[Scilab-users] Open comport in C macro

[Piotr Głębski]

I try to develop some hardware which I want to connect to Xcos in Linux
(simply DAQ).
Right now i write macro making a block in Xcos. I can put parameters to my
C library and get date from (loopback). Right now i try to connect to
usb/rs device using this library: http://www.teuniz.net/RS-232/
And get this error:

!Oups. A fatal error has been detected by Scilab.                    !
!                                                                    !
!Your instance will probably crash soon.                             !
!                                                                    !
!Please report a bug on http://bugzilla.scilab.org/                  !
!                                                                    !
!with:                                                               !
!                                                                    !
!* a sample code which reproduces the issue                          !
!                                                                    !
!* the result of [a, b] = getdebuginfo()                             !
!                                                                    !
!* the following information:                                        !
!                                                                    !
![debian:10408] Signal: Segmentation fault (11)                      !
!                                                                    !
![debian:10408] Signal code: Invalid permissions (2)                 !
!                                                                    !
![debian:10408] Failing at address: 0x7f36042c1d10                   !
!                                                                    !
!                                                                    !
!                                                                    !
!Stos wywołań:                                                     !
!                                                                    !
!   1: 0x7107eb < >                              (/opt/scilab-5.4.1/t!
!     hirdparty/java//lib/amd64/server/libjvm.so)                    !
!                                                                    !
!   2: 0x714350 <JVM_handle_linux_signal>        (/opt/scilab-5.4.1/t!
!     hirdparty/java//lib/amd64/server/libjvm.so)                    !
!                                                                    !
!   3: 0x7106fe < >                              (/opt/scilab-5.4.1/t!
!     hirdparty/java//lib/amd64/server/libjvm.so)                    !
!                                                                    !
!   4: 0xf030   < >                              (/lib/x86_64-linux-g!
!     nu/libpthread.so.0)                                            !
!                                                                    !
!   5: 0x190b   <OpenComport>                    (/home/sasza/scilab/!
!     LewitronInC3/src/c/liblewitron.so)                             !
!                                                                    !
!   6: 0x139a   <StartTransmision>               (/home/sasza/scilab/!
!     LewitronInC3/src/c/liblewitron.so)                             !
!                                                                    !
!   7: 0x1235   <lewitron>                       (/home/sasza/scilab/!
!     LewitronInC3/src/c/liblewitron.so)                             !
!                                                                    !
!   8: 0x2852c  <callf>                          (/opt/scilab-5.4.1/l!
!     ib/scilab/libsciscicos.so)                                     !
!                                                                    !
!   9: 0x31919  <scicos_>                        (/opt/scilab-5.4.1/l!
!     ib/scilab/libsciscicos.so)                                     !

Becose i devide program into parts i can use the same source in standalone
application - it's work perfectly.
The problem is probably permission to /dev/ttyUSB. I don't know exactly the
structure of scilab, but i think that the java virtual machine not allowed
to open comport. So the question is: how to workaround it? (for dirty
solution i try to exectue evrything as root, but it has not effect :/ )
Any ideas?
Thanks for any replays
Piotr
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20131126/dbe0c54e/attachment.htm>