Keyoscacquire

----------------------------
Big makeover with many non-compatible changes (sorry).

When writing the base of this package back in 2019, I had very limited Python
development experience, and some not so clever choices were made. It was time
to make clear these up and make the API easier to use.

That means that there are quite a few non-compatible changes to previous versions,
all of which are detailed below. I am not planning further extensive revisions
like this.

- More attributes are used to make the information accessible not only through
returns

* Captured data stored to ``Oscilloscope._time`` and ``Oscilloscope._values``
* The filename finally used when saving (which might not be the same as the
the argument passed as a filename check happens to avoid overwrite) is
stored in ``Oscilloscope.fname``
* ``Oscilloscope._raw`` and ``Oscilloscope._metadata`` with unprocessed data

- More active use of attributes that are carried forward rather than always
setting the arguments of methods in the ``Oscilloscope`` class. This
affects some functions as their arguments have changed (see below), but
for most functions the arguments stay the same as before. The arguments
can now be used to change attributes of the ``Oscilloscope`` instance.

- ``Oscilloscope.__init__`` and other functions will no longer use default
settings in ``keyoscacquire.config`` that changes the settings of the
*Oscilloscope*, like active channels and acquisition type, but only set
default connection and transfer settings

- Changed the name of the module ``oscacq`` to ``oscilloscope`` and moved
functions not within the ``Oscilloscope`` class to other modules, see
details below

- Bugfixes and docfixes for the number of points to be transferred from the
instrument (previously ``num_points`` argument, now a property). Zero will
set the to the maximum number of points available, and the number of
points can be queried.

- Moved save and plot functions to ``keyoscacquire.fileio``, but are imported
in the ``oscilloscope`` (prev ``oscacq``) module to keep compatibility

- New ``keyoscacquire.fileio.load_trace()`` function for loading saved a trace
from disk to pandas dataframe or numpy array

- ``Oscilloscope.query()`` will now try to read the error from the
instrument if pyvisa fails

- Importing ``keyoscacquire.programmes`` in module ``init.py`` to make it
accessible after importing the module

- Changes in ``list_visa_devices`` and cli programme: now displaying different
errors more clearly; cli programme now has ``-n`` flag that can be set to not
ask for instrument IDNs; and the cli programme will display the instrument's
serial rather than Keysight model series.

- Indicating functions for internal use only and read only attributes with
prefix ``_``, see name changes below

- Documentation updates, including moving from read-the-docs theme to Furo theme

- PEP8 improvements

- *New methods*:

* ``Oscilloscope.get_error()``
* ``Oscilloscope.set_waveform_export_options()``
* ``Oscilloscope.save_trace()`` (``Oscilloscope.savepng`` and
``Oscilloscope.showplot`` can be set to control its behaviour)
* ``Oscilloscope.plot_trace()``

- *New properties*: New properties getters querying the instrument for the
current state and setters to change the state

* ``Oscilloscope.active_channels``
* ``Oscilloscope.acq_type``
* ``Oscilloscope.num_averages``
* ``Oscilloscope.p_mode``
* ``Oscilloscope.num_points``
* ``Oscilloscope.wav_format``
* ``Oscilloscope.timeout`` (this affects the pyvisa resource, not the scope
itself)

- *No compatibility*: Name changes

* module ``oscacq`` to ``oscilloscope``
* ``Oscilloscope.determine_channels()`` -> ``Oscilloscope.set_channels_for_capture()``
* ``Oscilloscope.acquire_print`` -> ``Oscilloscope.verbose_acquistion``
* ``Oscilloscope.set_acquire_print()`` set ``Oscilloscope.verbose_acquistion``
attribute instead
* ``Oscilloscope.capture_and_read_ascii()`` -> ``Oscilloscope._read_ascii()``
(also major changes in the function)
* ``Oscilloscope.capture_and_read_binary()`` -> ``Oscilloscope._read_binary()``
(also major changes in the function)
* ``Oscilloscope.inst`` -> ``Oscilloscope._inst``
* ``Oscilloscope.id`` -> ``Oscilloscope._id``
* ``Oscilloscope.address`` -> ``Oscilloscope._address``
* ``Oscilloscope.model`` -> ``Oscilloscope._model``
* ``Oscilloscope.model_series`` -> ``Oscilloscope._model_series``
* ``oscacq._screen_colors`` -> ``fileio._SCREEN_COLORS``

- *No compatibility*: Moved functions and attributes

* ``check_file()`` from ``oscacq`` to ``fileio``
* ``interpret_visa_id()`` from ``oscacq`` to ``visa_utils``
* ``process_data()`` (as well as ``_process_data_ascii`` and
``_process_data_binary``) from ``oscacq`` to ``dataprocessing``
* ``_SCREEN_COLORS`` (prev. ``_screen_colors``) from ``oscacq`` to ``fileio``

- *No compatibility*: Some functions no longer take ``sources`` and
``sourcesstring`` as arguments, rather ``Oscilloscope._sources`` must be set by
``Oscilloscope.set_channels_for_capture()`` and ``sourcesstring`` is not in
use anymore

* ``Oscilloscope.capture_and_read()``, and its associated
``Oscilloscope._read_ascii()`` and ``Oscilloscope._read_binary()``
* ``Oscilloscope.get_trace()``

- *No compatibility*: Misc

* ``Oscilloscope.get_trace()`` now also returns ``Oscilloscope.num_channels``
* ``Oscilloscope.get_active_channels()`` is now a property ``active_channels``
and returns a list of ints, not chars
* ``keyoscacquire.config`` does not have the ``_acq_type``, ``_num_avg``,
and ``_ch_nums`` static variables anymore as these will not be used
* ``keyoscacquire.config`` has two new static variables, ``_num_points``
and ``_p_mode``

- Context manager compatibility (``__enter__`` and ``__exit__`` functions implemented)
- Adding the function ``get_active_channels`` to query the scope of its active channels
- Adding ``verbose`` attribute

- Some adaptation for using Infiniium oscilloscopes with limited functionality
- Expanding the contents of the ``list_visa_devices`` table
- Bugfix for ascii data processing (originating in v3.0.0)

------------------------
Comprehensive documentation now available on read the docs, added more command
line programme options, some function name changes without compatibility, and bug fixes.

- Expanded command line programmes to take many more options:

- *Connection settings*: visa_address, timeout
- *Acquiring settings*: channels, acq_type
- *Transfer and storage settings*: wav_format, num_points, filename, file_delimiter

- Added ``Oscilloscope.generate_file_header()`` to generate file header with structure::

<id>
<mode>,<averages>
<timestamp>
time,<chs>

Now used by ``save_trace()``

- *No compatibility*: Camel case in function names is no more

* ``getTrace`` -> ``get_trace``
* ``saveTrace`` -> ``save_trace``
* ``plotTrace`` -> ``plot_trace``
* and others

- *No compatibility*: ``Oscilloscope.build_sourcesstring()`` ->
``Oscilloscope.determine_channels()`` and changed return sequence

- *No compatibility*: module ``installed_commandline_funcs`` -> ``installed_cli_programmes``

- *No compatibility*: functions ending with ``_command_line()`` -> ``_cli()``

- Fixed issue when setting number of points to transfer

- Fixed issue (hopefully) with sometimes getting wrong traces exported. Have
now set communication to signed ints, and setting least significant bit first

- Fixed issue where ``ASCii`` wave format would set zero time to the beginning of the trace

- Wrote comprehensive documentation on read the docs