2010-11-03 19:25:20     Setting BF526 with a scanner sensor through AD9822

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2010-11-03 19:25:20     Setting BF526 with a scanner sensor through AD9822

alireza ashani (UNITED STATES)

Message: 95532   

 

Hi,

 

I am a newbie to uClinux and Blackfin. I want to connect a contact image sensor to BF526 through digitizer AD9822.

 

Ad9822 is connected to the PPI port of BF526.

 

Does anyone know of a starting point to kick off the project? or previous experience with connecting AD9822 to BF526? Any reference to the driver or sample source code would be appreciated.

 

Thanks

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2010-11-03 22:51:00     Re: Setting BF526 with a scanner sensor through AD9822

Aaron Wu (CHINA)

Message: 95535   

 

  docs.blackfin.uclinux.org/doku.php?id=ppi    we have some information for the PPI Linux framework and some example code here

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2010-11-11 17:50:51     Re: Setting BF526 with a scanner sensor through AD9822

alireza ashani (UNITED STATES)

Message: 95786   

 

So apparently there is no driver for PPI? AD9822 doesn't use any frame_sync signal. Does anyone know of a PPI ADC alike component connected to Blackfin under uClinux?

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2010-11-11 23:10:28     Re: Setting BF526 with a scanner sensor through AD9822

Aaron Wu (CHINA)

Message: 95789   

 

PPI is a quite flexible module and we have implemented the following case on it, as mentioned in the last post which you may take as reference:

 

    frame_capture_device

    v4l_blackfin_camera

    framebuffer

 

For you detailed use case you may need to handle the MMRs to meet your special request.

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