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)
58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
// Send a JSON object on UDP at regular interval
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//
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// You can easily test this program with netcat:
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// $ nc -ulp 8888
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//
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// by Benoit Blanchon, MIT License 2015-2017
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#include <ArduinoJson.h>
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#include <Ethernet.h>
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#include <SPI.h>
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byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
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IPAddress localIp(192, 168, 0, 177);
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IPAddress remoteIp(192, 168, 0, 109);
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unsigned int remotePort = 8888;
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unsigned localPort = 8888;
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EthernetUDP udp;
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JsonObject& buildJson(JsonBuffer& jsonBuffer) {
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JsonObject& root = jsonBuffer.createObject();
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JsonArray& analogValues = root.createNestedArray("analog");
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for (int pin = 0; pin < 6; pin++) {
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int value = analogRead(pin);
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analogValues.add(value);
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}
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JsonArray& digitalValues = root.createNestedArray("digital");
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for (int pin = 0; pin < 14; pin++) {
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int value = digitalRead(pin);
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digitalValues.add(value);
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}
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return root;
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}
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void sendJson(JsonObject& json) {
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udp.beginPacket(remoteIp, remotePort);
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json.printTo(udp);
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udp.println();
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udp.endPacket();
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}
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void setup() {
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Ethernet.begin(mac, localIp);
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udp.begin(localPort);
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}
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void loop() {
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delay(1000);
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// Use https://bblanchon.github.io/ArduinoJson/assistant/ to
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// compute the right size for the buffer
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StaticJsonBuffer<300> jsonBuffer;
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JsonObject& json = buildJson(jsonBuffer);
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sendJson(json);
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}
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