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DM6446 sample code

Hello,

I am very new to Davinci and as well as media processors. I needed to do a basic level testing for the DM6446 by writing some sort of code for RGB888 output, like just generating sawtooth waveform which will be sufficient. The output of the RGB signals are interfaced to a DAC, I need to measure the waveform at DACO/P using Oscilloscope. But I have very short time (one week). I tried to find out any such code which gives some idea to how to start up but could get. 

I am not clear that it is required to configure VPBE of only with GPIO I can achieve this just like in conventional micro-controller.

Request if some one can help me sharing this code if already someone developed. Or please guide me what are the steps to be taken to write this application.

Thanks in advance. 

Regards,
Prabhu,