Develop Bugs

Forcing GN to charge in pogo pin dock with USB OTG in use

I have the official Samsung desktop dock for the GN with pogo pins for charging. I cut out a notch in the left side of the dock so that I could access the USB port on the phone when it's docked. I'd hoped I could then attach a USB OTG cable and mount a flash drive while the phone charged via the pogo pins.
Unfortunately, the two functions seem to be mutually exclusive. If the phone is in the dock and charging and I attach the cable and flash drive, they are not recognized by the phone. Or, if I attach the cable and flash drive first and mount the flash drive before placing the phone in the dock, charging doesn't initiate when I put the phone in the dock.
Does anyone know if there is some way via software or hardware to force pogo pin charging while a flash drive is attached and mounted via a USB OTG cable?

I will try tomorrow on my self built car pogo charger and usb otg. I have aokp with the fast charge override feature.

subvertz said:
I will try tomorrow on my self built car pogo charger and usb otg. I have aokp with the fast charge override feature.
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Sounds great! Thanks much. If it works, it'll tempt me to go to AOKP myself.

Any luck on this?
I too want to use OTG functionality while charging phone in the official car dock.

USB OTG + charging
I'm actually trying to get the same get something like this going on a galaxy s2 (the I9100g with the omap processor) or a GN, My goal is to get usb host and charging going through the same cable. By making some changes in the kernel i've got the phone to think its in charging mode while in host mode, but if you check the battery status, it's still draining even though it says "charging" and I've got the a usb "Y" cable connected to a 5v 2amp power source.
I think cyanogenmod (there was a post on this here and a standalone app that eventually rolled into the latest cm7 nightly) has this working on a BN nook color (also TI-OMAP Processor), but I have not been able to verify this.
Does anybody have host+charing working on any device with an OMAP processor?

Sorry for the delay, I had an emergency work trip offshore on an oil rig. I can try it out tonight.

Results. Charging OTG killed pogo charging. I tried mounting in pogo charger with OTG already attached mounted with a basic thumb drive. Charging never started. I tried charging with pogo first, then plugging in OTG, charging stopped. I checked to make sure it was actually discharging by waiting for a few percent decrease.
Sorry, I was hoping it would work too.

subvertz said:
Results. Charging OTG killed pogo charging. I tried mounting in pogo charger with OTG already attached mounted with a basic thumb drive. Charging never started. I tried charging with pogo first, then plugging in OTG, charging stopped. I checked to make sure it was actually discharging by waiting for a few percent decrease.
Sorry, I was hoping it would work too.
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Click to collapse
Thanks for giving it a try. It would be interesting to know if this behavior is built into the hardware or could be modified via software/in the kernel. It's consistent with what happens when using a powered USB hub.
Other than a software mod, I'd sure like to see someone start making and selling an Accessory Charger Adapter as described in Chapter 6 of the USB Battery Charging Specification document from 2010. It's the exact thing needed to use USB OTG and charge at the same time.

Anyone knows if its possible to charge via USB, with a device connected?
I connect an adapter microUSB to USB OTG, than connect USB OTG in a USB HUB and than i connect a device in one USB and force in another, is it possible or not??

It may work, since connecting to the pc works.

[Q] AC Adapter acting as USB

I have noticed that the note 2 sometimes considers AC Adapter as USB.
Thus the charging output reduces.
Is someone else also facing the same issue? Is there a solution?

Nope, it won't act as USB. Basically AC only connect to + and -. And the data is left blank.
Out USB port in PC has 3 connected
Accidentally sent from my Samsung Galaxy Note 2

For me it does acts as USB sometimes.
I plugged the phone to USB port and then again to AC adapter.
The phone this time recognised the AC adapter and the charging output increased.

How are you measuring the charging output?

It happened to me once. Fixed it by unplugging then restarting the phone then it showed it as AC when I plugged it again. Don't know how it happens, but it seems a rare occurrence (for me at least).

i also feel that is why sometimes it keep charging slowly...anything to do with usb debugging enabled?

[Q] If I use a usb hub, can I attach an ethernet port, and have the device charging?

Title says it all, has anyone tried this?

From what I've read (and the other threads on this topic) - no it can't be done.

It can't be done my friend

I got it to work
psycho1200 said:
It can't be done my friend
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I used the following and plugged into my TV usb port and had ethernet (verfied with WIFI shut off) and it was charging.
USB 2.0 Ethernet adapter - <amazon.com/gp/product/B003VSTDFG>
OTG with power - <amazon.com/gp/product/B00C452XFO/>

Yup, this now works great for me too! :good:
I bought the Ethernet adapter Nvidia Recommends (same as browncoatdave's)
http://www.amazon.com/Plugable-Gigabit-Ethernet-Chromebook-Specific/dp/B003VSTDFG
And just whatever Y cable could find that didn't look uber cheap.
http://smile.amazon.com/gp/product/B00CXAC1ZW/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

What I have plugged into the shield
jjprichards said:
Title says it all, has anyone tried this?
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1) 3 Port USB Hub
2) Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Wired Network Adapter
3) Micro USB Host OTG Cable with Micro USB Power
4) Smart Touch Mini USB TouchPad Keyboard
5) Full Size trackball mouse
6) Charging cord
I am charging the battery with ethernet, keyboard and mouse plugged in.
No Problem. But this is also after the kitkat update which added the charging while ethernet is plugged in.

solidsn said:
1) 3 Port USB Hub
2) Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Wired Network Adapter
3) Micro USB Host OTG Cable with Micro USB Power
4) Smart Touch Mini USB TouchPad Keyboard
5) Full Size trackball mouse
6) Charging cord
I am charging the battery with ethernet, keyboard and mouse plugged in.
No Problem. But this is also after the kitkat update which added the charging while ethernet is plugged in.
Click to expand...
Click to collapse
trackball mouse, why? gives me flashbacks of the 90s...

solidsn said:
1) 3 Port USB Hub
2) Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Wired Network Adapter
3) Micro USB Host OTG Cable with Micro USB Power
4) Smart Touch Mini USB TouchPad Keyboard
5) Full Size trackball mouse
6) Charging cord
I am charging the battery with ethernet, keyboard and mouse plugged in.
No Problem. But this is also after the kitkat update which added the charging while ethernet is plugged in.
Click to expand...
Click to collapse
Did you plug all the devices in a particular order? I noticed that if I plug in my charger AFTER I plug in the OTG cable into the shield, then it is not charging. But when I plug in the charger into the OTG cable and then plug it into shield, it is charging.
Is your hub powered? What exact model is it? I am asking because I have very similar setup to yours but the shield does not detect USB devices connected to the hub - it's this one: http: // esperanza . pl/esperanza-usb-2-0-hub-4-porty-ea116,182,437.html
I can connect one usb device directly to OTG cable and it works, but when I connect a hub, it no longer works.

There is a cheap way to do this if you have the soldering skills, and are willing to try it.
Get a cheap USB "Travel" hub.
Open it up, and replace the Upstream USB cable with an OTG cable (A scrap Micro-USB cable may or may not work. The connector must be Properly wired for OTG).
Remove the main power diode in the USB hub, and solder jumper the 2 pads where it was. A Multimeter in continuity mode can help you find the right component, but it takes some experience. There usually is not much in a cheap travel hub, so I can usually find them just by looking, but like I say, only try this if you have the experience, and you know what you are looking for.
Power the hub through it's 5V power jack (if it has one), or you can add a power only micro-USB socket. (Only connect the (+) and (-) power pins, do not connect the data lines. Connect it to any one of the Full size USB port's power pins. Observe polarity.)
Voila! You now have 4 Full size USB ports, it will charge your device, and provide power (Up to the rated power of the AC adapter) for your USB devices.
I did this years ago in the Nokia 770 days. It was one of the first consumer devices that supported USB OTG. Article still exists here:
http://www.linuxslate.org/N770DockingStation.html (Scroll down to the "Electronic Components" Section)

Would this work?
Would this: SODIAL(R) Micro USB Host OTG Cable with Micro USB Power plus this: Anker® Unibody 3-Port USB 3.0 and Ethernet Hub
Give me the ability to charge tablet, use Ethernet and additionally connect USB mouse and keyboard, and possibly charge Nvidia Game Controller?
Or would it just be a waste of time and money

Phone stops charging as soon as PC is turned off

That's something new to me.
Before with my Galaxy S4 I could charge the phone easily when I turned my PC off. I have set in the BIOS the option that allows to power the USB ports while the PC is off for that. It worked perfectly for my S4 as well as my tablet. But somehow it doesn't work for HTC 10. As soon as I turn off the PC the phone stops charging. What's going on? Is the USB-C the reason that happens?
(I am using a xiaomi microUSB to usb-c adapter)

I'd assume that it's not getting enough power to charge the HTC 10 now.
Sent from my HTC 10 using Tapatalk

But is the power given to the USB port any different to when the PC is on? There is a setting in the BIOS to keep the USB ports powered on.
If the power given to the USB ports is the same when the PC is off and on then that shouldn't make any difference. Do you have any source that says the power (amps/volts) given to the usb ports when the computer is off is different?

Ok. I've did a bit of a testing and found out that if I turn off my computer while the htc 10 is connected then as long as the computer powers down the charging stops. But when I disconnect it and reconnect it the charging goes back. It might be that the "USB mode" is breaking the charging because when I attach the cable after the computer is powered down I get the notification that the charging is slower than usually which is fine and I know that will be the case (USB 2.0 gives only 500mA instead of 2A that the wall charger will give).
Boy, I wish I knew a way how to make this break when powering the computer down not occuring as it's a pain in the butt to have to reconnect it again.

Use USB-C On the go (OTG) and power charging simultaneously?

Hello out there.
Has anybody figured out a way to using a USB-C On the go (OTG) adapter for OTG functionality, and get power charging working simultaneously?
I have seen some people have had success using USB Y cables with micro-USB OTG, but haven't read anything confirming this works or is even required using USB-C compatible phones such as the Nexus 5x. I saw some Startech Y cables are available for purchase and some dodgy homebrew setups which I wouldn't attempt personally!
I have a USB-C OTG connector and a mains powered USB 3.1 hub. With this setup I can charge or use USB devices successfully on the phone, but it's one or the other, not at the same time. I'm forced to choose the USB charging option on the phone to switch between the two.
Any thoughts or experience on this using a Nexus 5x or similar? Cheers!

And sort of related - new Macbook can drive an external display over USB-C. Can Android / Nexus 5x?

I have also been looking for this - to allow always-on wired ethernet. Have not found a solution. My Nexus 5X will last for several days when the ethernet adapter is externally powered by a hub, however. The trick is to make sure nothing is running except essential comms and email when on standby. The new Marshmallow Developer mode allows this, by selecting most apps to be 'inactive' during standby and only allowing one app to run at a time. My phone runs for weeks at a time in standby when there are no ethernet connected and no WiFi/4G. Connecting wired ethernet cuts that to about 7 days, depending on email notification activity.

trevmar said:
I have also been looking for this - to allow always-on wired ethernet. Have not found a solution. My Nexus 5X will last for several days when the ethernet adapter is externally powered by a hub, however. The trick is to make sure nothing is running except essential comms and email when on standby. The new Marshmallow Developer mode allows this, by selecting most apps to be 'inactive' during standby and only allowing one app to run at a time. My phone runs for weeks at a time in standby when there are no ethernet connected and no WiFi/4G. Connecting wired ethernet cuts that to about 7 days, depending on email notification activity.
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Click to collapse
I'm on the same boat, needing to have a Nexus 5X connected via Ethernet and powered.
So far I've tried:
- a USB Type C to USB female OTG cable
- a USB Type C to microUSB adaptor via a Dell powered USB OTG cable and a powered Acasis OTG USB Hub
but I got the same behaviour:
- USB OTG works with Ethernet and no power
- USB C to USB OTB HUB/powered OTG adaptor = power, but no OTG functionality
Is there a an updated USB C OTG pin out diagram available ?
(Similar to this one ? http://forum.xda-developers.com/showthread.php?t=2303902)