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Error - Could not open NCS device. mvncStatus value: -7

Hi, Movidius engineer

These days I've test Movidius NCS on my raspberry pi.
My test demo is ncsdk/examples/apps/hello_ncs_cpp
I've checked
$ ls /usr/local/lib/mvnc/
MvNCAPI.mvcmd libmvnc.so.0
But I still got the wrong mvncStatus value.
Could you give me some suggestions?

Thanks

Comments

  • 3 Comments sorted by Votes Date Added
  • @AaronYue It seems like maybe the installation may have not completed successfully. Can you try re-cloning and reinstalling the NCSDK again?

  • Yes, I've tried it again but still failed.
    I compiled ncsdk/examples/apps/hello_ncs_cpp and then executed it.

    Then I inserted the NCS to raspberry pi.
    Here are the logs I got.

    $ ./ncs_test
    Error - Could not open NCS device.
    mvncStatus value: -7

    I've checked again:
    $ ls /usr/local/lib/mvnc/
    MvNCAPI.mvcmd libmvnc.so.0

    How to fix it?

    Thanks

  • @AaronYue Let's see if your RPi is detecting the NCS device. Can you try the following commands and post your log here?

    1. Unplug your NCS device.
    2. sudo dmesg -C
    3. Plug your NCS device back into your RPi.
    4. dmesg >> dmesg_log.txt
    5. Paste the contents of the dmesg_log.txt log here.
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