.

.gitignore

@@ -0,0 +1,2 @@
+
+ESP32_Temperture-Node/src/secrets.h

ESP32_Temperture-Node/src/main.cpp

@@ -1,11 +1,192 @@
+/*
+  Written for ESP32 development board DEVKIT v1 (Espressive ESP32-WROOM-32)
+    
+  Node sending temperature and atmosphere pressure readings via MQTT.
+  
+  by: Alexander Bobkov
+  Created: December 17, 2023
+  Updated:
+  
+*/
+
 #include <Arduino.h>
 
-// put function declarations here:
+struct {
-int myFunction(int, int);
+  float humidity = 0.0;
+  float pressure = 0.0;
+  float temperature = 0.0;
+} sensors_values;
+
+// BME280
+#ifdef BME280
+// WaveShare BME280
+Adafruit_BME280 bme;
+#define SEALEVELPRESSURE_HPA (1013.25)
+#endif
+// BMP280
+#ifdef BMP280
+#define BMP_SCK   (18)
+#define BMP_MISO  (19)
+#define BMP_MOSI  (23)
+#define BMP_CS    (5)
+Adafruit_BMP280 bmp(BMP_CS);
+#endif
+
+// Mosquitto
+#ifdef MQTT
+WiFiClient espClient;
+PubSubClient connection(espClient);
+Mosquitto mosquitto = Mosquitto();
+#endif
+#ifdef MQTT_SSL
+WiFiClientSecure espClientSSL = WiFiClientSecure();
+PubSubClient connection(espClientSSL); //mosquitto_ssl
+//Mosquitto mosquitto = Mosquitto();
+#endif
+
+void mosquito_callback (char* topic, byte* message, unsigned int length)
+{
+  //mosquitto.mosquito_callback(topic, message, length);
+
+  // Display topic and message received.
+  Serial.print("\nMessage arrived on topic: ");
+  Serial.println(topic);
+  Serial.print("Message: ");
+  String messageTemp;                               // variable to temporary store message received
+
+  // Convert message received in bytes into String
+  for (int i=0; i < length; i++) {
+    Serial.print((char)message[i]);
+    messageTemp += (char)message[i];
+  }
+  Serial.println();
+  Serial.println(messageTemp);
+
+  // Identify message received
+  if (strstr(topic, "esp32/sw1")) {
+    Serial.print("===== switch 1 ");
+    if (messageTemp == (String)"1") {
+      Serial.println("on =====");
+      digitalWrite(SWITCH_1, HIGH);
+    }
+    if (messageTemp == (String)"0") {
+      Serial.println("off =====");
+      digitalWrite(SWITCH_1, LOW);
+    }
+  }
+  if (strstr(topic, "esp32/sw2")) {
+    Serial.println("switch 2");
+    if (messageTemp == (String)"on") {
+      Serial.println("on =====");
+      digitalWrite(SWITCH_2, HIGH);
+    }
+    if (messageTemp == (String)"off") {
+      Serial.println("off =====");
+      digitalWrite(SWITCH_2, LOW);
+    }
+  }
+
+  if (strstr(topic, MQTT_IOT_CHANNEL_OUTPUT_SWITCH_1)) {
+  //if (strcmp((char *)topic, MQTT_IOT_CHANNEL_OUTPUT_SWITCH_1)) {
+    Serial.println(MQTT_IOT_CHANNEL_OUTPUT_SWITCH_1);
+    if (messageTemp == (String)"on") {
+    //if (strcmp(messageTemp, "on")) {
+      Serial.println("Switch 1 ON\n");
+      digitalWrite(12, HIGH);
+    }
+    if (messageTemp == (String)"off") {
+    //if (strcmp(messageTemp, "off")) {
+      Serial.println("Switch 1 OFF\n");
+      digitalWrite(12, LOW);
+    }
+  }
+  if (strstr(topic, MQTT_IOT_CHANNEL_OUTPUT_SWITCH_2)) {
+    Serial.println("switch 2");
+    if (messageTemp == (String)"on") {
+      Serial.println("on =====");
+      digitalWrite(12, HIGH);
+    }
+    if (messageTemp == (String)"off") {
+      Serial.println("off =====");
+      digitalWrite(12, LOW);
+    }
+  }
+  if (strstr(topic, MQTT_IOT_CHANNEL_OUTPUT_PWM_1)) {
+    Serial.println(MQTT_IOT_CHANNEL_OUTPUT_PWM_1);
+    if (messageTemp == (String)"on") {
+      Serial.println("on =====");
+      //digitalWrite(DAC_CH1, HIGH);
+      dacWrite(DAC1, 255);
+    }
+    /*else if (messageTemp == (String)"off") {
+      Serial.println("off =====");
+      //digitalWrite(DAC_CH1, LOW);
+      dacWrite(DAC1, 0);
+    }
+    else {
+      int pwm1 = (int)message;
+      Serial.print("PWM-1: ");
+      Serial.println(pwm1);
+      //digitalWrite(DAC_CH1, pwm1);
+      dacWrite(DAC1, 255);
+    }*/
+    else {
+      int pwm1 = messageTemp.toInt();
+      Serial.print("PWM-1: ");
+      Serial.println(pwm1);
+      dacWrite(DAC1, pwm1);
+    }
+  }
+}
+
+// Connect to Mosquito MQTT server.
+void mosquitto_connect ()
+{
+  /*
+  Statuses for connected():
+    0   => Connected
+    -2
+    -4
+  */
+  while (!connection.connected()) {
+    Serial.print("MQTT connection state: ");
+    Serial.println(connection.state());
+    Serial.print("Connecting to Mosquitto at IP: ");
+    Serial.print(mqtt_server);
+    #ifdef MQTT // MOSQUITTO MQTT port 1883
+    Serial.println(":1883");
+    connection.setServer(mqtt_server, 1883);
+    if(connection.connect("ESP32")) {
+      Serial.println("Mosquitto Connected!");
+      connection.setCallback(mosquito_callback);
+    }
+    Serial.print("Mosquitto state: ");
+    Serial.println(connection.state());
+    #endif
+    #ifdef MQTT_SSL // MOSQUITTO MQTT port 8883
+    Serial.println(":8883");
+    connection.setServer(mqtt_server, 8883);
+    espClientSSL.setCACert(NODE_CERT_CA);
+    espClientSSL.setCertificate(NODE_CERT_CRT);
+    espClientSSL.setPrivateKey(NODE_CERT_PRIVATE);
+    if(connection.connect("ESP32")) {
+      Serial.println("Mosquitto Connected!");
+      connection.setCallback(mosquito_callback);
+      connection.subscribe("esp32/sw1");
+      connection.subscribe("esp32/sw2");
+      connection.subscribe(MQTT_IOT_CHANNEL_OUTPUT_SWITCH_1);
+      connection.subscribe(MQTT_IOT_CHANNEL_OUTPUT_SWITCH_2);
+      connection.subscribe(MQTT_IOT_CHANNEL_OUTPUT_PWM_1);
+    }
+    Serial.print("Mosquitto state: ");
+    Serial.println(connection.state());
+    #endif
+    delay(2000);
+  }
+}
 
 void setup() {
-  // put your setup code here, to run once:
+  
-  int result = myFunction(2, 3);
 }
 
 void loop() {