Develop Bugs

What is usb host otg?

and how is it different from MTP?

usb host on the go.
Means you can use an adapter to plugin controlpad/keyboard/etc..
-m

It has nothing to do with MTP.
Basically allows you use flash drives, mouses, keyboards on your phone with an adapter. Probably... microUSB to full-size USB.
USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as digital audio players or mobile phones to act as a host allowing a USB flash drive, mouse, or keyboard to be attached.
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http://en.wikipedia.org/wiki/USB_On-The-Go

oh... that's it? With all the ranting I read about the phone not supporting usb otg I was thinking it was something more important like not being able to transfer files easily.
Why would you want to hook up a keyboard to a phone?

melterx12 said:
oh... that's it? With all the ranting I read about the phone not supporting usb otg I was thinking it was something more important like not being able to transfer files easily.
Why would you want to hook up a keyboard to a phone?
Click to expand...
Click to collapse
Who knows? lol. the flash drive could come in handy though. It'd be expandable storage OR! if you have a ASUS transformer, you can hook the transformer dock with the Galaxy Nexus and you'd have a portable charger with you that can transform into a netbook or a tablet or just into a charging station

so, I could hook up a USB hub and connect a mouse and keyboard (USB screen ;-)?

melterx12 said:
Why would you want to hook up a keyboard to a phone?
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Click to collapse
One reason would be so you could type on it without using the on-screen keyboard. I have a bluetooth keyboard that I use with mine sometimes. If I added a bluetooth or USB mouse and MHL adapter to a monitor or TV, I'd basically have a complete usable computer.
In some cases it might be very useful, in others it might be more trouble than it's worth. Some people might like it, others might think it's stupid. Regardless of any of that, I think it's pretty cool that it can be done and that the lines between phone/tablet/laptop/desktop are becoming very blurry these days

Has anyone attached two USB devices?

I want to attach two usb devices to my Note.
One will be the MHL adapter and one will be the 2.4ghz wireless unit for a keyboard like this http://www.ebay.co.uk/itm/250996855143.
I need a Micro USB male to 1x Micro USB female and 1x USB female adapter.
These for some strange reason don't exist
I was just wondering if anyone has done anything similar.
I know I could get a Bluetooth keyboard, but I don't have one. I do however have the above keyboard

Oh wow! I'm interested into this keyboard! Does Lenovo Mini Wireless keyboard work perfectly with the Note? All buttons are recognized and trackball mouse is usable?

Its really good, i use it on my Note and my Libretto W100. The mouse and keyboard work perfectly.

vinokirk said:
I want to attach two usb devices to my Note.
One will be the MHL adapter and one will be the 2.4ghz wireless unit for a keyboard like this http://www.ebay.co.uk/itm/250996855143.
I need a Micro USB male to 1x Micro USB female and 1x USB female adapter.
These for some strange reason don't exist
I was just wondering if anyone has done anything similar.
I know I could get a Bluetooth keyboard, but I don't have one. I do however have the above keyboard
Click to expand...
Click to collapse
You cannot attach 2 or more devices to the same usb port. You need an usb hub for that, but I don't know if the MHL would work with the hub. I will try later today to attach an usb hub and connect more devices, and will report my findings.
br
d3m0n
Edit:
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I have successfully connected a self powered usb hub to the galaxy Note, and connected 2 thumb drives, a combo card reader, and a mouse. The Note mounted both of my thumb drives, as /usbstorage/sda and /usbstorage/sdb respectively. Then I inserted a mikroSD card into the card reader and the phone mounted it as sdc. I then inserted an sony memory stick into the card reader and it was mounted as sdd. All mounts were usable, and I could watch movies from them, and watch pictures, copy files from one to the other, etc... But, when I connected the mouse to the usb hub it didn't recognize it. Whatever combination I tried the Note would not recognize my mouse, when plugged into the usb hub. When plugged directly to the OTG cable it works perfectly, but won't work when connected to the hub (maybe cables are to long).
Using rooted stock xxla6 firmware.
Edit2:
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Just found out, that usb otg and mhl cannot work simultaneously. When the MHL cable is plugged in, the GNote's microusb port will become an MHL port, and from that point it will not act as an usb host or usb slave. :-(
It's too bad, 'cause I really wanted to connect it to my full hd monitor and use a mouse and keyboard, too.

d3m0n1 said:
Edit2:
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Just found out, that usb otg and mhl cannot work simultaneously. When the MHL cable is plugged in, the GNote's microusb port will become an MHL port, and from that point it will not act as an usb host or usb slave. :-(
It's too bad, 'cause I really wanted to connect it to my full hd monitor and use a mouse and keyboard, too.
Click to expand...
Click to collapse
How about bluetooth mouse+keyboard instead ? That would keep your USB port free for MHL

chriszzz said:
How about bluetooth mouse+keyboard instead ? That would keep your USB port free for MHL
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That does work, and works a treat I might add.
Swyped from my finger, to your face on my Samsung Galaxy Note, using Tapatalk!

I like the idea of USB Hub
chriszzz said:
How about bluetooth mouse+keyboard instead ? That would keep your USB port free for MHL
Click to expand...
Click to collapse
This is the setup I'm going to do also. But as with topic, it's also very tempting to have everything USB powered. Since it will decrease latency and maybe power consumption as well? (as opposed to bluetooth) Well, MHL to HDMI will still drain our battery even if we connect it to power source
You can also try NZtechfreak's workaround:
http://www.androidnz.net/2011/11/samsung-galaxy-note-connectivity.html

Micro usb splitter?

Hi i wonder where i can buy a microusb splitter for my phone so that i can use, both usb keyboard and hdmi cable together. I just tried keyboard+mouse using a usb hub, and it worked fine...
does it even exist?

Sorry, but this can't work. When the phone is putting out HDMI, the USB can't be used as it takes the same connector pins. You can do what you want with a bluetooth keyboard and mouse, but sorry, not with wired.

try to find the smallest hub there is, that's the closest you will get to a usb splitter that works. Just splitting will never work, the signals have to be divided with some intelligence.
/edit... never mind didn't read the MHL/HDMI part... don't think that will work

I am also intrested in this topic. I want to plug in the HDMI cable and s remote controler. I want to use my phone as a media center.

tomig64 said:
I am also intrested in this topic. I want to plug in the HDMI cable and s remote controler. I want to use my phone as a media center.
Click to expand...
Click to collapse
You flat out can't; it is a limitation of the more common MHL implementation, and the Galaxy Nexus uses this MHL implementation.
Samsung had to use a new kind of MHL connection for the Galaxy S 3 to make this exact scenario possible.
*edit* You can plug in an HDMI cable and use a bluetooth remote, though, if that might work for your needs.

[Q] Micro USB to VGA/HDMI ?

Oke so here is the question.
is it posible to do a setup with USB to vga/HDMI + keyboard&mous and maybe a USB stik/ExHDD?
all trough micro usb? or is there only 1 posibility that you use UDB to VGA/HDMI and the rest trough bluethoot/wifi?
i need to hook up my phone to my monitor vga port for a product presentation.
i really hope this is posible.
or maybe makeing it posible trough app wize.
sorry for my lack of english,but im in a hurry atm.

You need a mhl adapter...HDMI to MHL to TV.. need power to this cable also that connects to the side of the adapter.
Sent from my Galaxy Nexus using XDA

Like above said, MHL to HDMI adapter. You can't connect any USB stick / keyboard or mouse to the phone while connected with the MHL adapter though.

Herman76 said:
Like above said, MHL to HDMI adapter. You can't connect any USB stick / keyboard or mouse to the phone while connected with the MHL adapter though.
Click to expand...
Click to collapse
ah bummer, thats what i wanted to know.

Galaxy S III MHL Adapter Supports USB OTG--Work with GN?

The new MHL adapter for the Galaxy S III supports both HDMI and USB OTG simultaneously, according to this article:
http://www.gottabemobile.com/2012/06/29/galaxy-s-iii-new-mhl-connector-also-enables-usb-on-go/
I'm wondering if this means it could be used for USB OTG with a flash drive while charging the phone at the same time--something that's impossible with current adapters and cables. And does it also work with the Galaxy Nexus? Does anyone happen to have the adapter and a GN to test this?

highvista said:
The new MHL adapter for the Galaxy S III supports both HDMI and USB OTG simultaneously, according to this article:
http://www.gottabemobile.com/2012/06/29/galaxy-s-iii-new-mhl-connector-also-enables-usb-on-go/
I'm wondering if this means it could be used for USB OTG with a flash drive while charging the phone at the same time--something that's impossible with current adapters and cables. And does it also work with the Galaxy Nexus? Does anyone happen to have the adapter and a GN to test this?
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My friend has an S3 and I know the 5 pin MHL adapter we use doesn't work with his because of the pin configuration, so I would assume if he can't get HDMI out using the 5pin, we won't be able to get HDMI out using the 11pin. Of course I am only guessing, but it makes sense to my mind.

I don't see how it could work, to use the HDMI out you need the charger cable plugged in to the MHL adaptor. So where would the OTG cable go?

danben7 said:
I don't see how it could work, to use the HDMI out you need the charger cable plugged in to the MHL adaptor. So where would the OTG cable go?
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Looks to me like the standard S3 MHL adapter has a micro USB "charging port". Could be that it could also accept an external drive. I don't have the phone or the cable yet, so I can't test. Maybe somebody who has both could post results?

it's not actually a charging port, it's a power port because apparently it needs more power to output HDMI, i.e. if you don't have the charger plugged in to the vacant port, no HDMI.

Samsung does sell a bunch of dual head micro usb to usb cables.... so maybe you need one of those and they sell this: http://www.samsung.com/us/mobile/cell-phones-accessories/ET-R205UBEGSTA which says it allows you connect drives, keyboards, etc to S3's....

Yeah those work, I actually use this one:
http://www.ebay.com/itm/Micro-USB-2...100-Note-i9220-Nexus-i9250-XOOM-/120894431890
or something similar, but you still can't use HDMI when you use those
you can however plug in keyboard, mouse, usb drive and anything else you want all at once which is cool

danben7 said:
Yeah those work, I actually use this one:
http://www.ebay.com/itm/Micro-USB-2...100-Note-i9220-Nexus-i9250-XOOM-/120894431890
or something similar, but you still can't use HDMI when you use those
you can however plug in keyboard, mouse, usb drive and anything else you want all at once which is cool
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Click to collapse
Is that one on eBay compatible with the S3????? Isn't the pin out's different?

stan.s said:
Is that one on eBay compatible with the S3????? Isn't the pin out's different?
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Click to collapse
only MHL is affected by the pins, usb OTG is not affected by the new layout