i can't find a libusb-java package on my package manager.
i followed the instructions here: http://libusb-java.ch/installation/start
i run the jar file and get the folowing error: java.lang.UnsatisfiedLinkError: no usbJava in java.library.path
so i renamed libLibusbJava-1_1.so to libusbJava.so and copied it into the working directory
i run the jar file and get the following error: java.lang.UnsatisfiedLinkError: ch.ntb.usb.LibusbJava.usb_error_no(I)I
i think this means it can't find the libusb jar file.
i have tried moving the jar file into working directory, altering name case.
java -verbose doesn't mention anything about loading the libusb jar file.
so i don't really know what i'm doing and would appreciate any help thank you.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I realised i have been silly, rather than the 1.1 so and jar the project was built with ch.ntb.usb-0.5.9.jar so i need to use an older .so that uses old libusb.
I didn't understand that the ch.ntb.usb-0.5.9.jar was the old version of libusbjava.
I tried building an older version from svn but java segfaults on one of the get string methods.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
almost kind of...
i did
1) install libusb, libusbx from package manager. libusb is a wrapper for libusbx i think so need them bothe
2) svn checkout then jump to revision 280, this afaik is the latest version that has the functions for 0.5.9 I THINK
3) inside both libusbjava.cpp and libusbjava.h do a find/replace for inf_libubsjava_ -> usb_, this is where 0.5.9 expects to find the functions in the namespace or whatever its actually called.
4) edit project.properties, i pointed /usr/lib to /usr/lib64 because thats where my libusb.so were and also under linux specific i put in my paths for openjdk, (uncomment and modify includes2 and uncomment includes3), do "find / -iname "jni.h"" to get the path for includes2
5) build with "ant -v linux", see if there are any complaints. i get plenty of warings but no errors, if files are missing check your paths in project.properties.
6) copy .so to somewhere your 0.5.9 jar can find it.
the reason i got a segfault earlier was apparently i don't have the correct permissions to query usb devices, running as root doesn't crash but now i have
LibusbJava.usb_set_configuration: Numerical result out of range
I'm too annoyed about the permissions thing to look into it right now but i'm sure theres something in the svn log about accepting numbers >0 vs >=0 but i can't remeber what it was for exactly.
good luck nzasch keep me updated how you go.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
ok i'm trying to follow these instructions https://github.com/tinwhisker/Owon-VDS1022 on fedora.
I dont know anything at all about java whatsoever.
i can't find a libusb-java package on my package manager.
i followed the instructions here: http://libusb-java.ch/installation/start
i run the jar file and get the folowing error: java.lang.UnsatisfiedLinkError: no usbJava in java.library.path
so i renamed libLibusbJava-1_1.so to libusbJava.so and copied it into the working directory
i run the jar file and get the following error: java.lang.UnsatisfiedLinkError: ch.ntb.usb.LibusbJava.usb_error_no(I)I
i think this means it can't find the libusb jar file.
i have tried moving the jar file into working directory, altering name case.
java -verbose doesn't mention anything about loading the libusb jar file.
so i don't really know what i'm doing and would appreciate any help thank you.
I realised i have been silly, rather than the 1.1 so and jar the project was built with ch.ntb.usb-0.5.9.jar so i need to use an older .so that uses old libusb.
I didn't understand that the ch.ntb.usb-0.5.9.jar was the old version of libusbjava.
I tried building an older version from svn but java segfaults on one of the get string methods.
Hi
Have you found a way to get ch.ntb.usb-0.5.9.jar running in linux?
almost kind of...
i did
1) install libusb, libusbx from package manager. libusb is a wrapper for libusbx i think so need them bothe
2) svn checkout then jump to revision 280, this afaik is the latest version that has the functions for 0.5.9 I THINK
3) inside both libusbjava.cpp and libusbjava.h do a find/replace for inf_libubsjava_ -> usb_, this is where 0.5.9 expects to find the functions in the namespace or whatever its actually called.
4) edit project.properties, i pointed /usr/lib to /usr/lib64 because thats where my libusb.so were and also under linux specific i put in my paths for openjdk, (uncomment and modify includes2 and uncomment includes3), do "find / -iname "jni.h"" to get the path for includes2
5) build with "ant -v linux", see if there are any complaints. i get plenty of warings but no errors, if files are missing check your paths in project.properties.
6) copy .so to somewhere your 0.5.9 jar can find it.
the reason i got a segfault earlier was apparently i don't have the correct permissions to query usb devices, running as root doesn't crash but now i have
LibusbJava.usb_set_configuration: Numerical result out of range
I'm too annoyed about the permissions thing to look into it right now but i'm sure theres something in the svn log about accepting numbers >0 vs >=0 but i can't remeber what it was for exactly.
good luck nzasch keep me updated how you go.