This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

HDMI INPUT

I have been trying to display the HDMI input with no luck. I have a LightCrafter 4500 connected to my laptop. Since I cant direct connect the HDMI connector I have an adapter to Display port. I am running LightCrafter GUI Version 1.2. Both the laptop and GUI detect the LightCrafter 4500. I am able to configure the laptop to to use the projector but nothing is ever displayed on the projector. I believe its something Im doing or not. Im able to change the images that are stored locally on the LC. Able to set the LED's. But still not 100% sure on how to set the LC to use and project the image from the HDMI input. Is there any detailed step by step on how to configure the HDMI input? Or does LC able to autodetect?

  • Hi Monito,

    The LightCrafter 4500 is a manually controlled device. By default, when the EVM powers up it enters Video Mode which displays the To use the video port (through the HDMI connector) and display a 24bpp RGB video stream. If a solution file has been added to the firmware, the device will go into whichever mode is dictated by the solution after initializing. 

    Are you interested in projecting a standard RGB888 video or a different pattern sequence? To project a standard video sequence follow these instructions:

    1. Connect the EVM to the computer and wait for the GUI to say it is connected
    2. Set "Operating Mode" to "Video Mode"
    3. Click the "Video Mode" tab
    4. In the "Input Configuration" settings select the following
      1. Parallel RGB
      2. 24 BITS
    5. Click "Set"

    If you want to project a custom pattern sequence using the video port, follow these instructions:

    1. Connect the EVM to the computer and wait for the GUI to say it is connected
    2. Set "Operating Mode" to "Pattern Sequence"
    3. Click the "Pattern Sequence" tab
    4. Set "Pattern Source" to "Video port"
      1. Note that the "Trigger Mode" will automatically change to "Vsync"
    5. Set the "Internal Trigger (us)" to the desired number of usecs between the start of each pattern
    6. Set the "Pattern Exposure (us)" to the desired number of usecs to expose each pattern for
      1. Note that the "Internal Trigger" and "Pattern Exposure" can be equal, but if they are different the "Internal Trigger" time must be at least 230us longer than the exposure.
      2. Please reference Table 4-1 "Allowable Pattern Combinations" from the User's Guide  to make sure the minimum exposure time is met for the pattern with the largest bit depth.
    7. Set "Vsync period (us)" to whatever your video source is outputting. (i.e. 60Hz video streaming would be 16667 usecs)
    8. Add the individual patterns to your sequence
      1. Select the color
      2. Leave frame index at 0, unless you desire a more complicated sequence. 
      3. Select the bit depth of the pattern
      4. Select the bitplane (i.e. G0, G1, ..., G7, R0, R1, ..., R7, B0, B1, ..., or B7)
        1. Note if the pattern bit depth is greater than one, multiple bitplanes will be selected at once. 
      5. If the exposure and trigger period are different check the "Clear DMD after exposure" option. If they are equal leave it unselected.
      6. Click "Add Pattern to Sequence"
    9. Click "Send"

    Please let me know if you need further assistance. The User's Guide and Programmer's Guide both go into good detail about pattern sequences.

    Best regards,

    Blair

  • Dear Blair,

              I have same problem from  HDMI input. I follow your suggest  first part 1~5 step to setup . It still can not  display image. it only display DLP 4500 logo. The hdmi input is from pandaboard 4500 hdmi output. Could your help me?

    BR,

    weng

     

  • Weng,

         Are you connecting the Pandaboard HDMI with a cable to the LightCrafter 4500 or are you connected with the LCD pins directly from the pandaboard to the LightCrafter 4500?  If you are connected with a cable, the "SYS_MUX_SELECT" pin control should be 0, if you are connected with the direct pinout, then you should set this to 1.

         Also, PandaBoard has two HDMI ports, but only one of them is "Video Out"  Ensure that you are connected to the right HDMI port if you are using a cable. 

       What revision of PandaBoard are you using (this may be pertinent if it is revision B3 and you are wiring directly).

    Brandon