adi-reader 0.0.7

Reading LabChart recorded data

adinstruments_sdk_python

Use this code to read .adicht (Labchart) files into Python. Interfacing with the ADIstruments DLL is done via cffi.

• The code utilizes the SDK from ADIstruments to read files in Python as NumPy arrays.
• Currently only works for Windows.
• A slightly more flushed out Matlab version can be found here.

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Installation

pip install adi-reader

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Test code

    import adi
    f = adi.read_file(r'C:\Users\RNEL\Desktop\test\test_file.adicht')
    # All id numbering is 1 based, first channel, first block
    # When indexing in Python we need to shift by 1 for 0 based indexing
    # Functions however respect the 1 based notation ...

    # These may vary for your file ...
    channel_id = 2
    record_id = 1
    data = f.channels[channel_id-1].get_data(record_id)
    import matplotlib.pyplot as plt
    plt.plot(data)
    plt.show()

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Dependencies

• cffi
• NumPy
• Python 3.6-3.9

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Setup for other Python versions

• Running the code might require compiling the cffi code depending on your Python version.
• This requires running cffi_build.py in the adi package.
• This might require installing cffi as well as some version of Visual Studio.
• The currently released code was compiled for Python 3.6-3.9 on Visual Studio 14.0 or greater was required.

For upgrading to 3.8, I installed Python 3.8. Within the interpreter I ran the following:

• Jim note to self, rather than installing Anaconda I simply:
  • download Python from https://www.python.org/downloads/windows/
  • cd to Python directory or run directly, these go to something like: C:\Users\RNEL\AppData\Local\Programs\Python\Python39-32\python
  • Note the above path is specific to my computer, might need to change user name

import subprocess
import sys

#https://stackoverflow.com/questions/12332975/installing-python-module-within-code
def install(package):
    subprocess.call([sys.executable, "-m", "pip", "install", package])

install("cffi")

import os
#This would need to be changed based on where you keep the code
os.chdir('G:/repos/python/adinstruments_sdk_python/adi')

# For 64 bit windows
exec(open("cffi_build.py").read())

# For 32 bit windows
exec(open("cffi_build_win32.py").read())

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Improvements

This was written extremely quickly and is missing some features. Feel free to open pull requests or to open issues.