is NTFS formated then you have to use Paragon exFAT, NTFS & HFS+ to see it.

Thanks very much for taking the time to reply. I actually ordered and replaced the usb connection port, yet the issue still remains. So I am quite sure it isn't a hardware fault. I'll try and find the mod you have mentioned ...
Just out of curiosity, is there anything else I can flash beyond the pit file, the kernel and the rom? My device is a 'demo' Note 2, so I am starting to think that maybe Samsung put some other firmware file on the device that tells it not to fully mount USB OTG devices (it'd make sense to do such a thing in order to stop customers in a shop loading up their software from a USB stick).
Richard_10 said:
There is a fix for that in custom roms try wanam rom 2.8.
I think you may find the flashable mod somewhere in GS2 forum.
Good luck
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse

Sir, how did you get a demo version of note 2? Do samsung sell them to? Lower price? Im interested.
Sent from my GT-N7100 using Tapatalk HD

I bought it from a guy who was winding up his mobile phone shop business. He had 4 of these things. The mobile phone component doesn't work - but everything else does (apart from USB OTG on my device - v.v.frustrating!).
You can find them on Ebay by searching for N7100x or N7100 demo version.
If anyone else has a N7100x, please tell me if your USB OTG works.The Wanam rom fix is for wakelocks caused by disconnecting a USB OTG device --
My Note 2 doesn't mount USB devices fully in the first place...I'll keep searching in the hope of finding a solution
flatronics said:
Sir, how did you get a demo version of note 2? Do samsung sell them to? Lower price? Im interested.
Sent from my GT-N7100 using Tapatalk HD
Click to expand...
Click to collapse

lohsmith said:
I bought it from a guy who was winding up his mobile phone shop business. He had 4 of these things. The mobile phone component doesn't work - but everything else does (apart from USB OTG on my device - v.v.frustrating!).
You can find them on Ebay by searching for N7100x or N7100 demo version.
If anyone else has a N7100x, please tell me if your USB OTG works.The Wanam rom fix is for wakelocks caused by disconnecting a USB OTG device --
My Note 2 doesn't mount USB devices fully in the first place...I'll keep searching in the hope of finding a solution
Click to expand...
Click to collapse
So the pit file how do you flash it Odin?

jutley said:
So the pit file how do you flash it Odin?
Click to expand...
Click to collapse
Yep, just flashed it using Odin....gave me 16GB instead of the usual 5.3GB that are normally visible on demo phones.

same problem with my unit. please inform me if ever you have the solution. I will do the same if i got the solution.thanks:good:

psychEinside said:
same problem with my unit. please inform me if ever you have the solution. I will do the same if i got the solution.thanks:good:
Click to expand...
Click to collapse
I've tried everything I can think of to get this problem sorted. I am starting to think that it is a hardware issue relating to the fact that the 3G aerial that would normally be powered/connected to the USB connector board is not attached.
As such, the USB power being delivered to USB OTG devices is higher than normal (given that there is no 3G power drain)...so it perhaps overloads and disconnects connected devices.
I have replaced the USB connector board with a hardware revision 0.2 board (the one that came with the phone was a 0.7). I have installed the following files via Odin;
BOOTLOADER_N7100XXDLJ2_422394_REV00_user_low_ship.tar.md5
CODE_N7100XXDLJ2_422394_REV00_user_low_ship.tar.md5
CSC_XEF_N7100OXADLJ2_422394_REV00_user_low_ship.tar.md5
MODEM_N7100XXDLJ2_422394_REV00_user_low_ship.tar.md5
t03g_0907.pit
I don't think there are any other software partitions on the phone that can be overwritten (the phone is therefore 'stock' as far as could possibly be the case with a demo phone).
If you do find a solution, I would be most grateful to hear about it. This is my perfect device for video/picture editing & uploading to Youtube whilst cycle touring (I don't need the phone connectivity when abroad). Although I can work around the USB OTG limitation, it would be incredibly useful to have that functionality.
All the best,
Laurence

me to.. stil looking for this solution. When OTG pluged to my phone, it's rapidly connect-disconnect in 2 seconds x_x
ROM : hawkish extreem 4.1.2
Kernel : Stock

I have another issue. When i plug OTG cable, I can use flash disc and everything is OK. But then, when i unplug and plug in charger, charging doesn't start. I have to reboot phone, and then charges...
Is this normal?
@phablet

Guys i have the same problem i was using the OTG cable perfectly for more than two months but just today it started giving UNEXPECTED ERROR messages..im on stock rom unrooted..when i connect my flash drive it open then it removes unexpectedly.. even tried to format my flash drive.. any solution would be really grateful
Sent from my GT-N7100 using Tapatalk 2

mufaddalezzi said:
Guys i have the same problem i was using the OTG cable perfectldoesn't work with my note 2y for more than two months but just today it started giving UNEXPECTED ERROR messages..im on stock rom unrooted..when i connect my flash drive it open then it removes unexpectedly.. even tried to format my flash drive.. any solution would be really grateful
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Bump
Anyone found a solution yet?
I have the same issue where the flash drive and OTG cable work with my brother's moto g but doesn't work with my note 2. I'm running stock unrooted.

K55V said:
Bump
Anyone found a solution yet?
I have the same issue where the flash drive and OTG cable work with my brother's moto g but doesn't work with my note 2. I'm running stock unrooted.
Click to expand...
Click to collapse
Hi! I have same problem after I flash CM 11, but maybe it's just a concidence. I think it's a hardware problem.
So any one found solution? It's very important function for me in my work.

easy solution
I face the same problem
solution is very simple
go to Play Store
search USB mass storage
or the app name (USB mode switch for SGS1 on CM) by Zatta
then install the app
problem solved