[Q] Galaxy Note 4 - 7" / Will root allow USB host? - Galaxy Tab 4 Q&A, Help & Troubleshooting

Hi everyone, I bought the SM-T230NU while on holiday and just tried to use it with a USB to mirco-USB adapter, only to realize this tablet doesn't allow USB host !
I'miss a little pissed and after scanning through the XDA forum I'm still not certain whether the root will allow me to enable this function, could someone let me know if they've found a solution to this ?
I would just like to be able to read USB flash drives directly off of the the tablet, nothing complicated, I can'tell believe Samsung would forget this function on the 7" version but include it on the 8"!

DeLime said:
Hi everyone, I bought the SM-T230NU while on holidaya and just tried to use it with a USB to mirco-USB adapter, only to realize this tablet doesn't allow USB host !
I'miss a little posses and after scanning through the XDA forum I'm still not certain whether the root will allow me to enable this function, could someone let me know if they've found a solution to this ?
I would just like to be able to read USB flash drives directly off of the the tablet, nothing complicated, I can'tell believe Samsung would forget this function on the 7" version but include it on the 8"!
Click to expand...
Click to collapse
I just became a xda user, so just trying to help out by replying...
You've probably seen this thread by now, but lists details of how to detect USB host support.
http://forum.xda-developers.com/showthread.php?t=1493325
I don't think root will give access to USB OTG if it doesn't support this feature out-of-the-box.
It sounds like a kernel customization functionality which is not a simple solution that you are looking for.

In a round about way....
Persistent Root will allow custom recovery> will allow flash-able ROMS> Will allow custom kernals> Will allow OTG.
tab4 7 currently has the first two but no source for the second two. So currently, no OTG support.
I just purchased one (yesterday) due to size constraints, and its the cheapest(only) 7" tablet I could find that was less than 111mm wide. But my application that limits the size also requires OTG. So here's hoping that the most excellent and smart peoples of XDA can pull through for us.

Flashable ROMS for SM-T230NU ? are you talking of the flashable Stock Roms available on this Sub or some other custom Rom I'm not aware of yet?

No, it seems that the poor tab 4 7" has both a root and custom recovery, but alas, no flash-able roms or custom kernels. And I've all but given up hope that there will ever be any forward progress on this device. Seems that when knowledgeable (in this area) people find out the hardware in the 7" they just return it for the 8". I have a space limitation that very specifically necessitated the use of the tab 4 7" so I bought it and used it in the hopes that there will be development for it in the future. Doesn't look like there is hope that will ever happen. Mostly I just need OTG + Charging ability.
Maybe when prices get low enough for the 7" I will just buy one and send it to a well known developer to see if he can do anything with it. Still, even then, if there's no way to do anything with it...

Related

[Q] a little housekeeping a500 q's

Hello all
Just bought one of these off the net for the missus so ill be active around these threads as well. Personally i have a xoom this will be like my second to flash the heck out of lol but as I've been reading about these i have a couple small questions
1. Is the sd card working on stock rom so i can flash customs or will an update to 3.1 be required like the xoom?
2. Does the usb port work as host out of the box?
3. Whats the general stable oc you guys are achieving?
I have tried to search these but some are hazy on the specs or they are outdated
Cheers
Sent from my mind control device
joshndroid said:
Hello all
Just bought one of these off the net for the missus so ill be active around these threads as well. Personally i have a xoom this will be like my second to flash the heck out of lol but as I've been reading about these i have a couple small questions
1. Is the sd card working on stock rom so i can flash customs or will an update to 3.1 be required like the xoom?
2. Does the usb port work as host out of the box?
3. Whats the general stable oc you guys are achieving?
I have tried to search these but some are hazy on the specs or they are outdated
Cheers
Sent from my mind control device
Click to expand...
Click to collapse
Fastest claimed speed is 1.64ghz, stable closer to 1.5.
SD card does work on stock, actually is required for flashing. As yet you can't flash from on board only external.
USB seems to work for some devices not others depending on whether you use the full size USB or the mini. Look on the market for USB mount all, you do need fat32 not ntfs though
Anyone want to contradict any of this?
Cheers mate thats good to hear except for the host feature thats the whole point hoppwfulky i get a good one
Sent from my mind control device
Yes USB host [the fullsize USB not the mini] works out of the box. If your USB device requires power though - like some external HDD's - it may not work as there might not be enough power draw.
The mini USB is for the connection to your computer and SDK/ADB/general File transfer use - along side the Acer USB driver install [so make sure you've got the Acer USB driver installed on the computer(s) you plan on using to push files to the tab though mini-USB].
gammaRascal said:
Yes USB host [the fullsize USB not the mini] works out of the box. If your USB device requires power though - like some external HDD's - it may not work as there might not be enough power draw.
The mini USB is for the connection to your computer and SDK/ADB/general File transfer use - along side the Acer USB driver install [so make sure you've got the Acer USB driver installed on the computer(s) you plan on using to push files to the tab though mini-USB].
Click to expand...
Click to collapse
Yeh as i said im well advised due my xoom on rooting and android adb, drivers (not being a know it all smart azz) just those couple q got me thinking.. Thanks for a second opinion seems very similar to xoom. Shame how host cant produce 5v at 500ma it wouldnt be to hard for them to up the lousy 3.7v it seems they are running now
Sent from my mind control device
eglathangion said:
Fastest claimed speed is 1.64ghz, stable closer to 1.5.
SD card does work on stock, actually is required for flashing. As yet you can't flash from on board only external.
USB seems to work for some devices not others depending on whether you use the full size USB or the mini. Look on the market for USB mount all, you do need fat32 not ntfs though
Anyone want to contradict any of this?
Click to expand...
Click to collapse
You can use internal for flashing if you're using thors latest recovery.
sent through a series of pipes and tubes

[REQ] implement USB Host APIs in KI/KJ firmware

Hello everyone,
I have nothing even close to development knowledge, so I have no idea if and how this can be done. Seeing what you guys cook together here though, I am quite sure that what I request should be possible.
As most of you will know, Samsung has removed the USB Host APIs from it's newer firmwares. No one kows why, but a lot of SGS2 owners, including me, dearly miss that feature. (I need it for chainfires DSLR controller)
I love to flash the newest firmwares, am eager to see whats new, and want the improvements they bring. So what I'm asking for, is for someone to "extract" that usb host-functionality from older firmwares and put it in a (cwm flashable ?) package that enables the funktionality for any firmware.
Since our hardware supports it natively it should only be question of software/kernel, right? Would love to see this happening... would hate to flash back to an old firmware.
Any help welcome! Would buy people bringing a solution a beer! cheers
works fine for me on KI3...? I use the usb host function often to transfer photos to a usb for work..
rbimdxe said:
works fine for me on KI3...? I use the usb host function often to transfer photos to a usb for work..
Click to expand...
Click to collapse
I don't really know how it works, but there seem to be different functioanlities. The new firmwares still are usb host enabled, which means you can still connect thumb drives, etc.. though as chainfire states here: http://www.chainfire.eu/articles/103/_SGS2_KI_Samsung_removes_USB_host_support_patches_bootloaders/ 3rd party aplications have been blocked from making use of this functionality.
no one?
...well I guess if it could be easily done chainfire would already be on it. please let me know if anything comes up!
there is a thread concerning this in the epic 4G forums. seems like they don't get usb otg at all, which is why that problem generates some more interest over there. chainfire himself contributes to their discussion. for everybody interested, let's follow what's going on over there. if they find a solution i'm sure we can apply it to the gs2.
http://forum.xda-developers.com/showthread.php?t=1265221

[Q] externally powered wifi adapter via otg for Backtrack

Greetings! I've been lurking on XDA for quite some time, and first I would like to give a big thank you to all the developers. I would never have purchased a Kindle Fire if I didn't have faith in your ability to unlock the hardware's true potential. You guys/gals rock.
Here's my question: I develop and troubleshoot municipal and commercial wired/wireless networks and I would really like to be able to use the KF with backtrack. I understand that OTG support under ICS is very close to being a reality, would it be possible to support an external wifi adapter via OTG?
Drawing power is the first problem that comes to mind, so my thought is to mod a USB OTG adapter to draw from an external DC source instead of the KF.
This could have some awesome potential if it could work. I'm willing to do whatever I can to make this happen, so if one of you veteran developers could set me on the right track to backtrack it would be greatly appreciated.
I'm no wifi/kernel expert but as far as i have understood it:
It should be possible if you get the right wifi modules to work. Android uses a modified wpa_supplicant, so even if you have linux wifi drivers for usb you would need to patch them to get it running. The current kernel does not have mac80211/cfg80211 modules compiled it, but i think that you probably would need them (i think they are in the kernel source, they are just not set yet). The current module for the tiwlan is proprietary and is also uses some strange ibCustomWifi as wrapper around WEXT, not sure if they also did some changes there.
If the 3.0 kernel boots we should anyhow change to a mac80211 wifi driver and also use wpa_supplicant 0.8 instead of 0.6 so your chances should be a lot better with the 3.0 kernel.
So it strongly depends if your external wifi adapter is very well supported for linux (or better for Android ....) und if we get otg running. (There might be some hidden problems to discover).
Sengwall,
There are several threads in the xda forums for similar projects on different devices that might be useful as the steps are basically the same (assuming that somebody gets OTG working). Here's one of them:
http://forum.xda-developers.com/showthread.php?t=1484339
Thanks for the input...ill look and see if there has been success on other devices with the same board.... great suggestion.

OTG cable issue

Hello
I have the following issue. I bought an otg cable and it was able to mount my flash and mouse the first two times. Since then, it only gives a kick start and both my mouse and flash drive are powered down after 3 seconds. I tried them separately. To summarise the problem my nexus 7 does not give enough power to its microusb to be efficiently running an external device or the software recognizes it improperly and shuts it down.The cable works, since its been tried on 2 other devices. Now I wasn't able to find a proper solution to the problem so I'm asking if someone's dealt with such an issue. Running a rooted stock android 4.2.1
Sent from my Nexus 7 using xda app-developers app
You didn't mention which app you are using to be able to mount external storage. It requires Nexus Media Importer (paid app, read/stream only) or the free Stickmount (requires root, provides read/write/streaming). A mouse or keyboard will work without root or either app, but mounting storage requires an external app or a custom kernel with built-in support.
I am using stickmount, and I'm sure it would do its job if I get the devices power for more than 3 seconds
Sent from my Nexus 7 using xda app-developers app
Any new ideas, perhaps a custom kernel ? Any recommendations
Have you tried to see what the app "USB Host Diagnostics" tells you when you try to mount?
It's from the same maker as stickymount, maybe that will give you some better insight at what's happening.
I would include a link but since I'm new on this forum it won't let me yet.
rockhopperpenguin said:
Have you tried to see what the app "USB Host Diagnostics" tells you when you try to mount?
It's from the same maker as stickymount, maybe that will give you some better insight at what's happening.
I would include a link but since I'm new on this forum it won't let me yet.
Click to expand...
Click to collapse
Hello there, yes I have tried it several times, but it could not discover any attached devices, since, as mentioned, the power to the external devices is cut off 3 seconds after the physical insertion. Said devices aren't powered, that's what bugs me. If somehow electricity reaches them, I would be somewhat relieved since the problem would apparently be from the os or software. Right now I cannot get power to the devices, that's why I cannot do any diagnostics. Any ideas on why that might be ?
I would try another OTG-usb cable. Perhaps yours is just enough out of spec it worked at first, but now fails, or it may have been damaged after the first uses. Maybe static shock or it got bent or something. I got one through Amazon delivered to me from Hong Kong for 65 cents (including shipping). It took 17 days to receive, but it works great. I don't know how they can make any money like that, but I'm happy.

[Q] Nexus 7 as display for TV dongle possible?

Hello everyone,
I am attempting to set up a Tronsmart MK908II TV dongle as a portable sandbox and web development environment. For my first attempt I'm using the stock ROM and apps from the app store such as Bit Web Server and Terminal IDE. I've had a fair amount of success, though very tempted to install Pi****u (Ubuntu) for a more powerful environment.
One of my main objectives have a miniature HD monitor so I can have direct access to the device if necessary even when I'm on the go. Before I go out and buy a suitable device for this, I'm trying to get my Nexus 7 to act as the display, since I will always have it with me and it's the perfect size. I believe I may have all the necessary cables and converters to make something like this possible... I'm just a bit stuck at the moment on getting it all to work as I want and I suspect its a software/config/capabilities limitation more than a physical one. I have already attempted this a couple of different ways, including using a USB cable from the dongle and an OTG converter for my Nexus 7, but could not get the Android USB Serial Monitor Lite app to recognize input from the dongle.
Does anyone know of any tools or knowledge that might help me achieve this? I can probably find an app that will allow me to remote control my dongle from my Nexus, which is plan B, but it's far less desirable since there are some circumstances that a purely software solution might not work from the dongle end.
Thank you for your time!
Tennyson Hull

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