Teensy "TV Out" adapter

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pmprog

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Hi,

I have an Odroid Go Advance, which runs a RockChip RK3326 SoC, with a 480x320 display. On top, it has a 10 pin header port, and a USB port, but no TV out. I also have a Teensy LC, Teensy 3.2 and a Teensy 4.0; and was thinking about how to make a "dock" which would combine a USB hub, audio port extension, and VGA out.

I came across qix67's uVGA library for producing a VGA signal on a Teensy 3.2 and 3.6. However, despite resolutions up to 800x600, none of the framebuffers list a vertical resolution greater than 300 (though the 703x300 resolution contains more pixels than 480x320).

I was wondering, could I use either the 3.2 or the 4.0 to receive a framebuffer from the OGA over the 10 pin port, and output it to a 640x480 display with the 480x320 contents?

I have no idea how to write a Linux framebuffer driver for the OGA, but I could always start with a userspace demo to just push framedata out of the pins to do some testing first

Regards,
pmprog
 
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