docs: Add NB-IoT Module document.

Signed-off-by: lbuque <[email protected]>

Author: lbuque

docs/en/module/index.rst

@@ -12,6 +12,7 @@ Module
     hmi.rst
     lora.rst
     lorawan868.rst
+    nbiot.rst
     plus.rst
     pps.rst
     rca.rst

docs/en/module/nbiot.rst

@@ -0,0 +1,30 @@
+NB-IoT Module
+=============
+
+.. include:: ../refs/module.nbiot.ref
+
+The following products are supported:
+
+    |NB-IoT Module|
+
+
+class NBIOTModule
+-----------------
+
+Constructors
+------------
+
+.. class:: NBIOTModule(id: Literal[0, 1, 2], tx: int, rx: int)
+
+    Create a NBIOTModule object
+
+    :param id: UART ID.
+    :param int tx: the UART TX pin.
+    :param int rx: the UART RX pin.
+
+    UIFLOW2:
+
+        |init.png|
+
+
+See :ref:`unit.NBIOTUnit.Methods <unit.NBIOTUnit.Methods>` for more details.

docs/en/refs/module.nbiot.ref

@@ -0,0 +1,7 @@
+.. |NB-IoT Module| image:: https://static-cdn.m5stack.com/resource/docs/products/module/comx_nb-iot/comx_nb-iot_01.webp
+    :target: https://docs.m5stack.com/en/module/comx_nb-iot
+    :height: 200px
+    :width: 200px
+
+
+.. |init.png| image:: https://static-cdn.m5stack.com/mpy_docs/module/nbiot/init.png

docs/en/units/nbiot.rst

@@ -56,6 +56,7 @@ Constructors
 
         |init.png|
 
+.. _unit.NBIOTUnit.Methods:
 
 Methods
 -------