Query regarding spinel frames

[Chandra-s11]

I'm referring https://datatracker.ietf.org/doc/html/draft-rquattle-spinel-unified. #page-63 for Spinel frames.
Section4 in this doc mentions the spinel frames between Host and NCP. RCP also uses same Spinel frames?
All spinel frames(all the properties like Core, stream, MAC, etc) are applicable for both NCP and RCP?

[jwhui]

Spinel protocol is used to support both RCP and NCP models, but different subsets of defined properties are used depending on the model.

You can find the latest documentation in: https://github.com/openthread/openthread/blob/main/src/lib/spinel/spinel.h

You can also find the RCP / NCP implementation in: https://github.com/openthread/openthread/tree/main/src/ncp

Check the OPENTHREAD_RADIO and OPENTHREAD_FTD defines for differences between RCP and NCP respectively.

[abtink]

I'd like to emphasize that the IETF draft at https://datatracker.ietf.org/doc/html/draft-rquattle-spinel-unified should not be considered as the documentation of the Spinel implementation in OpenThread. This draft was part of an earlier (unrealized) effort to expand the scope of Spinel. At the same time, the OpenThread NCP/RCP code itself defined many new properties and behaviors, all of which is documented as part of OpenThread source code itself. As Jonathan mentioned, please refer to the OpenThread documentation in spinel.h

You may also want to check src/ncp/ncp_base_dispatcher.cpp, which indicates which properties are gettable, settable, insertable, and removable under different configurations: OPENTHREAD_FTD, OPENTHREAD_MTD, or OPENTHREAD_RADIO (and others). Note that OPENTHREAD_RADIO is used for an RCP firmware build.

[Chandra-s11]

Thanks a lot abtink and jwhui for your response. This helps me!