/* 
Mini weather station using AtTiny85 
*/

#include <TinyDHT.h> 
#include <TinyWireM.h>
#include <Tiny4kOLED.h>

#define DHTPIN PB1
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

const unsigned char  img_thermometer[] PROGMEM = {
  0x00, 0xfe, 0x03, 0xfe, 0x50,
  0x00, 0xff, 0x00, 0xff, 0x55,
  0x60, 0x9f, 0x80, 0x9f, 0x65,
};


void splash() {
  oled.clear();
  oled.setCursor(50, 0);
  oled.print(F("Mini"));

  oled.setCursor(5, 2);
  oled.print(F("Weather Station"));

  oled.setCursor(20, 4);
  oled.print(F("IoT Projects"));

  oled.setCursor(50, 6);
  oled.print(F("Ideas"));
}

void prepareDisplay() {
  unsigned int i, k;
  unsigned char ch[5];

  oled.clear();
  oled.begin();

  oled.setCursor(15, 0);
  oled.print(F("ATtiny85 Mini"));
  oled.setCursor(1, 2);
  oled.print(F("Weather Station"));

  oled.bitmap(2, 5, 7, 8, img_thermometer);
  oled.setCursor(15, 4);
  oled.print(F("Temp: 32.0 °C"));
  oled.setCursor(15, 6);
  oled.print(F("Humi: 67.0 %"));
}


void setup() {
   //if (F_CPU == 16000000) clock_prescale_set(clock_div_1); // 5V Trinket: run at 16 MHz
  dht.begin();  // Initialize DHT Teperature Sensor

  oled.begin(128, 64, sizeof(tiny4koled_init_128x64br), tiny4koled_init_128x64br);

  // Two fonts are supplied with this library, FONT8X16 and FONT6X8
  oled.setFont(FONT8X16);

  // To clear all the memory
  oled.clear();
  oled.on();

  splash();

  delay(3000);
  prepareDisplay();
}

void loop() {
  static long startTime = 0;
  long currentTime;

  // Get current time
  currentTime = millis();

  // Checks 1 second passed
//  if ((currentTime - startTime) > 3000) {
    startTime = currentTime;


    // Update temperature
    int16_t temperature =  dht.readTemperature();

    // Set cursor
    oled.setCursor(15, 4);
    oled.print("Temp: ");
    // Print to display
    oled.print(temperature, 1);
    oled.print(" °C  ");

    // Update humidity
   uint8_t humidity = dht.readHumidity();

    // Set cursor
    oled.setCursor(15, 6);
    oled.print("Humi: ");
    // Print to display
    oled.print(humidity, 1);
    oled.print(" %  ");

    oled.bitmap(2, 5, 7, 8, img_thermometer);
 // }
}