Skip to content

ArduinoJson 6.8.0-beta

Pre-release
Pre-release
Compare
Choose a tag to compare
@bblanchon bblanchon released this 30 Jan 15:49
v6.8.0-beta
169c834

Looking for a human-readable version?
📰 Read the article on arduinojson.org

Special note ⚠️

ArduinoJson 6 requires updating code written for version 5.
See the migration guide for details.

Changes since 6.7.0-beta

  • Import functions in the ArduinoJson namespace to get clearer errors
  • Improved syntax highlighting in Arduino IDE
  • Removed default capacity of DynamicJsonDocument
  • JsonArray::copyFrom() accepts JsonArrayConst
  • JsonVariant::set() accepts JsonArrayConst and JsonObjectConst
  • JsonDocument was missing in the ArduinoJson namespace
  • Added memoryUsage() to JsonArray, JsonObject, and JsonVariant
  • Added nesting() to JsonArray, JsonDocument, JsonObject, and JsonVariant
  • Replaced JsonDocument::nestingLimit with an additional parameter
    to deserializeJson() and deserializeMsgPack()
  • Fixed uninitialized variant in JsonDocument
  • Fixed StaticJsonDocument copy constructor and copy assignment
  • The copy constructor of DynamicJsonDocument chooses the capacity according to the memory usage of the source, not from the capacity of the source.
  • Added the ability to create/assign a StaticJsonDocument/DynamicJsonDocument from a JsonArray/JsonObject/JsonVariant
  • Added JsonDocument::isNull()
  • Added JsonDocument::operator[]
  • Added ARDUINOJSON_TAB to configure the indentation character
  • Reduced the size of the pretty JSON serializer
  • Added add(), createNestedArray() and createNestedObject() to JsonVariant
  • JsonVariant automatically promotes to JsonObject or JsonArray on write.
    Calling JsonVariant::to<T>() is not required anymore.
  • JsonDocument now support the same operations as JsonVariant.
    Calling JsonDocument::as<T>() is not required anymore.
  • Fixed example JsonHttpClient.ino
  • User can now use a JsonString as a key or a value

View version history

BREAKING CHANGES ⚠️

DynamicJsonDocument's constructor

The parameter to the constructor of DynamicJsonDocument is now mandatory

Old code:

DynamicJsonDocument doc;

New code:

DynamicJsonDocument doc(1024);

Nesting limit

JsonDocument::nestingLimit was replaced with a new parameter to deserializeJson() and deserializeMsgPack().

Old code:

doc.nestingLimit = 15;
deserializeJson(doc, input);

New code:

deserializeJson(doc, input, DeserializationOption::NestingLimit(15));

How to install

There are several ways to install ArduinoJson, from simpler to more complex:

  1. Use the Arduino Library Manager
  2. Download ArduinoJson-v6.8.0-beta.h put it in your project folder
  3. Download ArduinoJson-v6.8.0-beta.zip and extract it in you libraries folder

Note: ArduinoJson-v6.8.0-beta.h are ArduinoJson-v6.8.0-beta.hpp are almost identical; the difference is that the .hpp keeps everything in the ArduinoJson namespace.

Try online

Assets 5
Loading