init project

src/config.h.tmpl

@@ -0,0 +1,16 @@
+// Настройки WiFi
+#define WIFI_SSID "SSID_HERE"
+#define WIFI_PASS "PASS_HERE"
+
+// Сервер MQTT
+#define MQTT_SERVER "MQTT_SERVER_HERE"
+#define MQTT_PORT 5319
+#define MQTT_LOGIN "MQTT_LOGIN_HERE"
+#define MQTT_PASS "MQTT_PASS_HERE"
+
+#define DHTPIN D4     // pin gpio 2 in sensor
+#define DHTTYPE DHT22 // DHT 22 Change this if you have a DHT11
+
+#define CLIENT_ID "CLIENT_ID_HERE"
+#define HUMIDITY_TOPIC "sensor/humidity"
+#define TEMPERATURE_TOPIC "sensor/temperature"

src/main.cpp

@@ -0,0 +1,96 @@
+#include <Arduino.h>
+#include <DHT.h>
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+#include <config.h>
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+DHT dht(DHTPIN, DHTTYPE);
+
+void setup_wifi() {
+  delay(10);
+  // We start by connecting to a WiFi network
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.println(WIFI_SSID);
+
+  WiFi.begin(WIFI_SSID, WIFI_PASS);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+
+  Serial.println("");
+  Serial.println("WiFi connected");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+}
+
+void reconnect() {
+  // Loop until we're reconnected
+  while (!client.connected()) {
+    Serial.print("Attempting MQTT connection...");
+    // Attempt to connect
+    // If you do not want to use a username and password, change next line to
+    // if (client.connect("ESP8266Client")) {
+    if (client.connect("ESP8266Client", MQTT_LOGIN, MQTT_PASS)) {
+      Serial.println("connected");
+    } else {
+      Serial.print("failed, rc=");
+      Serial.print(client.state());
+      Serial.println(" try again in 5 seconds");
+      // Wait 5 seconds before retrying
+      delay(5000);
+    }
+  }
+}
+
+bool checkBound(float newValue, float prevValue, float maxDiff) {
+  return !isnan(newValue) &&
+         (newValue < prevValue - maxDiff || newValue > prevValue + maxDiff);
+}
+
+long lastMsg = 0;
+float temp = 0.0;
+float hum = 0.0;
+float diff = 1.0;
+
+void setup() {
+  Serial.begin(115200);
+  setup_wifi();
+  client.setServer(MQTT_SERVER, MQTT_PORT);
+
+  dht.begin();
+}
+
+void loop() {
+  if (!client.connected()) {
+    reconnect();
+  }
+  client.loop();
+
+  long now = millis();
+  if (now - lastMsg > 10000) {
+    lastMsg = now;
+
+    float newTemp = dht.readTemperature();
+    float newHum = dht.readHumidity();
+
+    if (checkBound(newTemp, temp, diff)) {
+      temp = newTemp;
+      Serial.print("New temperature:");
+      Serial.println(String(temp).c_str());
+      client.publish(TEMPERATURE_TOPIC, String(temp).c_str(), true);
+    }
+
+    if (checkBound(newHum, hum, diff)) {
+      hum = newHum;
+      Serial.print("New humidity:");
+      Serial.println(String(hum).c_str());
+      client.publish(HUMIDITY_TOPIC, String(hum).c_str(), true);
+    }
+  }
+}