Re: [libusb] libusb_claim_interface -LIBUSB_ERROR_ACCESS

[Maxime B. <bla...@gm...>]

Thanks for your response!
I don't have Garmin Express running or any other Ant software running.
I Tried it on 2 different computer so far with the same result.

I compiled libUsb with msvc2012 and I'm using the static lib.
I also tried with the dll instead of the static lib.

I'd love to use libUsb instead of the current ANT library I'm using (
http://www.thisisant.com/developer/resources/downloads/)
This one is no longer maintained and has problem with USB1 stick.

Is there a way to help debug and see a more specific cause of receiving  "
LIBUSB_ERROR_ACCESS" when claiming an interface?
I get this in the console log :
libusb: error [winusbx_claim_interface] could not access interface 0: [8]
Not enough storage is available to process this command.

My device is running a good driver of libUsb (libusb0 v.1.2.40.201) that
should be usable?
https://www.dropbox.com/s/29ika674kwyl48m/versionStickLibUsb.png?dl=0



******************************************
*Here is my complete project file :*

QT       += core gui widgets



TARGET = testLibUSB

TEMPLATE = app

CONFIG += c++11




#// Win - Can't claim an interface?

win32 {


    INCLUDEPATH += C:\Dropbox\libusb-1.0.19\libusb


    LIBS += C:\Dropbox\libusb-1.0.19\Win32\Release\lib\getopt.lib

    LIBS += C:\Dropbox\libusb-1.0.19\Win32\Release\lib\libusb-1.0.lib


}

#// Mac - Working 100%

macx {


    #OSX Libs

    LIBS += -framework IOKit

    LIBS += -framework CoreFoundation



    INCLUDEPATH +=  /Users/tourlou2/Dropbox/libusb-1.0.19_mac/libusb/


    LIBS += -lobjc

    LIBS += /Users/tourlou2/Dropbox/libusb-1.0.19_mac/libusb/lib/libusb-1.0.a

}



On Mon, Feb 9, 2015 at 3:54 PM, Tim Roberts <ti...@pr...> wrote:

> Maxime Blais wrote:
> >
> > I'm having problems claiming an interface on Windows, my code works
> > fine on OSX for example.
> >
> > I tried resetting the device, getting and setting back the
> > configuration, but still have the problem.
> > The rest of the libUsb functions seems to work fine, if I could just
> > get access to the interface..
>
> Do you have the Garmin Express Agent running?  Only one application at a
> time can claim that interface.  If the agent is already running, you can
> do control pipe stuff, but you can't claim the interface.  Check in the
> system tray for their icon and quit it.
>
> --
> Tim Roberts, ti...@pr...
> Providenza & Boekelheide, Inc.
>
>
>
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