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


const int eco = 15;
const int tri = 2;
long dur;
float distance;

unsigned long myChannelNumber =  2133690;
const char*myWriteAPIKey = "UC5DAAISXHR2NSX0";
int statusCode;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;

void setup() {
  Serial.begin(115200);
  pinMode(tri, OUTPUT);
  pinMode(eco, INPUT);
  ThingSpeak.begin(client);
  WiFi.mode(WIFI_STA);

}

void loop() {
 if(WiFi.status() !=WL_CONNECTED)
  {
    Serial.print("Attempting to connect");
    while(WiFi.status() !=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      for(int i=0;i<5;i++)
      {
        Serial.print(".");
        delay(1000);
      }
    }
    Serial.println("\nConnected.");
  }
  digitalWrite(tri, LOW);
  delayMicroseconds(2);
  digitalWrite(tri, HIGH);
  delayMicroseconds(10);
  digitalWrite(tri, LOW);
  dur=pulseIn(eco,HIGH);
  distance=(dur*0.034/2)+1;
  Serial.println("distance : " + String(distance));
    if (distance < 200) 
  {
  
    Serial.println("Starting pump...");
  } else 
  {
  
  }
   ThingSpeak.setField(1,distance);
  statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
  if(statusCode ==200)
  Serial.println("Channel update successful.");
  else
  Serial.println("Problem Writing data. HTTP error code :" +String(statusCode));
  delay(10000);

}