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MCC Universal Library Python API for Windows

Project Description

Info Contains a Python API for interacting with Measurement Computing’s Universal Library. See GitHub for the latest source.
Author Measurement Computing

About

The mcculw package contains an API (Application Programming Interface) for interacting with the I/O Library for Measurement Computing Data Acquisition products, Universal Library. This package was created and is supported by MCC. The package is implemented in Python as a wrapper around the Universal Library C API using the ctypes Python Library.

mcculw is supported for Universal Library 6.55 and later. Some functions in the mcculw package may be unavailable with earlier versions of Universal Library. Visit http://www.mccdaq.com/Software-Downloads.aspx to upgrade your version of UL.

mcculw supports only the Windows operating system.

mcculw supports CPython 2.7 and 3.4+.

Installation

Running mcculw requires InstaCal. Visit http://www.mccdaq.com/Software-Downloads.aspx to download the latest version of InstaCal.

mcculw can be installed with pip:

$ python pip install mcculw

Examples

Download the examples from the mcculw GitHub examples.zip.

Unzip the examples to a known location, such as:

C:\Users\Public\Documents\Measurement Computing\DAQ\Python

Refer to the Universal Library Help for detailed instructions on how to import examples into the Eclipse IDE or Visual Studio.

Usage

The following is a basic example of using the Universal Library to perform analog input. Further examples may be found on GitHub.

from mcculw import ul
from mcculw.enums import ULRange
from mcculw.ul import ULError

board_num = 0
channel = 0
ai_range = ULRange.BIP5VOLTS

try:
    # Get a value from the device
    value = ul.a_in(board_num, channel, ai_range)
    # Convert the raw value to engineering units
    eng_units_value = ul.to_eng_units(board_num, ai_range, value)

    # Display the raw value
    print("Raw Value: " + str(value))
    # Display the engineering value
    print("Engineering Value: " + '{:.3f}'.format(eng_units_value))
except ULError as e:
    # Display the error
    print("A UL error occurred. Code: " + str(e.errorcode)
          + " Message: " + e.message)

Support/Feedback

The mcculw package is supported by MCC. For support for mcculw, contact technical support through mccdaq.com/Support.aspx. Please include version information for Python, Universal Library and the mcculw packages used as well as detailed steps on how to reproduce the problem in your request.

Bugs/Feature Requests

To report a bug or submit a feature request, please use the mcculw GitHub issues page.

Documentation

Documentation is available in the Universal Library Help.

License

mcculw is licensed under an MIT-style license. Other incorporated projects may be licensed under different licenses. All licenses allow for non-commercial and commercial use.

Release history Release notifications

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0.9.7

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0.9.6

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0.9.4

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0.9.3

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0.9.2

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0.9.1

This version
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0.9.0

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