Hi,

On 09/22/2013 10:14 AM, Igor Furlan wrote:
> Hi
>
> Recently I've ordered (and received)  two USB based I2C/SPI interfaces
> from NANO River Technology http://nanorivertech.com/viperboard.html.
> This board is very useful for the LAB work during the evaluation and
> debugging of the, so called, 'first silicon'.
>
> Based on the sample code for Linux from NANO River, I've wrote a small
> CLI utility to talk to our DUTs from the terminal prompt.
>
> Everything works fine. Users are happy. There is just one thing they
> do not like. They are getting on their screen the following message:
>
>   [~/I2C]$   i2c 2B AA BB -b 100kbit -U VIPER
> libusbx: warning [libusb_exit] application left some devices open
>
> Yes, I've installed the latest version of the libusbx package. We are
> running it on CentOS 6.4.
>
> Is there a trick (or workaround) to suppress the message ?

Not really a trick or a workaround, you just need to make sure
that your application properly closes any devices it has opened
before exiting.

Regards,

Hans

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