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IWR6843: For sop configuration, is development mode a valid mode, and What are the detailed functions of this mode?

xu zheng
Prodigy 10 points
Part Number: IWR6843

Tool/software:

For the SOP mode of the xwr6843, the reference manual states that the only valid modes are 001(functional mode) and 101(flashing mode), as shown below

However, in the user guide of xwr6843 EVM (www.ti.com/.../swru546e.pdf), When describing the jumper configuration of mmwaveicbooster, a third mode 011(development mode) appears, as shown below. In addition, The mmwavestudio's user guide also mentions the development mode, which is called SOP2, This is in conflict with the reference manual, which is right?

I think the development mode may be a valid mode, because while collecting ADC data with mmwave studio+DCA1000 , it is necessary to use development mode, and  the other two modes can not work correctly. So I hope to confirm the following two points:

1 For xwr6843, is the development mode a valid mode, and is there any boot code corresponding to the development  mode inside the chip
2 What is the difference between development mode and the other two modes can not work correctly, It would be better to give some detailed description, and  is there any document about the development mode?

  • 0
    TI__Mastermind 21071 points

    Hello, 

    I'm not certain on the reason that this mode is not described in the TRM, but it is a valid mode and it is required for ADC data streaming with mmWave studio and the DCA1000. 

    Please give me a day to look into this and get back to you with more details and confirm your points.

    Best Regards,

    Josh

  • 0 in reply to Josh Dye
    Prodigy 10 points

    Hello,

    Thank you for the reply, Expect to get the details.

    Best Regards,

    xu

  • 0 in reply to xu zheng
    TI__Mastermind 21071 points

    Hello, 

    Thank you for your patience. I'm still waiting on some information from the bootloader team. Will update you by early next week. 

    Best Regards,

    Josh

  • +1 in reply to Josh Dye
    TI__Mastermind 21071 points

    Hi Xu, 

    Thank you for your patience. I have heard back internally and have some information to share.

    As I mentioned, this mode is required for use with mmWave Studio. When xWR6843 is set to SOP2 (debug/development mode), the bootloader (ROM) doesn’t execute. The processors are in halted state and RS232 is active. mmWaveStudio connects to the device over RS232 and downloads the firmware (MSS RFEVAL application and BSS) binaries into the respective MSS and BSS RAMs. It then unhalts the MSS RFEVAL application. This application enables the SPI connection with mmWaveStudio. RFPowerup button in mmWaveStudio sends a message to the MSS RFEVAL to unhalt the BSS. This completes the bootup sequence for both MSS and BSS on SOP2. Please let me know if you need more information. 

    Best Regards,

    Josh

  • 0 in reply to Josh Dye
    Prodigy 10 points

    Hi Josh,

    This is exactly what I needed, thank you very much!

    Best Regards,

    xu