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Original question:

IWR6843ISK: Intermittent problem with Uniflash and IWR6843

IWR6843ISK: Uniflash issues with IWR6843

Shaun Sullivan
Prodigy 60 points
Part Number: IWR6843ISK
Other Parts Discussed in Thread: UNIFLASH, IWR6843

Hi I am having a horrible time getting this board to flash.  I know I have COM ports all set right because it worked once or twice, and when I put it in functional mode I can successfully run the MMWave Demo Visualizer. The problem is the hundreds of other times I have attempted to flash to no avail.  

When attempting to flash I have SOP 0 and 2 closed, I have power cycled, unplugged USB, NRST etc.  Every time it just locks up at the "Set Break Signal" step in the flashing process.

Here is the exact sequence I am executing when attempting to flash:

0. Jumper SOP2 

1. Unplug USB 

2. Power Cycle Board

3. Hit NRST

4. Plug In USB 

5. Confirm UART port in device Manager (Windows 10) also see other expected COM port 

6. Optionally Hit NRST  again (I have tried with and without this step)

7. Run Uniflash, select IWR6843 and UART COM Port, and .bin file

8. Optionally Hit NRST  again (Like #6, I have tried with and without this step)

9. Hit "Load Image"

Every time I get the following (see image below):  I have reproduced the issue on 2 boards,3 laptops, Uniflash 4.5, Uniflash 4.6, I have even generated the command line version and reproduced there.  I need to run the long range people counting demo for a test.  Is there any known workaround or fixes for this issue?  I have seen others have had the same issue as well.  I'm willing to try anything :)  Thanks!

  • 0
    TI__Guru 50240 points
    Hi Shaun,

    This is a good question. I will need to contact the designer of this board for support here. We'll try to have an answer for you early next week at the latest.


    Cheers,
    Akash
  • 0 in reply to Akash Gondalia
    TI__Mastermind 25825 points
    Hello,

    During the flashing process you need to ensure only one USB cable is connected to the Carrier board, i.e. XDS110 USB only. FTDI cable should not be connected. And you need to ensure all the previous instances of Uniflash components have been killed (e.g. FlashPythonSubprocess.exe).
    When attempting to flash you need to close SOP 0 and 2 and apply NRESET (by pressing the button ) and follow Uniflash flashing process.

    Thanks and regards,
    CHETHAN KUMAR Y.B.
  • 0 in reply to CHETHAN KUMAR Y.B.
    Prodigy 60 points

    Yes, funny I actually just figured it out myself yesterday - my whole issue was having 2 USB connections once I unplugged one of them and had just UART plugged in the procedure worked fine.  I suggest you guys make a note of that in docs that outline the flash procedure since it isn't obvious or documented, especially when they are totally different COM ports.

    Thanks for the reply.

  • 0 in reply to Shaun Sullivan
    TI__Mastermind 25825 points
    Hi Shaun,

    Thanks for confirming resolution of the problem. Also thanks for your constructive feedback.
    We will add this in our user-guide documentation.

    Thanks and regards,
    CHETHAN KUMAR Y.B.