299bed1c05
5.9.1f * Upgrade library ArduinoJson to 5.11.2 * Upgrade library IRRemoteEsp8266 to 2.2.1 + 2 commits but tweaked some protocols to keep code usage small * Upgrade library NeoPixelBus to 2.2.9 * Upgrade library OneWire to 2.3.3 + 6 commits * Formalize library PubSubClient to 2.6 + 9 commits and additional delay * Add optional ADS1115 driver as alternative for unsupported I2Cdevlib in esp8266-core 2.4.0-rc2 * Fix wrong response name for command HlwISet (#1214)
57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
// Copyright Benoit Blanchon 2014-2017
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// MIT License
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//
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// Arduino JSON library
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// https://github.com/bblanchon/ArduinoJson
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// If you like this project, please add a star!
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#include <ArduinoJson.h>
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// About
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// -----
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// This example shows the different ways you can use PROGMEM with ArduinoJson.
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// Please don't see this as an invitation to use PROGMEM.
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// On the contrary, you should always use char[] when possible, it's much more
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// efficient in term of code size, speed and memory usage.
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void setup() {
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#ifdef PROGMEM
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DynamicJsonBuffer jsonBuffer;
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// You can use a Flash String as your JSON input.
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// WARNING: the content of the Flash String will be duplicated in the
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// JsonBuffer.
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JsonObject& root =
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jsonBuffer.parseObject(F("{\"sensor\":\"gps\",\"time\":1351824120,"
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"\"data\":[48.756080,2.302038]}"));
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// You can use a Flash String to get an element of a JsonObject
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// No duplication is done.
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long time = root[F("time")];
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// You can use a Flash String to set an element of a JsonObject
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// WARNING: the content of the Flash String will be duplicated in the
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// JsonBuffer.
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root[F("time")] = time;
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// You can set a Flash String to a JsonObject or JsonArray:
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// WARNING: the content of the Flash String will be duplicated in the
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// JsonBuffer.
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root["sensor"] = F("gps");
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// You can compare the content of a JsonVariant to a Flash String
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if (root["sensor"] == F("gps")) {
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// ...
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}
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#else
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#warning PROGMEM is not supported on this platform
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#endif
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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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