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65 lines
1.8 KiB
65 lines
1.8 KiB
// ArduinoJson - https://arduinojson.org |
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// Copyright © 2014-2024, Benoit BLANCHON |
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// MIT License |
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// |
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// This example shows how to deserialize a JSON document with ArduinoJson. |
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// |
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// https://arduinojson.org/v7/example/parser/ |
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#include <ArduinoJson.h> |
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void setup() { |
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// Initialize serial port |
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Serial.begin(9600); |
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while (!Serial) |
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continue; |
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// Allocate the JSON document |
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JsonDocument doc; |
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// JSON input string. |
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const char* json = |
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"{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}"; |
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// Deserialize the JSON document |
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DeserializationError error = deserializeJson(doc, json); |
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// Test if parsing succeeds |
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if (error) { |
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Serial.print(F("deserializeJson() failed: ")); |
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Serial.println(error.f_str()); |
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return; |
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} |
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// Fetch the values |
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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 doc["time"].as<long>(); |
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const char* sensor = doc["sensor"]; |
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long time = doc["time"]; |
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double latitude = doc["data"][0]; |
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double longitude = doc["data"][1]; |
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// Print the values |
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Serial.println(sensor); |
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Serial.println(time); |
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Serial.println(latitude, 6); |
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Serial.println(longitude, 6); |
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} |
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void loop() { |
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// not used in this example |
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} |
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// See also |
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// -------- |
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// |
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// https://arduinojson.org/ contains the documentation for all the functions |
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// used above. It also includes an FAQ that will help you solve any |
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// deserialization problem. |
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// |
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// The book "Mastering ArduinoJson" contains a tutorial on deserialization. |
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// It begins with a simple example, like the one above, and then adds more |
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// features like deserializing directly from a file or an HTTP request. |
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// Learn more at https://arduinojson.org/book/ |
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// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
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