#include <WiFi.h>
#include<ThingSpeak.h>

char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;

unsigned long myChannelNumber=2603685;
const char* myWriteAPIKey="0JKIFCC4CF5ZQ5IS";
int statusCode;

void setup(){
  Serial.begin(115200);
  pinMode(13, OUTPUT);
  pinMode(14, INPUT);

  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  delay(1000);
}

void getwifi()
{
  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("/nConnected");
}

void loop(){
  getwifi();
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  float duration=pulseIn(14,HIGH);
  int distance=(duration*0.034)/2;
  Serial.println(distance);

  ThingSpeak.setField(1,distance);


statusCode=ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
  if(statusCode==200)
  {
    Serial.println("Chamnel update successful");
  }
  else
  {
    Serial.println("Problem Writing data: HTTp error code:"+String(statusCode));
  }
  delay(15000);
}