Thread certification questions

RE: Thread certification questions

SwRa — Thu, 22 May 2025 12:39:30 GMT

Hello,

For Thread certification, such as the #14A064 CID for the nRF52840 FTD optimized feature set, the certified pre-built library is libopenthread-ftd.a. This is the core Full Thread Device (FTD) stack implementation used for certification. The libopenthread-cli-ftd.a library is an optional add-on that provides a Command Line Interface (CLI) for development and debugging.

See here: https://docs.nordicsemi.com/bundle/nrf5_sdk_thread_zigbee/page/thread_openthread_libraries.html#thread_openthread_libraries_optional_cli_840

Best Regards,

Swathy

RE: Thread certification questions

susepc — Wed, 21 May 2025 09:32:33 GMT

SwRa

Thanks for your response!

If we choose CONFIG_OPENTHREAD_NORDIC_LIBRARY_FTD(for FTD optimized), the FTD pre-build(libopenthread-ftd.a) lib will be selected.

And it will be used for matter bulb project.

However, there is another FTD pre-build lib, libopenthread-cli-ftd.a. We would like to know which pre-build lib of FTD be used for product certified?

For example, #14A064 is CID of FTD optimized feature(nfr52840). Which pre-build lib (libopenthread-ftd.a or libopenthread-cli-ftd.a) was used for #14A064 CID? If we want to inherit #14A064 CID for matter/thread device, Which pre-build lib (libopenthread-ftd.a or libopenthread-cli-ftd.a) can be used for product certified?

Chuan

RE: Thread certification questions

SwRa — Tue, 20 May 2025 13:07:14 GMT

Hello,

The Thread certification (CID) is granted for the feature set (e.g., FTD optimized), not for individual libraries like CLI or non-CLI. Both `libopenthread-cli-ftd.a` and `libopenthread-ftd.a` are part of the FTD stack variant. The certification applies to the FTD feature set as a whole, which includes both CLI and non-CLI libraries.

The same istrue for MTD as well. The certification is for the MTD feature set as a whole, not for individual libraries. Both CLI and non-CLI MTD libraries are included in the MTD stack variant, and the Thread CID applies to the entire MTD feature set.

The Thread CID's for the FTD optimized and MTD optimized feature sets can be found in the compatibility matrix. For nrf52840: https://docs.nordicsemi.com/bundle/comp_matrix_nrf52840/page/COMP/nrf52840/nrf52840_thread_cids.html

Best Regards,

Swathy