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DLPC7540EVM: I2C and DLP Composer tool

Mario Echenique
Prodigy 125 points
Part Number: DLPC7540EVM
Other Parts Discussed in Thread: DLP650TE, , DLPC7540

I have now 2x DLPC7540EVM using DLP650TE chip.

I use I2C IIC0 port to use commands like "Enable Image Flip" and "Write Image Gamma Lut" successfully.

Of course I had configure J64 with a jumper across pins 1&2 to use IIC0 port.

For some very strange reason in non of my 2 DLP systems 0x34 address worked. I tried 0x1A address and that works. I don't have an idea why.

In the DLPC7540 programmers guide "dlpu082b.pdf" page 11, section "15.2 I2C Target" says:

<<It is possible to change the device address to any other desired value using DLP Composer tool. >>

Where do I download the "DLP Composer tool", and how can I connect it to my DLPC7540EVM?

  • 0
    TI__Genius 11915 points

    Hello Mario,

    Could you help me understand your setup hooked to the IIC0 port? There should be I2C signals coming from a USB-I2C Bridge device, is this the case?

    How were you able to find the 0x1A address and where are you seeing this address displayed - maybe a screengrab could give clarification?

    Unfortunately the DLP Composer tool is not released to the public. This is why I'm confused how your address could have changed to 0x1A.

    Best,

    Aaron B

  • 0
    TI__Genius 11915 points

    Hello Mario,

    I will close out this thread as we have not received an additional response.

    Hopefully you were able to fix your problem, if not feel free to open another thread.

    Best,

    Aaron B