https://github.com/pearu/pylibnidaqmx
a Python wrapper to libnidaqmx library
https://github.com/pearu/pylibnidaqmx
Last synced: 6 months ago
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a Python wrapper to libnidaqmx library
- Host: GitHub
- URL: https://github.com/pearu/pylibnidaqmx
- Owner: pearu
- License: other
- Created: 2015-06-05T18:13:27.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2019-07-23T13:58:33.000Z (about 6 years ago)
- Last Synced: 2025-03-28T18:50:33.488Z (7 months ago)
- Language: Python
- Homepage:
- Size: 953 KB
- Stars: 10
- Watchers: 5
- Forks: 9
- Open Issues: 12
-
Metadata Files:
- Readme: README.txt
- License: LICENSE
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README
=====================================================
PyLibNIDAQmx - a Python wrapper to libnidaqmx library
=====================================================
:Authors:
Pearu Peterson
:Download:
https://github.com/pearu/pylibnidaqmx
:Documentation:
https://sysbio.ioc.ee/download/software/pylibnidaqmx/
:License:
New BSD License
History
=======
* Project published on November 5, 2009.
Installation
============
To use pylibnidaqmx, the following is required:
* Python 2.5 or newer
* numpy package
* libnidaqmx library
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
Basic usage
===========
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 = 9.95*np.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, auto_start=False)
>>> 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.
Help and bug reports
====================
You can report bugs at the pylibnidaqmx issue tracker:
https://github.com/pearu/pylibnidaqmx/issues
Any comments and questions can be sent also to the authors.