#include <SPI.h>
#include <TFT.h>

#define cs 10
#define dc 9
#define rst 8
#define sd_cs 7

TFT TFTscreen=TFT(cs, dc, rst);

float temp;
float oldTemp=0;
#define pinTemp 1
char sensorPrintout[5];

#define Y 75 // alteza barra temperatura


void setup() {
  pinMode(A1,INPUT);
  TFTscreen.begin();
  TFTscreen.background(0,0,0);
  TFTscreen.stroke(0,0,255);
  TFTscreen.setTextSize(2);
  TFTscreen.text("temperatura", 15, 0); // verificare posizione
  TFTscreen.text("ambiente", 30, 20);
  for(int i=10;i<110;i++){
    linea(i,Y);
    delay(20);
  }
  Serial.begin(9600);
}

void loop() {
  delay(2000);
  temp=(analogRead(pinTemp)-155)*330/1023;
  Serial.print(temp);
  Serial.print("     ");

  temperature(temp);
  cursoreTemp(temp,oldTemp);
  oldTemp=temp;
}


void temperature(float t) {
  //cancello vecchia temperatura
  TFTscreen.stroke(0,0,0);
  TFTscreen.setTextSize(3);
  TFTscreen.text(sensorPrintout,40,40);

  int deg=int(t); //temperature in celsius
  Serial.println(deg);
  //scrivo temperatura
  String temp = String(deg);
  temp.toCharArray(sensorPrintout,4);


  TFTscreen.stroke(220,135,245);
  TFTscreen.setTextSize(3);
  TFTscreen.text(sensorPrintout,40,40);


}

void cursoreTemp (float t, float oT){
  linea(map(oT,20,30,10,110)-1,Y);
  linea(map(oT,20,30,10,110),Y);
  linea(map(oT,20,30,10,110)+1,Y);
  TFTscreen.stroke(0,0,0);
  for(int i=10;i<110;i++){
    TFTscreen.line(i,Y-11,i,Y);
    TFTscreen.line(i,Y+30,i,Y+41);
  }
  TFTscreen.stroke(255,255,255);
  TFTscreen.line(map(t,20,30,10,110),Y-11,map(t,20,30,10,110),Y+41);
  TFTscreen.line(map(t,20,30,10,110)-1,Y-11,map(t,20,30,10,110)-1,Y+41);
  TFTscreen.line(map(t,20,30,10,110)+1,Y-11,map(t,20,30,10,110)+1,Y+41);
}

void linea(int x, int y){
  if(x<60){
    TFTscreen.stroke(0,map(x,10,59,0,255),map(x,10,59,255,0));
  }
  if(x>=60){
    TFTscreen.stroke(map(x,60,110,0,255),map(x,60,110,255,0),0);
  }
  TFTscreen.line(x,y,x,y+30);
}