Potat0ast  

#include "SSD1306Wire.h"
#include <WiFi.h>
#include <NTPClient.h>
#include <TimeLib.h>
#include "pitches.h" // see pitches.h file below. It is another file in the same project


// set wifi variables
const char* ssid     = "SSID";
const char* password = "PASSWORD";

// set the display
SSD1306Wire display(0x3c, SDA, SCL); 

// Define NTP client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);

// Variables to save date and time
String formattedDate;
String dayStamp;
String timeStamp;

// connect to WiFi function
void connectToWiFi() {
  Serial.print("Connecting to WiFi");
  // set wifi to station mode (client mode)
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  int attempt = 0;
  // while loop that adds a dot for each second that the status is not connected yet
  while(WiFi.status() != WL_CONNECTED){
    Serial.print("."); // print a dot to serial
    display.drawString(attempt, 0, "."); // draw a dot next to the last one.
    display.display(); // refresh the display so what was drawn actually shows
    attempt++; // increase the attempt counter (acts as x axis for dots being printed)
    delay(1000);
  }
}

// utility function for digital clock display: prints leading 0
String twoDigits(int digits){
  if(digits < 10) {
    String i = '0'+String(digits);
    return i;
  }
  else {
    return String(digits);
  }
}


// plays a tone from a particular pin for a set amount of time
void tone(byte pin, int freq, int length) {
  ledcSetup(0, 2000, 8); // setup beeper
  ledcAttachPin(pin, 0); // attach beeper
  ledcWriteTone(0, freq); // play tone

  delay(length); // play for as long as specified
  ledcWriteTone(0, 0); // then turn off
}

void playMelody() {
  // notes in the melody:
  int melody[] = {
    NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
  };

  // note durations: 4 = quarter note, 8 = eighth note, etc.:
  int noteDurations[] = {
    4, 8, 8, 4, 4, 4, 4, 4
  };
  // loop to play the melody specified
  for (int thisNote = 0; thisNote < sizeof(melody)/sizeof(melody[0]); thisNote++) {
    tone(14, melody[thisNote], 1000/noteDurations[thisNote]);
  }
}

void setup() {
  // set the baud rate and print newlines to serial
  Serial.begin(9600);
  Serial.println();
  Serial.println();
  
  // initialize the display and set font
  display.init();
  display.flipScreenVertically();
  display.setFont(ArialMT_Plain_10);
  
  connectToWiFi();

  // set pin 14 for output
  pinMode(14, OUTPUT);
    
  playMelody();

  display.drawString(0, 0, "hello");
  display.display();
  delay(3000);

  display.clear();

  // show the mac address in serial and on the screen
  Serial.print("ESP Board MAC Address:  ");
  Serial.println(WiFi.macAddress());
  display.drawString(0, 10, "ESP Board MAC Address: ");
  display.drawString(0, 20, WiFi.macAddress());
  display.display();

  // show the IP address on screen
  display.drawString(0, 40, "ESP Board IP Address: ");
  display.drawString(0, 50, WiFi.localIP().toString());
  display.display();

  // start the time client and set timezone GMT -8
  timeClient.begin();
  timeClient.setTimeOffset(-25200); delay(5000);

  // get the datetime
  while(!timeClient.update()) {
    timeClient.forceUpdate();
  }

  // Extract Date and Time
  formattedDate = timeClient.getFormattedTime();
  int epochTime = timeClient.getEpochTime();
  setTime(epochTime);
  Serial.println(formattedDate);

  // Extract date
  int splitT = formattedDate.indexOf("T");
  dayStamp = formattedDate.substring(0,splitT);

  display.drawString(0, 0, "TIME: " + dayStamp);
  display.display();

  // save some power
  WiFi.mode(WIFI_OFF);

}

void loop() {
  // clear the screen and update the time  
  display.clear();
  display.setFont(ArialMT_Plain_16);
  display.drawString(0,0, String(hour()) + ":" + twoDigits(minute()) + ":" + twoDigits(second()));
  display.display();

  // The alarm. This is for 6:25 am. 1430 for 2:30 pm
  if (String(hour()) + String(minute()) == "625") {
    playMelody();
  }
  // update the time every so often. In milliseconds
  delay(1000);

}

// contains note definitions so you don't need to know specific frequencies. Just a bit of music theory
#define NOTE_B0  31
#define NOTE_C1  33
#define NOTE_CS1 35
#define NOTE_D1  37
#define NOTE_DS1 39
#define NOTE_E1  41
#define NOTE_F1  44
#define NOTE_FS1 46
#define NOTE_G1  49
#define NOTE_GS1 52
#define NOTE_A1  55
#define NOTE_AS1 58
#define NOTE_B1  62
#define NOTE_C2  65
#define NOTE_CS2 69
#define NOTE_D2  73
#define NOTE_DS2 78
#define NOTE_E2  82
#define NOTE_F2  87
#define NOTE_FS2 93
#define NOTE_G2  98
#define NOTE_GS2 104
#define NOTE_A2  110
#define NOTE_AS2 117
#define NOTE_B2  123
#define NOTE_C3  131
#define NOTE_CS3 139
#define NOTE_D3  147
#define NOTE_DS3 156
#define NOTE_E3  165
#define NOTE_F3  175
#define NOTE_FS3 185
#define NOTE_G3  196
#define NOTE_GS3 208
#define NOTE_A3  220
#define NOTE_AS3 233
#define NOTE_B3  247
#define NOTE_C4  262
#define NOTE_CS4 277
#define NOTE_D4  294
#define NOTE_DS4 311
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_FS4 370
#define NOTE_G4  392
#define NOTE_GS4 415
#define NOTE_A4  440
#define NOTE_AS4 466
#define NOTE_B4  494
#define NOTE_C5  523
#define NOTE_CS5 554
#define NOTE_D5  587
#define NOTE_DS5 622
#define NOTE_E5  659
#define NOTE_F5  698
#define NOTE_FS5 740
#define NOTE_G5  784
#define NOTE_GS5 831
#define NOTE_A5  880
#define NOTE_AS5 932
#define NOTE_B5  988
#define NOTE_C6  1047
#define NOTE_CS6 1109
#define NOTE_D6  1175
#define NOTE_DS6 1245
#define NOTE_E6  1319
#define NOTE_F6  1397
#define NOTE_FS6 1480
#define NOTE_G6  1568
#define NOTE_GS6 1661
#define NOTE_A6  1760
#define NOTE_AS6 1865
#define NOTE_B6  1976
#define NOTE_C7  2093
#define NOTE_CS7 2217
#define NOTE_D7  2349
#define NOTE_DS7 2489
#define NOTE_E7  2637
#define NOTE_F7  2794
#define NOTE_FS7 2960
#define NOTE_G7  3136
#define NOTE_GS7 3322
#define NOTE_A7  3520
#define NOTE_AS7 3729
#define NOTE_B7  3951
#define NOTE_C8  4186
#define NOTE_CS8 4435
#define NOTE_D8  4699
#define NOTE_DS8 4978