#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Keypad.h>
#include <Countimer.h>
Countimer timer;

int rpm = 0;
int time_left = 30; //this is in minutes
int rcf = 0;
int rcfmg = 0;
int time_set = 30;
char key = ' ';


LiquidCrystal_I2C lcd(0x27, 16, 4);

const int ROW_NUM = 4;
const int COLUMN_NUM = 4;

char keys[ROW_NUM][COLUMN_NUM] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

byte pin_rows[ROW_NUM] = {6, 7, 8, 12};
byte pin_column[COLUMN_NUM] = {2, 3, 4, 5};


Keypad keypad = Keypad(makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM);

void lcd_form1(){
 //lcd.clear();
 lcd.setCursor(0, 0);
 lcd.print("SPEED: ");
 lcd.print(rpm);
 lcd.print("%");
 lcd.setCursor(11, 0);
 lcd.print("TIME: ");
 time_left =timer.getCurrentSeconds();

 lcd.print(time_left);
 lcd.print("s ");

 lcd.setCursor(0,2);
 lcd.print("RCF:");
 lcd.print(rcf);
 lcd.print("g");


 lcd.setCursor(11,2);
 lcd.print("RCFmg:");
 lcd.print(rcfmg);
 lcd.print("mg");
 lcd.setCursor(11,2);

}

void onComplete(){
 lcd.setCursor(5,3);
 lcd.print("Timer DONE!!!");
 delay(100);
 lcd.clear();
 lcd.setCursor(5,3);
 lcd.print("Timer DONE!!!");
 delay(2000);
 lcd.clear();


}


void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd.print("Initializing");
  delay(1000);
   lcd.clear();
   timer.setCounter(0, 0, time_set, timer.COUNT_DOWN, onComplete); // sample timer
   timer.setInterval(refreshClock, 1000);

   timer.run();
}

void refreshClock() {
	Serial.print("Current count time is: ");
    Serial.println(timer.getCurrentTime());
}

void keypad_func(){

switch(key){
  case 'A':
  // start
    timer.start();
    Serial.println("timer has started");
    break;
  case 'B':
    //stop
    timer.stop();
    Serial.println("timer has been stopped");
     break;
  default:
    // statements
    break;


}

}

void loop() {

 
  key = keypad.getKey();
  timer.run();

  if (key != NO_KEY){
  lcd.setCursor(0, 3); //just to monitor the lates pressed keypad
  lcd.print(key);
  keypad_func();
  }

  lcd_form1();

}