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DLP2021-Q1: DLP2021 EVM SPI FLASH Real time data updates

hui_zhu
Prodigy 110 points
Part Number: DLP2021-Q1
Other Parts Discussed in Thread: DLP2021LEQ1EVM, DLP2021AM263Q1EVM

Tool/software:

I am using the DLP2021LEQ1EVM evaluation module and I want to receive video data through the MCU, and then send the video data to the SPI FLASH storage on the EVM through the MCU. Afterwards, the EVM can control the DMD display. However, according to the operation manual, updated images or videos need to be built on a computer using DLP COMPOSER. So I won't be able to complete real-time online updates. May I ask how to update the video data in SPI FLASH online in real-time for DMD display.

thanks.

  • 0
    TI__Expert 6830 points

    Hi Hui,

    I've assigned this ticket to one of my colleagues who should be able to help you in the next day or so. Thanks!

    Regards,
    Michael Ly

  • 0 in reply to Michael Ly
    Prodigy 110 points

    Thank you, looking forward to your help

  • 0 in reply to hui_zhu
    TI__Prodigy 725 points

    Hello Hui Zhu,
    For the DLP2021LEQ1EVM , the image and video data is part of the Flash Binary file (which is generated using the Composer tool mentioned in the manual).
    If you need to update the image/video content, you need to generate a new Flash Binary file using the composer tool and then program this whole Flash Binary into the system's SPI Flash Memory.

    It won't be possible to just send raw image/video content in the .bmp/.mp4 format and store it on the SPI flash since it won't be in the correct format which is readable by the DMD.

    Regards,
    Siddharth

  • 0 in reply to Siddharth Choudhary
    Prodigy 110 points

    hi,Siddharth

    My current requirement is for the car to update the display animation of DLP2021 through OTA. How should I design the communication network? Can you provide a reference design?Can DLP2021AM263Q1EVM complete this task? Please provide a detailed workflow.

    Regards,

    Hui Zhu

  • 0 in reply to hui_zhu
    TI__Expert 6830 points

    Hi Hul Zhu,

    This may take us more a few more days to be able to answer. Please give us some time to discuss internally and get back to you.

    Thank you,
    Michael Ly

  • 0 in reply to Michael Ly
    Prodigy 110 points

    Thank you, looking forward to your help

  • 0 in reply to hui_zhu
    TI__Expert 6830 points

    Hi Hui,

    There have been some urgent matters that needed the team's attention the past week if you do not mind waiting until next week?  We are very sorry for the delay and hope we can get back to this soon.

    Regards,
    Michael Ly

  • 0 in reply to Michael Ly
    Prodigy 110 points

    hi Michael,

    Thank you for your reply. I look forward to your team‘s taking the time to answer my questions！

  • 0 in reply to hui_zhu
    TI__Prodigy 10 points

    Hi Hui Zhu,


    Thank you for your patience, Yes DLP2021AM263Q1EVM can complete this task, AM263x has a compatible Wi-fi module. For the OTA design of DLP2021AM263Q1EVM we can have a cloud-based architecture, The AM263x chip connects to the car's main computer using CAN-FD cables, while the car's built-in internet connection or an added automotive grade Wi-Fi module connects to cloud servers.

    In cloud the bmp to bit-plane conversion (there is a library bmp-bitplane conversion which gets the bit-planes from bmp) will happen along with the security module of digital signing and encryption for safer download. Cloud stores the secure .bin files. An OTA software in the vehicle's ECU authenticates the digital signature and decrypts the .bin files. A CAN or Ethernet controller transfers the decrypted bit-pane data to the DLP module.

    Alternatively, if you want direct Bluetooth OTA transfer or direct Wi-Fi transfer without cloud involvement, this is also possible. There is a BMP to bit-plane conversion library which you can use either in your mobile device or directly in the ECU to convert the BMP images to bit-planes. Make sure module being used for Bluetooth and Wi-Fi communication must be automotive grade to ensure reliability and compliance with automotive standards.

    If you wish to elaborate on your specific requirements we can discuss further.

    Regards,

    Abhishek

  • 0 in reply to Abhishek Abhishek
    TI__Expert 6830 points

    Hi  ,

    I'm going to close this thread because it looks like Abhishek has answered your question. If you think this is incorrect, you may open this thread back up within 14 days by adding another comment. Thank you.

    Regards,
    Michael Ly