[Tutorial][XL][Dev] Control LED illumination via Sysfs topic

Introduction :

As we all know our Sony Xperia L has an awesome illuminating led's but according to the API provided by Sony it an be only controlled via the Illumination API in a fixed way of fading. But after roaming in root folders i found the files responsible for controlling led's via sysfs.

Some Images : :

 

Note : All of the above things need the device to be rooted.

Controlling stuffs :

We have 3 LEDS to control : 1 Red 1 Blue 1 Green (RGB). We can use RGB to make desired colours, Video on this thing soon explaining possibilities of the use of LEDS.

To turn on :

For Blue :

Code:

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echo 255 > /sys/class/leds/led:rgb_blue/brightness

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For Green :

Code:

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echo 255 > /sys/class/leds/led:rgb_green/brightness

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For Red :

Code:

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echo 255 > /sys/class/leds/led:rgb_red/brightness

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To turn off :

For Blue :

Code:

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echo 0 > /sys/class/leds/led:rgb_blue/brightness

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For Green :

Code:

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echo 0 > /sys/class/leds/led:rgb_green/brightness

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For Red :

Code:

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echo 0 > /sys/class/leds/led:rgb_red/brightness

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Example : Colour change effect

Code:

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echo 255 > /sys/class/leds/led:rgb_blue/brightness; sleep ; echo 255 > /sys/class/leds/led:rgb_green/brightness; sleep 1; echo 255 > /sys/class/leds/led:rgb_red/brightness; sleep 1;

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Now we can have developers code it in a synchronized loop to enable multiple effects

Have fun playing it with guys.

Hit that little cute thanks button if the post helped you :D

Attached Thumbnails