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orion-rf.piolibdepsesp32-s3-n16r8ArduinoJsonREADME.md

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1<p align="center">
2 <a href="https://arduinojson.org/"><img alt="ArduinoJson" src="https://arduinojson.org/images/logo.svg" width="200" /></a>
3</p>
4
5---
6
7[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/bblanchon/ArduinoJson/ci.yml?branch=7.x&logo=github)](https://github.com/bblanchon/ArduinoJson/actions?query=workflow%3A%22Continuous+Integration%22+branch%3A7.x)
8[![Continuous Integration](https://ci.appveyor.com/api/projects/status/m7s53wav1l0abssg/branch/7.x?svg=true)](https://ci.appveyor.com/project/bblanchon/arduinojson/branch/7.x)
9[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/arduinojson.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:arduinojson)
10[![Coveralls branch](https://img.shields.io/coveralls/github/bblanchon/ArduinoJson/7.x?logo=coveralls)](https://coveralls.io/github/bblanchon/ArduinoJson?branch=7.x)
11[![GitHub stars](https://img.shields.io/github/stars/bblanchon/ArduinoJson?style=flat&logo=github&color=orange)](https://github.com/bblanchon/ArduinoJson/stargazers)
12[![GitHub Sponsors](https://img.shields.io/github/sponsors/bblanchon?logo=github&color=orange)](https://github.com/sponsors/bblanchon)
13
14ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).
15
16## Features
17
18* [JSON deserialization](https://arduinojson.org/v7/api/json/deserializejson/)
19 * [Optionally decodes UTF-16 escape sequences to UTF-8](https://arduinojson.org/v7/api/config/decode_unicode/)
20 * [Optionally supports comments in the input](https://arduinojson.org/v7/api/config/enable_comments/)
21 * [Optionally filters the input to keep only desired values](https://arduinojson.org/v7/api/json/deserializejson/#filtering)
22 * Supports single quotes as a string delimiter
23 * Compatible with [NDJSON](http://ndjson.org/) and [JSON Lines](https://jsonlines.org/)
24* [JSON serialization](https://arduinojson.org/v7/api/json/serializejson/)
25 * [Can write to a buffer or a stream](https://arduinojson.org/v7/api/json/serializejson/)
26 * [Optionally indents the document (prettified JSON)](https://arduinojson.org/v7/api/json/serializejsonpretty/)
27* [MessagePack serialization](https://arduinojson.org/v7/api/msgpack/serializemsgpack/)
28* [MessagePack deserialization](https://arduinojson.org/v7/api/msgpack/deserializemsgpack/)
29* Efficient
30 * [Twice smaller than the "official" Arduino_JSON library](https://arduinojson.org/2019/11/19/arduinojson-vs-arduino_json/)
31 * [Almost 10% faster than the "official" Arduino_JSON library](https://arduinojson.org/2019/11/19/arduinojson-vs-arduino_json/)
32 * [Consumes roughly 10% less RAM than the "official" Arduino_JSON library](https://arduinojson.org/2019/11/19/arduinojson-vs-arduino_json/)
33 * [Deduplicates strings](https://arduinojson.org/news/2020/08/01/version-6-16-0/)
34* Versatile
35 * Supports [custom allocators (to use external RAM chip, for example)](https://arduinojson.org/v7/how-to/use-external-ram-on-esp32/)
36 * Supports [`String`](https://arduinojson.org/v7/api/config/enable_arduino_string/), [`std::string`](https://arduinojson.org/v7/api/config/enable_std_string/), and [`std::string_view`](https://arduinojson.org/v7/api/config/enable_string_view/)
37 * Supports [`Stream`](https://arduinojson.org/v7/api/config/enable_arduino_stream/) and [`std::istream`/`std::ostream`](https://arduinojson.org/v7/api/config/enable_std_stream/)
38 * Supports [Flash strings](https://arduinojson.org/v7/api/config/enable_progmem/)
39 * Supports [custom readers](https://arduinojson.org/v7/api/json/deserializejson/#custom-reader) and [custom writers](https://arduinojson.org/v7/api/json/serializejson/#custom-writer)
40 * Supports [custom converters](https://arduinojson.org/news/2021/05/04/version-6-18-0/)
41* Portable
42 * Usable on any C++ project (not limited to Arduino)
43 * Compatible with C++11, C++14 and C++17
44 * Support for C++98/C++03 available on [ArduinoJson 6.20.x](https://github.com/bblanchon/ArduinoJson/tree/6.20.x)
45 * Zero warnings with `-Wall -Wextra -pedantic` and `/W4`
46 * [Header-only library](https://en.wikipedia.org/wiki/Header-only)
47 * Works with virtually any board
48 * Arduino boards: [Uno](https://amzn.to/38aL2ik), [Due](https://amzn.to/36YkWi2), [Micro](https://amzn.to/35WkdwG), [Nano](https://amzn.to/2QTvwRX), [Mega](https://amzn.to/36XWhuf), [Yun](https://amzn.to/30odURc), [Leonardo](https://amzn.to/36XWjlR)...
49 * Espressif chips: [ESP8266](https://amzn.to/36YluV8), [ESP32](https://amzn.to/2G4pRCB)
50 * Lolin (WeMos) boards: [D1 mini](https://amzn.to/2QUpz7q), [D1 Mini Pro](https://amzn.to/36UsGSs)...
51 * Teensy boards: [4.0](https://amzn.to/30ljXGq), [3.2](https://amzn.to/2FT0EuC), [2.0](https://amzn.to/2QXUMXj)
52 * Particle boards: [Argon](https://amzn.to/2FQHa9X), [Boron](https://amzn.to/36WgLUd), [Electron](https://amzn.to/30vEc4k), [Photon](https://amzn.to/387F9Cd)...
53 * Texas Instruments boards: [MSP430](https://amzn.to/30nJWgg)...
54 * Soft cores: [Nios II](https://en.wikipedia.org/wiki/Nios_II)...
55 * Tested on all major development environments
56 * [Arduino IDE](https://www.arduino.cc/en/Main/Software)
57 * [Atmel Studio](http://www.atmel.com/microsite/atmel-studio/)
58 * [Atollic TrueSTUDIO](https://atollic.com/truestudio/)
59 * [Energia](http://energia.nu/)
60 * [IAR Embedded Workbench](https://www.iar.com/iar-embedded-workbench/)
61 * [Keil uVision](http://www.keil.com/)
62 * [MPLAB X IDE](http://www.microchip.com/mplab/mplab-x-ide)
63 * [Particle](https://www.particle.io/)
64 * [PlatformIO](http://platformio.org/)
65 * [Sloeber plugin for Eclipse](https://eclipse.baeyens.it/)
66 * [Visual Micro](http://www.visualmicro.com/)
67 * [Visual Studio](https://www.visualstudio.com/)
68 * [Even works with online compilers like wandbox.org](https://wandbox.org/permlink/RlZSKy17DjJ6HcdN)
69 * [CMake friendly](https://arduinojson.org/v7/how-to/use-arduinojson-with-cmake/)
70* Well designed
71 * [Elegant API](http://arduinojson.org/v7/example/)
72 * [Thread-safe](https://en.wikipedia.org/wiki/Thread_safety)
73 * Self-contained (no external dependency)
74 * `const` friendly
75 * [`for` friendly](https://arduinojson.org/v7/api/jsonobject/begin_end/)
76 * [TMP friendly](https://en.wikipedia.org/wiki/Template_metaprogramming)
77 * Handles [integer overflows](https://arduinojson.org/v7/api/jsonvariant/as/#integer-overflows)
78* Well tested
79 * [Unit test coverage close to 100%](https://coveralls.io/github/bblanchon/ArduinoJson?branch=7.x)
80 * Continuously tested on
81 * [Visual Studio 2017, 2019, 2022](https://ci.appveyor.com/project/bblanchon/arduinojson/branch/7.x)
82 * [GCC 4.8, 5, 6, 7, 8, 9, 10, 11, 12](https://github.com/bblanchon/ArduinoJson/actions?query=workflow%3A%22Continuous+Integration%22)
83 * [Clang 7 to 19](https://github.com/bblanchon/ArduinoJson/actions?query=workflow%3A%22Continuous+Integration%22)
84 * [Continuously fuzzed with Google OSS Fuzz](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:arduinojson)
85 * Passes all default checks of [clang-tidy](https://releases.llvm.org/10.0.0/tools/clang/tools/extra/docs/clang-tidy/)
86* Well documented
87 * [Tutorials](https://arduinojson.org/v7/doc/deserialization/)
88 * [Examples](https://arduinojson.org/v7/example/)
89 * [How-tos](https://arduinojson.org/v7/example/)
90 * [FAQ](https://arduinojson.org/v7/faq/)
91 * [Troubleshooter](https://arduinojson.org/v7/troubleshooter/)
92 * [Book](https://arduinojson.org/book/)
93 * [Changelog](CHANGELOG.md)
94* Vibrant user community
95 * Most popular of all Arduino libraries on [GitHub](https://github.com/search?o=desc&q=arduino+library&s=stars&type=Repositories)
96 * [Used in hundreds of projects](https://www.hackster.io/search?i=projects&q=arduinojson)
97 * [Responsive support](https://github.com/bblanchon/ArduinoJson/issues?q=is%3Aissue+is%3Aclosed)
98
99## Quickstart
100
101### Deserialization
102
103Here is a program that parses a JSON document with ArduinoJson.
104
105```c++
106const char* json = "{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";
107
108JsonDocument doc;
109deserializeJson(doc, json);
110
111const char* sensor = doc["sensor"];
112long time = doc["time"];
113double latitude = doc["data"][0];
114double longitude = doc["data"][1];
115```
116
117See the [tutorial on arduinojson.org](https://arduinojson.org/v7/doc/deserialization/)
118
119### Serialization
120
121Here is a program that generates a JSON document with ArduinoJson:
122
123```c++
124JsonDocument doc;
125
126doc["sensor"] = "gps";
127doc["time"] = 1351824120;
128doc["data"][0] = 48.756080;
129doc["data"][1] = 2.302038;
130
131serializeJson(doc, Serial);
132// This prints:
133// {"sensor":"gps","time":1351824120,"data":[48.756080,2.302038]}
134```
135
136See the [tutorial on arduinojson.org](https://arduinojson.org/v7/doc/serialization/)
137
138## Sponsors
139
140ArduinoJson is thankful to its sponsors. Please give them a visit; they deserve it!
141
142<p>
143 <a href="https://github.com/1technophile" rel="sponsored">
144 <img alt="1technophile" src="https://avatars.githubusercontent.com/u/12672732?s=40&v=4">
145 </a>
146 <a href="https://github.com/LArkema" rel="sponsored">
147 <img alt="LArkema" src="https://avatars.githubusercontent.com/u/38381313?s=40&v=4">
148 </a>
149</p>
150
151If you run a commercial project that embeds ArduinoJson, think about [sponsoring the library's development](https://github.com/sponsors/bblanchon): it ensures the code that your products rely on stays actively maintained. It can also give your project some exposure to the makers' community.
152
153If you are an individual user and want to support the development (or give a sign of appreciation), consider purchasing the book [Mastering ArduinoJson](https://arduinojson.org/book/)&nbsp;❤, or simply [cast a star](https://github.com/bblanchon/ArduinoJson/stargazers)&nbsp;⭐.