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


#define trigger 26
#define echo 25
#define LOWLED   18
#define MIDLED   19
#define HIGHLED  21
#define MOTOR    27


unsigned int level = 0;
char ssid[] = "Wokwi-GUEST";
char pass[] = ""; 


WiFiClient client;
long myChannelNumber =  2695816 ;
const char * myWriteAPIKey = "0LSZ0KB6XS0OSTWE";
int statusCode;


void setup() {
  Serial.begin(115200);
  ThingSpeak.begin(client);
   if(WiFi.status() != WL_CONNECTED)  
  {
  Serial.print("Attempting to connect");
    while(WiFi.status() != WL_CONNECTED)
    {
    WiFi.begin(ssid, pass); 
    Serial.print(".");
    delay(5000);
    }
  }


  pinMode(LOWLED,OUTPUT);
  pinMode(MIDLED,OUTPUT);
  pinMode(HIGHLED,OUTPUT);
  pinMode(MOTOR,OUTPUT);
  digitalWrite(LOWLED,HIGH);
  digitalWrite(MIDLED,HIGH);
  digitalWrite(HIGHLED,HIGH);
  digitalWrite(MOTOR,LOW);

  Serial.begin(115200);
  pinMode(trigger, OUTPUT);
  pinMode(echo, INPUT);
}


  int Ultra_sonic(){
  digitalWrite(trigger, HIGH);
  delay(100);
  digitalWrite(trigger, LOW);
 float recieved= pulseIn(echo, HIGH);
 float converted=(recieved*0.034/2)+1;
 return(converted);

}

 


void loop() {

  int level= Ultra_sonic();
  Serial.println(level);
  delay(1000);

  // Start a new measurement:
  digitalWrite(trigger, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigger, LOW);

  // Read the result:
  int duration = pulseIn(echo, HIGH);
  Serial.print("level in CM: ");
  Serial.println(duration / 58);
  Serial.print("level in inches: ");
  Serial.println(duration / 148);
  
  level = duration / 58;

  if (level < 100)
  {

        digitalWrite(LOWLED,LOW);
        digitalWrite(MOTOR,HIGH);
        digitalWrite(HIGHLED,HIGH);
        digitalWrite(MIDLED,HIGH);
        Serial.println("The motor is ON");
        tone(27,5000);
  }
  else if ((level > 200) && (level <400))
  {
        digitalWrite(LOWLED,HIGH);
        digitalWrite(HIGHLED,HIGH);
        digitalWrite(MIDLED,LOW);
        noTone(27);

  }
  else if (level >= 400 )
  {
        digitalWrite(HIGHLED,LOW);
        digitalWrite(MIDLED,HIGH);
        digitalWrite(LOWLED,HIGH);
        digitalWrite(MOTOR,LOW);
        Serial.println("The motor is OFF");
        noTone(27);

  }
  ThingSpeak.setField(1, level );
    statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);

    if(statusCode == 200) { //successful writing code
Serial.println("Channel update successful.");
}
else {
Serial.println("Problem Writing data. HTTP error code :" +
String(statusCode));
}
  delay(1000);
}