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40 lines
2.0 KiB
Markdown
40 lines
2.0 KiB
Markdown
Arduino JSON library
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====================
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*A simple and efficient JSON library for embedded systems.*
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It's design to be very lightweight, works without any allocation on the heap (no malloc).
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It has been written with Arduino in mind, but it isn't linked to Arduino libraries so you can use this library on any other C++ project (in fact it's been written with Visual Studio ;-)
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# Features:
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* JSON decoding: [more details here](/JsonParser/)
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* JSON encoding: [more details here](/JsonGenerator/)
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* Elegant API, very easy to use
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* Fixed memory allocation (no malloc)
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* Small footprint
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* MIT License
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# Feature comparisons
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| Library | Memory allocation | Nested objects | Encoding | Code size |
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| ------------ | ----------------- | -------------- | -------- | --------- |
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| Arduino JSON | static | yes | yes | 2.7 kB |
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| [json-arduino v1.5]( https://github.com/not404/json-arduino) | dynamic | no | no | 3.4 kB (+28%) |
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| [aJson v1.0](https://github.com/interactive-matter/aJson) | dynamic | yes | yes | 5.2 kB (+94%) |
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Code size was measured with a program parsing `{"sensor":"outdoor","value":25.6}`.
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For each library, I wrote a program that extracts a string and a float. I subtracted the size of a program doing the same without any JSON parsing involved. The target platform was an Arduino Duemilanove.
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# Testimonials
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From Arduino's Forum user `jflaplante`:
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> I tried the [aJson and json-arduino] before trying your library. I always ran into memory problem after a while.
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> I have no such problem so far with your library. It is working perfectly with my web services.
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From Arduino's Forum user `gbathree`:
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> Thanks so much - this is an awesome library! If you want to see what we're doing with it - the project is located at www.photosynq.org.
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From StackOverflow user `thegreendroid`:
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> It has a really elegant, simple API and it works like a charm on embedded and Windows/Linux platforms. We recently started using this on an embedded project and I can vouch for its quality. |