BLN Driver

Release 5 includes a new BLN driver with support for configuring on and off blink frequency.

CM9 includes native BLN support (Under Advanced Settings), or use BLN available on Google Play. BLN from Google Play may not work as the sysfs implementation was changed slightly.

Currently there are no apps to manage the distinct on/off blink frequency, defaults to 500msec. If you are familiar with the command line, try the following commands:

echo 500 2000 > /sys/class/misc/backlightnotification/blink_interval

First number is led on, and second is led off. If you prefer to set them both the same (and for backwards compatibility), this also works.

echo 500 > /sys/class/misc/backlightnotification/blink_interval

If you're building CM9 from source, apply the following gerrits for full functionality. http://review.cyanogenmod.com/#/c/19805/ http://review.cyanogenmod.com/#/c/19810/ http://review.cyanogenmod.com/#/c/19817/