Develop Bugs

Playing audio from Android to my car stereo via USB

So I'm getting a new car tomorrow (2012 Chevy Cruze) and I know it has a USB port that allows charge/data.
I've been reading around the Cruze forums and it sounds like I can't stream Pandora/Google Play Music via the phone plugged into the USB port, but rather instead, I have to have an AUX cable and go through that. The disadvantage is I have to control the music via the phone, not the in-car console, amongst other things.
Has anyone had any luck getting an Android phone to stream Pandora/GooglePlayMusic through a USB port without using any mods or the AUX port? Apparently it works with iPhones, but not with Android.
Just was curious if that was true. Either way, I'll find out tomorrow.

I have a 2012 civic and my usb port in the car makes my phone go crazy so I haven't plugged in again. I have used bluetooth for pandora and it works. I can control volume through car.

no usb audio
Our phones wont do usb audio on car stereos. For some reason you can not mount your drives, i had a nexus s and evo that would mount though. It has to do with how samsung configured the system. I just went ahead and got a bluetooth system because it is easier to control the sudio from the phone and also hands free calling

saj1jr said:
So I'm getting a new car tomorrow (2012 Chevy Cruze) and I know it has a USB port that allows charge/data.
I've been reading around the Cruze forums and it sounds like I can't stream Pandora/Google Play Music via the phone plugged into the USB port, but rather instead, I have to have an AUX cable and go through that. The disadvantage is I have to control the music via the phone, not the in-car console, amongst other things.
Has anyone had any luck getting an Android phone to stream Pandora/GooglePlayMusic through a USB port without using any mods or the AUX port? Apparently it works with iPhones, but not with Android.
Just was curious if that was true. Either way, I'll find out tomorrow.
Click to expand...
Click to collapse
Might be something in this that may help you out if you haven't seen it already.
Sent from my SPH-D710 using xda app-developers app

Maybe this line out with usb type thing will be helpful. I haven't tried it yet but I'm going to be cutting apart one of my cables soonish to see if it'll work.
It's basically just using the dock audio setting for the Galaxy SII.

From what I was able to find, this isn't capable with current versions of Android and I found this information on the code.google website. If you do a google search for "android audio out through usb" it should be the second result listed with "Issue 24682" in the title.
However, it looks as though Android is going to add this function starting in Android 4.1 (Jelly Bean). If you do a search with "android audio out through usb jelly bean" you'll get more info on the official details.
Good luck with your new car, hope this information helps.

There are a few aftermarket radios with partial support. The best I've seen is the AppRadio 2, but that's pretty expensive and I don't remember if it gets along with Google Play Music. I'm really interested in finding a good solution as well. My iPod Touch's battery life has gone to crap and I'd love to get rid of an Apple device rather than repair it.
I wonder if apps can control the USB port on Android? If so, one could potentially develop and app to spoof an iDevice...

You should be able to use the car radio volume with auxiliary.
Sent from behind you.

skar81 said:
From what I was able to find, this isn't capable with current versions of Android and I found this information on the code.google website. If you do a google search for "android audio out through usb" it should be the second result listed with "Issue 24682" in the title.
However, it looks as though Android is going to add this function starting in Android 4.1 (Jelly Bean). If you do a search with "android audio out through usb jelly bean" you'll get more info on the official details.
Click to expand...
Click to collapse
I have Galaxy S3 and I upgraded to Jelly Bean, in hopes it would work - but it didn't.
In the Settings app, under Accessories, Jelly Bean users have a new option to play audio via external devices (they refer to it as "docks" which seems not too broad).
Apparently, this does not work unless the device was setup to support Google's audio protocol: Android Open Accessory Protocol 2.0 (AOA).
Android Documentation on that: source.android.com/tech/accessories/aoap/aoa2.html

saj1jr said:
So I'm getting a new car tomorrow (2012 Chevy Cruze) and I know it has a USB port that allows charge/data.
I've been reading around the Cruze forums and it sounds like I can't stream Pandora/Google Play Music via the phone plugged into the USB port, but rather instead, I have to have an AUX cable and go through that. The disadvantage is I have to control the music via the phone, not the in-car console, amongst other things.
Has anyone had any luck getting an Android phone to stream Pandora/GooglePlayMusic through a USB port without using any mods or the AUX port? Apparently it works with iPhones, but not with Android.
Just was curious if that was true. Either way, I'll find out tomorrow.
Click to expand...
Click to collapse
Hello,
I just recently bought a Chevy Cruze eco 2012 - i didn't research about my android phone and i was dissapointed the bluetooth doesn't work as A2DP. I should of waited for a Eco 2013 includes mylink
I has to research later and found out that it's not supported. what i'm using now is a usb sitck to play my music and sometimes AUX.
I also read that we can use the bluetooth blackberry stereo gateway nad stream our music - i'm thinking of purchasing one.
Ahhh!!!
Also there is a hardware hack lol you can replace the bluetooth module PDIM from a Camaro.
http://www.cruzetalk.com/forum/36-electronics/5833-diy-pdim-test.html
http://www.cruzetalk.com/forum/36-electronics/9346-bluetooth-music-streaming-android-phone.html
http://www.cobaltss.net/forums/electronics-audio-video-49/updated-bluetooth-module-281218/
I have been thinking about the PDIM not convinced 100% i dont wanna mess it up lol
I also try using the USB switcher mode to change to usb storage but i get an error for music data not supported.
If you find anything let me know

USB OTG works with Pendrive, but not with Mouse/Keyboard

Hi there!
As it is written in the subject, the problem is related to the OTG feature of the Galaxy S2.
I've bought a $2 USB adapter for my phone and I have been able to mount a pendrive or a HD (when it is plugged to an external power source).
But when I try to connect a Mouse, Keyboard, Gamepad, etc., nothing happens. Not even an error message.
I'm using an official Android 4.03 rooted ROM (Claro Argentina).
Does anyone know what could be happening? The problem is my ROM (and it's drivers)? Is my USB otg adapter that is not compatible with mouse and keyboard?
I attach a screenshot of my system
img.tapatalk.com/bef728f6-6c26-6964.jpg
Thanks!
Sent from my GT-I9100 using xda app-developers app

Same here with official ICS 4.0.3

I have the same issue with official ICS and CM9. I've seen youtube videos where they show mouse and keyboard just working on a GS2 just running official ICS.

As soon I see this, I tested it on my own SGS2 and it's works!
I'm using stock firmware LPW (open europe) with CF-Root.

I have had this problem too and I figured that this is problem with missing drivers in kernel (in my case) - it was firmware issue. Some firmwares (official) don't have all drivers necessary to work with all mouses and kayboards (some work some not). That's depends on how the kernel was compiled for firmware.
Try to install other firmware (official) or other kernel if you don't care about being 'stock' - maybe this will help.

Works using Siyah kernel.
Sent from my GT-I9100 using xda app-developers app

A standard USB-HID keyboard works fine if it doesn't consume to much current.
Blue tooth mouse and keyboard works to you know.. Just sayin'

Actually its all depends on your USB otg cable. I have two but one doesn't work for mouse/keyboard but works only for pendrives. Another just work perfectly for pen drives and even mouse/keyboard. I am using stock 4.0.3 non rooted ROM.

http://forum.xda-developers.com/showpost.php?p=32244758&postcount=4

Your keyboard probably does work, but needs more ampere than the phone can deliver.
I just tested my Note 2 with a USB keyboard connected directly and it didn't work,
but when I connected a USB hub with external power, the keyboard worked fine.

What should I buy?a usb OTG cable or a MHL cable? What's the difference between the two?
Sent from my GT-I9100 using xda app-developers app

OTG cable is for connecting USB devices like mice or USB flash drives to your phone.
A MHL cable is for connecting your phone to a display with HDMI input like a TV or monitor.
So what you should buy really depends on what you want to use your cable for.

USB Audio

Hello, all!
I read tons of forums on the topic of USB Audio on Android phones and I am still very confused. I was wondering if someone knowledgeable could clear up my understanding of the issue.
Here's my understanding:
1) The device has to have hardware USB OTG support. Galaxy S3 has it. What about S2? If I can connect an external harddrive or a mouse to my phone and it works, it means basic hardware USB OTG support is present, correct?
2) Kernel has to be compiled with USB Audio support. Which kernels are available that has this feature?
3) Then there are posts saying that 4.1 Jelly Bean has USB Audio support. Does that mean that any device > 4.1 should be able to play USB Audio out of the box? Should my S2 work with any USB Audio device if I flash Jelly Bean on it?
4) But then the corresponding Google Code issue is still open. What does it mean? What exactly happened in 4.1 in regards to USB Audio?
5) Some devices like Galaxy S3 support USB Audio out of the box. But some amplifiers like E17 do not work with them even though they're supposed to. E17 has a hardware issue which other amplifiers do not have. Is this roughly correct?
6) How exactly should it look like when it's working? Do I just connect the device and after some delay, all sound is redirected to the external device? Or there's some option somewhere to do it, or an app?
7) Any information whether Nexus 4 has USB Audio working out of the box?
Thank you very much for your help!
Regards,
Artem.

1)> If I can connect an external harddrive or a mouse to my phone and it works, it means basic hardware USB OTG support is present, correct?
Yes
2) Depending which device you use? I you build your own kernel, check this setting in menuconfig
Location:
-> Device Drivers
-> Sound card support (SOUND [=y])
-> Advanced Linux Sound Architecture (SND [=y])
-> USB sound devices (SND_USB [=y])
3) http://forum.xda-developers.com/showthread.php?t=1820411
"I have to say, USB Audio support for Jelly Bean was a massive dissapointment since the DAC has to support the ADK. When I tried my standard DAC with Jelly bean, it did not work."
4) see 3. The solution in 4.1 is not want we want.
5) no idea
6) Read: http://forum.xda-developers.com/showthread.php?t=2029728
7) unlikely.

First of all, thank you so much for the prompt response! Please see my comments below.
wildzero said:
2) Kernel has to be compiled with USB Audio support. Which kernels are available that has this feature?
Depending which device you use? I you build your own kernel, check this setting in menuconfig
Location:
-> Device Drivers
-> Sound card support (SOUND [=y])
-> Advanced Linux Sound Architecture (SND [=y])
-> USB sound devices (SND_USB [=y])
Click to expand...
Click to collapse
I don't know how to compile my own kernel, and I'm using Galaxy S2. Could you please tell me if:
a) There exist ROMs for Galaxy S2 (SGH-T989) which has USB Audio support compiled in.
b) Is there a way to find out? Meaning, download a ROM and somehow figure out if it has what I want.
I guess I could compile my own kernel, I'm a software engineer, but I haven't the slightest idea where to begin. Could you also point me to some Android kernel building primers, if they exist?
wildzero said:
5) Some devices like Galaxy S3 support USB Audio out of the box. But some amplifiers like E17 do not work with them even though they're supposed to. E17 has a hardware issue which other amplifiers do not have. Is this roughly correct?
no idea
Click to expand...
Click to collapse
Is there full list of devices somewhere that support USB Audio out of the box?
wildzero said:
6) How exactly should it look like when it's working? Do I just connect the device and after some delay, all sound is redirected to the external device? Or there's some option somewhere to do it, or an app?
Read: http://forum.xda-developers.com/showthread.php?t=2029728
Click to expand...
Click to collapse
That was very useful, thank you. So is my understanding correct that, for example, on Nexus 7, which this post is about, after these patches are installed, when the USB DAC is connected, the sound is automatically redirected to USB, without any need for action and also without any indication? Do you know if this works the same way on, say, Galaxy S3 which, as far as I've read so far, supports USB DAC out-of-the-box?
The reason I'm asking those questions is because I don't have a reference configuration, and if the sound is not working, I need to know if the problem is with kernel/patches, USB cable or the particular DAC I am using.
Thanks again!
Regards,
Artem.

Do you have a USB DAC or Android compatible audio dock?
AOKP JB on the T989 has an audio setting under System Settings> Dock. I don't have a suitable usb device to test it on, but I've been considering a USB DAC for my T989.
I'm sure CM10 and other ROMs would have it, too.
ΧΔΑ Fraternity: Since everyone is too lazy to read the OP, here's a brief history

Possible to get midi input to our phones? [YES]

Is there a way to get midi input recognized on our phones? On my pc I use the rock band 3 keytar connected via a midi to usb adapter and I can do midi playback.
Is there a way to do this on our phones via an otg cable?
EDIT: got it done! check my post below.
Sent from my SPH-L900 using xda premium

Re: Possible to get midi input to our phones?
Seems like I found qhat I needed. Will try it tonight and report.
https://play.google.com/store/apps/details?id=com.als.grandpiano.pro
Sent from my SPH-L900 using xda premium

it works beautifully and way easier than I expected.
connected my otg cable and the phone said usb connector connected (since when is this a thing!?), plugged in the midi-usb adapter to the otg cable and right away it prompted me to open with the software I linked above and another midi software I had installed.
and bam, it was working. I messed around a bit to find the better settings for my keytar, but this thing works. over Bluetooth and with the headphone plug. there's a little bit of lag over Bluetooth but for my uses I wanted it straight to the speaker so i'm using the stereo cable. now I don't need a pc to get sound out of the keytar.
mark this as one more day i'm amazed at what my phone can do.
by the way, it functions as a synth using the software I mentioned above, so I can play harpsichord, organ, piano, etc. and the sound keeps on playing even with the screen off.
happy camper = me.

Max_Pain said:
it works beautifully and way easier than I expected.
connected my otg cable and the phone said usb connector connected (since when is this a thing!?), plugged in the midi-usb adapter to the otg cable and right away it prompted me to open with the software I linked above and another midi software I had installed.
Click to expand...
Click to collapse
Looks like you had some luck... Wondering if you can help me?
I am trying to make my Android, Huawei p20 Pro, accept a MIDI signal via USB too.
I have an OTG adapter, and have tested 2 OTG adapters and 2 cords.
All work into my PC (even via an USB type-C to standard USB adaptor )
The issue seems to be that I cannot select the USB in type to be MIDI.
I have also experienced that on another Samsung Galaxy S10
I have tried opening developer settings and changing the setting "Disable USB Audio Routing" ON as per https://help.joytunes.com/en/articles/2636638-troubleshoot-midi-on-your-android-device
I have tried using it with 3 apps that accept MIDI.
Simple Piano by Joy Tunes, FlowKey and USB MIDI Monitor
Any ideas?
Environment
Huawei p20 Pro
Model: CLT-L29
Build: 9.1.0.381 (C782E11R1P11)
EMUI v: 9.1.0
Android v: 9
Similar Posts
https://forum.xda-developers.com/mi-pad-4/help/problem-recognizing-midi-device-t3877082
https://forum.xda-developers.com/oneplus-x/help/midi-usb-mode-paranoid-rom-t3430141

[Q] Logitech Unifying Receiver not working on Nexus 7 (2013)/OTG Cable Question

I'm trying to connect the unifying receiver to my Nexus 7 (2013) with an OTG cable, but it doesn't work.
USB diagnostics app by Chainfire says the kernel detects it, but the Android API doesn't (not sure what that is). All other USB devices I have tried seem to be working.
I think I read of other people having the same problem. I was wondering if this was a problem with the 2013 Nexus 7 in general. If so, is there a fix? or will there be one?
Also, I was playing with my tablet and OTG cable; I was wondering if anyone else has USB devices "sleeping" when the tablet is put to sleep.
I noticed when I plug the cable in the tablet while it is awake, and then plug in a USB device, the USB device will work fine until I put the tablet to sleep. After I put the tablet to sleep, the USB device would power off, and after waking the tablet back up, the device would remain off and unresponsive.
The workaround I found was to plug in the cable while the tablet was asleep, and then waking up the tablet before plugging in USB device. I would then be able to put the tablet to sleep with the USB device remaining powered (while it's asleep and) when it's awakened.
Sorry if this was confusing.
Thanks!

I've got a working OTG fix that does not require root after much messing about!
Go to settings and disable security lock screen then select English US as the language.
Insert OTG cable and start Nexus Media Importer.
Reboot.
Nexus Media Importer should now pop up as usual and OTG should now be working.
Change language back but do not reboot as you will have to repeat these steps.

Same problem..
I have tried nexus media importer or custom kernel, ETC.. however, the problem is occurred again.
Everytime, kernel has error like..
Code:
logitech-djreceiver 0003:046D:C52B.0018 : claimed by neither input, hiddev nor hidraw
logitech-djreceiver 0003:046D:C52B.0018 : logi_dj_probe:hid_hw_start returned error
Is there anyone uses unifying on Nexus 7 2013? :crying:

Same issue with the receiver
My Unifying receiver works on my SGS 3, but it doesn't seem to work with my nexus 7 :'(

Lurkin_Lurker said:
I'm trying to connect the unifying receiver to my Nexus 7 (2013) with an OTG cable, but it doesn't work.
USB diagnostics app by Chainfire says the kernel detects it, but the Android API doesn't (not sure what that is). All other USB devices I have tried seem to be working.
I think I read of other people having the same problem. I was wondering if this was a problem with the 2013 Nexus 7 in general. If so, is there a fix? or will there be one?
Also, I was playing with my tablet and OTG cable; I was wondering if anyone else has USB devices "sleeping" when the tablet is put to sleep.
I noticed when I plug the cable in the tablet while it is awake, and then plug in a USB device, the USB device will work fine until I put the tablet to sleep. After I put the tablet to sleep, the USB device would power off, and after waking the tablet back up, the device would remain off and unresponsive.
The workaround I found was to plug in the cable while the tablet was asleep, and then waking up the tablet before plugging in USB device. I would then be able to put the tablet to sleep with the USB device remaining powered (while it's asleep and) when it's awakened.
Sorry if this was confusing.
Thanks!
Click to expand...
Click to collapse
Any News in this area? I Bought my Nexus 7 to use it during class (as a studytool ofc) . But without having my external keyboard it isn't of much use

I've been having trouble getting my Logitech K750 keyboard to work on the nexus 7 (stock ROM, only rooted). Does anyone know if the Logitech Unifying Receiver is supported on this product? It works perfectly fine on my Galaxy Note N7000 running CM10.2
I can get other USB devices to work on the Nexus using the same OTG cable, for example Logitech MX Revolution wireless mouse, Xbox 360 controller and USB flash drives.

Same problem
I have the same issue with a stock/non-rooted Nexus 7 (2013) and my Logitech unifying receiver. Sadly all I can really say is what did and didn't work.
Does work:
OTG adapter from monoprice.com
Trendnet Powered USB 2.0 Hub (TU2-700)
Microsoft Wireless Mouse 5000
Every USB flash drive I've tried has worked via the 'Nexus Media Importer' app (FAT/FAT32 devices). Even multiple plugged-in flash drives connected simultaneously via the USB hub works just fine.
Custom built USB 2.0 External Hard Drive (using a Nexstar enclosure and Western Digital 320GB hard drive; powered off USB hub)
Apple iPhone 4s (iOS 7) - The tablet called the phone a MTP device and viewed the media (pics) through the built-in Gallery app importer
Does NOT work:
Logitech unifying receivers - Specifically, I tried with the K360, K400 and K750 keyboards and a M510 mouse
USB 2.0 10/100 Ethernet Adapter from monoprice.com (no apparent model # but it's their PID#: 9468)
USB 2.0 Logitech C910 Webcam
USB Logitech Headset G330 ...I was just curious
So far compatibility seems arbitrary. I would have thought the Nexus 7 (2013) would have better compatibility with Logitech, a maker of Google TV's, versus Microsoft or even Apple but that has not been the case. If this is a bug, it's a big one considering the popularity of Logitech devices. Sadly, I personally don't even have a keyboard that will work.

Any more details about this problem? Surely this must be a driver issue, since I don't see any other reason why the unifying receiver would refuse to work on the new Nexus 7. As stated above by others, it works perfectly fine on other devices, including the stock rom running TF101 transformer tablet.
I'm running CM nightlies on my Nexus 7 and was really surprised to see that it doesn't work with my unifying kb & mouse
---------- Post added at 01:34 PM ---------- Previous post was at 01:14 PM ----------
Just tested with a different USB tester app - the receiver is obviously recognised. The OS can see it, and gets the device/vendor ID, and the device name... but no mouse cursor
http://i.imgur.com/moYVDet.png
http://i.imgur.com/OjFGzaw.png
Tested it with an older Logitech mouse that I have (doesn't use Unifying receiver), and that worked just fine..
http://i.imgur.com/aHdk6Qv.png
http://i.imgur.com/Z8qhoFr.png
But I need the new unifying one to work, mostly for the keyboard.

This issue is discussed here: http://forum.xda-developers.com/showthread.php?t=2233849
I'm also having trouble with this. My K400, which would be awesome for tablets, isn't able to work, for it uses a Logitech unifying receiver. It seems it's a simple fix within the kernel. I've tried flashing many different kernels for this device, yet none have added support for it. The device works well on my Galaxy S4, if that means anything.
We'll need to get ahold of one of the developers and hope they're willing to add in the necessary stuff to their kernel if we want to fix this.

Could it be that a current Nexus 7 dev has to integrate some of the patches listed in some of the roms posted here: http://forum.xda-developers.com/showthread.php?t=2233849 ?

mohitrocks said:
Could it be that a current Nexus 7 dev has to integrate some of the patches listed in some of the roms posted here: http://forum.xda-developers.com/showthread.php?t=2233849 ?
Click to expand...
Click to collapse
How can we ask them that?

Anyone found any update news on this issue:?
Marty

I can't help with the unifying remote but the sleep of the USB drive drive me nuts too I was recommended this app and it worked perfectly
https://play.google.com/store/apps/details?id=com.MI.otglock
Sent from my HTC One X using Tapatalk now Free

The Logitech Wireless Touch Keyboard K400r works with its unifying receiver and OTG cable plugged into the original Nexus 7:
Android version 4.3
Build number JWR66Y
Kernel version 3.1.10-g1e8b3d8
But the above set up does not work with the 2013 version of the Nexus 7:
Android version 4.3
Build number JSS15R
Kernel version 3.4.0-g9e52a21

Bump
Solution Anyone?
Can't believe that none of the N7 developers are using a logitech device! !
I got a K400. Works fine with my nexus 5. Not with the nexus 7 2013

need an updated or custom kernel
It looks like we'll need an updated kernel, which has some extra CONFIG switches activated, per these threads:
http://forum.xda-developers.com/showthread.php?t=2233849#2
Has anyone had success with a custom kernel or rom that includes the kernel drivers for the Logitech unifying receiver?
It would be nice to have a minimally changed kernel that included support just for these new drivers:
http://androidforums.com/nexus-7-gen2-2013-all-things-root/770430-otg-cables-usb-logitech-k400r-wireless-keyboard-track-pad-area.html#post6153020

Updates?
Hey all
Was just trying out the Unifying Receiver today and was surprised and disappointed that it didn't work at all.
Has anyone managed to get it working since the last post?
P

no
After my last post, I contacted Google support. They said that they could not help, and Logitech would have to fix it. I tried to talk technical about kernel config switches, and I begged to talk to someone who understood what I was saying, but I basically was told they did not have resources to troubleshoot every possible accessory.
I contacted Logitech, and they said that Google was right. They claimed responsibility and stated they did not support Nexus 7 (2013). It would not work.
Bottom line: This accessory will only ever work in a custom ROM, if it works then.
If anyone has any luck with this accessory on a custom ROM or in any other setup, please let us know.

Earlier posts say it is recognized by the OS, but not Android API.
Then, all it needs should be the files to tell Android it is a mouse and keyboard, right? Seems like the only issueis our device didn't have it in its device list.
What file to mod, what line(s) to mod?

Has anyone found a fix for this? I just bought a Google Nexus 7 2013 - 32GB and am trying to use the unifying receiver with an OTG cable (Logitech devices are the K800 keyboard and Experience MX mouse). The unifying receiver works fine on my galaxy S5 but no luck on my nexus 7. I am currently unrooted running stock lollipop 5.0.2. I am prepared to unlock bootloader, root, and install custom kernel if necessary.
Any info to get the Logitech unifying receiver working on my Nexus 7 would be greatly appreciated.