Added Connections page to documentation (#46)

* Added Connections doc page

* Small corrections on comms doc page

Author: MrClock8163

docs/connections.rst

@@ -0,0 +1,136 @@
+.. _page_connections:
+
+Connections
+===========
+
+Total stations and digital levels usually support a serial connection
+with RS232. Some instruments come with additional connection methods, like
+bluetooth as well.
+
+Serial Line
+-----------
+
+The RS232 serial line is the main method of connection. The relevant main
+primitive is the :class:`~geocompy.communication.SerialConnection` class,
+that acts as a wrapper around a :class:`~serial.Serial` object that
+implements the actual low level serial communication.
+
+.. code-block:: python
+    :caption: Simple serial connection
+    :linenos:
+
+    from serial import Serial
+    from geocompy.communication import SerialConnection
+
+
+    port = Serial("COM1", timeout=15)
+    com = SerialConnection(port)
+    com.send("some message")
+    com.close()  # Closes the wrapped serial port
+
+.. caution::
+    :class: warning
+
+    It is strongly recommended to set a ``timeout`` on the connection. Without
+    a ``timeout`` set, the connection may end up in a perpetual waiting state
+    if the instrument becomes unresponsive. A too small value however might
+    result in premature timeout issues when using slow commands (e.g.
+    motorized functions, measurements).
+
+The :class:`~geocompy.communication.SerialConnection` can also be used as a
+context manager, that automatically closes the serial port when the context
+is left.
+
+.. code-block:: python
+    :caption: Serial connection as context manager
+    :linenos:
+
+    from serial import Serial
+    from geocompy.communication import SerialConnection
+
+
+    port = Serial("COM1", timeout=15)
+    with SerialConnection(port) as com:
+        com.send("some message")
+
+To make the connection creation simpler, a utility function is also included
+that can be used similarly to the :func:`open` function of the standard
+library.
+
+.. code-block:: python
+    :caption: Creating connection with the utility function
+    :linenos:
+
+    from geocompy.communication import open_serial
+
+
+    with open_serial("COM1", timeout=15) as com:
+        com.send("some message")
+
+If a time consuming request has to be executed (that might exceed the normal
+connection timeout), it is possible to run it with a temporary override.
+
+.. code-block:: python
+    :caption: Timeout override for slow requests
+    :linenos:
+
+    from geocompy.communication import open_serial
+
+
+    with open_serial("COM1", timeout=5) as com:
+        ans = com.exchage("message")
+        # normal operation
+
+        # request that might time out
+        with com.timeout_override(20):
+            ans = com.exchange("blocking message")
+        
+        # resumed normal operation
+
+Bluetooth
+---------
+
+Newer instruments (particularly robotic total stations) might come with
+built-in or attachable bluetooth connection capabilities (e.g. Leica TS15
+with radio handle). These instruments communicate over Serial Port Profile
+Bluetooth Classic, that emulates a direct line serial connection.
+
+.. note::
+
+    In case of Leica instruments and GeoCom, the GeoCom interface on the
+    instrument might have to be manually switched to the bluetooth device,
+    before initiating a connection. Make sure to sync the port parameters
+    (e.g. speed, parity) between the instrument and the computer!
+
+To initiate a connection like this, the instrument first has to be paired
+to the controlling computer, and the bluetooth address of the instrument
+must be bound to an RFCOMM port as well.
+
+On windows machines this can be done manually through the Devices and
+Printers in the Control Panel. These RFCOMM devices will typically get one
+of the higher numbered ports, like ``COM9``.
+
+Linux systems will typically use something like
+`bluetoothctl <https://documentation.ubuntu.com/core/explanation/system-snaps/bluetooth/pairing/index.html>`_
+to handle the pairing process, and then ``rfcomm`` command to bind a device
+to an RFCOMM port.
+
+Once the pairing and binding is complete, the connection over bluetooth can
+be opened just like a normal serial line.
+
+.. code-block:: python
+    :caption: Opening connection through an RFCOMM port
+    :linenos:
+
+    from geocompy.communication import open_serial
+
+
+    with open_serial("COM9") as com:
+        com.send("some message")
+
+.. seealso::
+
+    https://youtu.be/6Z4PXct8Rg0?si=db53q6F6NRi2M4BF
+        Video explaining the pairing process between a Raspberry PI and
+        a windows PC. It shows how to properly add an RFCOMM device in
+        the Control Panel.

docs/index.rst

@@ -48,6 +48,7 @@ Content
 
    overview
    introduction
+   connections
    examples
 
 .. toctree::

docs/introduction.rst

@@ -1,7 +1,7 @@
 Introduction
 ============
 
-This page aims to introduce the basic usage, and general concepts of the
+This section aims to introduce the basic usage, and general concepts of the
 package.
 
 Communication
@@ -12,57 +12,11 @@ a direct serial connection (RS232). This is available on almost all products.
 Newer equipment might also come with built-in, or attachable bluetooth
 connection capabilities.
 
-Currently the package only supports serial connections, for which the
-necessary primitives are implemented. Other communication formats may be
-added later.
-
 Communication related definitions can be found in the
-:mod:`~geocompy.communication` module. The main primitive is the
-:class:`~geocompy.communication.SerialConnection` class, that acts as a
-wrapper around a :class:`~serial.Serial` object that implements the actual
-low level serial communication.
-
-.. code-block:: python
-    :caption: Simple serial connection
-    :linenos:
-
-    from serial import Serial
-    from geocompy.communication import SerialConnection
+:mod:`~geocompy.communication` module.
 
-
-    port = Serial("COM1", timeout=15)
-    conn = SerialConnection(port)
-    conn.send("some message")
-    conn.close()  # Closes the wrapped serial port
-
-.. caution::
-    :class: warning
-
-    It is strongly recommended to set a ``timeout`` on the connection. Without
-    a ``timeout`` set, the connection may end up in a perpetual waiting state
-    if the instrument becomes unresponsive. A too small value however might
-    result in premature timeout issues when using slow commands (e.g.
-    motorized functions, measurements).
-
-The :class:`~geocompy.communication.SerialConnection` can also be used as a
-context manager, that automatically closes the serial port when the context
-is left.
-
-.. code-block:: python
-    :caption: Serial connection as context manager
-    :linenos:
-
-    from serial import Serial
-    from geocompy.communication import SerialConnection
-
-
-    port = Serial("COM1", timeout=15)
-    with SerialConnection(port) as conn:
-        conn.send("some message")
-
-To make the connection creation simpler, a utility function is also included
-that can be used similarly to the :func:`open` function of the standard
-library.
+A utility function can be used to open the serial connection, that works
+similarly to the :func:`open` function of the standard library.
 
 .. code-block:: python
     :caption: Creating connection with the utility function
@@ -71,8 +25,13 @@ library.
     from geocompy.communication import open_serial
 
 
-    with open_serial("COM1", timeout=15) as conn:
-        conn.send("some message")
+    with open_serial("COM1", timeout=15) as com:
+        com.send("some message")
+
+.. seealso::
+
+    Communication methods are discussed in more detail in
+    :ref:`page_connections`.
 
 Protocols
 ---------

docs/latexindex.rst

@@ -11,6 +11,7 @@ GeoComPy
 
    overview
    introduction
+   connections
    examples
 
 *****************

src/geocompy/protocols.py

@@ -358,8 +358,7 @@ def parse_response(
         ) = None
     ) -> GeoComResponse[Any]:
         """
-        Parses RPC response and constructs :class:`GeoComResponse`
-        instance.
+        Parses RPC response and constructs `GeoComResponse` instance.
 
         Parameters
         ----------