#include <WiFi.h>
char  ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
#include <ThingSpeak.h>
unsigned long myChannelNumber= 2633637;
const char * myWriteAPIKey="K89ILA641O1A4P5C";
int statusCode;
int Trig = 27;
int Echo = 12;
int distance;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
   WiFi.mode(WIFI_STA);
   ThingSpeak.begin(client);
  pinMode(Trig, OUTPUT);
  pinMode(Echo, INPUT);
}
void loop() {

  if (WiFi.status()!=WL_CONNECTED)
  {
    Serial.print("Attempting to connect");
    while(WiFi.status ()!=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.print(".");
      delay(3000);
    }
    Serial.println("\n connected");

  }
   digitalWrite(Trig, HIGH);
  delay(100);
  digitalWrite(Trig, LOW);
  int reading = (pulseIn(Echo,HIGH));
  distance = (reading * 0.034/2)+1;
   Serial.println("Ok, received");
  Serial.println(distance);
  ThingSpeak.setField(1,distance);
    statusCode=ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
 if(statusCode == 200)
    {
    Serial.println("channel updated success");
  }
  else{
    Serial.println("Problem writing data http error code :"+
    String(statusCode));

 delay(1000);
}
}