#include <WiFi.h>
#include <ThingSpeak.h>
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
long myChannelNumber = 2643780;
const char * myWriteAPIKey = "UWRBOYI7D6B7LV6N";
int statusCode;
int trig=12;
int echo=14;
int distance;
void setup() {
Serial.begin(115200);
WiFi.mode(WIFI_STA);
pinMode(trig, OUTPUT);
pinMode(echo,INPUT);
pinMode(4, OUTPUT);
pinMode(16, OUTPUT);
pinMode(17, OUTPUT);
}

void loop()
{
  if(WiFi.status()!=WL_CONNECTED)
  {
    Serial.print ("Attempting to connect");
    while(WiFi.status()!=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.print(".");
      delay(5000);
    }
    Serial.println("\n connected");
     ThingSpeak.begin(client);
  }
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
   digitalWrite(trig,HIGH);
 Serial.println("vanakam da mapla");
  delay(1000); 
  digitalWrite(trig, LOW);
  distance = pulseIn(echo, HIGH);
  Serial.println("Thenila irundhu");
  float c = (distance*0.034/2);
  Serial.println(c);
  if (c>300)
  {
  digitalWrite(4, HIGH);
  digitalWrite(16, LOW);
  digitalWrite(17, LOW);
  }
  else if (c>200)
  {
    digitalWrite(16, HIGH);
    digitalWrite(4, LOW);
    digitalWrite(17, LOW);
  }
  else if (c<100)
  {
    digitalWrite(17, HIGH);
    digitalWrite(4, LOW);
    digitalWrite(16, LOW);
  }
}