Hi Mick,
great success by now !
Am Sonntag, den 14.03.2010, 19:42 +0000 schrieb Mick Sulley:
> Hi Marcus,
>
> OK it seems to install now, now to the next problem!
>
> Following the example code from your web page
>
> >>> from pyowfs import Connection
> >>> root = Connection ("/dev/ttyD1")
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.6/dist-packages/pyowfs/owfs.py", line 281, in
> __init__
> capi = libcapi.CAPI ()
> File "/usr/lib/python2.6/dist-packages/pyowfs/libcapi.py", line 42, in
> __init__
> self.libcapi = ctypes.CDLL ("libowcapi.so")
> File "/usr/lib/python2.6/ctypes/__init__.py", line 353, in __init__
> self._handle = _dlopen(self._name, mode)
> OSError: libowcapi.so: cannot open shared object file: No such file or
> directory
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
as pyowfs is just a wrapper around libowcapi - it needs access to it ...
> >>>
>
> My adapter is connected to /dev/ttyD1, is the format root = Connection
> ("/dev/ttyD1") correct?
yes - if this is what you would give the owcapi lib as initialisation,
it should work - i only tested with a usb adapter ("u") .... but ...
>
> I have looked for libowcapi.so and I have 3 of them
> /opt/owfs/lib/libowcapi.so
i assume this is the installed version ...
> /usr/src/owfs-2.7p21/module/owcapi/src/c/.libs/libowcapi.so
> /usr/src/owfs-2.7p29/module/owcapi/src/c/.libs/libowcapi.so
and these are the compiled versions in your source tree ...
as the installed version is not on a system wide "standard
place" (/usr/lib, /usr/local/lib, ...) i assume you need to set the
environment variable LD_LIBRARY_PATH which defines the places to look
for .so files ...
so, assuming you are using bash, the following should work ...
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/owfs/lib
hope it does ;)
you can check by:
ldconfig -v | less
and searching (type "/" followed by "owfs" - without the quotes) should
discover the library ....
regards,
marcus.
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