56 lines
1.5 KiB
Arduino
56 lines
1.5 KiB
Arduino
 
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#include <Ethernet.h>
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#include <ArduinoHA.h>
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#define BROKER_ADDR IPAddress(192,168,0,17)
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byte mac[] = {0x00, 0x10, 0xFA, 0x6E, 0x38, 0x4A};
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EthernetClient client;
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HADevice device(mac, sizeof(mac));
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HAMqtt mqtt(client, device);
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void onMqttMessage(const char* topic, const uint8_t* payload, uint16_t length) {
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// This callback is called when message from MQTT broker is received.
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// Please note that you should always verify if the message's topic is the one you expect.
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// For example: if (memcmp(topic, "myCustomTopic") == 0) { ... }
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Serial.print("New message on topic: ");
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Serial.println(topic);
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Serial.print("Data: ");
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Serial.println((const char*)payload);
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mqtt.publish("myPublishTopic", "hello");
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}
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void onMqttConnected() {
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Serial.println("Connected to the broker!");
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// You can subscribe to custom topic if you need
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mqtt.subscribe("myCustomTopic");
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}
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void onMqttConnectionFailed() {
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Serial.println("Failed to connect to the broker!");
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}
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void setup() {
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Serial.begin(9600);
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Ethernet.begin(mac);
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mqtt.onMessage(onMqttMessage);
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mqtt.onConnected(onMqttConnected);
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mqtt.onConnectionFailed(onMqttConnectionFailed);
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// If you use custom discovery prefix you can change it as following:
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// mqtt.setDiscoveryPrefix("customPrefix");
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// If you want to change prefix only for non-discovery prefix:
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// mqtt.setDataPrefix("data");
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mqtt.begin(BROKER_ADDR);
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}
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void loop() {
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Ethernet.maintain();
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mqtt.loop();
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}
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