doc: nrf: bluetooth: Add documentation for the RRSP

This adds documentation for the Ranging Service Ranging Responder.

Signed-off-by: Timothy Keys <[email protected]>

doc/nrf/libraries/bluetooth/services/rrsp.rst

@@ -0,0 +1,56 @@
+.. _rrsp_readme:
+
+Ranging Responder (RRSP)
+########################
+
+.. contents::
+   :local:
+   :depth: 2
+
+Overview
+********
+
+This library implements the Ranging Responder for Channel Sounding with the corresponding set of characteristics defined in the `Ranging Service Specification`_ and the `Ranging Profile Specification`_.
+
+This library supports On Demand Ranging Data.
+
+Configuration
+*************
+
+* :kconfig:option:`CONFIG_BT_RAS` - Enables RREQ and RRSP Kconfig options.
+
+* :kconfig:option:`CONFIG_BT_RAS_MAX_ANTENNA_PATHS` - Sets the maximum number of antenna paths supported by the device.
+  This sets the antenna paths for each step that can be stored inside the Ranging Service.
+  This value must match the supported Channel Sounding capabilities of the device.
+  This affects the per-instance memory usage of the Ranging Service.
+
+* :kconfig:option:`CONFIG_BT_RAS_MODE_3_SUPPORTED` - Sets support for storing Mode 3 Channel Sounding steps.
+  This will allocate memory for the Ranging Service to store Mode 3 Channel Sounding steps.
+  This value must match the supported Channel Sounding capabilities of the device.
+  This affects the per-instance memory usage of the Ranging Service.
+
+* :kconfig:option:`CONFIG_BT_RAS_RRSP` - Enables RRSP Kconfig options.
+
+* :kconfig:option:`CONFIG_BT_RAS_RRSP_AUTO_ALLOC_INSTANCE` - Sets new connections to be allocated a RRSP instance automatically.
+
+* :kconfig:option:`CONFIG_BT_RAS_RRSP_MAX_ACTIVE_CONN` - Sets the number of simultaneously supported RRSP instances.
+
+* :kconfig:option:`CONFIG_BT_RAS_RRSP_RD_BUFFERS_PER_CONN` - Set the number of ranging data buffers per connection.
+
+* :kconfig:option:`CONFIG_BT_RAS_RRSP_LOG_LEVEL` - Sets the logging level of the RRSP library.
+
+Usage
+*****
+
+You can set up the RRSP either as a Channel Sounding Initiator or Reflector.
+
+| See the sample: :file:`samples/bluetooth/channel_sounding_ras_initiator`
+| See the sample: :file:`samples/bluetooth/channel_sounding_ras_reflector`
+
+API documentation
+*****************
+
+| Header file: :file:`include/bluetooth/services/ras.h`
+| Source files: :file:`subsys/bluetooth/services/ras`
+
+.. doxygengroup:: bt_ras

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -567,6 +567,12 @@ Bluetooth libraries and services
 
     * Added the Ranging Service Ranging Requestor library for Channel Sounding.
 
+* :ref:`rrsp_readme` library:
+
+  * Added
+
+    * Added the Ranging Service Ranging Responder library for Channel Sounding.
+
 * :ref:`hogp_readme` library:
 
   * Updated the :c:func:`bt_hogp_rep_read` function to forward the GATT read error code through the registered user callback.