Okay, I suppose we could post this attachment with KUAL too, but here it is (for relevancy). Extract the file to your kindle. It expands into:
extensions/frontlight_control/config.xml
extensions/frontlight_control/menu.json
menu.json:
PHP Code:
{
"items": [
{
"name": "Frontlight Control",
"priority": 0,
"items": [
{"name": "Frontlight OFF", "priority": 1, "action": "echo 0 > /sys/devices/platform/imx-i2c.0/i2c-0/0-003c/max77696-bl.0/backlight/max77696-bl/brightness", "params": ""},
{"name": "Frontlight Low", "priority": 1, "action": "echo 1 > /sys/devices/platform/imx-i2c.0/i2c-0/0-003c/max77696-bl.0/backlight/max77696-bl/brightness", "params": ""},
{"name": "Frontlight Medium", "priority": 1, "action": "echo 500 > /sys/devices/platform/imx-i2c.0/i2c-0/0-003c/max77696-bl.0/backlight/max77696-bl/brightness", "params": ""},
{"name": "Frontlight High", "priority": 1, "action": "echo 999 > /sys/devices/platform/imx-i2c.0/i2c-0/0-003c/max77696-bl.0/backlight/max77696-bl/brightness", "params": ""}
]
}
]
}
config.xml:
PHP Code:
<?xml version="1.0" encoding="UTF-8"?>
<extension>
<information>
<name>Frontlight Control</name>
<version>1.0</version>
<author>geekmaster</author>
<id>pw_led_off</id>
</information>
<menus>
<menu type="json" dynamic="true">menu.json</menu>
</menus>
</extension>
I tested it on my PW2 and my PW3, in a very dark room, and it does indeed turn the frontlight completely off (when that option is selected). It also provides options for minimum brightness (1), medium brightness (500) , and maximum brightness (999).
Beware that when you kindle resumes from screensaver mode, it returns to whatever brightness was last set with the control panel slider, so the framework must be storing it somewhere. There may be another method of controlling brightness that uses that value instead, but then we may be subject to the original minimum brightness level.
Enjoy!