//for Arduino bud toaster, battery powered. more comments to come!
#include "nokia_3310_lcd.h"
#include "avr_bmp.h"
#include<stdlib.h>
#include <PID_v1.h>

//Define PID Variables
double Setpoint, Input, Output;
//Specify the links and initial tuning parameters
PID myPID(&Input, &Output, &Setpoint,4,0.1,5, DIRECT);

#include <MAX6675.h>
int thermoDO = 4;
int thermoCS = 3;
int thermoCLK = 2;
MAX6675 thermocouple(thermoCLK, thermoCS, thermoDO);


Nokia_3310_lcd lcd=Nokia_3310_lcd();

char string1[]="0000";

void setup()
{
  Serial.begin(9600);
//initialise LCD
  lcd.LCD_3310_init();
  lcd.LCD_3310_clear();

  Input = thermocouple.readCelsius();
  Setpoint = 190;

  //turn the PID on
  myPID.SetMode(AUTOMATIC);
//write initial describers to the LCD
  lcd.LCD_3310_write_string(0, 0, " Cur    Set", MENU_NORMAL );
  lcd.LCD_3310_write_string(35, 4, "@C", MENU_NORMAL);

}

void loop()
{
//PID stuff:
  Input = thermocouple.readCelsius();
  myPID.Compute();
  int out = map(Output, 0, 255, 0, 100);
  analogWrite(5,out);

//write temp to the LCD
  dtostrf(Input,3,0,string1);
  lcd.LCD_3310_write_string_big(0, 1, string1, MENU_NORMAL);
  dtostrf(Setpoint,3,0,string1);
  lcd.LCD_3310_write_string_big(42, 1, string1, MENU_NORMAL);
  dtostrf(out,4,1,string1);
  lcd.LCD_3310_write_string(0, 4, string1, MENU_NORMAL);
  delay(200);

}