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idata
Community Manager
364 Views

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

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3 Replies
idata
Community Manager
97 Views

@AaronYue It seems like maybe the installation may have not completed successfully. Can you try re-cloning and reinstalling the NCSDK again?

idata
Community Manager
97 Views

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

idata
Community Manager
97 Views

@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.  

  3. sudo dmesg -C
  4.  

  5. Plug your NCS device back into your RPi.
  6.  

  7. dmesg >> dmesg_log.txt
  8.  

  9. Paste the contents of the dmesg_log.txt log here.
  10.  

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