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Problem for getting CMOS data

ellen wang
Intellectual 635 points
Other Parts Discussed in Thread: TVP5146

HI:

     I'm developing a system using a CMOS  sensor MT9P001 (aptina) .What I want to perform is to connect the coms output signal (8-bit_cmos_data[7:0] , Hsync , Vsync ,PixelCLK ) to the DM6437 board and output the signal on DAC pin. Before this case ,I've tried to use the video loopback example code , connect to the external DV (ntsc),and output the video on DAC pin connected to a LCD monitor .It's works.

   Now , I want to using the original raw data to display in the same way . I  have to connect  the coms output signal (8-bit_cmos_data[7:0] , Hsync , Vsync ,PixelCLK ) to the   DC_P1 video_expansion on DM6437 board .In this way ,I need to use the VPFE( CCDC  and Preview engine ) to transform the raw data into YUV and sent to VPBE  ,right ?

  So far ,I have configure the registers for CCDC and Preview engine .However ,I just can't see the correct display on LCD ~~~help....

Perhaps there're some register setting problem that I don't find . Could you give me some advise ?

  • 0
    Genius 3575 points

    Take a look at the "video_preview" example that came with the dvsdk for the evmdm6437.  That project should do what you want.  Setting up the previewer is a daunting task without a working example to start with.

  • 0 in reply to MattLipsey
    Intellectual 635 points

    Thanks a lot .

     

    Now I am dealing with this program , and I find there are many configurations in video_preview.

    However , i don't need the video decoder TVP5146 ,what I need is bayer patten raw data input to CCDC and directly output to preview engine ,right ?

     

    There are three default setting in the program :

    VID_PARAMS_TVP5146_DEFAULT ;   (should I do the setting ? I don't need TVP5146 .)

    VID_PARAMS_CCDC_DEFAULT_D1 ; (I should configure this ,for it original input setting is YCbCr)

    VID_PARAMS_OSD_DEFAULT_D1; (It seems I don't have to change it)

     

    After configuration , and run the program ,then I can see the display ? (Sorry , I'm a beginner....)

     Is that right  to connect the coms signal to DC_P1 video_expansion on DM6437 board ? does it work ?