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Re: [Libusb-win32-devel] application works with older libusb-win32 but not with version 0.1.12.1
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From: Stephan M. <Ste...@ia...> - 2007-11-09 12:03:06
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dev->config[0].bConfigurationValue should be >=1.
Could you please post your configuration descriptor(s)?
Stephan
>
> Hi,
>
> > is '1' a valid configuration value?
> well, it should be as the application can be run with the older version
of
> libusb...
> I tried using your code and now the application runs over the
> usb_set_configuration. But now the next call (the one to
> usb_claim_interface()) returns an error...
> Here is the message:
> "usb_claim_interface: could not claim interface 0, invalid configuration
0".
>
> So as I understand configuration 0 is set by the set_configuration and
is
> not valid. But why?? I mean it does work (with the older version of the
> library)!
>
> Thanks in advance
>
>
> Stephan Meyer-2 wrote:
> >
> >> err = usb_set_configuration(m_dev, 1);
> >
> > * is '1' a valid configuration value?
> > This value must by the config-descriptors 'bConfigurationValue'
> > * try usb_set_configuration(m_dev, dev->config[0].bConfigurationValue)
> >
> > Stephan
> >
> >
> >>
> >> Hi,
> >>
> >> the error message is
> >> "usb_set_configuration: could not set config 1: win error: The
parameter
> > is
> >> incorrect.".
> >>
> >> Michael
> >>
> >>
> >> Stephan Meyer-2 wrote:
> >> >
> >> > What's the error message returned
> >> > by usb_strerror()?
> >> >
> >> > Stephan
> >> >
> >> >
> >> >>
> >> >> Hi,
> >> >>
> >> >> I have a VisualC++ 6.0-application (MFC) for Windows XP.
> >> >> This application is supposed to communicate with a microcontroller
> > using
> >> >> Bulk writes over USB.
> >> >> With an older version of libusb (can't tell you the version, but
it's
> >
> >> > from
> >> >> 05 August 2006) the application works fine. Now I downloaded the
> > newest
> >> >> version of libusb (not the filter-driver!) and created a new
> > inf-file.
> >> >> After installing the new driver the application does not work any
> > more!
> >> >> The relevant code is:
> >> >> ---------------------------------------------------
> >> >> usb_init();
> >> >> usb_find_busses();
> >> >> usb_find_devices();
> >> >> for (m_bus = usb_get_busses(); m_bus; m_bus = m_bus->next)
> >> >> {
> >> >> struct usb_device *dev;
> >> >> for (dev = m_bus->devices; dev; dev = dev->next)
> >> >> {
> >> >> if (dev->descriptor.bDeviceClass == 0xff) //find for
vendor
> >> >> specific class
> >> >> {
> >> >> m_dev = usb_open(dev);
> >> >> if (m_dev)
> >> >> {
> >> >> if ((dev->descriptor.idVendor == USB_VENDOR) &&
> >> >> (dev->descriptor.idProduct == USB_PRODUCT))
> >> >> {
> >> >> int err;
> >> >> err = usb_set_configuration(m_dev, 1);
> >> >> if (err)
> >> >> {
> >> >> char* s= usb_strerror();
> >> >> m_strInitStatus = s;
> >> >> UpdateData(FALSE);
> >> >> return;
> >> >> }
> >> >> err = usb_claim_interface(m_dev, 0);
> >> >> if (err)
> >> >> {
> >> >> char* s= usb_strerror();
> >> >> m_strInitStatus = s;
> >> >> UpdateData(FALSE);
> >> >> return;
> >> >> }
> >> >> }
> >> >> }
> >> >> }
> >> >> }
> >> >> }
> >> >>
> >> >
> >>
> >
>
------------------------------------------------------------------------------------
> >> >>
> >> >> With the new version of libusb the usb_set_configuration(...) call
> >> > returns
> >> >> with an error and tells me, that configuration 1 could not be set
> >> > because
> >> >> the parameter is invalid...
> >> >> If I use the new libusb0.dll, the new libusb.lib and the OLD
> > libusb0.sys
> >> > the
> >> >> application works fine again.
> >> >>
> >> >> Can someone please tell me where I am going wrong?
> >> >> Thank you in advantage for your help
> >> >> --
> >> >> View this message in context: http://www.nabble.com/application-
> >> >> works-with-older-libusb-win32-but-not-with-version-0.1.12.1-
> >> >> tf4770195.html#a13644735
> >> >> Sent from the LibUSB Dev - Win32 mailing list archive at
Nabble.com.
> >> >>
> >> >>
> >> >>
> >> >
> >
-------------------------------------------------------------------------
> >> >> This SF.net email is sponsored by: Splunk Inc.
> >> >> Still grepping through log files to find problems? Stop.
> >> >> Now Search log events and configuration files using AJAX and a
> > browser.
> >> >> Download your FREE copy of Splunk now >> http://get.splunk.com/
> >> >> _______________________________________________
> >> >> Libusb-win32-devel mailing list
> >> >> Lib...@li...
> >> >> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
> >> >
> >> >
> >> >
> >
-------------------------------------------------------------------------
> >> > This SF.net email is sponsored by: Splunk Inc.
> >> > Still grepping through log files to find problems? Stop.
> >> > Now Search log events and configuration files using AJAX and a
> > browser.
> >> > Download your FREE copy of Splunk now >> http://get.splunk.com/
> >> > _______________________________________________
> >> > Libusb-win32-devel mailing list
> >> > Lib...@li...
> >> > https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
> >> >
> >> >
> >>
> >> --
> >> View this message in context: http://www.nabble.com/application-
> >> works-with-older-libusb-win32-but-not-with-version-0.1.12.1-
> >> tf4770195.html#a13664629
> >> Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com.
> >>
> >>
> >>
> >
-------------------------------------------------------------------------
> >> This SF.net email is sponsored by: Splunk Inc.
> >> Still grepping through log files to find problems? Stop.
> >> Now Search log events and configuration files using AJAX and a
browser.
> >> Download your FREE copy of Splunk now >> http://get.splunk.com/
> >> _______________________________________________
> >> Libusb-win32-devel mailing list
> >> Lib...@li...
> >> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
> >
> >
> >
-------------------------------------------------------------------------
> > This SF.net email is sponsored by: Splunk Inc.
> > Still grepping through log files to find problems? Stop.
> > Now Search log events and configuration files using AJAX and a
browser.
> > Download your FREE copy of Splunk now >> http://get.splunk.com/
> > _______________________________________________
> > Libusb-win32-devel mailing list
> > Lib...@li...
> > https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
> >
> >
>
> --
> View this message in context: http://www.nabble.com/application-
> works-with-older-libusb-win32-but-not-with-version-0.1.12.1-
> tf4770195.html#a13665547
> Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com.
>
>
>
-------------------------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc.
> Still grepping through log files to find problems? Stop.
> Now Search log events and configuration files using AJAX and a browser.
> Download your FREE copy of Splunk now >> http://get.splunk.com/
> _______________________________________________
> Libusb-win32-devel mailing list
> Lib...@li...
> https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel
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