(Need Root)Enable Automatic Light Sensor on Xperia Ray

arcatarc · Dec 5, 2011

I've found the way to enable ALS on Ray:
Using root explorer Change this value in hw_config.sh(inside system/etc):
# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 0,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 12900 > $dev/torch/max_current
To
# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 3,2,2,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 12900 > $dev/torch/max_current

Optional:replace als_curve.ini with the one i provide(is from arc):for me is better.
UPDATE:I've deleted the "als_curve.inf" from phone and changed
echo 3,2,2,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
to
echo 1,1,1,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]

now backlight seem more"wide range".

UPDATE: New CWM version added(InstallazioneALS_Xperia_Ray.zip):flash via recovery.

UPDATE:In official ics 4.0.4 i found the best way is to delete als_curve.inf (after change echo 1,1,1,0 )

UPDATE 08/November: for a fast response (istantaneous dim change) flash (Fast Response)InstallazioneALS_Xperia_Ray.zip

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memazy · Dec 5, 2011

where to find hw_config.sh in my system folder?

i found it, but...how to test?

arcatarc · Dec 5, 2011

memazy said:
where to find hw_config.sh in my system folder?

i found it, but...how to test?

You'll see the screen became more brigth when the ambient light rise,and viceversa..

aragog53 · Dec 5, 2011

memazy said:
where to find hw_config.sh in my system folder?

i found it, but...how to test?

Both of the files, hw_config.sh and als_curve.conf, are in /system/etc.

Sent from my ST18i using Tapatalk

coolkaas · Dec 5, 2011

arcatarc said:
I've found the way to enable ALS on Ray.

works! thanks.

Auto-bright stay more sensitive than before.

note: if you replace original als_curve.conf don't forget to set right permissions! rw-r-r. See it at original file before replacing.

zstoichev · Dec 5, 2011

Not working for me. Changed it to 3,2,2,0, rebooted and yet no avail.

Edit: !! One can check that light sensor is working fine through service menu (call *#*#7378423#*#*) -> Service tests -> Ambient light sensor. It shows the sensor output and one can play covering the sensor to see as value changes. So, the Ray has a working sensor after all, but it is not used?

coolkaas · Dec 6, 2011

zstoichev said:
So, the Ray has a working sensor after all, but it is not used?

sensor works. auto-brightness works. but slightly. you can take a torch and to light on a sensor, having covered the screen with a hand. screen will change brightness.

zstoichev · Dec 7, 2011

yeah, I saw it "working"... with a step or two at most. I am really disappointed by how SE implemented this. Even the brightness manual slider seams to have 15-16 steps, i.e. it's not smooth. I had a HTC Hero and auto-brightness/slider were flawless.

illus4 · Dec 7, 2011

It works. Good job~

dzqlx1993 · Dec 8, 2011

good job thanks!!!

efx_d3 · Dec 8, 2011

great !!! working perfect !

radek.kaplan · Dec 9, 2011

Q: how to enable ?

OK, sensor now working ( tested in service menu )

Unfortunately, I do not see the possibility of its use - especially for automatic brightness adjustment desktop. There is no option to set AUTOMATIC BRIGHTNESS. I tried a few widgets and even though I always set AUTO, never worked ...

How do in practice this now-functional sensor to use?

THX

efx_d3 · Dec 9, 2011

radek.kaplan said:
OK, sensor now working ( tested in service menu )

Unfortunately, I do not see the possibility of its use - especially for automatic brightness adjustment desktop. There is no option to set AUTOMATIC BRIGHTNESS. I tried a few widgets and even though I always set AUTO, never worked ...

How do in practice this now-functional sensor to use?

THX

Hi, to work well you must edit the file. sh, and replace with:http://xdaforums.com/attachment.php?attachmentid=805848&d=1323082156 , then, in the state switch, option 2 is what gives the brightness automatically, try putting a lamp and then covering the sensor with your finger and see as changing the brightness automatically, for me it worked great, greetings.

sorry bad English, I use google translator ñ_ñ

kiwi0033 · Dec 9, 2011

Can You do this for Mini Pro? In Mini Pro is another hw_config.sh and i dont know how to do it, my sensor doesnt work :/
http://dl.dropbox.com/u/12061271/hw_config.sh

Bazonga · Dec 9, 2011

efx_d3 said:
Hi, to work well you must edit the file. sh, and replace with:http://xdaforums.com/attachment.php?attachmentid=805848&d=1323082156 , then, in the state switch, option 2 is what gives the brightness automatically, try putting a lamp and then covering the sensor with your finger and see as changing the brightness automatically, for me it worked great, greetings.

sorry bad English, I use google translator ñ_ñ

I don't understand what you mean with this?

efx_d3 · Dec 9, 2011

Bazonga said:
I don't understand what you mean with this?

1.-arcatarc follow steps.
2.- edit file, Using root explorer Change this value in hw_config.sh(inside system/etc):
# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 0,0,0,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 12900 > $dev/torch/max_current
To
# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 3,2,2,0 > $dev/lcd-backlight/als/params #[gain],[filter_up],[filter_down],[offset]
echo 1 > $dev/lcd-backlight/als/enable #Sensor on/off. 1 = on, reg 90h
echo 12900 > $dev/torch/max_current[/LEFT]

IMPORTANT :Optional:replace als_curve.ini with the one i provide(is from arc):for me is better. (with this works best for me also)

link download : http://xdaforums.com/attachment.php?attachmentid=805848&d=1323082156

Both of the files, hw_config.sh and als_curve.conf, are in /system/etc.

to try:

1 .- Use light switch widget.
2 .- Second tap the widget ( i use extended control) is auto brightness.
3 .- Try a flashlight and see how it works the brightness automatically.

I hope it is clear to you, greetings.

I may not understand because I do not speak English, my language is Spanish and use a translator,

xda took months just by using the google translator

sorry for bad writing in English

Bazonga · Dec 10, 2011

Thanks, but I just don't understand which widget i have to use? What do you mean with "option 2"? I only have the brightness on/off switch and the state switch with airplane mode, gps, bluetooth etc but no brightness??

WillihAngga · Dec 11, 2011

THis thread make my Xray so good, thanks for your great post

masterflai · Dec 11, 2011

You're english is fine.

---------- Post added at 11:41 PM ---------- Previous post was at 11:38 PM ----------

Bazonga said:
Thanks, but I just don't understand which widget i have to use? What do you mean with "option 2"? I only have the brightness on/off switch and the state switch with airplane mode, gps, bluetooth etc but no brightness??

I suppose he means, that you can check the functionality by using a freeware widget like Backlight! Launcher: Set the display brightness to "A" (auto) and the sensor would adapt the brightness of your screen depending on your environment.

I checked the sensor in the service menu and it's running, but I didn't see a change when I use a flashlight or my hand.
Does it belong to a special widget?

I have choosen the Backlight on/off widget and changed it to off and on again and I used the named brightness widget.

hansip87 · Dec 12, 2011

I don't see any changes in automatic brightness with this trick and additional widget, even though the ALS did worked from device test. Help?

EDIT: It works now!

just having a wrong angle before when checking. as long as the Brightness is not set at the lowest then it would work. Thanks!

sent from my little red phone using XDA App

(Need Root)Enable Automatic Light Sensor on Xperia Ray

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