Re: the permissions, I reviewed the usbfs interface again and I think it
should be possible to get the device info in read-only mode, i.e. so write
access isn't needed. If I get the JNI updated I will let you know.
On Sun, Sep 27, 2009 at 9:46 AM, Andre Juffer <ajuf...@sun3.oulu.fi> wrote:
> Hi Dan,
>
> thanks for the reply. I changed the permissions to ensure rw access to
> the nodes. That is, I have not changed w permissions for /dev or
> /dev/bus as this may result in all kinds of undesirable side effects,
> but but only for usb in /dev/bus:
>
> cd /dev/bus
> chmod -R a+w usb
>
> This affected the outcome of FindUsbDevice without any argument:
>
> Found 4 devices total.
> Found 1 devices with vendor ID 0xffff product ID 0xffff
> Found 3 devices with device class 0x09
> Found 0 devices with manufacturer string "This probably won't match
> anything"
>
> The machine has actually 4 USB ports, so the outcome seems compatible
> with this.
>
> I have attached to one of the USB port a memory stick. The command
> 'lsusb -t' is
>
> Bus# 2
> `-Dev# 1 Vendor 0x1d6b Product 0x0002
> `-Dev# 2 Vendor 0x0781 Product 0x7113
> Bus# 1
> `-Dev# 1 Vendor 0x1d6b Product 0x0001
>
> The memory stick is identified on the third line (Vendor 0x0781 Product
> 0x7113). This is easy to verify with 'lsusb -v'. Running FindUsbDevice
> with idVendor=0x0781 idProduct=0x7113 gives me the following:
>
> Found 4 devices total.
> Found 1 devices with vendor ID 0x0781 product ID 0x7113
> Found 3 devices with device class 0x09
> Found 0 devices with manufacturer string "This probably won't match
> anything"
>
> Running with FindUsbDevice with manufacturer="SanDisk Corp.", I get:
>
> Found 4 devices total.
> Found 1 devices with vendor ID 0xffff product ID 0xffff
> Found 3 devices with device class 0x09
> Found 1 devices with manufacturer string "SanDisk Corp."
>
> So, I conclude that everything seems to work fine also on an AMD64 box.
>
> I am now in the process on trying javax-usb on Windows. I will report on
> this shortly.
>
> Thanks,
> Andre
>
>
> Dan Streetman wrote:
> > The library requires read-write access to the USB nodes, so try either
> > running the program as root or change the permissions on the
> > /dev/bus/usb/NNN/NNN nodes.
> >
> >
> > On Wed, Sep 23, 2009 at 5:31 PM, Andre Juffer <ajuf...@sun3.oulu.fi
> > <mailto:ajuf...@sun3.oulu.fi>> wrote:
> >
> > Hello,
> >
> > I was wondering whether the JavaxUsb library would properly work on
> an
> > AMD64 Linux box (running Lenny Debian). I have successfully compiled
> and
> > installed the library, compiled all java sources from scratch (with
> Java
> > 1.6) and everything seems to work.
> >
> > On the Linux box, 'lsusb -t' gives the following:
> >
> > Bus# 2
> > `-Dev# 1 Vendor 0x1d6b Product 0x0002
> > Bus# 1
> > `-Dev# 1 Vendor 0x1d6b Product 0x0001
> >
> >
> > If I run FindUsbDevice (one of the test classes) with for instance
> > idVendor=0x1d6b, I get:
> >
> > Found 1 devices total.
> > Found 0 devices with vendor ID 0x1d6b product ID 0xffff
> > Found 1 devices with device class 0x09
> > Found 0 devices with manufacturer string "This probably won't match
> > anything"
> >
> > So, it apparently sees a device (I should note that nothing is
> connected
> > to the USB ports).
> >
> > Running FindUsbDevice without any arguments, I get:
> >
> > Found 1 devices total.
> > Found 1 devices with vendor ID 0xffff product ID 0xffff
> > Found 1 devices with device class 0x09
> > Found 0 devices with manufacturer string "This probably won't match
> > anything"
> >
> > The difference really is the second line of the output with and
> without
> > an argument. It apparently sees an device with vendorID 0xffff
> although
> > there is one with ID 0x1d6b.
> >
> > The AMD64 Linux box also has a libusb-0.1.so.4 library. One possibly
> > should use this library instead of libJavaxUsb.so. This library is
> also
> > available for Window (see also http://www.libusb.org/). But its API
> may
> > be completely different.
> >
> > My intention is get this all going also on a Windows box, but for now
> I
> > rely on Linux to get a basic understanding of USB communication.
> >
> > Any suggestion or help is appreciated.
> >
> > Thanks,
> >
> > --
> > Andre H. Juffer | Phone: +358-8-553 1161
> > Biocenter Oulu and | Fax: +358-8-553-1141
> > Department of Biochemistry | Email: andre.juf...@oulu.fi
> > <mailto:andre.juf...@oulu.fi>
> > University of Oulu, Finland | WWW:
> > www.biochem.oulu.fi/Biocomputing/
> > <http://www.biochem.oulu.fi/Biocomputing/>
> > StruBioCat | WWW: www.strubiocat.oulu.fi
> > <http://www.strubiocat.oulu.fi>
> > NordProt | WWW: www.nordprot.org
> > <http://www.nordprot.org>
> > Triacle Biocomputing | WWW: www.triacle-bc.com
> > <http://www.triacle-bc.com>
> >
> >
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>
> --
> Andre H. Juffer | Phone: +358-8-553 1161
> Biocenter Oulu and | Fax: +358-8-553-1141
> Department of Biochemistry | Email: andre.juf...@oulu.fi
> University of Oulu, Finland | WWW: www.biochem.oulu.fi/Biocomputing/
> StruBioCat | WWW: www.strubiocat.oulu.fi
> NordProt | WWW: www.nordprot.org
> Triacle Biocomputing | WWW: www.triacle-bc.com
>
>
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