#include <HX711_ADC.h>
#include <EEPROM.h>
#include <LiquidCrystal_I2C.h>


LiquidCrystal_I2C lcd(0x27, 2, 16);
const int HX711_dout = 4; //mcu > HX711 dout pin
const int HX711_sck = 5; //mcu > HX711 sck pin
HX711_ADC LoadCell(HX711_dout, HX711_sck);
int tpin = 3;
const int calVal_eepromAdress = 0;
long t;
const int  Up_buttonPin   = 9;    // the pin that the pushbutton is attached to
const int  Down_buttonPin = 8;
float buttonPushCounter = 0;   // counter for the number of button presses
float up_buttonState = 0;         // current state of the up button
float up_lastButtonState = 0;     // previous state of the up button
float down_buttonState = 0;         // current state of the up button
float down_lastButtonState = 0;     // previous state of the up button
bool bPress = false;
int R1 = 10;
int R2 = 11;

void setup() {
  Serial.begin(57600);
  delay(10);
  Serial.println();
  Serial.println("Starting...");
  pinMode(tpin, INPUT_PULLUP);
  pinMode(6, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode( Up_buttonPin , INPUT_PULLUP);
  pinMode( Down_buttonPin , INPUT_PULLUP);
  pinMode(R1, OUTPUT);
  pinMode(R2, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(2, 0);
  lcd.print("CV DENITECH");
  lcd.setCursor(3, 1);
  lcd.print("MACHINERY");
  delay(3000);
  lcd.clear();
  LoadCell.begin(); // start connection to HX711
  LoadCell.start(1000); // load cells gets 1000ms of time to stabilize
  float calibrationValue; // calibration value (see example file "Calibration.ino")
  calibrationValue = 0.0; // uncomment this if you want to set the calibration value in the sketch
}
void loop() {
  static boolean newDataReady = 0;
  const int serialPrintInterval = 0; //increase value to slow down serial print activity
  // check for new data/start next conversion:
  if (LoadCell.update()) newDataReady = true;
  // get smoothed value from the dataset:
  if (newDataReady)
  {
    if (millis() > t + serialPrintInterval) {
      float i = LoadCell.getData();
      Serial.print("Load_cell output val: ");
      Serial.println(i);
      newDataReady = 0;
      t = millis();
      lcd.setCursor(0, 0);
      lcd.print("Tujuan :");
      lcd.setCursor(9, 0);
      lcd.print(buttonPushCounter);
      lcd.setCursor(14, 0);
      lcd.print("GM");
      lcd.setCursor(0, 1);
      lcd.print("Aktual :");
      lcd.setCursor(9, 1);
      lcd.print(i);
      lcd.setCursor(14, 1);
      lcd.print("GM");
    }
  }
  checkUp();
  checkDown();
  if (digitalRead(tpin) == LOW) {
    LoadCell.tareNoDelay();
  }
  // check if last tare operation is complete:
  if (LoadCell.getTareStatus() == true) {
    lcd.clear();
    lcd.print("Tare complete");
    delay(1000);
    lcd.clear();
  }
  float i = LoadCell.getData();
  float k = buttonPushCounter- i;
  
  if (i <= buttonPushCounter)
  {
    digitalWrite (6, HIGH);
    digitalWrite (10, LOW);
    digitalWrite (12, LOW);

  }
  if (i >= buttonPushCounter)
  {
    digitalWrite (6, LOW);
    digitalWrite (12, HIGH);
    digitalWrite (10, HIGH);
  }
  if (i <= buttonPushCounter *0.9)
  {
    digitalWrite (11, LOW);
  }
  if (i >= buttonPushCounter *0.9)
  {
    digitalWrite (11, HIGH);
  }

  else
  {
    digitalWrite(12, LOW);
  }
}
void checkUp()
{
  up_buttonState = digitalRead(Up_buttonPin);
  // compare the buttonState to its previous state
  if (up_buttonState!= up_lastButtonState)
  {
    // if the state has changed, increment the counter
    if (up_buttonState == LOW)
    {
      bPress = true;
      // if the current state is HIGH then the button went from off to on:
      buttonPushCounter = buttonPushCounter + 50;
    }
  }
  // save the current state as the last state, for next time through the loop
  up_lastButtonState = up_buttonState;
}
void checkDown()
{
  down_buttonState = digitalRead(Down_buttonPin);
  // compare the buttonState to its previous state
  if (down_buttonState != down_lastButtonState)
  {
    // if the state has changed, increment the counter
    if (down_buttonState == LOW)
    {
      bPress = true;
      buttonPushCounter = buttonPushCounter - 50;
    }
  }
  // save the current state as the last state, for next time through the loop
  down_lastButtonState = down_buttonState;
}