Nanopb protocol buffer in QSH

The QSH uses nanopb protocol buffer for the following scenarios:

To exchange request and event messages between sensors using the nanopb protocol format:
- A sensor or sensor instance must encode the payload (if present) for all requests it sends to its dependents.
- A sensor or sensor instance must decode the payload (if present) for all requests it receives.
- A sensor or sensor instance must encode the payload (if present) for all events it publishes.
- A sensor or sensor instance must decode the payload (if present) for all events it receives from its dependents.
.. note:: Certain requests or events don’t have a message body. In this case, decoding or encoding the payload isn’t expected, and the sensor processes these messages based on their message ID.
To represent the attribute data:
- All attribute values are in the nanopb-encoded format.
To transmit the diagnostic log packet payloads:
- All payloads in the diagnostic log packets are in the nanopb-encoded format.