libmorse

Convert timed signals into alphabet.

Installation

For this project, we're gonna use Python 2 version.

Install Python interpreter and pip:

Linux

$ sudo apt update && sudo apt install --upgrade python python-dev python-setuptools
$ sudo -H easy_install -U pip

Windows

• download and install desired version from here: https://www.python.org/downloads/
• download and run get-pip script: https://pip.pypa.io/en/stable/installing/

Make sure that you're using the correct version of pip, by running pip --version. It should use the Python 2 version, if not, try with pip2.

Clone repository and install package:

$ git clone https://github.com/cmin764/libmorse.git
$ cd libmorse
$ sudo -H ./setup.sh    # setup.bat on Windows

Usage

Run CLI and explore the library commands:

Linux

$ libmorse --help

If you have trouble with file permissions (libmorse.log), don't forget to remove them with sudo first. Or simply run git clean -fdx to clean-up the project directory.

Windows

> python bin\libmorse --help

Within CLI:

Windows

Convert alphabet into morse code:

> python bin\libmorse -v send -m "morse code"
-- --- .-. ... . / -.-. --- -.. .

Convert morse code back into alphabet (save output above on disk):

> python bin\libmorse -v send -m -o morse.txt "morse code"
> python bin\libmorse -v receive -m morse.txt
MORSE CODE

Convert alphabet into morse code as pairs of signal/silence quanta:

> python bin\libmorse -v send -o morse.mor "morse code"
> tail morse.mor -n 4
0 300.0
1 300.0
0 900.0
1 300.0

Convert quanta back into alphabet (above output already saved on disk):

> python bin\libmorse -v receive morse.mor
MORSE CODE

Linux

Same commands, just directly execute the libmorse script without the need to supply paths, like in the top Windows examples above.

Within module:

You can also import libmorse as a normal python module/library and use it accordingly in your Python scripts/projects.

Suppose we're having a source of signals and silences of different lengths, like these:

items = [(True, 900.0),
 (False, 300.0),
 (True, 900.0),
 (False, 900.0),
 (True, 900.0),
 (False, 300.0),
 (True, 900.0),
 (False, 300.0),
 (True, 900.0),
 (False, 900.0),
 (True, 300.0),
 (False, 300.0),
 (True, 900.0),
 (False, 300.0),
 (True, 300.0),
 (False, 900.0),
 (True, 300.0),
 (False, 300.0),
 (True, 300.0),
 (False, 300.0),
 (True, 300.0),
 (False, 900.0),
 (True, 300.0),
 (False, 2100.0),
 
 (True, 900.0),
 (False, 300.0),
 (True, 300.0),
 (False, 300.0),
 (True, 900.0),
 (False, 300.0),
 (True, 300.0),
 (False, 900.0),
 (True, 900.0),
 (False, 300.0),
 (True, 900.0),
 (False, 300.0),
 (True, 900.0),
 (False, 900.0),
 (True, 900.0),
 (False, 300.0),
 (True, 300.0),
 (False, 300.0),
 (True, 300.0),
 (False, 900.0),
 (True, 300.0)]

Or a .mor file containing similar entries line by line (True and False normalized to 1 and 0) which can be retrieved by using the libmorse.get_mor_code utility function, then you can automatically analyse and convert them into text by using the libmorse.translate_morse coroutine:

>>> import libmorse

>>> gen = libmorse.translate_morse()
>>> gen.next()
(<libmorse.translator.MorseTranslator at 0x7f324404ff50>, [])
>>> for item in items[:24]:    # items above
        gen.send(item)
    
>>> gen.send((True, 900.0))[1]
[]
>>> gen.send((False, 300.0))[1]
[u'M', u'O', u'R', u'S', u'E', u' ']
>>> gen.send((True, 300.0))[1]
[]
>>> gen.send((False, 300.0))[1]
[]
>>> gen.send((True, 900.0))[1]
[]
>>> gen.send((False, 300.0))[1]
[]
>>> gen.send((True, 300.0))[1]
[]
>>> gen.send((False, 900.0))[1]
[]
>>> gen.send((True, 900.0))[1]
[]
>>> gen.send((False, 300.0))[1]
[u'C']

# And so on, until we get the full text.

We've seen nothing for the first 24 quanta (12 signals and 12 silences) because that's the minimum amount of data we must cluster and analyse in order to correctly interpret each quanta and retrieve the text letter by letter starting from that given threshold.

For more details and examples, check the extensive API documentation described below.

Development

If you want to develop libmorse, do the following:

Optionally install virtualenv:

Linux

$ sudo -H pip install -U virtualenv virtualenvwrapper
$ echo "export WORKON_HOME=~/Envs" >>~/.bashrc
$ source ~/.bashrc
$ mkdir -p $WORKON_HOME
$ echo "source /usr/local/bin/virtualenvwrapper.sh" >>~/.bashrc
$ source ~/.bashrc
$ mkvirtualenv morseus

Windows

Make sure that you have added your Python Scripts path to the system path already (https://www.howtogeek.com/118594/how-to-edit-your-system-path-for-easy-command-line-access/). The path you need to add is usually: C:\Python27\Scripts.

Now install the necessary pip packages and create your first virtual environment.

> pip install -U virtualenv virtualenvwrapper virtualenvwrapper-win
> mkvirtualenv morseus

Use workon morseus command to activate the virtual environment every time you want to work through it and deactivate for leaving it.

Install requirements, develop and test:

Don't forget to uninstall the package first (if installed):

$ pip uninstall libmorse

Then:

$ pip install -Ur requirements/develop.txt
$ python setup.py develop
$ python setup.py test

Don't forget to run with sudo -H if you're working outside the virtualenv.

Run tests, create and serve documentation:

$ nosetests
$ cd docs && make html
$ cd build/html && python -m SimpleHTTPServer

Enter http://localhost:8000 to view documentation.

---

• Homepage: https://cmin764.github.io/morseus/
• Blog: https://cosminpoieana.wordpress.com/category/morseus/
• Documentation: https://libmorse.readthedocs.io/
• Paper (RO): https://goo.gl/H6JfTw
• App: https://github.com/cmin764/morseus
• Source: https://github.com/cmin764/libmorse.git
• License: MIT
• Authors:
  • Cosmin Poieana cmin764@gmail.com