(Need Root)Enable Automatic Light Sensor on Xperia Ray

arcatarc · Mar 30, 2012

I think they are the value the phone use before boot the system,like recovery.

Xperia-Ray · Mar 31, 2012

I have tried all you sugestted, but nothing works :-(

hansip87 · Mar 31, 2012

Xperia-Ray said:
I have tried all you sugestted, but nothing works :-(

Bring it to outside when it's bright at noon. Set the brightness to 25%, and play with your brightness sensor to see the result.

Xperia-Ray · Mar 31, 2012

hansip87 said:
Bring it to outside when it's bright at noon. Set the brightness to 25%, and play with your brightness sensor to see the result.

I have tried it all- nothing!

on stock settings it was working a little bit but now - nothing
going to restore to stock settings

jjdoctor · Apr 1, 2012

It's the hw_config.sh file guys... Check attachment of last post in my hybrid ROM thread...

4EST · Apr 2, 2012

works well enough for me (4pda firmware). Not instant, but fast enough

trankieu.com · Apr 2, 2012

good job

work nice!

i use Ray firm 0.62
i've set echo 1.1.1.0 and replace file als_curve

Please test it under strong light like as the sun ,you will see it different

j sta · Apr 5, 2012

Works for me. Put 3,1,1,0 and with brightness down to 20% can see difference plain. Even tried 6,1,1,0 but the screen been changing with a slight tilt of the phone from side to side - annoying, 3,1,1,0 is good. Thats tested in a room with a light on, will see tomorrow in daylight.

Sent from my ST18i using XDA

j sta · Apr 8, 2012

I think I accidentally changed something in the config while editing on the phone, I dont see it working anymore.
Could someone please copy and paste the whole text for me?
No jokes please

Sent from my ST18i using XDA

arcatarc · Apr 8, 2012

j sta said:
I think I accidentally changed something in the config while editing on the phone, I dont see it working anymore.
Could someone please copy and paste the whole text for me?
No jokes please

Sent from my ST18i using XDA

# Audio jack configuration
dev=/sys/devices/platform/simple_remote.0
echo 0,201,1600 > $dev/accessory_min_vals # default = 0,200,1600
echo 200,1599 > $dev/accessory_max_vals # default = 200,1600
echo 0,100,280,500,700 > $dev/button_min_vals # default = 0,100,300,600,700
echo 99,199,399,699,5000 > $dev/button_max_vals # default = 99,199,399,699,5000
echo 512 > $dev/btn_trig_period_freq # Button Period Freq(Hz) default = 512
echo 16 > $dev/btn_trig_period_time # Button Period Time(cycle) default = 16
echo 512 > $dev/btn_trig_hyst_freq # Button Hysteresis Freq(Hz) default = 512
echo 16 > $dev/btn_trig_hyst_time # Button Hysteresis Time(Cycle) default = 16
echo 500 > $dev/btn_trig_level # default = 500

# Proximity sensor configuration
dev=/sys/bus/i2c/devices/0-0054/
val_cycle=0
val_nburst=15
val_freq=0
val_threshold=1
val_filter=1

nv_param_loader 60240 prox_cal
val_calibrated=$?
case $val_calibrated in
1)
nv_param_loader 60240 threshold
val_threshold=$?
nv_param_loader 60240 rfilter
val_filter=$?
;;
esac

echo $val_cycle > $dev/cycle # Duration Cycle. Valid range is 0 - 3.
echo $val_nburst > $dev/nburst # Number of pulses in burst. Valid range is 0 - 15.
echo $val_freq > $dev/freq # Burst frequency. Valid range is 0 - 3.
echo $val_threshold > $dev/threshold # sensor threshold. Valid range is 0 - 15 (0.12V - 0.87V)
echo $val_filter > $dev/filter # RFilter. Valid range is 0 - 3.

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 1,1,1,0 > $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

# TI BQ275xx firmware loader
bq275xx_fwloader

#!/system/bin/sh
# Sd Fix

if [ -e /sys/devices/virtual/bdi/179:0/read_ahead_kb ]; then
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb
fi

if [ -e /sys/devices/virtual/bdi/default/read_ahead_kb ]; then
echo "2048" > /sys/devices/virtual/bdi/default/read_ahead_kb
fi

Sent from my ST18i using XDA App

j sta · Apr 9, 2012

Thanks arcatarc,
will have a look in a moment.

Edit.
Yes it worked, I was missing the bottom part:

#!/system/bin/sh
# Sd Fix

if [ -e /sys/devices/virtual/bdi/179:0/read_ahead_kb ]; then
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb
fi

if [ -e /sys/devices/virtual/bdi/default/read_ahead_kb ]; then
echo "2048" > /sys/devices/virtual/bdi/default/read_ahead_kb
fi

Thanks, fixed and happy

arcatarc · Apr 9, 2012

j sta said:
Thanks arcatarc,
will have a look in a moment.

Edit.
Yes it worked, I was missing the bottom part:

#!/system/bin/sh
# Sd Fix

if [ -e /sys/devices/virtual/bdi/179:0/read_ahead_kb ]; then
echo "2048" > /sys/devices/virtual/bdi/179:0/read_ahead_kb
fi

if [ -e /sys/devices/virtual/bdi/default/read_ahead_kb ]; then
echo "2048" > /sys/devices/virtual/bdi/default/read_ahead_kb
fi

Thanks, fixed and happy

I'm happy for you,but i think the problem was in another line,because this line are added by myself to increase sd card speed!

Sent from my ST18i using XDA App

j sta · Apr 13, 2012

Well, must have been something else so.
I wish I could comment on the card speed, I even tried a couple of sd tools from the market last week, cause was changing the stock to a larger one, but the apps were so so... No option of random speed test...

Anyways, thanks for that, ALS didn't work, now it does

Sent from my ST18i using XDA

Ray-Out · Apr 20, 2012

The following is valid for my ray with ICS:

ALS works even without changes although it is nearly unnoticable as it takes ages to go to the lowest value allowed by the current brightness settings.

I got the time it takes to react on changes in ambient light down to usable values using 0,2,4,0 and 0,1,2,0

Valid values for the 1st value seem to be 0 to 3, for second and third values they go from 0 to 7 and fourth value i kept at 0 as it would only make zero brightness brighter.

The setting on the attached image gives the widest range of brightness from about 16% to about 98% and corresponds to the 6th entry (line 7) of my ray's original als_curve.conf. 1 Step more will range from about 18% to 100% brightness. Everything above will only change the lowest brightness and always go up to 100% under bright light or sunlight. Settings below my setting will lower the low limit a bit per level and the upper limit gets down.

als_curve.conf explanation: first number must always be 1, second number is the low limit of brightness, the third number is the upper limit of brightness. The rest of the line defines the shape of the "curve".

I'm currently working on a als_curve.conf with a wide range of full-range settings to find some useful "shapes" to use a ray at the same brightness-setting at night and under sunlight.

qrim · Apr 22, 2012

Not working in my Ray. I use bootuv5 KERNEL, Repack4pda_6 ROM, I change 0,0,0,0 to 3,2,2,0 and save. Then I open again that fail and this showing 0,0,0,0!

Working, I forgot to delete the als_curve.conf file.

vlzkcbcb · Apr 23, 2012

can i get your files??

Ray-Out said:
The following is valid for my ray with ICS:

ALS works even without changes although it is nearly unnoticable as it takes ages to go to the lowest value allowed by the current brightness settings.

I got the time it takes to react on changes in ambient light down to usable values using 0,2,4,0 and 0,1,2,0

Valid values for the 1st value seem to be 0 to 3, for second and third values they go from 0 to 7 and fourth value i kept at 0 as it would only make zero brightness brighter.

The setting on the attached image gives the widest range of brightness from about 16% to about 98% and corresponds to the 6th entry (line 7) of my ray's original als_curve.conf. 1 Step more will range from about 18% to 100% brightness. Everything above will only change the lowest brightness and always go up to 100% under bright light or sunlight. Settings below my setting will lower the low limit a bit per level and the upper limit gets down.

als_curve.conf explanation: first number must always be 1, second number is the low limit of brightness, the third number is the upper limit of brightness. The rest of the line defines the shape of the "curve".

I'm currently working on a als_curve.conf with a wide range of full-range settings to find some useful "shapes" to use a ray at the same brightness-setting at night and under sunlight.

Can I get your files??

"als_curve.conf" and "hw_config.sh" for ICS.

Please??

j sta · Apr 23, 2012

Is there a mod to step the brightness better (smaller steps). As it is, it works fine - auto, but you know the way it skips and changes jerky. A 30 step mod like the one for volume?

Sent from my ST18i using XDA

Ray-Out · Apr 24, 2012

als_curve.conf is the original file from Nordic ICS Image.

The relevant part of my hw_config.sh

Code:

# LMU AS3676 Configuration
dev=/sys/devices/i2c-0/0-0040/leds/
echo 0,2,4,0 > $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

As everything is done in the LED-Controller i think changing the stepping itself is impossible but imho not needed. If the first value is at max (3) then even small changes in ambient brightness level change the value dramatically. This is the reason i left it at 0.
It is possible to check the value in service-menu under ambient light sensor. This value takes the 4 parameters into account and is the input to the current setting from als_curve.ini which in turn gives the brightness.

Edit: Still trying to find time to get the curves plotted.

Edit2: Analyzed the row for the Line corresponding to my brightness-setting:
Values are from sensors as readable using the service-menu.

Minimum Brightness is 41 for my setting.
Medium Brightness (127) is active for a value of 62.
It reaches maximum brightness (251) with a value of 150.

tmt2003@gmail.com · Apr 26, 2012

arcatarc said:
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.ini" 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".

what numbers in original neo or arc hw_config.sh files? and why sonyericsson don`t enable this function by default

iamviveksri · Apr 27, 2012

can anyone post a app for automatic brightness for the non - rooted Ray?
thanks!

(Need Root)Enable Automatic Light Sensor on Xperia Ray

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