#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
const int dataPin = 2;   /* DS */
const int clockPin = 3;  /* SHCP */
const int latchPin = 4;  /* STCP */
const int buttonPin = 5;  /* STCP */
const float BETA = 3950;


void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(latchPin, OUTPUT);
  lcd.begin(16, 2);
  lcd.print("Motor speed");
}

int pattern;
void loop() {
  int analogValue = analogRead(A0);
  float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  celsius += 25;
  celsius = 1.0/celsius;
  celsius *= 10;
  if(digitalRead(buttonPin)){
    moveMinus(1.0/celsius);
  }
  else{
    movePlus(1.0/celsius);
  }
  lcd.setCursor(0, 1);
  lcd.print(celsius);
}
void moveMinus(int delayMS){
  delay(delayMS);
  pattern = 0b00001101;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(delayMS);
  pattern = 0b00000101;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(delayMS);
  pattern = 0b00001110;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(delayMS);
  pattern = 0b00001010;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
}
void movePlus(int delayMS){
  delay(delayMS);
  pattern = 0b00000110;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(delayMS);
  pattern = 0b00000111;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(delayMS);
  pattern = 0b00001001;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(delayMS);
  pattern = 0b00001011;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
}