12 Jan
2013
12 Jan
'13
5:03 a.m.
Hello,
I am using cygwin with Windows XP but I do not have a good
understanding of the Windows OS. I could do with some advice about how
the usb driver for the RTL2832U device is meant to be located by the
rtl_sdr.c program using the libusb library.
For me this program fails with a libusb_open() error of -12. Using the
debugger I can see this is due to no driver being found for the
RTL2832U device.
When the function get_api_type() in windows_usb.c is called it
consults the registry for a driver name for the device. In my case it
finds RTL2832UUSB and RTL2832UBDA but I suppose this just depends on
what is sitting in the registry. Subsequently the program checks to
see if the driver name is WINUSB or USBCCGP. Because it is not the
program cannot work.
Am I meant to ensure either WINUSB or USBGCCP drivers are installed on
my computer and must the registry entry for the RTL2832U device point
to one of these? If so, is there a recommended procedure to do that?
Thanks for any advice
Robert Durkacz
17 Jan
17 Jan
5:12 a.m.
I'm using Zadig (http://sourceforge.net/projects/libwdi/files/zadig/)
to replace the driver comes with the device with the WinUSB driver,
which is very easy to use and works fine for me. At the end of my
replacing, it maybe pop a error message box indicates the replacing is
failed, but in fact, after checking the hardware manager, the driver
is installed correctly and works very well.
On Sat, Jan 12, 2013 at 12:03 PM, Robert Durkacz
<robert.durkacz(a)gmail.com> wrote:
Hello,
I am using cygwin with Windows XP but I do not have a good
understanding of the Windows OS. I could do with some advice about how
the usb driver for the RTL2832U device is meant to be located by the
rtl_sdr.c program using the libusb library.
For me this program fails with a libusb_open() error of -12. Using the
debugger I can see this is due to no driver being found for the
RTL2832U device.
When the function get_api_type() in windows_usb.c is called it
consults the registry for a driver name for the device. In my case it
finds RTL2832UUSB and RTL2832UBDA but I suppose this just depends on
what is sitting in the registry. Subsequently the program checks to
see if the driver name is WINUSB or USBCCGP. Because it is not the
program cannot work.
Am I meant to ensure either WINUSB or USBGCCP drivers are installed on
my computer and must the registry entry for the RTL2832U device point
to one of these? If so, is there a recommended procedure to do that?
Thanks for any advice
Robert Durkacz
--
"I may not agree with what you say but I will defend to the death your
right to say it"
7:38 a.m.
It looks like this answers my question. The libusb documentation at
http://www.libusb.org/wiki/windows_backend also points to Zadig as the
way to control what driver is used.
Thanks.
On Thu, Jan 17, 2013 at 3:12 PM, Moses <moses.mason(a)gmail.com> wrote:
I'm using Zadig
(http://sourceforge.net/projects/libwdi/files/zadig/)
to replace the driver comes with the device with the WinUSB driver,
which is very easy to use and works fine for me. At the end of my
replacing, it maybe pop a error message box indicates the replacing is
failed, but in fact, after checking the hardware manager, the driver
is installed correctly and works very well.
On Sat, Jan 12, 2013 at 12:03 PM, Robert Durkacz
<robert.durkacz(a)gmail.com> wrote:
Hello,
I am using cygwin with Windows XP but I do not have a good
understanding of the Windows OS. I could do with some advice about how
the usb driver for the RTL2832U device is meant to be located by the
rtl_sdr.c program using the libusb library.
For me this program fails with a libusb_open() error of -12. Using the
debugger I can see this is due to no driver being found for the
RTL2832U device.
When the function get_api_type() in windows_usb.c is called it
consults the registry for a driver name for the device. In my case it
finds RTL2832UUSB and RTL2832UBDA but I suppose this just depends on
what is sitting in the registry. Subsequently the program checks to
see if the driver name is WINUSB or USBCCGP. Because it is not the
program cannot work.
Am I meant to ensure either WINUSB or USBGCCP drivers are installed on
my computer and must the registry entry for the RTL2832U device point
to one of these? If so, is there a recommended procedure to do that?
Thanks for any advice
Robert Durkacz
--
"I may not agree with what you say but I will defend to the death your
right to say it" 
22 Jan
22 Jan
1:58 p.m.
Hi from libusb land,
Robert Durkacz wrote:
It looks like this answers my question. The libusb
documentation at
http://www.libusb.org/wiki/windows_backend also points to Zadig as
the way to control what driver is used.
It's not the only way by any means, but it's a convenient GUI. If you
want to automate then look at the wdi-simple example in the libwdi
project (zadig also uses libwdi).
//Peter
4120
days inactive
4130
days old
3 comments
3 participants
participants (3)
-
Moses -
Peter Stuge -
Robert Durkacz