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Getting DM365 EVM to Configure out-of-box demo to accept Composite Video and Output Composite Video

Garfield Downes
Intellectual 330 points
Other Parts Discussed in Thread: TVP5146, TVP7002

I am trying to get the DM365 EVM to run the built in encode/decode demo in composite video mode.

 

In reading the online version of the Getting Started Guide (Mine never came with one) I have figured out that I need to:

- change SW5 to NTSC

- adjust the bootargs for video:

video=davincifb:vid0=OFF:vid1=OFF:osd0=720x576x16,4050K dm365_imp.oper_mode=0 davinci_capture.device_type=1 davinci_enc_mngr.ch0_output=COMPOSITE davinci_enc_mngr.ch0_mode=ntsc

As I think *davinci_capture.device_type = 1* is for the TPS5146 and I would be feeding in ATSC - HDTV 1280x720 p

Have I missed anything here?

 

Also, where can I find a fully printable PDF version of the GSG for the DM365 EVM?

  • 0
    TI__Mastermind 41665 points

    gknight said:
    As I think *davinci_capture.device_type = 1* is for the TPS5146 and I would be feeding in ATSC - HDTV 1280x720 p

    I am not sure why this is not covered in the PSP documentation (or where if it really is), but it looks like you are right, 1 maps to TVP5146, see excerpt below from davinci_vpfe.h, however this does not imply HDTV, but rather SDTV 720x480. To get HDTV 1280x720p you would need to use TVP7002, which is why the GSG suggests davinci_capture.device_type=4 for the bootargs.

    EDIT: I kind of missed this in my post, but I wanted to mention I am not sure how the demo code itself reacts to this change, it is possible that you will have to modify and rebuild the demo itself for composite input support.

    davinci_vpfe.h said:
    /* Define for device type to be passed in init */
    #define  MT9T001 0
    #define  TVP5146 1
    #define  MT9T031 2
    #define  MT9P031 3
    #define  TVP7002 4

    gknight said:
    Also, where can I find a fully printable PDF version of the GSG for the DM365 EVM?

     With the DM365 we are trying to migrate to online documentation with the wiki, the driving reason being that this ensures the GSG is as up to date as possible, as it can be edited and added to by anyone. With the old PDF process (as was used in the early beta DM365 EVMs) it could take months to get simple changes implemented and out the door, in addition to the updated document not necessarily even making it to the user base since the GSG was primarily shipped with the EVM and the DVSDK. The wiki itself is certainly printable, at least it seems to print ok for me, the wiki can be converted to PDF, though I am not sure this would help make it look much better printed.