Merge pull request #6900 from tekktrik/doc/add-more-documentation

Doc/add more documentation

shared-bindings/aesio/__init__.c

@@ -34,7 +34,11 @@
 //| """AES encryption routines
 //|
 //| The `AES` module contains classes used to implement encryption
-//| and decryption. It aims to be low overhead in terms of memory."""
+//| and decryption. It aims to be low overhead in terms of memory.
+//|
+//| For more information on AES, refer to `the Wikipedia entry
+//| <https://en.wikipedia.org/wiki/Advanced_Encryption_Standard>`_.
+//| """
 
 
 STATIC const mp_obj_tuple_t mp_aes_key_size_obj = {

shared-bindings/audioio/__init__.c

@@ -42,6 +42,10 @@
 //| call :py:meth:`!deinit` or use a context manager. See
 //| :ref:`lifetime-and-contextmanagers` for more info.
 //|
+//| For more information on working with this module, refer to the
+//| `CircuitPython Essentials Learn Guide
+//| <https://learn.adafruit.com/circuitpython-essentials/circuitpython-audio-out>`_.
+//|
 //| Since CircuitPython 5, `RawSample` and `WaveFile` are moved
 //| to :mod:`audiocore`, and `Mixer` is moved to :mod:`audiomixer`.
 //|

shared-bindings/canio/__init__.c

@@ -54,6 +54,9 @@
 //| Other implementations of the CAN device may exist (for instance, attached
 //| via an SPI bus).  If so their constructor arguments may differ, but
 //| otherwise we encourage implementors to follow the API that the core uses.
+//|
+//| For more information on working with this module, refer to
+//| `this Learn Guide on using it <https://learn.adafruit.com/using-canio-circuitpython>`_.
 //| """
 //|
 

shared-bindings/countio/__init__.c

@@ -13,6 +13,10 @@
 //|
 //| The `countio` module contains logic to read and count edge transistions
 //|
+//| For more information on the applications of counting edges, see
+//| `this Learn Guide on sequential circuits
+//| <https://learn.adafruit.com/digital-circuits-4-sequential-circuits>`_.
+//|
 //| All classes change hardware state and should be deinitialized when they
 //| are no longer needed if the program continues after use. To do so, either
 //| call :py:meth:`!deinit` or use a context manager. See

shared-bindings/rotaryio/__init__.c

@@ -39,6 +39,9 @@
 //| `Wikipedia's Rotary Encoder page <https://en.wikipedia.org/wiki/Rotary_encoder>`_ for more
 //| background.
 //|
+//| For more information on working with rotary encoders using this library, see
+//| `this Learn Guide <https://learn.adafruit.com/rotary-encoder>`_.
+//|
 //| All classes change hardware state and should be deinitialized when they
 //| are no longer needed if the program continues after use. To do so, either
 //| call :py:meth:`!deinit` or use a context manager. See