OPen device failed rc=-7

[idata]

I am using an ARM7 platform and trying to connect to the usb stick.

dmesg shows

[ 16.245656] usb 1-1: new high-speed USB device number 2 using xhci-hcd

cat /sys/kernel/debug/usb/devices shows the the device is identified by the kernel. shows

T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0

D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1P: Vendor=03e7 ProdID=2150 Rev= 0.01S: Manufacturer=Movidius Ltd.S: Product=Movidius MA2X5XS: SerialNumber=03e72150C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mAI:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=11 Prot=ff Driver=(none)E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0msE: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

When running "./ncs_check -1" I get

"OpenDevice 1 failed, rc=-7"

Form the header file "mvnc.h" it looks the boot file was not found.

The boot file is in "MvNCAPI.mvcmd" ( Think this is the one) is placed in /usr/local/lib/mvnc

What might be the reason for the failure ?

Thanks,

Yair

[idata]

After building a 32-bit version of libmvnc on Ubuntu 16.04, I get the exact same error:

/opt/movidius/NCSDK/tests/api-check/ncs-check -1

OpenDevice 4 failed, rc=-7

The error comes from ncs-c-check.c:139

I also have MvNCAPI.mvcmd in /usr/local/lib/mvnc.

Thanks,

Nathaniel

[idata]

@nathanielchen,

Looks like you are trying to run ncs-check manually. The error is thrown by the ncs-check app because mvncOpenDevice filed, which most probably is because of a libusb-1.0-0-dev issue. Please make sure all dependencies are installed on your system. I have listed the platform and python dependencies in https://movidius.github.io/blog/ncs-apps-on-rpi/.

I have been able to port the API on ARMv6, ARMv7 and ARMv8 architectures by following the instructions on https://movidius.github.io/blog/ncs-apps-on-rpi/.