OPEN ==> Arduino Code for MultiSensor
/*
*/
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>
#include <PubSubClient.h>
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_TSL2561_U.h>
#include <DHTesp.h>
// Constants
const char *wifi_ssid = “Enter SSID”;
const char *wifi_pwd = “Enter PWD”;
const char wifi_hostname = “MultiSensor”;
const char mqtt_server = “Enter IP adress”; //MQTT Server IP, your home MQTT server eg Mosquitto on RPi, or some public MQTT
const int mqtt_port = 1883; //MQTT Server PORT, default is 1883 but can be anything.
const char *mqtt_user = “Enter USER”; //User name in the Homey Broker app
const char *mqtt_pwd = “Enter PWD”; //Password in the Homey Broker app
String clientId = "MultiSensor : " + String(ESP.getChipId(), HEX);
const char *ota_hostname = “MultiSensor”;
// MQTT Constants
const char* mqtt_LuminanceStatus_set_topic = “MultiSensor/Luminance”;
const char* mqtt_TemperatureStatus_set_topic = “MultiSensor/Temperature”;
const char* mqtt_HumidityStatus_set_topic = “MultiSensor/Humidity”;
// Global
int currentLuminance;
int previousLuminance = 0;
float currentHumidity;
float previousHumidity = 0;
float currentTemperature;
float previousTemperature = 0;
unsigned long previousMillis = 0;
const unsigned long reportInterval = 600000; // Time in milliseconds between reports to MQTT broker (600000ms = 10min)
int thresholdLuminance = 100; // Treshold level in luminance (Lux) to send report to MQTT broker (current-previous > treshold)
float thresholdHumidity = 1; // Treshold level in humidity (H) to send report to MQTT broker
float thresholdTemperature = 0.5; // Treshold level in celsius (*C) to send report to MQTT broker
WiFiClient espClient;
PubSubClient client(espClient);
DHTesp dht;
Adafruit_TSL2561_Unified tsl = Adafruit_TSL2561_Unified(TSL2561_ADDR_FLOAT, 12345);
//
/* Setup WiFi connection */
//
void setup_wifi() {
WiFi.hostname(wifi_hostname);
WiFi.setSleepMode(WIFI_NONE_SLEEP);
WiFi.mode(WIFI_STA);
WiFi.begin(wifi_ssid, wifi_pwd);
while (WiFi.status() != WL_CONNECTED) delay(500);
Serial.print("WiFi connected: ");
Serial.println(WiFi.localIP());
}
//
/* Setup OTA connection */
//
void setup_ota() {
// Set OTA Password, and change it in platformio.ini
ArduinoOTA.setHostname(ota_hostname);
//ArduinoOTA.setPassword(“ESP8266_PASSWORD”);
ArduinoOTA.onStart( {});
ArduinoOTA.onEnd( {});
ArduinoOTA.onProgress((unsigned int progress, unsigned int total) {});
ArduinoOTA.onError((ota_error_t error) {
if (error == OTA_AUTH_ERROR); // Auth failed
else if (error == OTA_BEGIN_ERROR); // Begin failed
else if (error == OTA_CONNECT_ERROR); // Connect failed
else if (error == OTA_RECEIVE_ERROR); // Receive failed
else if (error == OTA_END_ERROR); // End failed
});
ArduinoOTA.begin();
}
//
/* Setup MQTT connection */
//
void reconnect() {
// Loop until we’re reconnected
// Attempt to connect
if (!client.connected()) {
client.setServer(mqtt_server, mqtt_port);
Serial.print("Connecting to MQTT server "); Serial.print(mqtt_server);
while (!client.connected()) {
if (client.connect(clientId.c_str(), mqtt_user, mqtt_pwd ))
{
Serial.println("\tconnected");
} else {
delay(500);
Serial.print(".");
}
}
}
}
//
/* Publish Luminance to MQTT broker */
//
void publishLuminance(){
client.publish(mqtt_LuminanceStatus_set_topic, String(currentLuminance).c_str(), true);
}
//
/* Publish Temperature to MQTT broker */
//
void publishTemperature(){
client.publish(mqtt_TemperatureStatus_set_topic, String(currentTemperature).c_str(), true);
}
//
/* Publish Humidity staus to MQTT broker */
//
void publishHumidity(){
client.publish(mqtt_HumidityStatus_set_topic, String(currentHumidity).c_str(), true);
}
//
/* Initialise the Light Sensor TSL2561 Light Sensor */
//
void initiateLightSensor(){
if(!tsl.begin())
{
/* There was a problem detecting the TSL2561 … check your connections */
Serial.print(“Ooops, no TSL2561 detected … Check your wiring or I2C ADDR!”);
while(1);
}
}
//
/* Configures the gain and integration time for the TSL2561 Light Sensor */
//
void configureLuminanceSensor(void)
{
/* You can also manually set the gain or enable auto-gain support */
tsl.setGain(TSL2561_GAIN_1X); // No gain … use in bright light to avoid sensor saturation
// tsl.setGain(TSL2561_GAIN_16X); // 16x gain … use in low light to boost sensitivity
// tsl.enableAutoRange(true); // Auto-gain … switches automatically between 1x and 16x
/* Changing the integration time gives you better sensor resolution (402ms = 16-bit data) */
// tsl.setIntegrationTime(TSL2561_INTEGRATIONTIME_13MS); // fast but low resolution
tsl.setIntegrationTime(TSL2561_INTEGRATIONTIME_101MS); // medium resolution and speed
// tsl.setIntegrationTime(TSL2561_INTEGRATIONTIME_402MS); // 16-bit data but slowest conversions
}
//
/* Get a new temperature sensor event */
//
void Temperature() {
currentTemperature = dht.getTemperature();
//Serial.print(currentTemperature); Serial.print(" *C, ");
}
//
/* Get a new humidity sensor event */
//
void Humidity(){
currentHumidity = dht.getHumidity();
//Serial.print(currentHumidity); Serial.print(" H, ");
}
//
/* Get a new luminance sensor event */
//
void Luminance(){
sensors_event_t event;
tsl.getEvent(&event);
// Filter out values larger than 65000, because 65353 value means saturned sensor, bad measurement…
// this may happen in direct sunlight to the sensor
if (event.light < 65000) { currentLuminance = event.light; }
//Serial.print(currentLuminance); Serial.println(" lux");
}
//
/* Arduino setup function (automatically called at startup) */
//
void setup(void)
{
Serial.begin(115200);
setup_wifi();
setup_ota();
initiateLightSensor(); // initiate the light sensor
configureLuminanceSensor(); // Setup the light sensor gain and integration time
dht.setup(D5, DHTesp::DHT22); // Setup the DHT22 sensor to pin D5
}
void loop(void)
{
if (!client.connected()) { reconnect(); }
client.loop();
ArduinoOTA.handle();
// Get fresh sensor values
Temperature();
Humidity();
Luminance();
// Report status to MQTT broker every reportInterval
unsigned long currentMillis = millis();
if(currentMillis - previousMillis > reportInterval) {
previousMillis = currentMillis;
publishLuminance();
publishTemperature();
publishHumidity();
/*Serial.print(currentTemperature); Serial.print(" *C, ");
Serial.print(currentHumidity); Serial.print(" H, ");
Serial.print(currentLuminance); Serial.println(" lux");*/
}
