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> > > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and > stay > ahead of the curve. Join us from November 9-12, 2009. Register > now! > http://p.sf.net/sfu/devconf > _______________________________________________ > javax-usb-devel mailing list > javax-usb-devel@lists.sourceforge.net > <mailto:javax-usb-devel@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/javax-usb-devel > > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > > > ------------------------------------------------------------------------ > > _______________________________________________ > javax-usb-devel mailing list > javax-usb-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/javax-usb-devel -- 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 ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ javax-usb-devel mailing list javax-usb-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
