Moto G LEDs Custom Controls

matmutant · Nov 24, 2014

Moto G LEDs Custom Controls

Playing With Notification LED

Original source <<< make sure you read the blog article before commenting ....

It's always cool to know at a glance that your device is charging without the need of lighting the screen, here is how:

Requirements :

Moto G (tested on XT1032)
Rooted
SU rights granted
adb if you want to monitor all this from a computer

Code:

#include <std_disclaimer.h>
/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards, BURNT LEDs,
* thermonuclear war, or you getting fired because the alarm app failed.
* YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
*/

in /sys/class/leds/charging/trigger we have these triggers available :

Code:

[none] bkl-trigger usb-online flash0_trigger torch_trigger mmc0 battery-charging-or-full battery-charging battery-full battery-charging-blink-full-solid bms-online

easy to change them using :

Code:

echo battery-charging >/sys/class/leds/charging/trigger

The same is available in /sys/class/leds/white/trigger, and /sys/class/leds/white/brightness allows to dim the LED, though :

During test i was able to show that using /sys/class/leds/charging/trigger ~~overrides any other trigger (if a notification comes, then it won't change the pattern)~~ After extended test, it turned out that MotoG also have two LEDs
[*]Though using /sys/class/leds/white/brightness allows to use 0~255 values to dimm the LED, and /sys/class/leds/white/trigger works; it is overridden by any incoming notification that set brightness back to 0.

edit : Current knowledg is :

/sys/class/leds/charging/trigger → first LED, can be set to on/blinking while charging, although at full brightness.

/sys/class/leds/white/trigger → second LED, can be dimmed, but the LED turns back off when a notification comes in.

For now, the best way is to set "first" LED (/sys/class/leds/charging/) for charging using dedicated trigger and keeping the "second" one to none and get both working together this way.
What we need is to find a way to dim the "first" LED

______________________________

Set at boot:
WARNING : if you fail this, you may screw up your device ... (keep a backup somewhere)

Create a blank file and name it like 99charging_LED-blink

paste the following in that file :

Code:

#!/system/bin/sh
# enabling charging LED blinking while charging
echo "battery-charging-blink-full-solid" >/sys/class/leds/charging/trigger
echo "1" >/sys/class/leds/charging/brightness

mount /etc/init.d as RW
Paste 99charging_LED-blink there
set permissions as -RWXR-XR-X
Open terminal emulator, and type :
Code:
```
su
sh /etc/init.d/99charging_LED-blink
```
Plug it to charger, it should start blinking ... if not, make sure everything is correctly set
Reboot
Enjoy!

______________________________

The above has only been tested on CM11
Here is the LED related Thread for MotoE

XDA:DevDB Information
Moto G notification LEDs Custom Controls, Tool/Utility for the Moto G

Contributors
matmutant

Version Information
Status: Testing

Created 2014-11-24
Last Updated 2014-12-15

matmutant · Nov 24, 2014

reserved

reserved

matmutant · Nov 24, 2014

reserved too

....

reversegear · Nov 24, 2014

@matmutant where were you so far we were missing you soo much
thanks for the mod

matmutant · Nov 24, 2014

reversegear said:
@matmutant where were you so far we were missing you soo much
thanks for the mod

I am always around here, though i don't post if un-needed, and i was out of idea regarding customizations :silly:

sfoot13 · Nov 24, 2014

Working! Good job! Thank you so much for this!

EDIT: Working on CM11 and CM12 (anerik).

josip-k · Nov 24, 2014

It would be cool if we could change the colors,and i think it would be possible..

Edit: sorry,i haven't read the blog -.-
BUT! I know you from the mini xperia's forums,i was an X8 user. I still have the old x8,and i was thinking,maybie we could make a hardware modification and swap the leds from X8 to Moto G? I have an old broken x8 at home,and the screen is broken but i think the led works. I haven't dissasembled my Moto G yet and i don't know if the led is hard sealed to the Motherboard or Speaker or camera..

matmutant · Nov 24, 2014

Totally useless, but still classy : you can make the screen blink using :

Code:

echo battery-charging-blink-full-solid >/sys/class/leds/lcd-backlight/trigger

:silly::silly::silly:

wijiji · Nov 25, 2014

I´m not sure what is this for.. :S

reversegear · Nov 25, 2014

wijiji said:
I´m not sure what is this for.. :S

Read, still dont understand read again

eddydc1 · Nov 25, 2014

Where is that second LED located?

matmutant · Nov 25, 2014

eddydc1 said:
Where is that second LED located?

in the same hole : i was able to show it on MotoE, and it should be similar on MotoG : here is the proof

matmutant · Nov 26, 2014

Latest discovery :
Using "bkl-trigger" as */charging/trigger allows you to get the LED on as long as the screen ("bkl" stands for backlight)

Code:

echo bkl-trigger >/sys/class/leds/charging/trigger

i understood this after reading that https://github.com/gokulnatha/GT-I9...tation/devicetree/bindings/leds/leds-qpnp.txt
>_<

matmutant · Nov 27, 2014

Why not setting this at boot?

Set at boot:
WARNING : if you fail this, you may screw up your device ... (keep a backup somewhere)

Create a blank file and name it like 99charging_LED-blink

paste the following in that file :

Code:

#!/system/bin/sh
# enabling charging LED blinking while charging
echo battery-charging-blink-full-solid >/sys/class/leds/charging/trigger
echo 1 >/sys/class/leds/charging/brightness

mount /etc/init.d as RW
Paste 99charging_LED-blink there
set permissions as -RWXR-XR-X
Open terminal emulator, and type :
Code:
```
su
sh /etc/init.d/99charging_LED-blink
```
Plug it to charger, it should start blinking ... if not, make sure everything is correctly set
Reboot
Enjoy!

S0bes · Nov 28, 2014

@matmutant thanks for interesting discovery

Can we somehow do the next thing
when notification comes leds both are active but the brighter one starts blinking?
like when you do the following commands:

Code:

echo battery-charging-blink-full-solid >/sys/class/leds/charging/trigger | echo 255 >/sys/class/leds/white/brightness

matmutant · Nov 28, 2014

S0bes said:
@matmutant thanks for interesting discovery
Can we somehow do the next thing
when notification comes leds both are active but the brighter one starts blinking?
like when you do the following commands:

Code:

echo battery-charging-blink-full-solid >/sys/class/leds/charging/trigger | echo 255 >/sys/class/leds/white/brightness

Not without modifying the HAL :cyclops: (same as for brightness)
or, maybe with a tasker routine that would echo when notification comes and then revert ... but it would have a huge footprint on performances

gnhuy91 · Nov 29, 2014

Thanks for sharing this! This thread not getting much love but i found it very interesting.
And btw, can we set any LED to on when the screen is turned on by wake gesture from custom kernel? I know it should be a kernel thing, though :/

vikasb32 · Nov 29, 2014

Is this work in moto g2? I don't have charging folder in Leds folder.

matmutant · Nov 29, 2014

vikasb32 said:
Is this work in moto go? I don't have charging folder in Leds folder.

Moto "Go"? which ROM and Model number?

You may try with /white/ instead, but any incoming notification will override and set brightness back to 0 (that's what i've experienced on my Falcon XT1032, on a Peregrine XT1039 and on a Condor XT1022)

vikasb32 · Nov 29, 2014

matmutant said:
Moto "Go"? which ROM and Model number?

You may try with /white/ instead, but any incoming notification will override and set brightness back to 0 (that's what i've experienced on my Falcon XT1032, on a Peregrine XT1039 and on a Condor XT1022)

Sorry moto g 2nd gen

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