:Authors:
Pearu Peterson
:Website:
http://pylibnidaqmx.googlecode.com/
:License:
New BSD License
The latest release can be downloaded from pylibnidaqmx website.
The latest development code is available via SVN. To check it out, run::
svn checkout http://pylibnidaqmx.googlecode.com/svn/trunk/ pylibnidaqmx-svn cd pylibnidaqmx-svn
To use pylibnidaqmx, the following is required:
To install pylibnidaqmx, unpack the archive file, change to the
pylibnidaqmx source directory PyLibNIDAQmx-?.?* (that contains
setup.py file and nidaqmx package), and run::
python setup.py install
The nidaqmx Python package provides the following classes: AnalogInputTask, AnalogOutputTask, DigitalInputTask, DigitalOutputTask, CounterInputTask, CounterOutputTask that can be used to create NI-DAQ tasks and they have methods to create channels, setting timing and triggering properties and reading and writing data.
Here follows an example how to generate voltage:
from nidaqmx import AnalogOutputTask import numpy as np data = 9.95np.sin(np.arange(1000, dtype=np.float64)2*np.pi/1000) task = AnalogOutputTask() task.create_voltage_channel('Dev1/ao2', min_val=-10.0, max_val=10.0) task.configure_timing_sample_clock(rate = 1000.0) task.write(data) task.start() raw_input('Generating voltage continuously. Press Enter to interrupt..') task.stop() del task
and example how to measure and plot the voltage:
from nidaqmx import AnalogInputTask import numpy as np task = AnalogInputTask() task.create_voltage_channel('Dev1/ai16', terminal = 'rse', min_val=-10.0, max_val=10.0) task.configure_timing_sample_clock(rate = 1000.0) task.start() data = task.read(2000, fill_mode='group_by_channel') del task from pylab import plot, show plot (data) show ()
If Dev1/ao2 and Dev1/ai16 are directly connected then you should see two sine waves plotted to screen.
Additional documentation is available online in PyLibNIDAQmx website.
You can report bugs at the pylibnidaqmx issue tracker:
http://code.google.com/p/pylibnidaqmx/issues/list
Any comments and questions can be sent also to the authors.