2 Sinuous V80 death

Discussion in 'Issues' started by artisonore, May 5, 2021.

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  1. artisonore

    artisonore New Member

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    First of all, a greeting to all the users of the Forum.
    I have been following you for over a year and have 5 boxes with Arctic Fox installed. I state that I had successfully loaded Arctic Fox (200619 with NFE Tool 190718) on a Sinuous V80 (STM32) a few months ago and it worked perfectly. Since I got a second v80, also STM32, I wanted to do the same thing. And the problems began.
    After the firmware upload, the box went into safe mode, but it was no longer detected by Windows 10 (I tried on two PCs) and by NFE Tool. Since that time she is practically dead. I wanted to check with the first box, reinstalling Arctic Fox, but this too has turned off and is no longer detected by the PC (I followed the procedure suggested in Products Manual p.7.3). In short, now I find myself two boxes that make paperweights and I don't understand why. Do you think there may have been a hardware problem?
    I don't know what else to do.
     
  2. maelstrom2001

    maelstrom2001 Developer
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    Hello!
    Build 200619 is nightly Nuvoton, not STM32. The latest STM32 build is 200417.
    Please recall what changed since you've flashed first STM32 V80.
    Also, try to press and hold "-" (by default, it is "+", but... anything can happen) button when trying to connect box in Safe Mode.
    And as always, using USB 2.0 ports on the back side of PC (directly from motherboard) is strongly recommended.
     
  3. artisonore

    artisonore New Member

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    First of all, thank you for the quick reply and for your attention.
    When I flashed the first it was fine, perfectly, but when I tried again she died. I tried to press and release "+" and "-", also in combination with the fire key, but nothing to do. I'm really afraid they're gone. Perhaps something has been deleted in the processor (perhaps the bootloader). Can you tell me what cards the V80 is equipped with?
    I would like to ask you "HID \ VID_0483 & PID_5750 \ 6 & 2a00aa84 & 0 & 0000" is based on STM32 chip? Or did I get it wrong?
     
  4. maelstrom2001

    maelstrom2001 Developer
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    Yep, it's STM32.
    V80 have two versions:
    • VID = 0x0483 PID = 0x5750 - STM32F072CBT6
    • VID = 0x0416 PID = 0x5020 - Nuvoton M452LE6AE
    It's pretty strange. Really, it seems that the bootloader is destroyed, but why... Anyway, it is possible to restore STM32 bootloader with disassembling the box and some manipulations, if you are familiar a bit with electronics.
     
    #4 maelstrom2001, May 6, 2021
    Last edited: May 6, 2021
  5. artisonore

    artisonore New Member

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    Thanks @maelstrom2001 . Yes, I will try to disassemble the boxes (unfortunately 2 and I'm sorry to throw them). Could you give me some indication? Thanks again
     
  6. maelstrom2001

    maelstrom2001 Developer
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    When you disassembly the box, please take a detailed photo in good resolution of the PCB from microcontroller side. We have to find the resistor connected to pin 44 of the MCU and VDD net. And then everything will be relatively simple :) of course, if the MCU is alive.
     
  7. artisonore

    artisonore New Member

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    Ok, he will do it as soon as possible and I'll update you. Thanks again
     
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  8. artisonore

    artisonore New Member

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    IMG_20210601_124001.jpg IMG_20210601_124154.jpg Hi @maelstrom2001, it was very complicated to disassemble the board, the box is boxed and I didn't want to unsolder anything. Anyway this is the best I could do. If we can, well, otherwise it doesn't matter, for what it costs. it's more a question of stubbornness.
     
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  9. maelstrom2001

    maelstrom2001 Developer
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    Hello @artisonore !
    Thank you, but MCU is covered by display. You don't need to desolder display. If display is sitting on holder, remove holder from PCB. If no, also display may be fixed to MCU with double sided tape. Try to free the display carefully and lift it up to see MCU under it.
     
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  10. artisonore

    artisonore New Member

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    Is that okay? Now, however, it will be pains to reassemble the display. It literally jumped. IMG_20210601_180240.jpg
     
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  11. maelstrom2001

    maelstrom2001 Developer
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    Perfect!
    Please confirm is there traces on PCB which drawn by red lines?
    [​IMG]
    I. e. left pad of C43 is connected to pin 48 and left pad of R21 is connected to pin 44.
    If so, we can move on :)
     
  12. artisonore

    artisonore New Member

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    All right. It seems that left pad of C43 is connected to pin 48 and left pad of R21 is connected to pin 44
     
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  13. maelstrom2001

    maelstrom2001 Developer
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    Great :) please download and install DfuSe Demo: https://mega.nz/#!zGIWyAab!NSxsCNPlFSWwu5OZgZSDpeQDYpH0bAq4ulPQss0Gf5c
    Shorten these pads and connect the box to PC:
    [​IMG]
    PC should detect STM device in DFU mode, now pads can be released. Also, start DfuSe Demo and see if it detected the box too.
    If so, I'll make bootloader for flashing with DfuSe Demo.
     
    #13 maelstrom2001, Jun 1, 2021
    Last edited: Jun 1, 2021
  14. artisonore

    artisonore New Member

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    should i create a jumper (for example with a screwdriver) between C43 and R21?
     
  15. maelstrom2001

    maelstrom2001 Developer
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    Exactly. Pin 48 is VDD (3.3 volts), pin 44 is BOOT0. Normally pin 44 is tied to common ground with R21. We have to put high logic level on pin 44 to force MCU in DFU mode for bootloader flashing.
     
  16. artisonore

    artisonore New Member

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    Sorry, but it is not being detected by the PC. I've tried and tried, but nothing. Maybe the MCU went
     
  17. maelstrom2001

    maelstrom2001 Developer
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    Bad luck, sorry :(
     
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  18. artisonore

    artisonore New Member

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    Thank you so much for the support. However, I have 4 of those boxes that I find very comfortable. Two are dead (as soon as I have time I'll try to disassemble the second one) and two are in perfect working order.
     
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