The Thingsml library helps you create and parse senml documents in both json and cbor format.

Read the docs here

• Object oriented design.
• Built in support for senml's unit registry
• Extensible for new data types
• Makes use of (but doesn't restrict to) ThingsML predefined list of record names via ThingsML indices.
• Direct support to read/write in json and cbor format.
• Automatically adjusts record data with respect to base time, base value & base sum.
• The library is optimized for devices with restricted memory requirements (runs on AVR systems with 1KB ram).

• Examples
• Documentation
• Tests

Bazel can be installed from here: https://docs.bazel.build/versions/master/install.html
Run the unit tests using:

bazel test test --test_output=all

Install using the built in library manager, search for "ThingsML".
The library includes various examples which can be openened from the examples dropdown.