Difference between revisions of "TV Output"
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Revision as of 10:39, 29 March 2008
How-To use the SVideo output of the APF9328DevFull
The DevFull is equipped with a SVideo output which can be used to connect a TV to the board.
Contents
Tool installation
Instead of using a real driver, a simple tool (CH7024) has been written to configure the SVideo controller.
make menuconfig -> package selection target -> Hardware handling / blockdevices and filesystem maintenance -> ch7024ctrl make
Once compiled, you will see a ch7024 program in the /usr/bin directory of your rootfs.
Configuration
In order to program the right parameters in the CH7024, configuration files (.conf) are used.
They are simple text files containing the register values of the CH7024 for a given configuration.
Depending on your requirements, you have to use the right configuration file.
copy the ch424x283.conf (armadeus/buildroot/build_arm_nofpu/ch7024ctrl-1.0/ ) in the /usr/bin directory of the APF9328 rootfs.
Starting the tool
cd /usr/bin ch7024 configurationFileName.conf (ie: ch7024 ch424x283.conf)
Changing SVideo parameters
Changing the SVideo parameters is not easy due to several PLL parameters which have to be fine tuned. An external tool (running only under Windows :( )is required. As the documentation for this component is restricted to registered users (no other choice :( ), please contact us if you need informations.
