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Is it possible to make Google Protocol Buffers work in Arduino?
I have been trying for about a week and can't make it work, and I would like to know if it's even possible.
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Protocol buffers are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data – think XML, but smaller, faster, and simpler.
Protobuf supports more data types than JSON. JSON is limited to certain python objects, and it cannot serialize every python object. Protobuf supports a wider range of data types when compared to JSON. For example, enumerations and methods are supported by Protobuf and not supported by JSON.
Protocol buffers provide a language-neutral, platform-neutral, extensible mechanism for serializing structured data in a forward-compatible and backward-compatible way. It's like JSON, except it's smaller and faster, and it generates native language bindings.
This should fit on an Arduino: https://github.com/nanopb/nanopb
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I've managed, after several attempts, to compile google protocol buffers for Arduino (using lite runtime), and still, the resulting code size was way over the 32k limit. So, for now, GPB isn't a viable option for Arduino projects. (maybe on Arduino Mega?)
I suggest you look at MQTT for a suitable replacement (I'll do that).
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