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Internal Pattern scan direction

PAUL YANG
Prodigy 30 points

Hi, I have just bought a DLP LIGHTCRAFTTER, from its SPEC, you

can send the data to the mDDR, then it can have a max 96 (1 bit) pattern,

show @ max 4khz.

my question is: if I want to show the pattern cycle from 1,2,3 ... 96, then 96,95,94 ...2,1,

is there a command to do this, or have to go to the FPGA level to modify the code.

Thanks

Paul

  • 0
    TI__Genius 13235 points
    Hi Paul,

    Do you need all 96 patterns? If so, you will need to sequence back to pattern 1 and step through the 96 1-bit patterns in order. If your application could be achieved with 48 or less 1-bit patterns, you could fit them into the buffers in the order you mentioned.

    Thanks,
    Clinton
  • 0 in reply to Clinton Rodgers
    TI__Mastermind 30875 points
    Additonal -
    If there is no hard requirement on the pattern exposure you can define 1,2,3,---96, 96,95,94,...1 as one large sequence in Extended Pattern Sequence mode, only limiting factor is the pattern exposure must be > 18ms.
    Regards,
    Sanjeev
  • 0 in reply to Clinton Rodgers
    Prodigy 30 points
    Hi Clinton,
    thanks for your reply, exactly my app need to use on the max side of the DLP, 96 (1 bit) patterns @ 4khz. and reverse the pattern sequence after 1 cycle. my question is: for the Lightcraftter evkit, is there a software command or setting can set the pattern sequence, or I have to touch the FPGA code to modify by myself.
    rgds
    paul
  • 0 in reply to Sanjeev
    Prodigy 30 points
    Hi sanjeev,
    thanks for your reply, as my app need to run 96 pattern @ 4khz, and reverse the pattern sequence after 1 cycle, the extended pattern is only run 56hz. but the one large sequence is a good idea.
    my question is: for the Lightcraftter evkit, is there a software command or setting can set that pattern sequence, or I have to touch the FPGA code to modify by myself.
    rgds
    paul