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DLP9000: Adding images into flash memory

jiayun liu
Prodigy 80 points
Part Number: DLP9000
Other Parts Discussed in Thread: DLPC900

Currently I am following the manual to add images into the flash memory. However, I do not understand what each step is doing. I was hoping to clarify what the below steps are so I can know which steps can be skipped.

  1. Choose the firmware, check 'Clear all existing pattern' and click 'Update Firmware'
  2. Choose the generated firmware, load the images in 'Pre-stored Pattern mode'. Enter parameters like exposure and dark time then click 'Update Firmware'
  3. Choose the generated firmware and Upload

What is happening when I click 'Update Firmware'? What is the difference between the first and second generated firmware? Can I skip the first step?

I have another question regarding step 2 here. How does the parameters that I entered in step 2 affect the images? If I send command to the DMD to enter Pre-stored pattern mode, don't I have to specify the exposure time and all? If I am sending trigger to change the patterns, does the parameters entered here affect anything?

  • 0
    TI__Intellectual 1670 points

    Jiayun,

    "What is happening when I click 'Update Firmware'? What is the difference between the first and second generated firmware? Can I skip the first step?"
    In step 1, you are clearing the existing patterns from the selected FW. If you do not have any images in your FW, you can skip this step. You can also append the images to existing ones. See section 7.9.1.2 in DLPC900 Single EVM User guide.

    In step 2, you are adding image data and image information, mainly the bit depth. These information(image data, bit-depth of each, total number of images) are required for the controller to store the patterns as 24-bit composite image.

    If I am sending trigger to change the patterns, does the parameters entered here affect anything?
    No. The exposure times and dark times given here will not affect your trigger.

    I hope this helps you understand 

    Thank you,
    Regards,
    Aishwarya

  • 0 in reply to Aishwarya K Aithal
    Prodigy 80 points
    Aishwarya K Aithal said:
    In step 1, you are clearing the existing patterns from the selected FW.

    The patterns are cleared once I click 'Update Firmware'? What is this firmware that is generated after I click 'Update Firmware'?

    Just to be sure, you mean that the display parameters will ultimately be controlled by the 'Pattern Display LUT Definition' command right? So are there any use for these parameters that were defined when first adding into the flash?

  • +1 in reply to jiayun liu
    TI__Intellectual 1670 points

    Hello Jiayun,

    I apologize for the late response.

    "The patterns are cleared once I click 'Update Firmware'? What is this firmware that is generated after I click 'Update Firmware'?"
    I am not sure I understand this question. When you select 'Clear existing patterns' and 'Update Firmware', the new firmware(FW) image created will have cleared all the previously stored patterns. You can check this by looking at the before and after FW image size.

    "Just to be sure, you mean that the display parameters will ultimately be controlled by the 'Pattern Display LUT Definition' command right? So are there any use for these parameters that were defined when first adding into the flash?"
    Yes. Only the bit-depth and the image compression type for each image is essential. As stated earlier and here, these two information is required to store the patterns as a 24-bit composite image. Rest of the parameters are not used.

    Thank you.

    Regards,
    Aishwarya