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DLPDLCR2010EVM: A couple questions regarding the EVM and GUI

Daniel Webber
Prodigy 180 points

Part Number: DLPDLCR2010EVM

Hello,

I have three questions:

1) I want to run four EVM on a single computer. Is it possible to run four separate instances of the DLP Lightcrafter Display GUI on a single computer?

2) I want to project a unique still-frame image with each projector. Is the best solution to update the firmware on each projector with the desired image, or run a still image over HDMI using the video command?

3) Can the EVM module be powered on without an optical engine present?

Thank you,

Dan

  • 0
    TI__Mastermind 28005 points
    Daniel,

    Thanks for your inquiry. I'll try to address each of these questions individually.

    1. The DLP2010EVM uses a Cypress USB-I2C chip with an associated driver to faciliate communication with the LightCrafter GUI. In order to use multiple systems together, you need to differentiate between them in LightCrafter by Vendor ID and Product ID. By default the Cypress VID is 0x04B4. By using the Cypress USB configuration tool, you can reprogram the VID for each device such that each device is independent (for example, you could use 0x0001 and 0x0002). After you do this, you will also need to modify the standard Cypress USB drivers in order to redefine the expected Vendor ID. Once you set up both devices with independent Vendor IDs, you can use the dialogue above to select between two (or four) DLP devices independently. This can be a nontrivial process requiring the use of multiple custom Cypress drivers, but it is possible.

    www.cypress.com/.../usb-serial-software-development-kit
    community.cypress.com/.../DOC-10407

    2. If all you want is a still image updating the splash screen on each EVM is probably the easiest option. If you do this you do not need four HDMI interfaces. Ultimately, however, both methods would work.

    3. No, the optical engine must be present for the system to turn on.

    I hope this helps.

    Best Regards,
    Philippe Dollo
  • 0 in reply to Philippe Dollo
    Prodigy 180 points
    Hello Philippe,

    This answered all my questions perfectly. Thank you!

    Dan
  • 0 in reply to Philippe Dollo
    Prodigy 180 points
    One point of clarification: For your example, you say I could use VIDs of 0x0001 and 0x0002. Did you mean PIDs? The only reason I ask is the example in the link you provided defines their custom PID as 0x0001.
  • 0 in reply to Daniel Webber
    TI__Mastermind 28005 points
    Daniel,

    I found that you need to modify the VID in both the Cypress configuration and the driver for LightCrafter to tell the difference.

    I hope this helps.

    Best Regards,
    Philippe Dollo
  • 0 in reply to Philippe Dollo
    Prodigy 180 points
    Hello Philippe,

    I have one more question regarding the EVM:

    I would like to connect to the EVM to configure the VID/PID as per our earlier discussion. However, I won't be able to connect the optical engines for a few weeks. Why can I not turn on the EVM without the optical engine? Alternatively, do you have an alternative suggestion?

    Thank you again,
    Dan
  • 0 in reply to Daniel Webber
    TI__Mastermind 28005 points
    Daniel,

    The EVM checks the connected optical engine during the boot process. If the wrong optical engine is connected, or the optical engine is not connected properly, the system will not boot so as to not damage the DMD inside.

    Each EVM should come with an optical engine attached. Is there a particular reason yours does not have one? In any case you will need to connect the whole system together during boot.

    Best Regards,
    Philippe Dollo
  • 0 in reply to Philippe Dollo
    Prodigy 180 points
    Hello Philippe,

    We purchased the standalone EVM (no optical engine) as we are using a different optical engine than the standard Asia Optical one. However, our chosen optical engine does utilize the same DMD and LED source hence our choice in EVM.

    Regards,
    Dan
  • 0 in reply to Daniel Webber
    TI__Mastermind 28005 points
    Dan,

    Thanks for your explanation. Unfortunately, you will need to have the optical engine connected for the system to boot. I apologize for the inconvenience.

    Best Regards,
    Philippe Dollo