Hello,
Does someone know how archos managed to block certain devices from the 3G usb port? I am studying the kernel source codes and the filesystems of several roms and a cannot find any references to some blocked devices. (Yes I am a expeienced C(++)/linux developer) Most devices do work on the OTG port.
Memory sticks seem to work but when i plugin a mouse of keyboard the folowing line appears in dmesg:
hub 1-0:1.0: Cannot enable port 1. Maybe the USB cable is bad?
What is different on the 3G Usb port?
Joris
Good question. I'm not a developer but I have had that happen on a few (older) USB drives as well. Surely it couldn't be and old usb1.0 standard or anything that isnt enabled?
I just figured that it was a power issue thumb drives use almost no power, I'm thinking that archos designed the 3g stick/port to provide power on the low end of USB spec 5v DC and 0.5-0.9 amps.
I'm just going to link to my other post HERE about a powered USB hub. has anyone use a external battery to charge tab and do you get fast or slow charge?
Related
Has anyone figured out if its possible to use the ExtUSB (sync) port as a USB host port? I'm guessing the communication lines could be controlled with software, but that you would have to use an externally powered USB hub (or devices that are externally powered) unless the +/- charge lines are 2-way.
techntrek said:
Has anyone figured out if its possible to use the ExtUSB (sync) port as a USB host port? I'm guessing the communication lines could be controlled with software, but that you would have to use an externally powered USB hub (or devices that are externally powered) unless the +/- charge lines are 2-way.
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I don'ty know the answer, but... what for? The X7500 has the cable to allow USB devices connect to the USB host... so? And for sure you will need a cable to convert mini USB to female regular USB... so is not a matter of money or carring a cable I guess.
Mostly techie curiosity. I figured since someone already figured out how to reroute internet sharing to make a wifi host, someone else must have looked at that normal-looking usb port and thought about making it work like a usb host. I'm a programmer but I don't have time to work on that...
techntrek said:
Mostly techie curiosity. I figured since someone already figured out how to reroute internet sharing to make a wifi host, someone else must have looked at that normal-looking usb port and thought about making it work like a usb host. I'm a programmer but I don't have time to work on that...
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unfortunatly the chip that does that feature is not capable of that.
if you look at the schematics of a root hub it has 1 main chip that is the hub controller, and slave chips for each of the ports. a device interface has a diffrent type of chip that's intended to be connected to a root hub connection port. thusly no software fix could be made too convert a port intended to be a connection point into a root hub port
mind you the 4-in 1 cabloe is cheap enough and i saw at least 1 site via google that had a usb port only cable for the sepcial connector
so is worth looking at that.
Hey - do you have the details of the company selling this 'usb only' cable?
Thanks for the input. Just curious if it could be done, I hadn't tried to look up the schematics. I second the request for the info on the usb-only cable, that would be perfect since they already gave us a vga cable...
Would this "USB cable" allow me to use a 149GB externally HDD caddy like I managed on my Dell x51v Axim's CF to USB slot, as the 4 in 1 cable isn't cutting it?
Thankz
There are lots of posts related to external HD and X7500... in general most of them (99'99%) don't work properly. In the webpages from HTC said that the 4-in-1 cable only admit mouse, keyboard and pen-drives.
hi:
i think i will try to get hptp from ebay.
i see that it doesnt have usb for flash drive..
assuming that if connected to a dongle, it will read/write to flash drives,
which adapter should i search for.. mini male (for tp) > usb (flashdrive)?
thanx
I have read a thread on the usb host mode for the TP (can't remember which of the 8 forums I am on) that the micro usb port WILL support host mode BUT you will need a "Y" cable to provide power at the same time. Do a search for "host mode " on the TP forums and check it out. I have not attempted it so far as I have not found the correct "Y" cable mentioned in the thread.
Sent from my Touchpad using Tapatalk
You can find infos here :
green said:
There is fully functional USB Host support, you don't even need to do any SW modification, everything is supported out of the box with one caveat, you need external power.
Support for keyboard, mice, harddrives and cameras is fully built in the default WebOS software.
I guess HP planned to sell their own USB attachments, iPad-style.
The only thing you need is USB OTG cable. Like this: http://www.ebay.com/itm/New-micro-U...781644?pt=PDA_Accessories&hash=item19c7d49acc
Basically just search for "USB OTG cable" on ebay, costs about $3. And USB Y-cable. The only two things you need are OTG microUSB cable and USB Y cable to provide external power.
I am still looking into possibility of self-powered usb host mode, with all the support HP built in for it it almost sounds like a given there must be a way to enable it one way or another. Unfortunately chipset documentation is almost nonexistent.
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well i got hptp today..
the ebay link USB OTG cable for was great..
the y cable search was confusing:: i do not know which kind to look for plus.. i dont see how to use this thing.. how does it get power.. i spose the USB OTG cable plugs into one of the "y" but im lost really...
i appreciate all responses..
thanx
What i've bought:
OTG: http://www.ebay.com/itm/Micro-USB-O...070399?pt=PDA_Accessories&hash=item3f0e501abf
USB Female to Female: http://www.ebay.com/itm/280732594049?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Y cable: http://www.ebay.com/itm/120626863147?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
External battery with USB: http://www.dealextreme.com/p/2400ma...a-cable-for-htc-desire-g5-samsung-i9000-57905
What i've got: unusable pile of crap. The whole system can power up a mouse or gamepad, or external HDD (which is need to be powered from wall socket in addition to TP) but it's much worse with anything else: 16gb flash stick - lights up, but not enough power to read data, USB card reader don't even lights up. And situation with powering from PC USB (instead of ext. battery) is the same.
Anyway, even if the whole system would work, i doubt that you would take all those cables with you wherever you go, so it's useless.
i watched the russian vid..
hassle w/ capital H
little to zero hope of this gonna ever work
thanx for replies
Hi!
It looks like it's possible to use some USB Ethernet adapters with some Android tablets, but is it possible to have it running on AC power at the same time?
I suppose that this can be achieved with some special OTG cable, if it is possible at all. Have anyone been successful with this?
Please share what's your setup, i.e what tablet do you have, what Ethernet adapter works with it, and what kind of OTG cable are you using.
Direct links (Amazon, eBay, etc...) are very welcome for Ethernet adapters and OTG cables.
Thanks in advance!
PS: Hopefully this is the right forum to post these type of questions.
Hi, I tried with a otg cable which had an additional port for power but it's just for when u use hdds who needs more power then 450 mA to run. Android is not allowing to charge the phone during USB otg usage.
I was just wondering about the compatability of the lg g5 with a usb hub in this way. I already have a usb hub(just an amazon basics one) and wanted to make a little media/gaming setup using an otg cable and miracasting it to my firestick. I don't know if it would be compatible with my controllers and pendrives etc. Or will i need a specific type c usb hub?
Ooops sorry for double post but i understand i may have posted this in the wrong section and it should have been in accessories. Not sure how to move it though. Sorry again.
well I think it might work but the hub needs to have additional power to do that
5V is needed to power it since the phone will not be able to power all mounted storage
I have a Ugreen HUB that I also recommend if you want to try it as it supports additional 5V power supply (http://www.aliexpress.com/item/Ugre...-LED-indicator-for-PC-Laptop/32526640882.html)
Thanks for the reply,
So the since the hub is bus powered you are saying the phone will not be able to power the mounted storage and say a gamepad or something? Is it that the phone is not capable of supplying it or that it will drain the phone quicker. For example if i had a usb otg cable that supplied input too the phone would it be possible?
If it is the case i should go for one of these hubs are there any you can recommend on amazon as I would rather not wait 2 or 3 months delivery?
If you plan on connecting gamepad, storage and so on at the same time, you will most likely lack enough power since the phone alone can not supply it therefor you will need additional power to the hub
So far the phone should be able to support powering a USB storage device (USB stick) but if you plan adding a external HDD for example, it will not work (I managed to test with a 1TB external HDD and was not able to fully power it)
As for a amazaon suggestion for a HUB, well not sure but you can try one that supports additional power supply (https://www.amazon.com/AmazonBasics-Port-2-5A-power-adapter/dp/B00DQFGH80)
Thanks very much for the reply i might purchasr that as well and see if there is a difference between using both. Anyone have any recommendations on type c otg cables?
My otg cable got delivered. And i used it with my current usb hub that was bus powered... It doesn't work reliably(it has worked once for me). I'm not sure why this is, I assume its because of the power. So if i was to buy a usb hub now that was powered such as the Ugreen 4 port usb hub will i see better results with that? Also anyone know the best gamepads i can buy for otg as i dont have a usb x360 or ps3 controller.
I was interested having a otg setup for my car, usb dac for audio, plus phone charging, but i dont think its possible to have otg + charging.
Even if you get otg working on a hub, chances are you wont be able to charge at the same time which is an issue for gaming?
Hi,
I have this tablet: http://en.senter.com.cn/products_detail/productId=183.html
It has this type of https://www.graperain.com/ARM-Embedded-MSM8916-System-On-Module/ SOM with MSM8916 CPU. Actual SOM inside the tablet has different marking on it but it looks exactly as the one in the picture. Dimensions are also the same. I googled a little bit and the SOM probably contains PM8916 power management IC. The board that SOM sits on contains ADP1612 boost converter that genereates 5 volts for OTG (at least I think so).
The tablet runs 5.1.1 Android (32 bit) with 3.10.49 kernel.
The problem is the tablet can't be charged while the USB is in OTG mode (I want to connect USB webcam to the tablet and at the same time to charge the tablet). This functionality is called accessory charging adaptor (ACA). I tried to connect OTG cable with 124 kohm resistor and to supply 5 volts for USB webcam externally but this way tablet doesn't enumerate the webcam.
Do you think ACA can be enabled in software? I don't need the tablet to generate 5 V for OTG, I can supply it externally. But I want it to enumerate the webcam and to charge from my external 5 V supply.
I extracted device tree that the tablet uses - http://gaminn.sweb.cz/dt.txt . Do you think it is possible to edit it in order to enable ACA?