#include <ThingSpeak.h>
#include <WiFi.h>
#include <DHTesp.h>
int trigger_pin = 14;
int echo = 27;
int led_pin = 5;
DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN = 17;
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber=2612288;
const char * myWriteAPIkey="RK4DS3G73R44DU6C";
int statusCode; 
  void setup() {
  Serial.begin(115200);
  pinMode(trigger_pin, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(led_pin,OUTPUT );
  WiFi.mode(WIFI_STA);
   ThingSpeak.begin(client);
    dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  }
  int rocket()
  {
    digitalWrite(trigger_pin, LOW);
    delay(10);
    digitalWrite(trigger_pin, HIGH);
    Serial.println("ok");
    delay(100);
    digitalWrite(trigger_pin, LOW);
    float rs = pulseIn(echo,LOW);
    return(rs*0.034/2)+1;
    delay(1000);
  }
void loop() 
{
  if(WiFi.status()!=WL_CONNECTED)
  {
    data=dhtSensor.getTempAndHumidity();
    if(WiFi.status()!=WL_CONNECTED)
    {
    Serial.println("Attempting to connect");
    while(WiFi.status()!=WL_CONNECTED)
    {
    WiFi.begin(ssid,pass);
    Serial.print(".");
    delay(5000);
  }
  Serial.println("\n connected");
}
int c =rocket();
if(c>200 && data.humidity<30 && data.temperature>70)
{
  digitalWrite(led_pin, HIGH);
}
else if(c<200 && data.humidity>30 && data.temperature<70)
{
  digitalWrite(led_pin, HIGH);
}
{

}
Serial.println(String(c));
  Serial.println("humi:"+ String(data.humidity,1));
  Serial.println("Temp:"+ String(data.temperature,2));
  Serial.println("..................");
  delay(1000);
  ThingSpeak.setField(2,data.humidity);
  ThingSpeak.setField(1,data.temperature);
  ThingSpeak.setField(3,c);
statusCode=ThingSpeak.writeFields(myChannelNumber,myWriteAPIkey);
if(statusCode == 200){
  Serial.println("channel updated success");
}
//
else
Serial.println("problem writing data http error code"+String(statusCode));
  }
  }