RK3188 and MOD-VGA

Started by jacko, September 26, 2015, 11:47:06 am

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jacko

Is RK3188 working with MOD-VGA ?


LubOlimex

Hey jacko,

I remember we exchanged e-mails on the subject. Will copy part of our conversation here, in case somebody else has a similar question:

MOD-VGA can be used with RK3188-SOM-EVB as an additional video output with limited capabilites, but you would need to write the software for the communication between the boards.

Hardware-wise RK3188-SOM-EVB works with MOD-VGA. MOD-VGA can be connected to the UEXT port of RK3188-SOM-EVB. Software-wise - no. There is no ready-to-use example or demo. You would need to write the software for the SPI communication (MOD-VGA uses SPI interface for communication with the main board).

MOD-VGA would NOT be detected by Linux as a second VGA card. MOD-VGA is a very simple VGA adapter suitable for video output up to 400x300 pixels in 512 colors. It is mainly used as an extension for Arduino boards (whose small AVR microcontrollers generally lack any video output capabilities). Yet, I can see that it might be a good addition to RK31880-SOM-EVB as an additional video output with limited capabilities.


Best regards,
Lub/OLIMEX
Technical support and documentation manager at Olimex

Freire

Perhaps the best choice is to implement the solution LCD to VGA, that is used in the A13-olinuxino board or use the chip ADV7123  for the same purpose.