• State Verified Answer
  • Replies 5 replies
  • Subscribers 67 subscribers
  • Views 551 views
  • Users 0 members are here
Attachments (0)
Nordic Case Info
  • Case ID: 318883
Options

Device stopped working (Error: Device not detected)

Jithin A

Hi,

I have 2 nrf52840-preview dk board. All of a sudden both the devices are not working any more.

I have referred to some suggestions and tried all the below cases and still no use.

  1. Hold IF BOOT/RESET and unplug/plug, the device should be detected as BOOTLOADER, in my case it is still showing "USB Device not recognized".
  2. I have checked the Voltage and I see 2.9v at VDD.
  3. Try to reset from J-LINK commander, not able connect to the board.

I also observe below issue.

  1. Power on the device, LED5 blink rapidly.
  2. Hold IF BOOT/RESET, unplug and plug, the LED5 blink slowly (may at interval of ~1 sec).

Please help me to retrieve the device to normal.

Thank you in advance.

Parents
  • 0

    Hello,

    I have 2 nrf52840-preview dk board.

    If you have old PDK's of the nRF52840 (prior to v1.0.0) these are no longer supported. The problem you refer to typically indicate problem with the USB connections (e.g. using a USB cable meant for charging).

    Kenneth

  • 0 in reply to Kenneth
    Kenneth said:
    If you have old PDK's of the nRF52840 (prior to v1.0.0) these are no longer supported.

    --> I have one with v0.9.1(preview DK) and the other v1.1.0 (nRF52840DK, not preview). So, does this means the one with v0.9.1 does not work anymore?

     

    Kenneth said:
    The problem you refer to typically indicate problem with the USB connections (e.g. using a USB cable meant for charging).

    --> I tried changing USB cable (3-4) and the same result.

    The major improvement is with v1.1.0 is below:

    • I was able to connect with the PC and reset, I get BOOTLOADER connected and after I upload the J-Link bin I get J-Link connected.
    • The issue is I see J-Link in NRF-Connect App and not the board info(nRF52840DK).

    Can you please help me with this as we are working on some project and they are using the 52840 variants, so these boards are really need for us. It would be great if 1 works for us.

    Thank you, appreciate your support.

  • +1 in reply to Jithin A

    You can try to download nrf Command line tools and see if you are able to call 'nrfjprog --recover' from a command line:
    https://www.nordicsemi.com/Products/Development-tools/nrf-command-line-tools/download 

    Are you sure there have been no modifications to the nRF52840-DK (e.g that you possible have cut any solder bridges or similar).

    Don't use the PDK no, it's not supported. Even if you were to make it seemingly work, it should not be used.

    Kenneth

Reply Children
Related