WeatherStation/Software/WeatherSensor_D1mini/WeatherSensor_D1mini.ino

/*
 Basic ESP8266 MQTT example

 This sketch demonstrates the capabilities of the pubsub library in combination
 with the ESP8266 board/library.

 It connects to an MQTT server then:
  - publishes "hello world" to the topic "outTopic" every two seconds
  - subscribes to the topic "inTopic", printing out any messages
    it receives. NB - it assumes the received payloads are strings not binary
  - If the first character of the topic "inTopic" is an 1, switch ON the ESP Led,
    else switch it off

 It will reconnect to the server if the connection is lost using a blocking
 reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to
 achieve the same result without blocking the main loop.

 To install the ESP8266 board, (using Arduino 1.6.4+):
  - Add the following 3rd party board manager under "File -> Preferences -> Additional Boards Manager URLs":
       http://arduino.esp8266.com/stable/package_esp8266com_index.json
  - Open the "Tools -> Board -> Board Manager" and click install for the ESP8266"
  - Select your ESP8266 in "Tools -> Board"

*/

#include <ESP8266WiFi.h>
#include <PubSubClient.h>

// Update these with values suitable for your network.

const char *ssid = "AcS";
const char *password = "67993776724373201548";
const char* mqtt_server = "192.168.1.98";
const String mqtt_client = "home/S000";
const String mqtt_topic_t = mqtt_client + String("/temperatur");
const String mqtt_topic_h = mqtt_client + String("/humidity");
const String mqtt_topic_p = mqtt_client + String("/pressure");
const String mqtt_topic_l = mqtt_client + String("/lux");
const String mqtt_topic_led_state = mqtt_client + String("/led_state");
const String mqtt_topic_led = mqtt_client + String("/led");

WiFiClient espClient;
PubSubClient client(espClient);
long lastMsg = 0;
char msg[50];
int value = 0;
unsigned long t0;


#include <Wire.h>
#include <SPI.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>

#define BME_SCK 13
#define BME_MISO 12p
#define BME_MOSI 11
#define BME_CS 10

#define SEALEVELPRESSURE_HPA (1013.25)

Adafruit_BME280 bme; // I2C

#include <Adafruit_TSL2561_U.h>
Adafruit_TSL2561_Unified tsl = Adafruit_TSL2561_Unified(TSL2561_ADDR_FLOAT, 12345);

unsigned long delayTime;


void setup() {
  //pinMode(BUILTIN_LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
  //digitalWrite(BUILTIN_LED, HIGH);
  Serial.begin(115200);
  setup_wifi();
  setup_sensor();
  client.setServer(mqtt_server, 1883);
  //client.setCallback(callback);

  if (!client.connected()) {
    reconnect();
  }
  delay(500);
  client.loop();
  delay(500);
  process_sensor();
  delay(500);
  client.loop();
  delay(500);
  ESP.deepSleep(300e6);
}

 

void setup_wifi() {
  delay(10);
  // We start by connecting to a WiFi network
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}



void setup_sensor() {
    Serial.print(F("BME280 setup... "));

    bool status;
    // default settings
    // (you can also pass in a Wire library object like &Wire2)
    status = bme.begin();  
    if (!status) {
        while(1) {
          Serial.println("Could not find a valid BME280 sensor, check wiring!");
          //while (1);
          delay(2000);
        }
    }

    tsl.enableAutoRange(true); 
    tsl.setIntegrationTime(TSL2561_INTEGRATIONTIME_101MS);
    delayTime = 1000;
    Serial.println("done.");
}



void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();

  // Switch on the LED if an 1 was received as first character
  if ((char)payload[0] == '1') {
    digitalWrite(BUILTIN_LED, LOW);   // Turn the LED on (Note that LOW is the voltage level
    // but actually the LED is on; this is because
    // it is acive low on the ESP-01)
  } else {
    digitalWrite(BUILTIN_LED, HIGH);  // Turn the LED off by making the voltage HIGH
  }

}



void reconnect() {
  // Loop until we're reconnected
  const String start_topic = mqtt_client + String("/client");
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (client.connect(mqtt_client.c_str())) {
      Serial.println("connected");
      // Once connected, publish an announcement...
      client.publish(start_topic.c_str(), "hello world");
      // ... and resubscribe
      client.subscribe(mqtt_topic_led.c_str());
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}



void process_sensor() {
  unsigned long t1 = millis();
  Serial.print("ReadSensor: ");
  Serial.println(t1-t0);
  t0 = t1;
  auto temperatur = bme.readTemperature();
  auto humidity =  bme.readHumidity();
  auto pressure = bme.readPressure() / 100.0F;
  
  int led = !digitalRead(BUILTIN_LED);

  sensors_event_t event;
  tsl.getEvent(&event);
  float light = 0.0;
  if (event.light) {
    light = event.light;
  }
  
  snprintf(msg, 75, "T: %0.2f *C, P: %0.2f hPa, H: %0.2f, L: %0.0f LED: %d", 
                    temperatur, pressure, humidity, light, led);
  client.publish(mqtt_topic_t.c_str(), String(temperatur).c_str());
  client.publish(mqtt_topic_h.c_str(), String(humidity).c_str());
  client.publish(mqtt_topic_p.c_str(), String(pressure).c_str());
  client.publish(mqtt_topic_l.c_str(), String(light).c_str());
  client.publish(mqtt_topic_led_state.c_str(), String(led).c_str());
  Serial.println(msg);  
}



void loop() {
  delay(500);
}