G meteo Weather station code

1. * Weatherstationexample ver0.01
* Sensors: BMP280, DHT22, DS18B20, RainSensor
* Createdat Oct/10/2019
*/
//----------------------------------------- NetworkSettings
#include <WiFi.h> //enable forESP32
const char* ssid = "COSMOTE-CCAEA2";
const char* password= "SThEu3vupnSXUK2c";
//----------------------------------------- ThingSpeaksettings
#include <ThingSpeak.h>
char* thingSpeakAPI="api.thingspeak.com";
intchannelID=720326;
char* writeAPIKey="N974OJRG8BL9MQ2E";
WiFiClientthingspeakClient;
//----------------------------------------- DHTsettings
#include <DHT.h>
#include <ThingSpeak.h>
#define DHTPIN 4 // Pin4
#define DHTTYPEDHT22
DHT dht(DHTPIN,DHTTYPE);
//----------------------------------------- BMP280 settings
#include "Seeed_BMP280.h"
#include <Wire.h>
BMP280 bmp280;
//----------------------------------------- DS18B20 settings
#define DS18B20_PIN 17
#include <OneWire.h>
#include <DallasTemperature.h>
OneWire oneWire(DS18B20_PIN);
DallasTemperaturesensors(&oneWire);
//----------------------------------------- Rainsensorsettings
#define rainSensor_digitalPin16
#define rainSensor_analogPinA0
#define ANALOG_PIN_239 // podari 39
intanalog_value2= 0;
//----------------------------------------- WatchDog
//##############################################
#define KEEP_ALIVE_PIN 5 // OUT Παλμός1 δευτερολέπτου - ToArduinoNANOελέγχειαν
υπάρχειο παλμός eimai zontanos1sec palmos
unsignedintfailedUploads=0;
double noValue=0.00123456;
unsignedlonglastUploadedTime=0;
//================================================== setup
voidsetup() {
Serial.begin(9600);
//-- WiFi connectioncode
Serial.println("nnConnectingtoWiFi.");

2. WiFi.begin(ssid,password);
while (WiFi.status() !=WL_CONNECTED) {
WiFi.begin( ssid,password);
delay(2500);
Serial.print(".");
}
Serial.println( " connected!");
//-- sensorssetupcode
Wire.begin();
dht.begin();
sensors.begin();
if(!bmp280.init()){
Serial.println("Device error!");
}
pinMode(rainSensor_digitalPin,INPUT);
ThingSpeak.begin(thingspeakClient);
initWatchDog(); //##############################################
}
//================================================== setup
voidloop() {
delay(5000);
floatpressure;//ORIZOTHN METABLITI POY THA GRAPSOTHN ATMOSFARIKIPIESH
//getandprint atmosphericpressuredata
Serial.print("Pressure:");
Serial.print(pressure =bmp280.getPressure());
Serial.println("Pa");
//getand printaltitude data
Serial.print("Altitude:");
Serial.print(bmp280.calcAltitude(pressure));
Serial.println("m");
delay(1000);
Serial.println("n");//addaline betweenoutputof differenttimes.
delay(1000);
//---- DHT22 temperature &humidity
floathumidity_dht=dht.readHumidity(); //Sensorreadingsmayalsobe up to 2 seconds'old'(itsa
veryslowsensor)
if (isnan(humidity_dht)) {
Serial.println("FailedtoreadfromDHT sensor!");
humidity_dht=noValue;
}
else {
Serial.print("Humidityof DHT= ");

3. Serial.print(humidity_dht);
Serial.println( "%");
}
//---- DS18B20 temperature
floattemperature_DS18B20=get_DS18B20_temperature();
if (temperature_DS18B20==noValue) Serial.print("DS18B20value error");
else {
Serial.print("Temperature of DS18B20 = ");
Serial.print(temperature_DS18B20,1);// printwith1 decimal places
Serial.println( "°C");
}
//---- Rainsensor(analogvalue1) , analogvalue 2
analog_value2=analogRead(ANALOG_PIN_2);
intrainSensorAnalogValue=analogRead(rainSensor_analogPin);
intrainSensorDigitalValue=digitalRead(rainSensor_digitalPin);
Serial.println("Rainsensoranalogvalue ="+String(rainSensorAnalogValue));
Serial.println("Rainsensordigital value ="+String(rainSensorDigitalValue));
Serial.println("ANALOGVALUE2"+String(analog_value2));//ANALOGVALUE2 pin39
//---- Thingspeak
if (millis()-lastUploadedTime>15000) {
Serial.print("n============= UploadingtoThingSpeak...");
if (pressure!=noValue)ThingSpeak.setField( 1,pressure);
if ( analog_value2!=noValue) ThingSpeak.setField( 2,analog_value2);
if (bmp280.calcAltitude(pressure)!=noValue)ThingSpeak.setField(4,
bmp280.calcAltitude(pressure));
if (humidity_dht!=noValue) ThingSpeak.setField( 5,humidity_dht);
if (temperature_DS18B20!=noValue) ThingSpeak.setField( 7,temperature_DS18B20);
if (rainSensorAnalogValue!=noValue)ThingSpeak.setField( 8,rainSensorAnalogValue);
intwriteSuccess=ThingSpeak.writeFields( channelID,writeAPIKey);
if (writeSuccess==200) {
Serial.println(" Success!");
failedUploads=0; //##############################################
}
else {
Serial.println(" Failure!");
failedUploads++; //##############################################
}
lastUploadedTime=millis();
}
watchDogFeed_from_loop(); //##############################################
//--- checkdisconnectedtime //##############################################
if (failedUploads>10){
Serial.println("ESPisrestarting...");
ESP.restart();
}

4. }
//======================================================= get_DS18B20_temperature
floatlastTemperature=-500;
double calibration_DS18B20= 1;
floatget_DS18B20_temperature() {
booleanisError=false;
sensors.requestTemperatures();//Sendthe commandtoget temperatures
portDISABLE_INTERRUPTS();
floattemperature =sensors.getTempCByIndex(0);
portENABLE_INTERRUPTS();
if ((temperature<-20) ||(temperature>60)) isError=true;
if (!isError) if (abs(temperature-lastTemperature)>5) isError=true;
Serial.println("Temperature withoutcalibrationis:"+ String(temperature));
if (isError) {
lastTemperature=temperature;
returnnoValue;
}
else {
// Serial.println("Calibration="+String(calibration));
temperature=temperature*calibration_DS18B20;
temperature =round(temperature *10.0) / 10.0;
lastTemperature=temperature;
Serial.println("Temperature is:"+ String(temperature));
returntemperature;
}
}
//============== Software Watchdog=======================
//========================================================
//========================================================
volatile byte pulseStatus=0;
volatile intloopHealthyCouner=0;
#include <Ticker.h>
TickersecondTick;
volatile intwatchdogCount=0;
voidISRwatchdog(){
if (pulseStatus==0) {
pulseStatus=1;
digitalWrite(KEEP_ALIVE_PIN,HIGH);
}
else {
digitalWrite(KEEP_ALIVE_PIN,LOW);
pulseStatus=0;
}
//--- loopwatchdog

5. loopHealthyCouner++;
//if (debug) Serial.println("nWatchdogisalive="+String(loopHealthyCouner));
if (loopHealthyCouner>10) {
//if (debug) Serial.println("ndisconnected_minutes="+String(disconnected_minutes));
// if (debug) Serial.println("nWatchdogRESTART");
ESP.restart();
}
}
voidinitWatchDog(){
secondTick.attach(1,ISRwatchdog);
}
voidwatchDogFeed_from_loop(){
loopHealthyCouner=0;
}