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


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

WiFiClient client;
unsigned long myChannelNumber = 2078964;
const char * myWriteAPIKey = "S3I1YJDBGNWHO7E7";
int statusCode;

#define DATA_PIN  4
#define CLOCK_PIN 2
HX711 hx711;
long units;


int stepPin=12;
int DIRPin=13;
int stepPin1=5;
int DIRPin1=18;
int stepPin2=19;
int DIRPin2=21;
int steps = 820;
Stepper myStepper(steps, stepPin, DIRPin);
Stepper myStepper1(steps, stepPin1, DIRPin1);
Stepper myStepper2(steps, stepPin2, DIRPin2);

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(stepPin, OUTPUT);
  pinMode(DIRPin, OUTPUT);
  pinMode(stepPin1, OUTPUT);
  pinMode(DIRPin1, OUTPUT);
  pinMode(stepPin2, OUTPUT);
  pinMode(DIRPin2, OUTPUT);
  myStepper.setSpeed(20);
  myStepper1.setSpeed(20);
  myStepper2.setSpeed(20);
  
}

void loop() 
{
  connectToCloud();
  MotorData();      
}

void connectToCloud()
{
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.");
}
}

void MotorData()
{
  a:
  units = hx711.get_units(); 
  Serial.println(units);
  if(units > 0)
  {
      myStepper.step(steps);     
      if(units < 25)
      {    
        myStepper1.step(steps); 
        StoreData(units,1,1,0);
        //delay(1000);
        goto a;
      }
      else
      {
        myStepper2.step(steps); 
        StoreData(units,1,0,1);
        //delay(1000);
        goto a;
      }
  }
}

void StoreData(int weight, int lift,int right,int left)
{
    ThingSpeak.setField(4,weight);
    ThingSpeak.setField(5,lift);
    ThingSpeak.setField(6,right);
     ThingSpeak.setField(7,left);
    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(10000);
}