Database Develop

[Q] Unable to play music in my car stereo with USB cable

Hi
I am unable to play music in my car stereo via the USB cable. It says that mass storage mode will onlly work with memory card
All the reasons why Android was so much better than iOS seem to be fading away one by one. I miss GingerBread.
Other than using the headphone jack RCA to RCA cable, is there any way I can use the USB to play music? What is this MTP and who supports it??
Oh, and my car stereo doesn't have Bluetooth capability, hence the question.
Thanks.
Farhad.

farhadtarapore said:
What is this MTP and who supports it??
Click to expand...
Click to collapse
The MTP USB protocol was designed to solve the problem of allowing both the device and the USB host to have access to the file system at the same time. Unlike USB Mass Storage (where the support comes from drivers in the OS), MTP typically has to be integrated into the applications that communicate with the device. Since widespread MTP use parallels KitKat adoption, you're unlikely to see support in any automotive head unit that's more than a year old. And given the time needed to develop, test, and certify automotive electronics, it may still be a year or more before it becomes a common head unit feature.
Using the headphone jack and controlling playback from the phone is one viable work-around. The other is to just throw all your tunes on a cheap USB stick. It's a little bit of a hassle to keep two devices synced with your music library if it changes often, but your options are pretty limited.

Anyway to play music thru usb port on car radio?

I'm wondering if it's possible to play music on a car radio (or any usb input) thru the usb port on the note 4?
Any app, mod, hack, tweak to mount a certain folder (music) as a thumb drive?
I have several usb input audio devices, but I can't access anything when I attach the note.

I feel you, I tried to do the same with no success ended up buying a 3.5mm headphone jack to rca for my car stereo ?

Yeah that sucks

Araltd said:
I'm wondering if it's possible to play music on a car radio (or any usb input) thru the usb port on the note 4?
Any app, mod, hack, tweak to mount a certain folder (music) as a thumb drive?
I have several usb input audio devices, but I can't access anything when I attach the note.
Click to expand...
Click to collapse
So you're trying to MOUNT a USB DRIVE filled with music and play it to your car stereo? You using a 3.5mm cable or Bluetooth here?
I have some USB OTG cables (really cheap, ebay) and play the music from my SD card using PowerAmp (FLAC Playback, also allows folder choosing; your USB drive?) through the OTG cable, to my Fiio E07k, then to my headphones/speakers. Works FLAWLESSLY, and if I plug anything to the headphone jack simultaneously, it will re-route the audio.
Hope this helps.

I want to use a usb cable from my phone into my car radio usb port and play the music that is in my phone thru the car radio using the usb cable and not the 3.5mm head phone jack.

i believe this is a feature in lollipop to enable audio through usb. gonna have to wait
"Android 5.0 has added official support for USB audio devices (both input and output) along with lower-latency audio input and the ability to mix up to eight audio channels. All of which means one, amazing, thing: "

I want my phone to act like a usb thumb drive when I connect it to my car radio thru the usb port.

Araltd said:
I want my phone to act like a usb thumb drive when I connect it to my car radio thru the usb port.
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Click to collapse
OK I've dabbled in some sterreo, almost all radios that use USB only support apple iPhone via usb . Is your SD formatted as fat32 or ext4

sandman7793 said:
OK I've dabbled in some sterreo, almost all radios that use USB only support apple iPhone via usb . Is your SD formatted as fat32 or ext4
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Click to collapse
I can't remember, I set it up a long time ago. It's a 64gb uhs1 card. I remember I had to format it with a pc app to get it to be recognized in my (then) Galaxy S3, and I simply moved it in to my note 4.

Araltd said:
I can't remember, I set it up a long time ago. It's a 64gb uhs1 card. I remember I had to format it with a pc app to get it to be recognized in my (then) Galaxy S3, and I simply moved it in to my note 4.
Click to expand...
Click to collapse
OK, with that being said, what stereo you using? Display style or single din?
Is it linix based or android?
Brand and model number?

I've got a pioneer single din in the wife's car (can't remember the #) and I've got a Kenwood dnx5120 double din, which has a usb port that will read a usb thumb drive or a hdd (or iPod / iPhone) but will not "see" my phone when connected usb.
I figure if it can read a usb thumb drive or even a hdd, why can't the note 4 mount itself as a thumb drive (external sd card) and allow my radio to read it's content and play it's mp3's?

Ever found a way?
Im in the same situation.
Ive tried the apps that enable usb mass storage mode on my sgh-1337m galaxy s4 and while it works and my computer recognizes my sd card as an usb drive, my car stereo still does not.
Any other way or USM enabler that works?

NachoLaflame said:
Ever found a way?
Im in the same situation.
Ive tried the apps that enable usb mass storage mode on my sgh-1337m galaxy s4 and while it works and my computer recognizes my sd card as an usb drive, my car stereo still does not.
Any other way or USM enabler that works?
Click to expand...
Click to collapse
I have never found a way ? sad to say. If anyone can point us in the right direction if that direction even exists, that would be great.
Sent from my Samsung Note 6

I just bought a Kenwood KDC x701 and I had a very unusual set of circumstances. When I plug in my HTC 10 to either USB cable one or two nothing happens other than charging the phone. The Kenwood radio does not recognize the HTC 10 at all. I thought this was completely normal as I was not trying to mount the HTC 10 internal storage to play music files as I have no music files on my phone except audio recordings I make myself a phone calls and such. I am able to stream music via Bluetooth from the phone to the radio just fine and that's what I've been doing this entire time. The only thing I listen to is tidal music streaming service. So the other day I went to plug in my lgv10 to charge while I was driving and a funny thing happened. The radio display indicated it was reading and then went into a hand mode, it is literally called hand mode LOL. The next thing that happened was a message popped up on my phone asking me if I wanted to download a Kenwood app from the Play Store I hit cancel. Then all of the sudden it started playing music from the Tidal music streaming app. Although no information was displayed on the radio I was able to use the buttons to skip forward and Skip ahead of the different tracks but I am not sure I am able to pause or play music on the radio controls. I am not sure how it is possible to stream digital audio through the USB cable directly into the radio. I have no audio files stored on my phone on either phone and I'm not even sure how to mount internal or external storage on the phone if I wanted to use the head unit to access any audio files. So I called Kenwood and they said what I described is not possible with any of their head units. They did say that I should be able to mount my internal or external storage on my phone and use the Kenwood app two act as a music player and play the files on the phone and have them information sent to the radio. What it sounds to me like is I have a USB OTG situation with the LG V10 and no one knows why. Also of note I am unable to stream music from the lgv10 to the Kenwood stereo and no one knows why Kenwood does not know why. All of the track information is displayed on the radio I can control the songs going backwards and forwards the timer countdown xcetera but there's just no music. I will say streaming music from Tidal music service streaming app sounds much much better through the USB cable versus Bluetooth. I can't believe how much better it sounds over the USB cable it's like adding an amplifier to your system. I will try to make some videos and if this helps anyone that's going to be awesome. Also of note when I select source to USB when I have my lgv10 plugged in it calls the source Android1. This totally sounds to me like USB OTG. What do you all think and has anything like this happened to anyone else? And this does not work with my HTC 10.

I don't believe that this is possible any longer. It was possible under older versions of android (pre kit kat i believe) where the "internal sd" was seen as a physically separate storage device instead of being mounted under /data/media. Once they made this change, they had to swap from USB Mass Storage mode to the annoying Media Transfer Protocol. The reason Mass Storage had to be dropped is because of how it functioned. When you allowed access to your "internal sd" it would have to dismount it from the OS to give the host device plugged into the USB port exclusive access to the file system. Since they made the move to mounting it as /data/media there is no way to give that exclusive access any longer. Trying to dismount that /data/media to give that exclusive control would yank away all of the writable media away from the OS. Android would likely crash, or at least nothing would function any longer.

Help debugging/configuring my custom AA/AM install's USB device network?

Hi all - I'm finishing up installing a 2019 Samsung Tab A 10,1 into my Chrysler 300C. Everything is great, except that my USB SSD drive kills the battery when in standby. Let me detail the build:
Samsung Tab A 10,1 > USB C > Kingston Nucleum USB hub
- This is the only connection into the tablet. The hub is powered from a 12v USB point with USB 3.0 QC and a USB-C PD port. Pass through charging wakes the tablet up as the accessory power energises. Once turned off, the tablet renegotiates power supply arrangements and starts to deliver this to the hub itself. At least, that's my understanding.
Connected to the hub is a 512GB Sandisk SSD (USB 3.0), a Meizu Pro Hifi DAC (USB C) and an external USB 3.0 socket.
Is it possible to have the tablet either unmount the SSD whilst not powered (the SSD might still draw power even even unmounted?) or preferably not take on the role of being the supplier of power to the USB hub? Alternative suggestions are of course welcomed.

Prostheta said:
Hi all - I'm finishing up installing a 2019 Samsung Tab A 10,1 into my Chrysler 300C. Everything is great, except that my USB SSD drive kills the battery when in standby. Let me detail the build:
Samsung Tab A 10,1 > USB C > Kingston Nucleum USB hub
- This is the only connection into the tablet. The hub is powered from a 12v USB point with USB 3.0 QC and a USB-C PD port. Pass through charging wakes the tablet up as the accessory power energises. Once turned off, the tablet renegotiates power supply arrangements and starts to deliver this to the hub itself. At least, that's my understanding.
Connected to the hub is a 512GB Sandisk SSD (USB 3.0), a Meizu Pro Hifi DAC (USB C) and an external USB 3.0 socket.
Is it possible to have the tablet either unmount the SSD whilst not powered (the SSD might still draw power even even unmounted?) or preferably not take on the role of being the supplier of power to the USB hub? Alternative suggestions are of course welcomed.
Click to expand...
Click to collapse
You can use tasker to recognize usb charging on/off and when tab is gonna lose usb charging set it to power off. Unless tab can deliver power from usb even if its off, than you should search for another solution.
For tasker help go to Tasker tips & tricks section on XDA.
Good luck.
Sent from my Galaxy Tab 2 3G using XDA Labs

Thanks for the input! I'll have a look into Tasker. I'm guessing that when you say "power off", the tablet itself is not being shut down....after all, waking an Android device from cold is somewhat annoying to have to do manually every time one starts the engine. Currently Auto Mate wakes the tablet on a USB charging condition and instantly opens the main screen. Very convenient. Hopefully Tasker can integrate into this setup without conflicting with the functionality that works right now! I'll keep this thread updated with what I find, actions taken, etc. so that anybody else going down the path I have doesn't have to ask or chase themselves....
Cheers.

Okay, first impressions. It seems that Tasker might be able to do this but as stated, I suspect that it may conflict with the functionality of Auto Mate. After installing the demo version of Tasker and creating a basic Profile/Task to test detection of USB charging removal (beep, not sure if can/how to unmount yet) Auto Mate no longer autostarts when plugging in USB charging. That bit is somewhat of a backward step before we've even started to move forwards
I'll keep testing and experimenting and hopefully things will fall into place a little better.

Make AndroidAuto WIRELESS using 'USB over the Air'!

Hello, I have an idea how we can make the current Android Auto completely WIRELESS.
Idea is as follows:
Plug a micro Dongle in the car's USB port.
The Dongle will essentially be a WiFi Tranciever. (it may need custom code/firmware etc.)
The Dongle will talk to the Android Phone over WiFi (Because Bluetooth is already being used by Android Auto).
A custom program will be running on the Android phone to send ALL USB Data to the Dongle using WiFi.
Suggested Dongle models:
Xbee, Arduino with WiFi module, any other similar board, possibly any cheap Chinese WiFi USB dongle available on Ebay/Aliexpress.
Things to consider:
The Car's infotainment must recognize the Dongle when it is plugged in as a "USB device" (not a USB Stick/Flash Drive !!!)
The Dongle may need custom code/firmware that will start sending packets to the car's infotainment as soon as it is connected/powered up/car ignition is on, in order to Emulate a phone running android auto.
In the mean time, the app running on the phone will already be connected to the Dongle and the two will be talking to each other.
I you have any other suggestions, leave a comment bellow.
PS: Such devices (USB Over the Air) are actually available on the market, but are quite bulky. We need something smaller.
But even if it is big, we can use a Micro USB plug like this one with flat cable, that will run in the Phone tray, where the board will be hidden so it will not be visible at all!!! :good::laugh:
https://www.aliexpress.com/item/4000325524998.html
Just cut the other end of the flat cable if needed and solder as necessary.
Again, if you have specific ideas/suggestions leave a comment bellow.

https://www.indiegogo.com/projects/aawireless#/

Question Pleasant experience with USB-C hub and external hard drive

I've got a USB-C Hub with: USB-C Power in, 2x USB-A, 1 USB-C, 1 3.5mm, SD/mSD, HDMI.
I connected the hub to: power via the USB-C Power in, an external HDD, 3.5mm headphones, HDMI to monitor, and I used that 1 USB-C port to connect it to Ethernet (I have an ethernet USB-C dongle/adapter). And, then, I plugged it into my phone of course.
I was able to backup the phone to the external HDD (it apparently encrypts the files with your Samsung Account credentials).
Also, luckily, the backup also included APP DATA for individual apps. You can see this in the end-result parts of the Smart Switch backup process.
Not for all apps.
But, for plenty of them.
The apks and the encrypted app data is there in the backup's folder-and-file structure.
I think it backs up any Android app that has the android:allowBackup not set to false (https://developer.android.com/guide/topics/manifest/application-element#allowbackup).
Hopefully, Samsung implements the new device-to-device migration features that allow us to fully transfer app data as needed to an external drive like this. Per that page: "Note: If your app targets Android 11 (API level 30) or higher, you cannot disable device-to-device migration of your app's files. The system automatically allows this functionality.".
I was also obviously able to use the ethernet/internet, DeX on HDMI (FHD display/monitory), and even play audio via the 3.5mm.