Develop Bugs

USB OTG host mode (ANY USB keyboard support!) TUT

USE ANY USB KEYBOARD WITH YOUR USB OTG SUPPORTED ANDROID DEVICE!!!!
I've been experimenting with Wifi cards and the samsung galaxy sII
and realized people where having the same problem as i was having with plugging in usb keyboards.
turns out it all has to do with a vendors permission issue. if your device is not in the list, it will seen as "unknown".
As it turns out you can simply add your device and it'll work. mind you it was to be a simple input device and will have the power constraints of 100mW. But if u can compile a driver and splice in dc power.... skies the limit!
steps:
1. Android must be rooted (not going over that) and must support USB OTG (on-the-go)
2. You can either buy a USB OTG micro to female adapter on ebay for like 4 bucks. i decided to make one myself since i have lots of spare parts.
Heads up: a simple micro usb to female usb connector IS NOT THE SAME AS A USB OTG CABLE, they may look the same but the OTG cable has Pin 4 grounded to pin 5 on the micro usb side. This is how the device distinguishes aach type of cable. WARNING: IF MAKING THIS YOURSELF DO NOT CROSS BLACK AND RED, this WILL fry your PHONE.if you don't know you rway around a soldering iron, just buy one
3. Check what manufacturer your device is on this chart, if it's not there, check on the internet or plug the usb device into a linux box and run "lsusb" in the command promt and look for your device, the number will look like this:
Bus ### Device ###:ID <THIS ONE!>:<more numbers> " Company"
here's the chart: (taken from here :http://developer.android.com/guide/developing/device.html)
Code:
Company USB Vendor ID
Acer 0502
ASUS 0b05
Dell 413c
Foxconn 0489
Garmin-Asus 091E
Google 18d1
HTC 0bb4
Huawei 12d1
K-Touch 24e3
KT Tech 2116
Kyocera 0482
Lenevo 17EF
LG 1004
Motorola 22b8
NEC 0409
Nook 2080
Nvidia 0955
OTGV 2257
Pantech 10A9
Philips 0471
PMC-Sierra 04da
Qualcomm 05c6
SK Telesys 1f53
Samsung 04e8
Sharp 04dd
Sony Ericsson 0fce
Toshiba 0930
ZTE 19D2
eg my keyboard is lenovo , so code is 17EF, you get it
4. log in as root, mount system as read-writeable, Create this file: /etc/udev/rules.d/51-android.rules
if its already there, then just append the command you want after.
if you dont have root explorer or otherwise installed here is how to in bash:
Code:
su
su
mount -o remount,rw system /system
mkdir -p /etc/udev/rules.d/
cd /etc/udev/rules.d/
now in the "51-android.rules" file add this line (or more for more device support):
SUBSYSTEM=="usb_device", SYSFS{idVendor}=="<VENDOR CODE>", MODE "0666", NAME=="<VENDOR>"
my example with my lenovo keyboard:
SUBSYSTEM=="usb_device", SYSFS{idVendor}=="17EF", MODE "0666", NAME=="lenovo"
save.
5. plug in the USB OTG cable and plug in your keyboard or other device. it sould say "usb host cable" then "usb device".
on some keyboards the numlock light wont work, due to the fact of power contraints on the phone, you can add support by plicing in 5v DC in to the line (soldering needed) or you can probably jsut attach a powered usb hub
And thats IT, now you can actually type documents at a reasonable pace, without paying an arm and a leg for a supported bluetooth keyboard!!!
-td8f4
* to moderators i know i have less than 50 posts hopefully i dont get banned, i thought this was considered dev*

Wow, really nice work - I wonder if some kindly ROM devs could just bake in support for all in their ROMs?

NZtechfreak said:
Wow, really nice work - I wonder if some kindly ROM devs could just bake in support for all in their ROMs?
Click to expand...
Click to collapse
wow really good work.
just another info on the price of an BT keyboard:
http://www.amazon.de/s?ie=UTF8&search-type=ss&index=ce-de&field-keywords=CHIN FAI
40 euro are not an arm and a leg
and this i ok to type on

Indeed, you can get some BT keyboards quite cheaply. I already have one, but I'd still like full USB keyboard support (I don't always have my keyboard on me, but lots of people have USB keyboards).

I tested this on an unrooted SGS (Logitech K340 unifying keyboard) and it worked fine without having to change any settings. Just plugged it into the USB OTG adapter and then plugged the adapter into the phone. It said the device was unknown but the keyboard worked when I went to type in the apps. Mice also worked. The logitech MX Performance worked fine. A bit weird seeing a mouse pointer on the phone though.

How about keyboard remapping?
Sent from my GT-I9100 using XDA Premium App

At first I thought:
"1) plug in OTG cable, 2) plug in USB keyb., 3) use"
*lol*
No, seriously, this information is VERY usefull and might open up the way not only for keyboard (as the OP stated, "get a driver compiled and the sky is the limit".
Will definitaly bookmark this thread and when I'm done with some other tinkerings try to "get the drivers compiled"
*clicksthanks*

reply
my ultimate goal is to have a external usb wifi adapter plugged into my phone so i can use it to pentest with a Backtrack 5 chroot session.
i'm working on cross compiling the RTL8187 driver for the ARM architecture.
look here for updates
HTML:
http://forum.xda-developers.com/showthread.php?p=16333147
and @ karl999999
40 euro are not an arm and a leg
and this i ok to type on
Click to expand...
Click to collapse
i know it's not expensive, but i'd really rather use something i already have, i've got a small flexible usb keyboard which works great.

As I'm trying to add joystick support on SGSII, I tried to add an xbox 360 controller and my device was not recognized. I tried this method and added "045E" as vendor but no luck, still not recognized... Any idea ?
Thanks

alx5962 said:
As I'm trying to add joystick support on SGSII, I tried to add an xbox 360 controller and my device was not recognized. I tried this method and added "045E" as vendor but no luck, still not recognized... Any idea ?
Thanks
Click to expand...
Click to collapse
Also interested in this... Sadly I dont have the skills to compile a driver myself...
Sent from my GT-I9100 using XDA Premium App

Thanks. This is so cool and I gotta try it at home later (Tried 2 different keyboards at home before but didn't work). Hopefully you could find a way to use PS3 joystick as well.
Maybe we collect a list of device code and update it a single file. Then rom developer can incorporate it into their roms.
Don't worry about post counts. The is definitively a very good finding and development progress for S2.

alx5962 said:
As I'm trying to add joystick support on SGSII, I tried to add an xbox 360 controller and my device was not recognized. I tried this method and added "045E" as vendor but no luck, still not recognized... Any idea ?
Thanks
Click to expand...
Click to collapse
We might have more luck with generic USB gamepads. I think all we need is someone who has the required knowledge to compile joydev.ko for our kernel.

testando said:
Also interested in this... Sadly I dont have the skills to compile a driver myself...
Sent from my GT-I9100 using XDA Premium App
Click to expand...
Click to collapse
My skill is quite limited too but with some reading it's not that hard (and I can give some help too).

I am looking for support for my Plantronics USB Headset. I am able to control volume through the headset when connected to OTG, but can't route audio through them.
I believe we do need generic drivers for USB Headsets. Hope one of the elite developers can help us. I will be happy to donate 5 euros for the same
Also, my Microsoft Wireless combo (Desktop 6000 v3) do not work while my wireless mouse 1000 do work absolutely fine on the Phone.
I am also looking for NTFS Mass Storage support which seems to be currently limited to FAT32 (and possibly FAT16) only.

Prankey said:
I am looking for support for my Plantronics USB Headset. I am able to control volume through the headset when connected to OTG, but can't route audio through them.
I believe we do need generic drivers for USB Headsets. Hope one of the elite developers can help us. I will be happy to donate 5 euros for the same
Also, my Microsoft Wireless combo (Desktop 6000 v3) do not work while my wireless mouse 1000 do work absolutely fine on the Phone.
I am also looking for NTFS Mass Storage support which seems to be currently limited to FAT32 (and possibly FAT16) only.
Click to expand...
Click to collapse
There is a solution for that already. Search ntfs-3g or posts started by me.
Just tried my logitech wireless keyboard but doesn't work. May need to dig out some old wired keyboard to try later.

somebody can get the USB ID of EuroCase? i can't get it from the internet

takato23 said:
somebody can get the USB ID of EuroCase? i can't get it from the internet
Click to expand...
Click to collapse
Actually, you may found the id by S2 itself. Just install a terminal emulator and do the same lsusb command.

jackleung said:
Actually, you may found the id by S2 itself. Just install a terminal emulator and do the same lsusb command.
Click to expand...
Click to collapse
Okay i could get the usb id from eurocase (i've a keyboard+mouse 2.4ghz pack) It's 1D57. Now when i connect the recivier, says "connected a usb device". But when i try to use mouse or keyboard it get stuck on one letter. I've try with a genius keyboard also (ID 0566) and it does the same... the only device that it works is a Razer mouse (without doing a thing)

My Microsoft Wireless Mouse 1000 works perfectly fine. However my other Microsoft Wireless Desktop combo (6000 v3) doesn't.
Also, I am looking for a way to use my USB headsets. I am able to control volume through it, but can't route audio through it.
Hope one of the devs here would be generous enough to help us get our devices working

Writing a driver and firmware from scrarch is quite a bit more arguous than finding one that works with linux. Look for one.
Once I get this porting business figured out ill post a tut on porting. Maybe even a small vm of the ubuntu box, to avoid rebuilding the setup
Sent from my GT-I9100 using XDA App

[WIP] USB Host support (working)

Hello!
I have been asked into looking for usb host support for nook touch. The hardware appears to be pretty similar to Nook Color, so there were no troubles in that area.
The kernel used by B&N for the Nook Touch is somewhat older than .32 kernel used for Nook Color, so the patch itself required some massage. Surprisingly B&N kernel already has usb host support compiled in, so you don't even need to change anything in kernel config, just apply the patch.
Just like in Nook Color, the id pin in the usb receptacle is not connected anywhere, so a special app is needed to switch the host mode on and off. The Nook Color usbhost switcher should work: https://github.com/verygreen/Nook-Color-usbhost-switcher though I cannot compile it for eclair, so I guess that needs some more massage and help here would be appreciated.
Meanwhile you can simply switch the mode from adb, type
Code:
echo host > /sys/devices/platform/musb_hdrc/mode
to enable usb host mode and type
Code:
echo peripheral > /sys/devices/platform/musb_hdrc/mode
to disable it.
The LED at the bottom that usually indicates charging status will light up in usb host mode even if the power is not connected.
The upside is you don't need a special OTG cable and can just use gender changer on your existing nook cable if you so desire.
Now, problems
I have not tracked why yet, but self powered mode only works when you try to enable it first with external power plugged in first.
The user-friendly tool for usbhost mode switching needs to be compiled for eclair
The self-powered mode is very faint. Keeps up with my keyboard, but not even with a simple usb hub.
Battery drain is significant, though not sure what part of it is attributed to the usbhost mode and what to adb over wifi
Eclair init is buggy so input devices are unusable without a patch, see commit 6405c6953fa02d41d9f6377f4cdb947604f481c4 in google tree to sytem/core/init. I am attaching recompiled init binary that works.
Attachments: binary.zip contains:
uImage - prebuilt 1.1 kernel with the patch
uRamdisk - root ramdisk with fixed init, adb over wifi
init - just recompiled init binary for those who might need it
usbhost_patch.zip - just the patch itself in it's current form.
THANKS TO:
andrewed, who asked me to do this and also provided me with a device. He is on a quest to touchtype on e-paper with a USB physical keyboard, all described here: Project: E-Paper Tablet (typable!)

Thats just awesome, thanks!

Now the only thing missing is a good ebook composer and publisher, and it becomes symetrical.

That is awesome! How about audio and serial ports?
Thanks!

bisbal said:
That is awesome! How about audio and serial ports?
Thanks!
Click to expand...
Click to collapse
Audio will most probably require external power source. Also to make audio work there would need to be some changes to the libaudio, likely similar in nature to stuff I did for Nook Color, only for this older release of Android.
Serial ports will likely work as is as I don't think they draw too much power. The kernel support for usbserial would need to be added of course.

Possibility for Bluetooth dongle? And thus audio?
Sent from my GT-I8150 using xda premium

Thiso said:
Possibility for Bluetooth dongle? And thus audio?
Click to expand...
Click to collapse
Should be possible, but would require external power for the bt dongle I would think.

Verygreen,
As of now, what is the use? Can I put an external keyboard as it is? Does it need a driver (or something of the sort) for that? Can I put a usb stick? Audio and BT, as I can see, need an extra effort...
Anyway, thank you for your effort. I thought I'd never see something like that for the STR.

apeine said:
Verygreen,
As of now, what is the use? Can I put an external keyboard as it is? Does it need a driver (or something of the sort) for that? Can I put a usb stick? Audio and BT, as I can see, need an extra effort...
Anyway, thank you for your effort. I thought I'd never see something like that for the STR.
Click to expand...
Click to collapse
You can use keyboard and mouse as is with just the files posted, no extra drivers need. Everything else would need more work at the android side.

for some phones it is possible to buy usb to audio jack converter, e.g.
http://www.amazon.com/Headphones-Ea...6?s=electronics&ie=UTF8&qid=1327504575&sr=1-6
I don't know how much effort and changes is needed on kernel side to make it work though.
---------- Post added at 04:26 PM ---------- Previous post was at 04:21 PM ----------
Do I need to copy all three binaries? Also, could you prepare uRamdisk with adb over usb (not wifi) enabled? Thank you in advance.

cceerrtt said:
for some phones it is possible to buy usb to audio jack converter, e.g.
http://www.amazon.com/Headphones-Ea...6?s=electronics&ie=UTF8&qid=1327504575&sr=1-6
I don't know how much effort and changes is needed on kernel side to make it work though.
Click to expand...
Click to collapse
Those are not applicable, since they aren't actually connected to the USB port. On some phones, the USB "plug" is modified to connect with extra pins -- which carry audio signal.

cceerrtt said:
Do I need to copy all three binaries? Also, could you prepare uRamdisk with adb over usb (not wifi) enabled? Thank you in advance.
Click to expand...
Click to collapse
You need the kernel uImage and uRamdisk files, init is already included.
As far as adb over usb is concerned, it's a bit pointless since there is only one usb receptacle, so you can either connect with adb over usb or connect some usb device, but not both at the same time.
That's why wifi makes more sense.

verygreen said:
Should be possible, but would require external power for the bt dongle I would think.
Click to expand...
Click to collapse
BT USB dongle consumes almost same as USB mouse
http://www.tomsguide.com/us/squeezing-more-life-out-of-your-notebook,review-583-26.html
Since USB mouse is working, BT USB might be feasible as well...

verygreen said:
You need the kernel uImage and uRamdisk files, init is already included.
As far as adb over usb is concerned, it's a bit pointless since there is only one usb receptacle, so you can either connect with adb over usb or connect some usb device, but not both at the same time.
That's why wifi makes more sense.
Click to expand...
Click to collapse
My point is that you don't need wireless access point with adb over usb. It is also more secure than adb over wifi with lower power consumption. Whenewer I need adb over wifi, I can enable it using one adb command. Moreover, using both adb and keyboard attached to nook would not be very frequent scenario (at least in my case).

Thiso said:
BT USB dongle consumes almost same as USB mouse
http://www.tomsguide.com/us/squeezing-more-life-out-of-your-notebook,review-583-26.html
Since USB mouse is working, BT USB might be feasible as well...
Click to expand...
Click to collapse
I've tried a few BT dongles and they can be detected without external power, but I have yet to figure out if BT communications can be driven without external power as well.

USB Host Mode Swicth for Nook Simple Touch
Attached is a Nook Simple Touch version of verygreens USB Host Mode switching app.
Requires properly installed "su" in /system/bin
Let me know if there are problems.

Let's hope so. But I have good hopes as BT intention is to be low power communication. In the post I was referring to earlier, the power communication of BT in use was similar to USB mouse in use...
Sent from my GT-I8150 using xda premium

Would this cable work for host? I've had cables refuse to work with other devices for no apparent reason before, and I don't really want to order something that won't work.
http://www.amazon.com/female-Micro-male-Cable-Adapter/dp/B005GI2VMG/ref=pd_vtp_e_77

TorimuNooter
I'll try to get this included in my TorimuNooter root! Maybe version 0.5 I'm working on 0.4 right now and I can't include your USB host support because it's not yet complete, but I will try to implement it as soon as I can.
Good work!

@Googie2149: Any standard USB cable will work as well as any other.
The ID pin on the micro USB connector on the Nook is not going anywhere so a special OTG cable is not required.
I loaded in the new uImage and uRamdisk and things act more consistently, but I still can't get a keyboard to work.
Neither of the two utilities out there seem to work correctly for me. I do have su installed. I have had more success with simple commands
Code:
echo host > /sys/devices/platform/musb_hdrc/mode
echo peripheral > /sys/devices/platform/musb_hdrc/mode
cat /sys/devices/platform/musb_hdrc/mode
One thing is clear; the Nook adheres to the USB standard for supplying power, that is, it supplies it for 100 millisecs and if the peripheral signals back correctly it continues to supply it. Issuing a host command cause the red LED to flash for about a 1/10 of a second. Supplying power on the red wire is not necessary for host communication.
My setup has a powered hub and a cable with the red lead not carried through. I can issue a host command but it never seems to communicate. The status reads back "a_wait_vrise".
Does anybody have any insight into the FSM to say what is going on?

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

[Q] Pairing bluetooth devices to USB bluetooth (not the internal bluetooth)

I have been trying to connect a bluetooth headset to a Class 1 bluetooth USB dongle (connected to my Nexus 7). I wanted to use the Class 1 USB bluetooth instead of the built-in bluetooth for the range. In short, using the Nexus as an bluetooth mp3 player which I don't need to have relatively close all the time.
I followed this forum's rooting guide and successfully unlocked/rooted the Nexus. I plugged the USB bluetooth in via an OTG cable and the light comes on (good start). Using a terminal, dmesg has the USB's details so I'm assuming the kernel has the appropriate module installed at the time. I used the USB Host Controller app and was able to see the device listed.
This is as far as I've been able to go. I don't have hcitools, hciconfig or hiid available to take this further. Another forum provided these 3 for installation however, when I tried running them, an error came up saying libbluetooth.so could not be found.
I'm unaware of an app like Linux's Blueman which could let me choose between bluetooth devices (the USB and internal) so I'll probably need to do this via command line.
Can anyone help me out with this?

shlape said:
I have been trying to connect a bluetooth headset to a Class 1 bluetooth USB dongle (connected to my Nexus 7). I wanted to use the Class 1 USB bluetooth instead of the built-in bluetooth for the range. In short, using the Nexus as an bluetooth mp3 player which I don't need to have relatively close all the time.
I followed this forum's rooting guide and successfully unlocked/rooted the Nexus. I plugged the USB bluetooth in via an OTG cable and the light comes on (good start). Using a terminal, dmesg has the USB's details so I'm assuming the kernel has the appropriate module installed at the time. I used the USB Host Controller app and was able to see the device listed.
This is as far as I've been able to go. I don't have hcitools, hciconfig or hiid available to take this further. Another forum provided these 3 for installation however, when I tried running them, an error came up saying libbluetooth.so could not be found.
I'm unaware of an app like Linux's Blueman which could let me choose between bluetooth devices (the USB and internal) so I'll probably need to do this via command line.
Can anyone help me out with this?
Click to expand...
Click to collapse
*bump*
Short version of my original question: How do I switch from the in-build bluetooth to a USB bluetooth dongle?

Music in the Car

Hey guys,
I just bought a Pioneer stereo system that supports Android MTP and it claims that it can read Android devices with version 4.0 and higher that use MTP.
But for the life of it, I cannot seem to get it to detect my m8.
I'm not sure if it's the phone? or the player... i've got a hunch its the phone... but who knows..
I've tried using drive droid to set the usb settings but nothing has worked so far...
This is the model of stereo I've bought: http://www.pioneer.com.au/au/products/DEH-X2650UI/print.html
I know i can just use the AUX cable but i just wanna try this MTP thing out...
any help would be greatly appreciated!

Support for various devices (like car stereos) for things like Bluetooth and USB has always been a bit iffy. It would not be surprising to see MTP support to similarly have patchy compatibility.
Unfortunately, such issues can also be difficult to resolve, or even troubleshoot.