Difference between revisions of "Example brightness"
(→Using brightness) |
|||
| Line 34: | Line 34: | ||
===Using <code>brightness</code>=== | ===Using <code>brightness</code>=== | ||
| − | + | From the terminal, first set the DISPLAY variable. | |
export DISPLAY=:0.0 | export DISPLAY=:0.0 | ||
Revision as of 11:14, 27 December 2013
This is a guide to the brightness C example project included in the EMAC OE SDK.
This is a simple backlight-brightness control. It's written for the EMAC PPC-E7 and SoM-9307 but it will probably run on anything with a backlight. It implements a slider application in GTK+ that directly controls the backlight through its sysfs interface. It has been tested under Xfbdev/Matchbox.
The brightness project builds one executable: brightness.
Contents
Opening, Building and Uploading the Project Files
1. Open the C/C++ editing perspective.
stub
2. Open the project files.
stub
3. Build the project.
stub
4. Upload the executables to the target system.
stub
Usage and Behavior
The brightness C example project creates a GTK+ UI for controlling the backlight-brightness. It gives us a slider, a spinner and a textfield.
Hardware Requirements
The brightness C example project is written for the EMAC PPC-E7 and SoM-9307 but it will probably run on anything with a backlight.
Using brightness
From the terminal, first set the DISPLAY variable.
export DISPLAY=:0.0
Then run the brightness C executable.
./brightness
