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i2c_over_vga [2018/05/18 13:46]
admin [VGA Breakout Board] 		i2c_over_vga [2018/05/18 14:44]
admin [Links]
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-==== VGA Breakout Board ====+==== I2C on the VGA Connector ====
 How to acces the I2C Bus:\\ How to acces the I2C Bus:\\
-[[:vga_to_i2c.jpg?400|]]\\+{{:vga_to_i2c.jpg?400|}}\\
 or use the or use the
 [[http://paperpcb.dernulleffekt.de/doku.php?id=vga_synthesizer:vga_breakout_board|VGA Breakout Board]].\\ [[http://paperpcb.dernulleffekt.de/doku.php?id=vga_synthesizer:vga_breakout_board|VGA Breakout Board]].\\
  
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 +==== Workaround ====
 +A workaround for Arch Linux:\\
 +
 +
 +Add the I2C kernel module:\\
 +   $ sudo modprobe i2c-dev
 +Check your I2C devices:\\
 +   $ ls /dev/
 +You should find somthing like:  **i2c-0  i2c-1  i2c-2 ...**\\ 
 +Install the I2C tools:\\
 +   $ sudo pacman -S i2c-tools
 +or on Debian:\\
 +   $ sudo apt-get install -y i2c-tools
 +Find your device:\\
 +   $ i2cdetect -l
 +The result could look like:\\
 +    i2c-1 unknown    i915 gmbus vga                  N/A
 +Looking for an I2C device
 +   $ sudo i2cdetect -y 1
 +It should tell you the address of your I2C device.\\
 +Now you can comunicate to your devices with these commands:\\
 +   $ i2cget
 +   $ i2cset
 +   $ i2cdump
 +
 +
 +
 ==== Links ==== ==== Links ====
-  * [[https://blog.atx.name/twilight-vga-i2c-breakout-board/]] 
   * [[http://flipthatbit.net/2011/04/interfacing-i2c-the-easy-way/]]   * [[http://flipthatbit.net/2011/04/interfacing-i2c-the-easy-way/]]
   * [[http://flipthatbit.net/2011/03/building-a-vga-monitor-ddc2-interface-tests/]]   * [[http://flipthatbit.net/2011/03/building-a-vga-monitor-ddc2-interface-tests/]]
 +  * [[https://blog.atx.name/twilight-vga-i2c-breakout-board/]]
 +  * [[http://www.righto.com/2018/03/reading-vga-monitors-configuration-data.html]]
   * [[http://www.boichat.ch/nicolas/ddcci/method.html]]   * [[http://www.boichat.ch/nicolas/ddcci/method.html]]
   * [[http://ddccontrol.sourceforge.net/index.html]]   * [[http://ddccontrol.sourceforge.net/index.html]]
  
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