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DLPC3478: Can the internal pattern streaming be running automatically after powered on?

Liming Chen
Prodigy 20 points
Part Number: DLPC3478

We are trying to use the internal streaming mode, but it seems that we have to connect the DLP to a computer and send the command via I2C port to run it. Is it possible to run the internal patterns automatically after we powered up the DLP and do not connect to a processor? 

I tried to use the batch files, but it confused me because it seems that there are still I2C commands in batch files. So does it means we have still to connect the DLP to a processor to run the batch files? 

  • 0
    TI__Expert 7035 points

    Hello User,

    There is a firmware update section in the Light Control GUI. That should allow for the system to start in your desired mode without external commands. There is an issue with this feature that we are investigating.

    Regards,

    John

  • 0 in reply to John McKnight
    Prodigy 20 points

    Hi John,

    Thanks for your reply.

    Could you let me know how to controller will interpret the command in the batch file loaded in the flash? I read the generated batch file and see that all commands are just I2C commands including the slave address and the system write/read command. So I am confused since if the commands will be loaded from the flash to the internal DRAM, why they still need the I2C address?

    Best,

    Liming

  • 0 in reply to Liming Chen
    TI__Genius 11565 points

    Hello Liming,

    Please allow us to look into this and get back to you by the middle of next week.

    Regards,

    Lori 

  • 0 in reply to Liming Chen
    TI__Genius 12785 points

    Hello Liming,

    To address your queries:

    Liming Chen said:
    Is it possible to run the internal patterns automatically after we powered up the DLP and do not connect to a processor? 

    At the moment this is not possible. We are hoping to give you this option soon, but there is no current timeline established for this support.

    Liming Chen said:
    So I am confused since if the commands will be loaded from the flash to the internal DRAM, why they still need the I2C address?

    Though the commands in the batch files loaded into the flash do not cross the I2C lines as they would when communicating via a host processor, they maintain the same command structure defined in Section 2.2 of the DLPC3478 Software Programmer's Guide. This done for simplicity. The controller in this case does not have to interpret commands from received from the SPI flash device according to a differing protocol and the programmer does not need to alter the command based on the method by which the controller receives instruction.

    Thank you for your business.

    Regards,

    Austin