Scientific Linux 6.3でGPIB: ナノボルトメータと通信

まずは/etc/gpib.confを編集し，アドレスが22，型番34420Aを登録します．
一応USBからGPIBインターフェースをぬいて，再起動．

起動後に，もう一度USBにGPIBアダプタをさす．
dmesgとLEDを確認．

さてさて，インタープリタで扱う方がテストとしてはやりやすいので，pythonから使えるかな？という甘い考えを抱き，Pythonでテスト．
しかし．．．．


>>> import Gpib
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named Gpib
>>>

．．．そんなモジュールないとか言い出す．
きっとパスが通ってないに違いない，と思い，


>>> import sys
>>> sys.path
['', '/usr/lib/python26.zip', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', '/usr/lib/python2.6/site-packages', '/usr/lib/python2.6/site-packages/gst-0.10', '/usr/lib/python2.6/site-packages/gtk-2.0', '/usr/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg-info', '/usr/lib/python2.6/site-packages/webkit-1.0']
>>>

やっぱり．

linux-gpib関係はすべて/usr/local/libの下にいます．

そこで，環境変数PYTHONPATHを設定してみた．

$ export PYTHONPATH=/usr/local/lib:/usr/local/lib/python2.6/:/usr/local/lib/python2.6/site-packages/

再びPythonを起動してチェック．

$ python

Python 2.6.6 (r266:84292, Jun 18 2012, 09:59:14) 

[GCC 4.4.6 20110731 (Red Hat 4.4.6-3)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import sys

>>> sys.path

['', '/usr/local/lib', '/usr/local/lib/python2.6', '/usr/local/lib/python2.6/site-packages', '/usr/lib/python26.zip', '/usr/lib/python2.6', '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', '/usr/lib/python2.6/site-packages', '/usr/lib/python2.6/site-packages/gst-0.10', '/usr/lib/python2.6/site-packages/gtk-2.0', '/usr/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg-info', '/usr/lib/python2.6/site-packages/webkit-1.0']

理屈の上ではこれで大丈夫なはず．

もう一度リベンジ！

>>> import Gpib

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "/usr/local/lib/python2.6/site-packages/Gpib.py", line 2, in <module>

    import gpib

ImportError: libgpib.so.0: cannot open shared object file: No such file or directory

>>> 

しんどいなぁ．．．．．

今日は帰ろう．