#include <WiFi.h>
#include <ThingSpeak.h>
#include <HX711.h>


#define DATA_PIN  15
#define CLOCK_PIN 2
HX711 hx711;
long units;
int buzzer = 13;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber = 2264307;
const char * myWriteAPIKey = "GWFIIUVV3XFK724R";
int statusCode;
void setup() {
  Serial.begin(115200);
WiFi.mode(WIFI_STA);
ThingSpeak.begin(client);
   hx711.begin(DATA_PIN, CLOCK_PIN);
  hx711.set_scale(420.0983);
  hx711.tare();
  pinMode(buzzer, OUTPUT);
  
}
int n=0;
int i;
void loop() {
  units = hx711.get_units(); 
 int  v=map(units,0,50,0,3500);

  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.");
  }
// Serial.println(units);
  if(v>2500){
   i=-1;
   //Serial.println(units);
    tone(buzzer, 1000);
     n=1;
    //delay(1000);
  }

  else if(v<500)
  {
   i=0;
    
     noTone(buzzer); 
     n=2;
  }
  else {
    i=v;
   //ThingSpeak.setField(1,units);
     noTone(buzzer); 
     n=2;
  }
   Serial.println(i);
   ThingSpeak.setField(1,i);
  if(n==1){
    ThingSpeak.setField(2, 000);
}

   //ThingSpeak.setField(1,units);

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(15000);
}