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External Frame Syncing and Downloading Images to the Light Commander

I have two questions about the light commander, and I'm sorry if they're basic. I have very recently started using the module
1. I want to trigger the light commander with an external trigger (3.3V).  Where does that triggering voltage go on the light commander? 
2. I have successfully downloaded the software for the light commander. However, I have noticed that when I try to download images into its static image buffer, it only allows me to download them one at a time. Is there a way I can download many images automatically (I need to download maybe around 1000 images)
  • I have tried moving from just using the provided software to coding using the API - however, I still get an error.

    I use the DLP_Img_DownloadBitplanePatternToExtMem command to download a bitplane into external memory (in this case, simply one binary image, however I will eventually extend it to many binary images).

    Then I try to initialize the LUT using the command DLP_RegIO_WriteImageOrderLut(1, 0, 1). (given that I have only written one image to memory)

    However, although this compiles and builds correctly, when I run it on command prompt, it outputs

    " ***ERROR - Request packet has invalid CMD2 value "

    any idea what i may be doing wrong?

    and is there a way to just accomplish this only using the provided GUI software?

  • Hi Shwetadwip Chowdhury,

    Welcome to DLP&MEMS forum.

    It is always suggested to start with provide GUI control software and then developing customized application. You should be able to perform the action using GUI, refer to userguide for step by step procedure to select patterns and upload on the hardware.

    The GUI control has the batchfile interface where in which you can develop text based script file and run from it. There is pdf document "DLP® LightCommander™ Control Software User Manual Software Documentation" which can be seen after installing the software, I suggest you to go through it once.

    With respect to creating sample apps there are example C projects you can compile and run on the hardware. Note the control software and library supported are run in 32bit mode. Download example from here DLPR200APP http://www.ti.com/tool/dlpr200

    Regards,

    Sanjeev

     

  • Hi,

    1. There are two trigger inputs to the hardware. You need to locate Connector J505 on the harware Pin#4 EXP_CON_SYNC_IN0 takes in 3.3V trigger input pulses.While Pin#10 EXP_CON_SYNC_IN1 takes 1.8V trigger pulses. You can download schematics from LogicPD website http://www.logicpd.com/products/application-platforms/dlp-lightcommander-development-kit/ after registering your kit details.

    2. Yes, you can create simple application to download in bulk. Or have a batchfile written to download the images.

    Regards,

    Sanjeev