#include "MAX6675.h"
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET 1
Adafruit_SSD1306 display(128, 64, &Wire, OLED_RESET);

const int dataPin   = 7;
const int clockPin  = 6;
const int selectPin = 5;


MAX6675 thermoCouple;

uint32_t start, stop;


void setup()
{
  Serial.begin(115200);
  Serial.println(__FILE__);
  Serial.println(MAX6675_LIB_VERSION);
  Serial.println();

  thermoCouple.begin(clockPin, selectPin, dataPin);
  // thermoCouple.begin(selectPin);  // HW SPI

  thermoCouple.setSPIspeed(4000000);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
}


void loop()
{
  delay(100);
  start = micros();
  int status = thermoCouple.read();
  stop = micros();
  float temp = thermoCouple.getTemperature();

  Serial.print(millis());
  Serial.print("\tstatus: ");
  Serial.print(status);
  Serial.print("\ttemp: ");
  Serial.print(temp);
  Serial.print("\tus: ");
  Serial.println(stop - start);

  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(35,10);
  display.print("TEMPERATURE");
   display.setTextSize(2);
  display.setCursor(35,35);
  display.print(temp);
  display.display();
  delay(1000);
}