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58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
// ArduinoJson - arduinojson.org
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// Copyright Benoit Blanchon 2014-2019
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// MIT License
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//
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// This example shows how to generate a JSON document with ArduinoJson.
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#include <iostream>
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#include "ArduinoJson.h"
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int main() {
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// The JSON document
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//
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// Inside the brackets, 200 is the RAM allocated to this document.
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// Don't forget to change this value to match your requirement.
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// Use arduinojson.org/assistant to compute the capacity.
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StaticJsonDocument<200> doc;
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// StaticJsonObject allocates memory on the stack, it can be
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// replaced by DynamicJsonDocument which allocates in the heap.
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//
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// DynamicJsonDocument doc(200);
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// Make our document be an object
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JsonObject root = doc.to<JsonObject>();
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// Add values in the object
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//
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// Most of the time, you can rely on the implicit casts.
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// In other case, you can do root.set<long>("time", 1351824120);
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root["sensor"] = "gps";
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root["time"] = 1351824120;
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// Add an array.
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//
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JsonArray data = root.createNestedArray("data");
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data.add(48.756080);
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data.add(2.302038);
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serializeJson(root, std::cout);
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// This prints:
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// {"sensor":"gps","time":1351824120,"data":[48.756080,2.302038]}
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std::cout << std::endl;
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serializeJsonPretty(root, std::cout);
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// This prints:
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// {
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// "sensor": "gps",
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// "time": 1351824120,
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// "data": [
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// 48.756080,
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// 2.302038
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// ]
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// }
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return 0;
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}
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