.. include:: ../../../../macros.txt
.. include:: ../../../../units.txt

.. _REDUNDANCY_APPLICATION:

Redundancy
==========

Module Files
------------

Driver
^^^^^^

- ``src/app/application/redundancy/redundancy.c``
- ``src/app/application/redundancy/redundancy.h``

Configuration
^^^^^^^^^^^^^

*none*

Unit Test
^^^^^^^^^

- ``tests/unit/app/application/redundancy/test_redundancy.c``

Detailed Description
--------------------

|tbc|

FAQs
----

**Question:**

The database entries ``XXX_BASE`` and ``XXX_REDUNDANCY0`` for cell voltages and
cell temperatures are only read and not written in function
``MRC_ValidateAfeMeasurement()``.
Is that correct?

**Answer:**

It is correct that the cell voltage and cell temperature measurements from the
AFE is just read by the redundancy module.
Function ``MRC_ValidateCellVoltageMeasurement()`` receives the cell voltage
measurement values of the base and the redundant measurement as an input and
validates the measurements.
The validated cell voltages are then written into database entry
``DATA_BLOCK_ID_CELL_VOLTAGE``.
This database entry contains the validated measurements and is consecutively
used from all other modules throughout the BMS.

The same logic is applied to the cell temperature measurement values.
Here, the validated measurements are written into the database entry
``DATA_BLOCK_ID_CELL_TEMPERATURE``.

The database entries ``XXX_BASE`` and ``XXX_REDUNDANCY0`` are used to update
the cell voltage and cell temperature measurements from the AFEs into the
database. The database entry ``XXX_REDUNDANCY0`` will only be used if a redundant
AFE measurement is available. The redundancy module checks the validity of the
measurements and updates the validated measurements into the database entries
``DATA_BLOCK_ID_CELL_VOLTAGE`` and ``DATA_BLOCK_ID_CELL_TEMPERATURE``, which
are then used by all other modules, such as the SOX algorithm.

Further Reading
---------------

- :ref:`BMS_VALUES_APPLICATION`
- :ref:`PLAUSIBILITY_APPLICATION`