.. _softdevice_controller:

SoftDevice Controller
###########################

The |controller| is an RTOS-agnostic library built for the Nordic Semiconductor nRF52 and nRF53 Series.
It supports Bluetooth 5.
The library utilizes services provided by the :ref:`mpsl`.

The |controller| is distributed in different variants containing different features.
Variants for the Arm Cortex-M4 processor are available as soft-float, softfp-float, and hard-float.
Variants for the Arm Cortex-M33 processor are available as soft-float only.

|BLE| feature support:

+--------------------------------+-----------------+--------------+-----------+
|                                | Peripheral-only | Central-only | Multirole |
+================================+=================+==============+===========+
| 2 Mbps PHY                     | X               | X            | X         |
+--------------------------------+-----------------+--------------+-----------+
| Advertiser                     | X               |              | X         |
+--------------------------------+-----------------+--------------+-----------+
| Slave                          | X               |              | X         |
+--------------------------------+-----------------+--------------+-----------+
| Scanner                        |                 | X            | X         |
+--------------------------------+-----------------+--------------+-----------+
| Master                         |                 | X            | X         |
+--------------------------------+-----------------+--------------+-----------+
| Data Length Extensions         | X               | X            | X         |
+--------------------------------+-----------------+--------------+-----------+
| Advertising Extensions         |                 |              | X         |
+--------------------------------+-----------------+--------------+-----------+
| Periodic Advertising           |                 |              | X         |
+--------------------------------+-----------------+--------------+-----------+
| Connectionless CTE Advertising |                 |              | X         |
+--------------------------------+-----------------+--------------+-----------+
| Coded PHY (Long Range)         |                 |              | X         |
+--------------------------------+-----------------+--------------+-----------+

.. note::
   Periodic Advertising is supported as an experimental feature on the nRF53 Series.
   For Connectionless CTE Advertising, angle of arrival (AoA) is supported as an experimental feature, but angle of departure (AoD) is not supported.

Proprietary feature support:

+--------------------------+-----------------+--------------+-----------+-----------------------------------------------------------------------------+
|                          | Peripheral-only | Central-only | Multirole | Description                                                                 |
+==========================+=================+==============+===========+=============================================================================+
| Low Latency Packet mode  |                 |              | X         | Enables using connection intervals below 7.5 ms                             |
+--------------------------+-----------------+--------------+-----------+-----------------------------------------------------------------------------+
| QoS Conn Event Reports   | X               | X            | X         | Reports QoS for every connection event.                                     |
|                          |                 |              |           | The application can then set an adapted channel map to avoid busy channels. |
+--------------------------+-----------------+--------------+-----------+-----------------------------------------------------------------------------+


.. note::

   Low Latency Packet mode is not supported on the nRF53 Series.

.. toctree::
   :maxdepth: 2
   :caption: Subpages:

   doc/softdevice_controller
   doc/scheduling
   doc/bluetooth_coex_example_diagrams
   limitations
   CHANGELOG
   doc/api