Database Develop

How is the USB OTG supposed to work?

I downloaded Nook Tweeks, enabled USB host mode and External vBus, but nothing happens when I connect a USB-stick via a micro ubs to usb converter.
Am I supposed to do something else? Or does the USB-stick have to be in some special format?

BrotherZero said:
I downloaded Nook Tweeks, enabled USB host mode and External vBus, but nothing happens when I connect a USB-stick via a micro ubs to usb converter.
Am I supposed to do something else? Or does the USB-stick have to be in some special format?
Click to expand...
Click to collapse
I got the same exact problem. It didn't seem to work at all.I think I'll have to order the adapter to see if the problem is the OTG cable or not

dannghiem0801 said:
I got the same exact problem. It didn't seem to work at all.I think I'll have to order the adapter to see if the problem is the OTG cable or not
Click to expand...
Click to collapse
I ordered some cheap ones from DX, but since there are two of them and none of them works I'm assuming it's the Nook the problem is with.

BrotherZero said:
I downloaded Nook Tweeks, enabled USB host mode and External vBus, but nothing happens when I connect a USB-stick via a micro ubs to usb converter.
Am I supposed to do something else? Or does the USB-stick have to be in some special format?
Click to expand...
Click to collapse
It could be the USB-sticks are trying to draw too much power. The Nook host port will only supply low power USB devices (<100mA) and it is also best to have a fairly well charged battery. Some sticks work and others don't.
If you have a powered USB hub then this supplies the power so there is no problem. So try with a powered hub to at least see if that is the issue.

bobtidey said:
It could be the USB-sticks are trying to draw too much power. The Nook host port will only supply low power USB devices (<100mA) and it is also best to have a fairly well charged battery. Some sticks work and others don't.
If you have a powered USB hub then this supplies the power so there is no problem. So try with a powered hub to at least see if that is the issue.
Click to expand...
Click to collapse
I used the same USB in this chart Nook Color USB HOST Device Compatibility List Sandisk Cruzer 8GB on CM7
I bought the Nook Color is to connect it to my camera via DSLRcontroller but so far still not successfully with USB stick.

Read my thread , it should answer most if not all your questions
[23 Jan 2012][USER/DEV] USB Host Support & Development [CM7/CM9]
I'm hoping to get some free time and update it this weekend with more info and probably a widget

I could never get usb host working on cm7. I have been trying to use RYC usb to control my Nikon Dslr . Once i switch over to CM9 beta it worked first time.
Sent from my Nook Color (CM9 ICS Beta)

Dj-Gutz said:
Read my thread , it should answer most if not all your questions
[23 Jan 2012][USER/DEV] USB Host Support & Development [CM7/CM9]
I'm hoping to get some free time and update it this weekend with more info and probably a widget
Click to expand...
Click to collapse
I have read this thread over and over again. Ill try to run CM9 soon to see if it works
Sent from my NookColor using Tapatalk

CM7 also shouldn't give you any trouble , as long as its FAT32 and you are using a hub
can you explain what exactly have you tried and provide logs?

I didnt use usb hub,just enable the usb host mode in Nook Tweak app and plug my usb via otg cable.
Sent from my MB508 using XDA App

Then you didn't read good enough the thread or the chart..
You need an external hub ( powered or non-powered ) to work with the sandisk cruzer.

Thanks a lot, i ll order one and try it out.
I tried to connect with my camera but nothing happened,I guess I have to try with usb hub as well
Sent from my MB508 using XDA App

Dèll streak 7 usb otg not working?

I just got pdmi(dell streak usb) to usb otg cable, but it dont powerup any device. I'm using dell streak stock rom android 3.2. I think it's kernel doesn't support usb host api. Can somebody tell me any solution?
Thanks in advance
Problem is fixed
There is no any problem with the usb host api, kernel or drivers. It was due to the power (voltage) coming from host port, and It can be fixed using any extrnal usb power source,
1. you can use a usb cable which has a female usb on one side and two male usb on other side i.e. usb female to 2 male Y cable. You can buy it from ebay, use usb Y cable keyword.
I also try, multiple devices on dell streak usb host cable, using usb hub. It was working properly.
You can use es file explorer for data transfer.
steps to follow:
0. Root your dell streak and install USB OTG Helper.apk from android play store.
1. Switchoff dell streak 7,
2. Connect dell usb host cable (pdmi to usb otg adapter) to male connector of usb Y cable, and then connect usb device to female connector of usb Y cable.
3. Switch on dell streak 7.
4. After, Dell streak lock screen, connect another male connector of usb Y cable to power source (Dell Ac adapter).
5. go to usb otg helper and click on mount, it can may start adobe reader, don't worry.
6. go to es file explorer, and your drive is usb_drive_1.
God Bless You All......
Regards,
Sahota

I dont believe any kernel on the S7 ever supported OTG, the stock 5xx ones definitely dont. Even if they did you likely have to supply your own power as the S5 did get working OTG kernels but the S5 never supplied power.

No OTG because dell didn't give us the drivers.

TheManii said:
I dont believe any kernel on the S7 ever supported OTG, the stock 5xx ones definitely dont. Even if they did you likely have to supply your own power as the S5 did get working OTG kernels but the S5 never supplied power.
Click to expand...
Click to collapse
I'm not sure about your's, but I' using DS7, stock android 3.2. It's working properly. using my above method.

giveen said:
No OTG because dell didn't give us the drivers.
Click to expand...
Click to collapse
Drivers are already in stock android 3.2, try using above method.
Regards,
Sahota

Definitely works fine as long as you supply external power. Tested and working with mouse, keyboard, and Logitech gamepad.
Sent from my Streak 7 using xda app-developers app

[Q] USB OTG: usb1 found, cannot use keyboard

Hello,
I have a USB OTG cable and dell keyboard that I have tested and work in OTG mode on a Nexus 7, however i cannot get them to function with my HP Touchpad 32gb, running CM9 2.6.35, built on Sun Oct 28.
The device recognizes when I plug in anything via USB, but only as a generic Linux USB hub, and not as any particular device. Are there any steps to take to debug this? Has anyone had experience with this type of an issue?
Thanks for your help,
Cory

I don't know if this is the issue, but I know the touchpad doesn't support OTG like the the Nexus does. I think you need a Y-adapter + OTG to provide power since the micro usb port doesn't give any power to the device you connect. Someone correct me if I'm wrong though.

Apparently even a powered USB requires a powered Y cable to be properly recognized. I hacked together a quick Y cable manually, by splicing in another USB cable's power and ground (Red and black) to the respective locations on a female USB cable. Works as expected.
I am now communicating with an Arduino over Serial
Thanks!

Read this thread, should give you all the info you need:
http://forum.xda-developers.com/showthread.php?t=1582771
Basically the Touchpad has OTG but it provides no power.

wcdolphin said:
Apparently even a powered USB requires a powered Y cable to be properly recognized. I hacked together a quick Y cable manually, by splicing in another USB cable's power and ground (Red and black) to the respective locations on a female USB cable. Works as expected.
I am now communicating with an Arduino over Serial
Thanks!
Click to expand...
Click to collapse
I'm curious if you are able to charge with this cable hack while using usb devices?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

ZedZardoz said:
I'm curious if you are able to charge with this cable hack while using usb devices?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
if so , he is the first of the many many many who has used this cable..HPTP just is not set up for charge + usb data at the same time

amkaos said:
if so , he is the first of the many many many who has used this cable..HPTP just is not set up for charge + usb data at the same time
Click to expand...
Click to collapse
Agreed. I think people just are not stating reality regarding the ability to charge and use OTG Hosting to USB devices at the same time.
My goal here has been to attach a flash drive with video/audio media and play & charge on long flights. It looks like play, charge are mutually exclusive on my beloved TouchPad.
I've asked for the specific confirmation of this from this YouTube but have never had the poster reply:
https://www.youtube.com/watch?v=p10LgZFIawo&feature=BFa&list=PLCED27D4A23068E04&index=7
There are devices out there that have very advanced micro USB device implementations. Sadly the HP is only superficially supportive.
I for one cannot wait to get my SGN2 smart dock which offers:
Charging
OTG (x3 USB)
Audio out
HML HDMI out
Docked Profile

[Q] OTG with USB hub instead of Y cable?

Hi friends,
I want to attach to my touchpad memory card reader and external hard drive.
I wonder if it will be possible instead of buying Y cable and connect it to the OTG, to use my existing USB hub and connect to him the devices and the external battery bank.
Will it work?
Thanks

avizov2 said:
Hi friends,
I want to attach to my touchpad memory card reader and external hard drive.
I wonder if it will be possible instead of buying Y cable and connect it to the OTG, to use my existing USB hub and connect to him the devices and the external battery bank.
Will it work?
Thanks
Click to expand...
Click to collapse
im assuming youre talking about doing this in android 4.0.x +. if so then yes you should be able to connect an externally powered usb hub to the OTG cable and connect more than one device at a time.

Thanks
haxin said:
im assuming youre talking about doing this in android 4.0.x +. if so then yes you should be able to connect an externally powered usb hub to the OTG cable and connect more than one device at a time.
Click to expand...
Click to collapse
Yes android 4.
to be precise, I don't have powered usb hub.
I have normal usb hub which I will connect him the power with usb battery bank device.
will it work?

avizov2 said:
Yes android 4.
to be precise, I don't have powered usb hub.
I have normal usb hub which I will connect him the power with usb battery bank device.
will it work?
Click to expand...
Click to collapse
Yes. You need to give power to the periphal usb devices. I tried the same yesterday, without problems.

Hey all
I have a powered Belkin USB hub (this one: http://www.belkin.com/us/F4U040-Belkin/p/P-F4U040), coupled with an OTG cable which I know work together, as my Kindle Fire recognizes all USB devices through this setup (Keyboard, Mouse, Flash Drive etc).
I was surprised to find that my HP touchpad does not recognize any devices connected to this hub.
I did some diagnostics with USB Device Utility, and the touchpad recognizes my USB OTG cable, as it shows as a 'Qualcomm On-Chip EHCI Host Controller'.
The touchpad simply does not see anything plugged into the hub, be it a keyboard, mouse or flash drive.
Please help me here, guys!
What am I doing wrong?
Thanks

MainCourse said:
Hey all
I have a powered Belkin USB hub (this one: http://www.belkin.com/us/F4U040-Belkin/p/P-F4U040), coupled with an OTG cable which I know work together, as my Kindle Fire recognizes all USB devices through this setup (Keyboard, Mouse, Flash Drive etc).
I was surprised to find that my HP touchpad does not recognize any devices connected to this hub.
I did some diagnostics with USB Device Utility, and the touchpad recognizes my USB OTG cable, as it shows as a 'Qualcomm On-Chip EHCI Host Controller'.
The touchpad simply does not see anything plugged into the hub, be it a keyboard, mouse or flash drive.
Please help me here, guys!
What am I doing wrong?
Thanks
Click to expand...
Click to collapse
Are you sure that's powered? The picture doesn't show any DC connectors. Is it powered by something like a mini USB to USB cable on the back? If so, that might not be enough to power the device and the peripherals attached to the ports.

Belkin Hub
Daistaar said:
Are you sure that's powered? The picture doesn't show any DC connectors. Is it powered by something like a mini USB to USB cable on the back? If so, that might not be enough to power the device and the peripherals attached to the ports.
Click to expand...
Click to collapse
The belkin does have an external dc power supply and is not powered via usb

I think you need a Y cable even with a powered hub as its purpose is to inject power back into the OTG chip in the Touchpad.

[Q] Force USB CarbonRom Nook HD+

Is it possible to force USB on CarbonRom B11? I have a female - female USB adapter, and I'm attempting to connect a keyboard to my Nook HD+, but I haven't been able to find an option to force USB.

RySean said:
Is it possible to force USB on CarbonRom B11? I have a female - female USB adapter, and I'm attempting to connect a keyboard to my Nook HD+, but I haven't been able to find an option to force USB.
Click to expand...
Click to collapse
On b11 I have an app called usb host switch. I haven't tried a keyboard as I have a bluetooth one but it does work for usb drives.

jpisini said:
On b11 I have an app called usb host switch. I haven't tried a keyboard as I have a bluetooth one but it does work for usb drives.
Click to expand...
Click to collapse
Cool, thanks, it worked! Now I'm going to get a hub so I can connect mouse and keyboard. And I'm going to get a hub that has DC in, so we'll see if it can also be charged at the same time.

Let us know if charging works that would be very helpful.
Sent from my Galaxy Nexus using xda app-developers app