95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
#include <WiFi.h>
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#include <PubSubClient.h>
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#include <MqttLogger.h>
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#include "wifi_secrets.h"
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const char *ssid = WIFI_SSID;
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const char *password = WIFI_PASSWORD;
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const char *mqtt_server = "broker.hivemq.com";
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WiFiClient espClient;
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PubSubClient client(espClient);
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// default mode is MqttLoggerMode::MqttAndSerialFallback
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MqttLogger mqttLogger(client,"mqttlogger/log");
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// other available modes:
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// MqttLogger mqttLogger(client,"mqttlogger/log",MqttLoggerMode::MqttAndSerial);
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// MqttLogger mqttLogger(client,"mqttlogger/log",MqttLoggerMode::MqttOnly);
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// MqttLogger mqttLogger(client,"mqttlogger/log",MqttLoggerMode::SerialOnly);
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// connect to wifi network
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void wifiConnect()
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{
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mqttLogger.print("Connecting to WiFi: ");
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mqttLogger.println(ssid);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED)
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{
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delay(500);
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mqttLogger.print(".");
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}
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mqttLogger.print("WiFi connected: ");
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mqttLogger.println(WiFi.localIP());
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}
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// establish mqtt client connection
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void reconnect()
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{
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// Loop until we're reconnected
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while (!client.connected())
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{
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mqttLogger.print("Attempting MQTT connection...");
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// Attempt to connect
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if (client.connect("ESP32Logger"))
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{
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// as we have a connection here, this will be the first message published to the mqtt server
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mqttLogger.println("connected.");
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}
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else
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{
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mqttLogger.print("failed, rc=");
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mqttLogger.print(client.state());
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mqttLogger.println(" try again in 5 seconds");
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// Wait 5 seconds before retrying
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delay(5000);
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}
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}
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}
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// arduino setup
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void setup()
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{
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Serial.begin(115200);
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// MqttLogger uses mqtt when available and Serial as a fallback. Before any connection is established,
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// MqttLogger works just like Serial
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mqttLogger.println("Starting setup..");
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// connect to wifi
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wifiConnect();
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// mqtt client
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client.setServer(mqtt_server, 1883);
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//client.setCallback(mqttIncomingCallback);
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}
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void loop()
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{
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// here the mqtt connection is established
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if (!client.connected())
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{
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reconnect();
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}
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// with a connection, subsequent print() publish on the mqtt broker, but in a buffered fashion
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mqttLogger.print(millis()/1000);
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delay(1000);
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mqttLogger.print(" seconds");
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delay(1000);
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mqttLogger.print(" online");
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delay(1000);
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// this finally flushes the buffer and published on the mqtt broker
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mqttLogger.println();
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}
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