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Modify/Disable HW Volume Buttons? [CM10]

Hey guys. I have found talk in various places about modifying the keylayout file(s) to change or disable HW button functionality.
I am running CM10 on my SGH-T869.
Within my /system/usr/keylayout/ directory I have a bunch of KL files but nothing that appears to govern the behavior of the device itself.
Files present include AVRCP.kl, Generic.kl, qwerty.kl, sec_keyboard.kl, and a bunch of Vendor_some_numbers.kl's.
All are commented,so, assuming the comments are correct, the vendor files are for various gaming input devices, like the Xbox 360, PS3, Logitech Racing Wheel, Logitech dual stick controller, etc, and an Apple BlueTooth keyboard.
The other files are for AVRCP control (glad I found this so I can disable WAKE on track change finally ), and also generic keyboard input devices.
All other devices I have found mods for have files with more specific / descriptive names like "sec_powerkey.lk", "sec_touchkey.kl", etc.
My goal is ideally to disable the HW volume buttons when the device has been locked, to prevent volume changes occuring accidentally. I'm fairly certain this sort of conditional disabling isn't possible, so I was planning on just globally disabling the volume up / down buttons. I use BlueTooth headphones with their own volume control, so my device's built-in volume is always left at maximum.
Any guidance or assistance on where to look would be most appreciated.

"Persist" app free in play store... locks volume while device is locked.. very helpful..

PX5 physical buttons remap?

Since all the units i had/have are buttonless, and i am about to buy one with buttons,
let me ask anyone with a unit with physical buttons
Do we have a way to customize the physical buttons?
Does MTCD tools able to sense the physical buttons as it does with the SWC?
I remember in PX3 we had MTC-keys.. has anyone tried that on px5?
i Know about factory setting remaping, but what i am interested is controlling 3d party apps like poweramp for example..

MTCDTools should work to remap the buttons
https://forum.xda-developers.com/an...ease-mtcdtools-control-music-players-t3436789

Thank you mate. I will have the unit in a few days to test..

Remap Home-button A-Media PX5 MTCD MX Head Unit Android 6.0.1
Hi guys,
My PX5 MTCD MX Head Unit has a strange problem. The Home-button doesn't activate the Android Homepage. Instead it activates the FM Radio when you press it the first time. Pressing it the second time activates the Music Player. Is this a Known-Error? Is there some kind of alternative software to remap the Home-button.
I have tried MTCD_Tools already. Unless I'm doing something wrong, I would say that my problem can't be solved with it.
Thanks.

Factory settings is where you will find the physical button mappings.
I have the homebutton long press turning off the display. Lots of options to be had and no need to use third party software to achieve your desired button config.

I have one more question about this. Is it possible to re-map all buttons? I ask because the Witson V5780-S has no home button and no DVD button. Instead it has prev/next buttons, which I do not need. So would it be possible to change these as well? Currently I am trying to figure out, which one to buy and this would be some hindrance.

Anyone found a working mtc key alternative for the px5 oreo devices?
On my MX unit i dont have any physical buttons and the radio panel mappings come from canbus and are fixed. Mtcd tools and factory settings dont recoqnize any presses....

also wonder if there is a double/triple press solution like in mtc-keys
Dave

Anyone?

marchnz said:
Factory settings is where you will find the physical button mappings.
I have the homebutton long press turning off the display. Lots of options to be had and no need to use third party software to achieve your desired button config.
Click to expand...
Click to collapse
I'd like to get back to this after buying a Dasaita Max6. Yes this works - partially. You can define a short and long press to the buttons, but only a handful of basic features. I'd like to bind the BAND button to my DAB+ app instead of the FM radio that I never use. That's not possible with the factory settings.
How can I bind a button to a specific app?

Bose321 said:
I'd like to get back to this after buying a Dasaita Max6. Yes this works - partially. You can define a short and long press to the buttons, but only a handful of basic features. I'd like to bind the BAND button to my DAB+ app instead of the FM radio that I never use. That's not possible with the factory settings.
How can I bind a button to a specific app?
Click to expand...
Click to collapse
Did you ever manage to get a work around for this?

volume control with buttonless MTCE

Hello all,
So I purchased a buttonless PX5:
https://www.aliexpress.com/item/And...32849648099.html?spm=a2g0s.9042311.0.0.qvQ36y
However, none of the Android widgets or volume buttons work to control the volume.
Only the little button off to the top right corner does anything.
I feel like I'm going to crash my car, constantly hunting for that thing.
Is there anyway to patch/hack this thing to respond to something like a virtual volume slider like this?
https://play.google.com/store/apps/details?id=com.clownface.volumeslider
Thanks!

Why do you need onscreen volume? Didnt you have a CAN and steering wheel controls? The volume control on HU is not the same as on smartphones. It has controlled by MCU board where android board sends special commands from the headunit service.

My car came with a sport package, which meant smaller diameter steering wheel and therefore no wheel controls
That being said, the sound slider via settings menu is indeed able to control the volume via onscreen controls. It just doesn't seem to respond to the normal android media controls, is there a way to link the two together?

Then the simplest way is to use infrared remote control (if your HU has it) or to buy universal resistive SWC and connect it to Key-wires.

xtracrispy said:
That being said, the sound slider via settings menu is indeed able to control the volume via onscreen controls. It just doesn't seem to respond to the normal android media controls, is there a way to link the two together?
Click to expand...
Click to collapse
The only way is to create your own service or automation that will send volume control broadcast intents to mcu.
For my MTCB it may be even a shell commands:
Code:
am broadcast -a com.microntek.irkeyDown --ei keyCode XX
where XX - 19 (volume up) or 27 (volume down).
You need to find this commands for your MTCE here and you will be able to use Tasker for your own service creation.
The second way is to write service on java. But you need a skill for that.

Found xposed-mtce-utils do the job. It has "a strip of volume control at the bottom of the screen".
https://forum.xda-developers.com/showpost.php?p=72103289&postcount=2

aluver said:
Found xposed-mtce-utils do the job. It has "a strip of volume control at the bottom of the screen".
https://forum.xda-developers.com/showpost.php?p=72103289&postcount=2
Click to expand...
Click to collapse
Thanks for the link! I'll definitely give this a shot.
Do you have any experience entering recovery mode on a deck that has absolutely no buttons?

xtracrispy said:
Thanks for the link! I'll definitely give this a shot.
Do you have any experience entering recovery mode on a deck that has absolutely no buttons?
Click to expand...
Click to collapse
Don't have a MTC unit but try this,
Install Terminal Emulator app, enter "reboot recovery"

pretty big fails on the trying front.
I've managed to buy a MTCE deck that has neither buttons or SD card slot with which to install malaysk rom the prescribed way.
Has anyone had luck with a pure download -> flash approach? If so, any instructions online?

xtracrispy said:
Has anyone had luck with a pure download -> flash approach? If so, any instructions online?
Click to expand...
Click to collapse
I believe it must update from usb-flash drive.
Volume up/down codes for your MTCE: 273 and 281.
You can now use Tasker to draw your own Up/Down arrows and set the shell commands for them (w/root).
Or you can use any usb keyboard or other usb-hid device and set the volume commands for buttons you wish.
Other key codes here https://forum.xda-developers.com/an...tcd-5-1-1-xposed-compatibility-t3380468/page2

Volume control workaround on buttonless HU
Hi this should help you which I posted on Car Launcher thread.
Seems we have the same HU except mine was sold by XTRONS.
Like many of you on this forum, I love the simple efficient GUI of Car Launcher AG, amazing work from the developer ! yet I have come to the frustration of volume control on bare HU like mine : PE88CMPL from XTRONS which has absolutely zero buttons at all.
So I went on eBay and bought "Car steering wheel remote control buttons wireless android gps navigation", connected it to Key 1/Key 2, Ground and acc 12V.
Programmed the buttons to volume up down mute and other useful functions such as back/home/gps/answer call/hang up and shutdown.
These setups are in the Car Steering Wheel area in settings.
Those buttons are super small and come with a 3M double face on the back and can be properly installed on the console at arm/finger reach.
I saws that JOYING sells a larger one that fits in cups holder "JOYING SWC Steering Wheel Controller for Android Universal Car GPS Stereo Radio" if you prefer that design.
Enjoy

Hello, i now that issue isn't from this thread but i need some help for use an usb knob that dont make nothing on a MCU of Spreadtrum SC9853I.
This multimedia knob change only the sound level of notifications. It's possible to make it work on MCU.
Thanks

PaulBorges said:
Hello, i now that issue isn't from this thread but i need some help for use an usb knob that dont make nothing on a MCU of Spreadtrum SC9853I.
This multimedia knob change only the sound level of notifications. It's possible to make it work on MCU.
Thanks
Click to expand...
Click to collapse
you're in the wrong forum, suggest searching for "SC9853I" and ask the question of the knowledgeable joying people.

Hi. Sorry for my google english.
I have -Px6 DSP 9 " MTEC_CHS buttonless with Android Pie- and I couldn't find (if any) a "Knobby volume control style" apk for volume control. I can't put a link from Google Play.
The idea is to touch the screen with 3 fingers (anywhere on the screen) and rotate your wrist to bring up the volume control and increase or decrease the volume. Like a home amp. Do you know of any MTCE that has it since I suppose it should be integrated into the MCU or some apk ?.
Thank you all

Rotary seek knob on head unit

Hi all,
After reading and searching on the forums I cannot find a solution for my problem.
I have a MTCE MX unit from ZNY with two phisical rotary knobs:
https://nl.aliexpress.com/item/32864796232.html
The left one is for volume, this is ok and works well.
But the right one only ajusts radio frequency, it has no other function.
In the factory menu I can remap all buttons and the button press of the rotary knobs, but I see no possibility for remapping the rotary function.
Has anyone an idea how to use this knob to skip through playlists or whathever else is possible to remap this knob.

Hi there.
I'm also interested in assigning a different function to the right knob. Have you found any ways to do that?

Assigning mute+screen off to a steering wheel key

Hello,
I was trying to assign „mute“ and „screen off“ to a single steering wheel key, i.e. if I press the key the device should mute and shut the screen off at once.
I have:
- Dasaita Max10 (px6)
- stock android 10 (march 21 version) rooted with magisk
- mcu 3.75
- mtcd tools
- Automagic
i couldn‘t manage to set any working volume or mute settings with automagic.
With mtcdtools I could use pause, but theres no option to turn the screen off.
with stock SWC-App I can assign screen off to a key, but not mute simultaneously.
I would very much appreciate any hints.
Thanks!
Apollon

What is the question

marchnz said:
What is the question
Click to expand...
Click to collapse
Well the question is, how I can assign mute + screen off to a single steering wheel key (alternatively pause + screen off)