ArduinoJson supports MessagePack serialization and deserialization.

It supports all MessagePack features except bin format and timestamp.

To install ArduinoJson, you can either:

• install the library from the Arduino Library Manager,
• install the library from the Particle Web IDE, or
• download the single header from the release page.

See also: How to install ArduinoJson on arduinojson.org.

StaticJsonDocument<200> doc;
doc["hello"] = "world";
serializeMsgPack(doc, Serial);

See also: serializeMsgPack() on arduinojson.org.

StaticJsonDocument<200> doc;
deserializeMsgPack(doc, input);
const char* hello = doc["hello"];

See also: deserializeMsgPack() and MsgPackParser.ino on arduinojson.org.