[Q] maintain / stablize usb otg voltage - Nexus 7 (2013) Q&A

Hello,
Would like to thanks in advanced for anyone who replies with any relevant concrete info.
Since i got my tp-24g01 wireless touchpad keyboard in Japan back in 2009ish, i love it. its a 2.4ghz wireless keyboard kick ass keyboard. anyway it works flawlessly on otg with htc m8, pc, ps4 but not on n7.
I have nexus 7 flo 2013 wifi 16gb with cm12 of may 30 2015 with elementalx kernel for cm.
i cant really blame cm12 rom for being worse than stock in this case, let me explain,
out of the box stock rom and then even updating it from android v5 to 5.1 the keyboard would be recognized by the device but after a few seconds it would start to stutter and eventually i would have to plug in and back every FEW seconds. --- why me right --- i guess people like to use bluetooth and i could buy a bluetooth keyboard, however my hands are totally used to the layout and width of this keyboard, plus i like how it looks.
---- thus the reason why i changed to cm12 with elementalx kernel ---
it was worse, the rom would would not even recognize the keyboard. i pretty much downloaded all the usb otg helpers on play store, somehow i end up searching for s3c usb host drivers for android, and with that i was finally able to use the keyboard, it works better, but still it timesout.
ive read on xda that nexus sometimes requires extra electricy current for some things to work. this is where my question comes in..
is there way to stablize, regulat by force the output voltage so that it doesnt time out.
im an afficiando for all this stuff so i cant really be 100% certain,
however, i do believe its some kind fo voltage issue because ive used my m8 with the keyboard i n the same spots and it doesnt time out. when i download something it drops hard.
anyone know of solution for this
is it possible to force regulate or increase the power the nexus give to the otg?
any rom or kernel that has this fixed?
i would even appreciate key terms to search because i have burned out of ideas
Update
Been reading a lot
This device is really bad for hardware
Without using stickmount and otg power lock
Transfer speed to otg USB was 1.3mb/s and times out after 15 minutes ::: hate this device :::
With I get 4mb/s and the file transfered before 15 minutes so I don't know of would have timed out
Not to mention I had to boot it up connected to the otg
Makes Total sense that my wireless keyboard timed out
I'm still hoping for some software solution to this but I know it that will most be unlikely.
Have big expectations for the HTC version as I love that company
Final solution order y otg cable or powered hub and Bluetooth keyboard for when I travel.
MasalaMa

its me again
have some news.
Although it seems tht the nexus otg does not have the same type of support as my htc m8
the initial root cause of my problem
when i flashed elementalx kernel i selected otg usb charge, duh, it was a no brainer why the otg wouldnt mount my keyboard
however the sc3 usb host anroid drivers did help to fix this unnecessary problem
after having freshly flashed cm12 again the keyboard is recoginzed but the same problem persists as it did with stock rom. problem still there after trying to juice it up with the elementalx kernel by boosting cpu clocking and perhaps will start testing other kernels for other i/o scheduling and governors
any tips? recomendations?
i also installed OTG power lock which to some extent may have helped but im still getting the same issues. it seems that with this app helps a bit, however still insignificant.
might have to ge really technical

Related

[Q] HELP - AOKP B30 Can't mount device to computer.

Hey guys!
Last night i installed B30 of AOKP to my phone via CWM and now my phone will not mount to my computer. I cannot install a different rom as i cannot place it on my intSD. Has anyone suffered this problem and/or has a solution?
Thanks for your time,
Steve
Are you using fast USB charge?
Sent from my francoPhone
I'm not no. Or i haven't enabled it. Where would i find it?
Thanks for the quick reply btw.
No it's not
What kind of computer? Windows,its a driver thing, if its Mac u need android file transfer which is a nifty application u can find for free.
Edit: Try a different USB slot btw
Sent from my francoPhone
Settings>storage>menu dots>mtp
Sent from my Galaxy Nexus using Tapatalk
I have the same issue. MTP is selected, but I don't get any signal from windows that a USB device is connected. It's like plugging it in the usb wall charger, all it does is charge it. If it is the fast charge usb, how do you disable it?
---------- Post added at 01:46 AM ---------- Previous post was at 01:28 AM ----------
Ok, the Galaxy S II looks to have the same issue.
http://forum.xda-developers.com/showthread.php?t=1555266
mnirocky said:
Hey guys!
Last night i installed B30 of AOKP to my phone via CWM and now my phone will not mount to my computer. I cannot install a different rom as i cannot place it on my intSD. Has anyone suffered this problem and/or has a solution?
Thanks for your time,
Steve
Click to expand...
Click to collapse
I noticed this problem when I had fast charge enabled on this rom.. I rectified the issue by disabling the fast charge present in AOKP B30..
Navigate to Rom control and click performance tweaks. You should see a checkbox to disable fast charge there.
Restart your phone after disabling it for the changes to take effect..
After disabling and rebooting your phone, the usb should mount to your computer properly..
darll said:
I noticed this problem when I had fast charge enabled on this rom.. I rectified the issue by disabling the fast charge present in AOKP B30..
Navigate to Rom control and click performance tweaks. You should see a checkbox to disable fast charge there.
Restart your phone after disabling it for the changes to take effect..
After disabling and rebooting your phone, the usb should mount to your computer properly..
Click to expand...
Click to collapse
Well the mtp fixed it. Guess I should have looked into that first. My bad, thanks for the help guys! Now if only I did not keep getting "System UI has stopped" at random times on aokp...
I've tried changing it from MTP to PTP and turning after switching between the two. I've tried two different roms, one based on 4.0.4 and 4.0.3. I've Tried several different USB cables, including the ones that came with my G2x and Nexus One. I've tried it in a USB 3.0 Port. I've tried using different kernals. Even when I get into recovery, windows still doesn't read somthing is attached. I've been transfering ROMS to it via dropbox. I don't think it's a rom issue as it should still show up in windows when in recovery. Also on those roms I made sure that they didn't have "USB Fast Charge" enabled, as I heard that can cause the issue I'm experience. Thinking it was an issue with CWM, I downgraded it, but still no USB. I'm stuck here. Any help is greatly appreciated.
Their IS a fix for this, but we need the code to get into the PhoneUtil menu and turn USB back on.
It's an issue with Samsung phones apparently, and here's a fix someone found a while ago.
http://blog.vacs.fr/index.php?post/...ot-detected-problem-on-Android-Samsung-phones
We just need the PhoneUtil code for the Galaxy Nexus and we should be all set.
It's a HARDWARE ISSUE with the latest batch of GNexs.
My issue is definitely hardware. I sent my GNex back and they sent me back a new one which I received yesterday. I checked and this one wasn't previously rooted or Unlocked. It worked for a day (worked as in windows saw it and I could xfer music/books/comics to it) after I get home from work Windows stopped recognizing it. I did NOTHING to the phone, it just stopped being seen by windows. I only used the cable that came with it and charged it the night before using the supplied adapter, but the USB still stopped working. Last resort I did a system restore to the phone and the USB still doesn't show up in anything ,Tried 5 of my Windows PC's A bunch of PC's at work, my friends Mac, my Ubuntu powered Netbook, my Xbox360 and PS3, even the Transformer Prime using the keyboard dock. This is telling me it's a hardware issue with the Device. Might be somthing wrong with the latest batch of GNex's but the USB seems to give out. Even if I put the phone in ODIN mode NOTHING recognizes it. So, before you all waste your time finding a fix, this is 100% absolutly a hardware issue with these phones, I don't know why, but I had Two bad ones in a row, and am Hoping my 3rd isn't borked too.
I have a bad history with Android phones....My first Nexus One wouldn't stay on, so I got a replacement from HTC. My first two G2x's would constantly reboot, It wasn't until the 3rd one that I got a working one. Now I'm hoping I don't have to go through 4 bad Galaxy Nexus' before getting one that actually works!
I have the opposite luck with tablets....the Novo7, Iconia A100 and Transformer Prime have been perfect outa box. This ordeal with android phones makes me seriously consider exchanging the GNex for an iPhone4s....but the iPhone4s screen is SOOOOO tiny!!!

[Q] OTG Charge + USB Host Plug and Unplug Timur Alternative

Hello all,
I have a nexus 7 2013 and I am looking for a kernel that supports otg plus charge. Now, I know elemental x (by flar2) and a few others have this but the ones I have found do not support hot swap, or unplug and replug without rebooting. I am pretty sure Timurs kernel supports this but he wants $36 to buy it and I would rather not spend the money without trying it out first. Specifically, I have a fixed in-car installation and a febon100 UVC video grabber to display a backup camera. When the car shuts off, the febon will be disconnected from the usb side of the nexus, and the only way to reconnect it is to reboot the tablet with power connected. Anyone have any ideas? Thanks for the help.
Ok so I figured part of it out. After the device looses and regains power, these two commands simulate the usb disconnect and reconnect and seems to work (only tried it a couple times)...
Code:
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/unbind
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/bind
However, I have another issue. I am using the elementalx kernel on android 4.4.4 (currently on Carbon rom but have tried stock and other roms as well with same outcome). When the tablet reboots with the otg cable connected, it does not charge when it first starts up. To charge it, I have to physically unplug and replug the cord in the nexus. Any ideas?
bigc9731 said:
Ok so I figured part of it out. After the device looses and regains power, these two commands simulate the usb disconnect and reconnect and seems to work (only tried it a couple times)...
Code:
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/unbind
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/bind
However, I have another issue. I am using the elementalx kernel on android 4.4.4 (currently on Carbon rom but have tried stock and other roms as well with same outcome). When the tablet reboots with the otg cable connected, it does not charge when it first starts up. To charge it, I have to physically unplug and replug the cord in the nexus. Any ideas?
Click to expand...
Click to collapse
you find a fix for this? i will try that command you posted but i need it to run at startup automatically if it works.
quicksilvr2006 said:
you find a fix for this? i will try that command you posted but i need it to run at startup automatically if it works.
Click to expand...
Click to collapse
Just use tasker to run the commands at startup...
Does this set of command still work with lollipop? I just tried a few times and it seems to have made no difference.
Thanks in advance!
Yeah im in the same boat. Soooooo many problems with this ****ty tablet. Knew i should have installed an iPad. They said this is the 'best' of android. It's ****ing terrible. People who are thinking of installing an android into your car? A word of advise. Dont do it.
-guy who has worked on nexus 7 2012, AND 2013 car install for more than a year.
jimmng said:
Yeah im in the same boat. Soooooo many problems with this ****ty tablet. Knew i should have installed an iPad. They said this is the 'best' of android. It's ****ing terrible. People who are thinking of installing an android into your car? A word of advise. Dont do it.
-guy who has worked on nexus 7 2012, AND 2013 car install for more than a year.
Click to expand...
Click to collapse
Do you feel better now?
Sent from my LG-D850 using XDA Free mobile app
It's been almost a year any way to accomplish charging without having to physically unplug the OTG and plug it back in. Im have timurs kernel but I want to use elemental so I can use marshmallow. Timur accomplished it somehow. Someone has to know how.
Qi Wireless Charging
samt3 said:
It's been almost a year any way to accomplish charging without having to physically unplug the OTG and plug it back in.
Click to expand...
Click to collapse
It is actually trivially easy to accomplish - on any kernel - it is called Qi Wireless Charging.
Android 6.0.1 kernel Quanta-V7-Flo with 'USB Host Mode Charging'
samt3 said:
It's been almost a year any way to accomplish charging without having to physically unplug the OTG and plug it back in. Im have timurs kernel but I want to use elemental so I can use marshmallow. Timur accomplished it somehow. Someone has to know how.
Click to expand...
Click to collapse
Test results for Android 6.0.1 Stock + Kernel 'Quanta-V7-Flo' with active 'USB Host Mode Charging' and inactive 'fast charging' (N7 is only is use when its connected to the USB Power):
Ampere values checked with one of the cheap 'USB Charger Doctor Voltage Current Meter Mobile Battery Tester':
0.45 A for N7 only
0.61 A for N7 + USB Ethernet adapter
I don't use the N7 in a car setup but this should be important for such setups:
-If the USB Y cable is connected before powering on the N7, the USB device was usable in Android after startup without need for reconnecting the USB cable
-If the USB was unplugged and reconnected the device, it was usable in Android
-Important: If the N7 goes to sleep, it can't recover the USB charging and USB devices after waking. You should set the display timeout to always on, which is right for a car setup or am I'm wrong?
I'm happy! :good:
I tried quanta. It does work except for on initial boot. Have to unplug and plug it back in to charge. Then it works fine turning the key on and off for power. However it doesn't mount the OTG devices again without unplugging it and plugging it back in.
Edit: I also have another problem was at work and didn't have time to add it. But my Nexus thinks it's still charging after disconnecting it from power supply through the OTG cable. When I turn the key off it quits charging for about 1 second then switch's back to saying it's charging again and continues to say it's charging even after cycling the key on and off. Only way to fix it is to disconnect the OTG straight from the tablet and plug it back in or boot it into recovery then back to system. Has done this thru multiple roms and kernels. Only kernel it doesn't do it on is Quanta. The thing is it didn't use to do it at all no matter what rom or kernel I was using. I even went as far as to change the charging port board cause I had another one in a old junk Nexus I have and still didn't fix it.
samt3 said:
I tried quanta. It does work except for on initial boot. Have to unplug and plug it back in to charge. Then it works fine turning the key on and off for power. However it doesn't mount the OTG devices again without unplugging it and plugging it back in.
Edit: I also have another problem was at work and didn't have time to add it. But my Nexus thinks it's still charging after disconnecting it from power supply through the OTG cable. When I turn the key off it quits charging for about 1 second then switch's back to saying it's charging again and continues to say it's charging even after cycling the key on and off. Only way to fix it is to disconnect the OTG straight from the tablet and plug it back in or boot it into recovery then back to system. Has done this thru multiple roms and kernels. Only kernel it doesn't do it on is Quanta. The thing is it didn't use to do it at all no matter what rom or kernel I was using. I even went as far as to change the charging port board cause I had another one in a old junk Nexus I have and still didn't fix it.
Click to expand...
Click to collapse
Did you try the glitch kernel?
0xcafebabe said:
Did you try the glitch kernel?
Click to expand...
Click to collapse
I've used it before but not on my current setup.
Assuming one of these kernels provides OTG + Fast Charging, what are the options for the Power-Down + Deep Sleep, then Power-Up + Wake?

how do I get otg 100% of the time

on CM 12.1 and I can get SOME flashdrive to work otg, SOME of the time.
I tried stickmount and ex kernel, but it's the same (worst on ex kernel, can't even detect otg)
I tried using a powered usb hub to see if that was the issue (for some reason, the microusb port isn't giving power to the drive. is this normal?)
after several more testing, seems like there are 2 issues that is causing otg not to work all the time.
1. Power. Doesn't seem to be able to provide enough power for self powered usb devices (ie. flash drive, dac, etc..) or enough to maintain connection.
2. Microusb port. might be one of the reason why devices aren't getting enough power and/or not being detected.
I really think it's a power issue cause everything seems to run fine if I connect it to an external powered usb hub. I tried the same setup (flash drive and dac to an usb hub, no power) with my 1st gen Nexus 7 and it had zero issues.
so is there a way to raise or maintain 5v OUTPUT out the microusb port so it doesn't randomly disconnect otg devices?
I've been able to power A pretty heavy duty usb audio interface. I think I may have had that issue A couple times, but it was never A big deal for me.
I don't remember having the problem after enabling "OTG+Charging" in Elemental X kernels' aroma installer. Did you use that?
Also possibly (not likely) A Cyanogenmod issue. I haven't used that on the nexus 7 in A while though.
Wierd that flash drives don't stay on. Does it do that frequently? I've looked into "overvolting" the usb port A long time ago, it seemed to need A kernel change

Carperformance.se Uconnect Android system help.

I am hoping I can find some help in here with a couple problems I am running into on this system that would make it so much better to me.
The system is basically an Android box utilizing the touch screen and monitor of my Uconnect 8.4 head unit. The naming in the settings is rk3188 and is running on KitKat 4.4.4, so it is some variant of the Android TV boxes. If there are other specs or info that are needed to help in possibly fixing my issues please let me know.
Issue 1: although not major, there is no option to have OK Google from any screen. Having this option for a car system is obviously something helpful. In the settings of the Google App trying to access the menu for OK Google detection doesn't work, so I can't even get to the screen where that option lives. I have the most up to date version of Google App and Google Play Services. I have Google searched on ways to fix this but nothing has brought that ability up. I know Android version 4.4.4 was capable of this. There was another app that utilized Googles voice engine and allowed this function but Google made him stop using their servers and killed that as an option.
Issue 2: this is the biggest bother to me and I could not find anything even related to what's happening in my searches. The system comes loaded with some apps and using Launcher3 for its front end, it has big buttons but offers almost no ability to customize it. The bottom row has apps that you cannot switch out to anything else, and 3 of them I will never be using. The system works but is not as nice as it could look or function. The obvious answer is to use a different launcher which is where the problem arises. I have tried to use Nova and Apex so far with the same very frustrating outcome. After the install everything is great, I can set the screen up to look amazing and add icons and functionality that really make it a great experience. So everything is working lovely then I shut my truck off and go do whatever. The next time I come back I start the truck up everything loads fine, the new launcher and everything I did to it is working just as expected until about 5 minutes in the screen goes black for a second and then the system goes through a factory reset. Really? Are you kidding me? The first couple times I thought maybe I hit something because I hadn't fully put my truck back together but after playing with it more and having the system factory reset 5 other times I have concluded it is related to changing the launcher. I tried Nova first, then I tried Apex with the same outcome and same sequence of events. Obviously it's annoying everytime testing this because updating and reentering my info everytime just to try the launcher again is time consuming. The last test the only thing I did was a different launcher so that has to be it, but why and how can I fix it?
If anyone has any clue how using a different launcher would cause a factory reset to happen please help me out. Or if there is anything I can do to this system to prevent that. My last resort thought would be to root it but I read someone else who has this system that rooting it caused screen layout issues and made things go 90 degrees off? The loaded apps in the system have touch screen calibration and screen resizing which might be necessary for this to function with the monitor.
Thanks for any help.
I spoke with someone else that has the system and they are not having any issues with running a different launcher so something happen to my particular device. I contacted the company and they will be getting me the firmware to refresh it and hopefully that fixes the resetting issue.
i am looking to get this also. I am very curious how you like the device - it looks great though a bit out of date. Waze & email should work well. How much storage does it have? Can you add a sd card or something?
RichTJ99 said:
i am looking to get this also. I am very curious how you like the device - it looks great though a bit out of date. Waze & email should work well. How much storage does it have? Can you add a sd card or something?
Click to expand...
Click to collapse
I'm getting a new unit sent out, it seems there are 2 versions and for whatever reason mine wouldn't let me customize the launcher.
But even though it's outdated, every app I tried worked just fine, they still install the latest versions. The system has 8gb of on board storage and a microSD card slot that is mainly for loading maps for offline navigation. I think you can still access it for other uses, but they have a better option for that. There is a USB input for flash drives or external drives. I tried my 2TB external drive on it and it accessed my movies fine from it.
How did you get it installed? Who?
got any pics?
Actually I would be interested in this too, I have an Alfa Romeo and the Uconnect 6.5 (european version) which isn't that great, it would be nice to attach a sort of box with ARM hardware running on Android and using the display and touch of the existing Uconnect. The question is, how this can be done?
http://www.dodgedurango.net/forums/.../24632-android-phone-uconnect-8-4-screen.html
I would check out this thread. It has two videos that walk you through the entire process - great info!
I also bought this latest Android system V4 2 weeks ago. Auto launcher pro app is very good working. At the moment there is a issue with the system time, which is not correctly synchronized with gps time. Carperformance Team is working on a fix for that. How can I get root Access for this Android 7 System?
Diabollon said:
I also bought this latest Android system V4 2 weeks ago. Auto launcher pro app is very good working. At the moment there is a issue with the system time, which is not correctly synchronized with gps time. Carperformance Team is working on a fix for that. How can I get root Access for this Android 7 System?
Click to expand...
Click to collapse
glad to hear i'm not going crazy with the clock but there is an issue.
I just bought and installed a V4 a couple weeks back too.
i must have left a loose connection cause i keep having to recall the touchscreen for android. I half-arsed the install cause we were leaving for a 2k mile roadtrip the next day- need to take it apart and do it right. Luckily you can connect a usb mouse in to trigger the calibration app.
id also love root- at the moment im trying to figure out if the one usb port is safe to connect an A to A usb cable into to get ADB. apparently on some versions of nvida sheild, you can. If they provide a firmware update for the clock fix then maybe that gets us an image to futz with for root.
a keyboard also works in teh usb port and i've tried a handful of key combos during boot to get to recovery but haven't stumbled on it yet.
I'll post back if i find anything
michaelk said:
glad to hear i'm not going crazy with the clock but there is an issue.
I just bought and installed a V4 a couple weeks back too.
i must have left a loose connection cause i keep having to recall the touchscreen for android. I half-arsed the install cause we were leaving for a 2k mile roadtrip the next day- need to take it apart and do it right. Luckily you can connect a usb mouse in to trigger the calibration app.
id also love root- at the moment im trying to figure out if the one usb port is safe to connect an A to A usb cable into to get ADB. apparently on some versions of nvida sheild, you can. If they provide a firmware update for the clock fix then maybe that gets us an image to futz with for root.
a keyboard also works in teh usb port and i've tried a handful of key combos during boot to get to recovery but haven't stumbled on it yet.
I'll post back if i find anything
Click to expand...
Click to collapse
Hi @michaelk
Good to hear that I am not alone here with this special system V4. Except for the issue with the system time and no root access, I am fully satisfied so far. I hope to fix it soon. If we had root access then we could solve this issue with the system time with some time apps ourselves.
Thank you for your experiences.
Best regards
Diabollon
wiring harness investigation
so played around some today.
I've got an issue where I need to recalibrate the screen almost every time I boot. it seems the box (or card added to the radio?) forgets things and only works the bottom right corner and also seems to rotate 90 degrees at boot. The end result is unusable screen. I think carperformance is just a reseller because of their response. They're friendly and reply quickly but are really unable to help. The first answer was just randomly fiddle with screen and try to find calibrate setting and reboot- that proved impossible and on my own I discovered a 6 dollar USB mouse from the Walmart could be used to navigate to the calibrate app. When I inquired again when it got more frequent they basically said it's not normal and offered no help except to adjust a personalization setting to run calibrate on boot- that only works once that I can figure (might be related to weird time bug)- so I settled on having tasker run calibrate on each boot. I wonder if there is a battery in the box that needs changing but the warranty sticker keeps me out for not- might add an external battery to keep it alive for a longer time to minimize the rebooting
Anyway took everything apart today to double-check and can't find any connection issues. I traced the harness a bit to try and understand a little and basically, the skinny cables run the daughterboard to snag the screen output and the touchscreen input. But i wanted to figure out what is tapped from the radio harness to the large white plug on the box and see if anything going on their .
DISCLAIMER- I NEED TO CONFIRM (it was hot - laughing) but basically seems what is tapped in radio harness is:
1) power and ground also
2) L&R aux audio signal- interesting here is they tapped a single ground (physically next to the right signal) for common. Earlier i had the RAX hack and their harness used a ground for each L&R and their aux input worked all the time without the little plugin shunt thing to trick aux input. When i dug some more and found a pin diagram from mopar I found that the 'left' ground is actually labeled "aux audio device detect signal" I need to play some more to see what happens but my guess is if we put a switch on that to short it to ground then the aux would just work to avoid the hokey plug.
3) Here's the fun- holding the screen to flip inputs could be the daughterboard running things. BUT since it also reacts to the left steering wheel button pack and switches inputs itself when you need the reverse cam- i figured it reads the can bus. and sure enough, it looks like it taps CAN IHS (+) and CAN IHS (-). Very cool that it would get into the whole bus and read anything- BUT since there are other FCA vehicles that don't auto-switch inputs on revers and they have alternate connections it seems the real dev is not involved to update things to sniff for other reverse signals. Reading around here- seems that there is probably a custom serial port someplace in the box that reads this and there's probably no documentation for us to do anything ourselves. But one can hope...
---------- Post added at 06:12 PM ---------- Previous post was at 06:07 PM ----------
michaelk said:
glad to hear i'm not going crazy with the clock but there is an issue.
I just bought and installed a V4 a couple weeks back too.
i must have left a loose connection cause i keep having to recall the touchscreen for android. I half-arsed the install cause we were leaving for a 2k mile roadtrip the next day- need to take it apart and do it right. Luckily you can connect a usb mouse in to trigger the calibration app.
id also love root- at the moment im trying to figure out if the one usb port is safe to connect an A to A usb cable into to get ADB. apparently on some versions of nvida sheild, you can. If they provide a firmware update for the clock fix then maybe that gets us an image to futz with for root.
a keyboard also works in teh usb port and i've tried a handful of key combos during boot to get to recovery but haven't stumbled on it yet.
I'll post back if i find anything
Click to expand...
Click to collapse
So the spec for the chipset for the V4 says it can handle an OTG port and a couple (maybe 3?) other USB ports. Obviously, the box only has the one USB A port visible on the pigtail. I wish we could get in the box and look for a header for the OTG port to help rooting but.... the darn warranty sticker.
on the FCA/Dodge side of things- I have a Durango with a USB port and SD card reader in the dash (USB Media "Hub" Apparently, FCA uses USB Mini B connectors to interconnect all the ports and the radio. They use latching connectors that are keyed but if you undo them there's a standard USB mini B in there. They do some odd male/female things so you have to pay attention to where you undo cables, but bottom line you can undo the connector on the back of the dash's USB port and stuff a USB mini B female on it and connect it to whatever host device you want.
I first tried an old laptop in case there's anything weird going on. My Dash "Hub" actually has 2 mini-B connectors and a multipin auto harness. Without the harness when you connect it to windows it sees a USB Hub, but the USB port was still dead. So I assumed it needs power from the harness on the back of the dash hub and connected that. UP popped up a USB mass storage device which I believe is the SD card reader- didn't get around to confirming and then the USB port also comes to life. Knowing that it was safe at that point I connected it to the USB A Host port on the box and presto chango now I have the in-dash port connected to the android tv box without any exposed wiring.
Connected the "android auto dongle" through the cars USB port and that works perfectly. I ordered a used 2 USB dash hub from eBay (later model years have 2 and will see what that does. The pictures of that also show the 2 mini B ports- I'll play some more when I get that. I'm not sure what is in those dongles but from the other folks hacking android auto into older models (by using newer radios) apparently, one port works for android auto and the other doesn't. The scuttle is its a body module programming thing but I wonder if maybe there's something physical in there and so the dongle won't be necessary any longer with the new hub? My other thought is if the two USB min B jacks allow you to connect to 2 different hosts- I would try one on the original Uconnect (in case I ever need to update the software) and the other for the android TV box.
So apparently the android tv box handles hubs just fine. As I mentioned earlier it handles a mouse or USB keyboard fine. Also, I played around and connected my hotspot by USB instead of wifi so the device sees it as a modem and that works just fine- so I assume a USB modem works out of the box too. (again odd if that works that carperformance sells a hotspot and not USB modem- like they don't know what the box can do)
I disassembled my display 2 times until it worked. After the first start, I had a black screen. I thought that was it... After 3 times it finally worked. I also had a cable on the plug which has easily resolved. I think you will also have a loose contact somewhere. One time I also had the display calibration gone. Then I connected my old usb keyboard and could then start the display calibration. I reset the system before. So far, the system works without problems. I also have a passive 4-way usb hub to connect.
I have already connected cables for the frontcam but have not yet moved into the engine compartment.
In the video tutorial of Carperformance, you can see when you switch to drive, the display then changes to the frontcam or signal from the cam, but the display does not change to the Frontcam signal with me.
Do you have with you the signal on the display of the camera when switching to drive?
Adw2 = bad mix
Went back and forth many times in email and turns out my calibration issue was probably all ADW2 launcher, guess it conflicts with whatever app they use to communicate with the display.
in the process of troubleshooting I got the update zip for the current version but I don't think those have recovery partition in there and so can't help root? I need to read some more.
I've ripped everything apart like 12 times with the screen, so that my front cam is not connected right now. For the brief time I had it, it was connected to one of the smaller video in pin connectors and don't think it worked in drive by itself, but can't really say for certain. I think certain models can't get the canbus command to see reverse and if I understand they connect in to the video in on the main connector and then use a point on the car that is energized to trigger the switch on that connection. If your adventurous they seem to have to flip a dip also. I think it's the Cherokees or maybe grand Cherokee so maybe Google their thread's? This site gives connector pin outs
http://connectors.dcctools.com/home.htm
There might be a lead for the drive on your shifter if lucky. I think I read the reverse shoulder comes from a body control box in the passenger wheel well?
Also they're super friendly and never wrong when you email but they can be brief. So you could ask if there's a dipswitch to flip to enable auto switching one of the inputs. Hec maybe we should just ask for a table of where the dips do...
(Sorry for any typos... Will try to edit later)
Supposedly it is enough to connect the extra input cable for DVD or CMMB. That answered me Carperformance. Before, I had no external input cable connected. That's why no signal came. The OEM rearcam works flawlessly.
Also, I forgot, they have a workaround for the clock bug
For the clock there is a fix
https://www.youtube.com/watchv=3OEEbah53QY&t=1s
michaelk said:
Also, I forgot, they have a workaround for the clock bug
For the clock there is a fix
https://www.youtube.com/watchv=3OEEbah53QY&t=1s
Click to expand...
Click to collapse
Unfortunately it's not available.
Diabollon said:
Unfortunately it's not available.
Click to expand...
Click to collapse
try this-
https://www.youtube.com/watch?v=3OEEbah53QY&t=1s
michaelk said:
try this-
https://www.youtube.com/watch?v=3OEEbah53QY&t=1s
Click to expand...
Click to collapse
It's a cheaper fix but so no solution. Carperformance should offer a software update with root access. Then we would be satisfied. We should expect it for the money.
My frontcam is working now good.
You already tried Android auto? Which USB dongle do you use? Do you need a special app for this?
My China usb dongle does not want to connect properly with my oneplus 6T.
Edit:
Android auto is working with Pumpkin USB dongle and autoplaybox app. The noname China scrap goes back to shop.
The time fix is working until now also. Thanks for this info. The carperformance, they wrote or informed the affected people who ordered it. I did not get any info.
Diabollon said:
...
My frontcam is working now good.
...
Click to expand...
Click to collapse
besides powering your camera and connecting the yellow RCA video signal did you have to do anything else?
something with the red signal wire maybe?
I cant consistently get a signal on my front cam and not sure if the camera is bad or my setup
---------- Post added at 12:55 PM ---------- Previous post was at 12:42 PM ----------
few other notes for others-
FCA "aux audio device detect signal" harness line is actually normally closed (I think shorted to ground)- if you break the connection the oew radio flips right to aux in. make the connection again and it flips back to previous input.
the in dash usb port is infact a powered hub. I originally had a usb + SD card combo and replaced it with 2 usb port and works fine. FCA uses mini b connections to it- just use a usb a to mini b cable to connect it to the android auto box and your indash usb port(s) will work on android auto (And provide more watts to charge your stuff). oddly either dahs hub has a second usb mini b connector that i played around with a little but never could figure out what it does
more can bus fun! - i updated the dongle firmware on the android auto dongle sold direct from carperforance and now it has a beta feature to map buttons. somehow it seems to be sniffing the canbus through the android tv box. it has arrow keys, numbers, enter, etc and you use the app to select the input to assign then you press the same button on the car twice- it sniffs the signal and assignes it. I My durango has the button packs on the steering wheel and i was able to assign up, down, left, right and get it to have the android auto respond. Need to play more but i think it actually goes android wide. For example i think the down button on my steering wheel was sending page down to the chrome browser i had open on the box. Pretty cool stuff if they expand that.

Question S22 OTG Gamepad Gamesir x2

I have an S22 with Stock Android and bought Gamesir X2 to play XBOX Cloud and Retroarch games with it.
For some reason I decided to buy the USB-C version over the Bluetooth (I thought I was neat to be able to charge the phone while playing and also less input lag due to BT delays).
Thing is, gamepad arrived, I rushed to plug it in and found out nothing happened. Gamepad blue light stays blinking (its supposed to stay blu when connected) and the phone doesnt even detects anything.
This is supposed to be a simple OTG gamepad, so should be plug-n-play.
I reached to Samsung about 'how do I enable OTG to use my gamepad' and the answer was 'OTG is enabled by default'
I also reached out to Gamesir, they told me to try press G+S buttons on the pad while connected, but nothing happened
There's a Gamesir app that is suppsed to be used to detect it (and also map the gamepad on some touch screen games) but doesnt work for me
I also found some guy on youtube claiming I should enable ADB debug and set USB default to 'File transfer'. Doesnt work either
Anyone having the same issue?
Anyone having a USB-C Gamepad working?
Any ideas on what to try out to get it working?
Thanks in advance
I've recently run into a similar issue however on a S23+. The device I'm trying to use is a Seek CompactPro FF USB-C which uses powered OTG. No need of a cable as it has USB-C built into the device itself.
It didn't work at first, it detected it and tried to open the "Seek Thermal" app which is normal but in the app itself the device was not being detected. Did a ton of searching until finally I found another person having a similar issue where the work around was to plug in the OTG device, then reboot the phone with the device still plugged in.
Give that a try? IMO it shouldn't be like this, and it isn't very well documented anywhere I look...but that worked for me for my device. Did not work any other way. Device works perfectly fine after rebooting phone with it plugged in.
86brown said:
I've recently run into a similar issue however on a S23+. The device I'm trying to use is a Seek CompactPro FF USB-C which uses powered OTG. No need of a cable as it has USB-C built into the device itself.
It didn't work at first, it detected it and tried to open the "Seek Thermal" app which is normal but in the app itself the device was not being detected. Did a ton of searching until finally I found another person having a similar issue where the work around was to plug in the OTG device, then reboot the phone with the device still plugged in.
Give that a try? IMO it shouldn't be like this, and it isn't very well documented anywhere I look...but that worked for me for my device. Did not work any other way. Device works perfectly fine after rebooting phone with it plugged in.
Click to expand...
Click to collapse
Thanks for your reply 86, tried that but didnt work for me. I saw a couple of videos where the blinking blue light might mean that its not connecting well (its supposed to stay blue) so I guess its something to do with how the cable is connecting. Since Gamesir already told me I have no warranty nor support from them as I bought it on Amazon instead of their site I'm thinking on tearing it appart during the weekend.
If I break it I'll end up with a nice pouch case for my cables (the most expensive pouch ever).

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