/*
Written by Austin Fox for a simple low power digital wristwatch
to operate simply press the pushbutton and the current 12-hour time will flash sequentially

for wiring in Wokwi.com paster the following into diagram.json:

{
  "version": 1,
  "author": "Austin Fox",
  "editor": "wokwi",
  "parts": [
    { "type": "wokwi-arduino-uno", "id": "uno", "top": 0, "left": 0, "attrs": {} },
    {
      "type": "wokwi-7segment",
      "id": "sevseg1",
      "top": 61.86,
      "left": 501.89,
      "attrs": { "color": "white", "common": "cathode" }
    },
    {
      "type": "wokwi-pushbutton",
      "id": "btn1",
      "top": 78.35,
      "left": 755.51,
      "attrs": { "color": "BL" }
    },
    { "type": "wokwi-resistor", "id": "r1", "top": 11.34, "left": 572.35, "attrs": {} },
    { "type": "wokwi-resistor", "id": "r2", "top": 36.61, "left": 571.72, "attrs": {} },
    { "type": "wokwi-resistor", "id": "r3", "top": 35.74, "left": 415.68, "attrs": {} },
    { "type": "wokwi-resistor", "id": "r4", "top": 12.67, "left": 416.82, "attrs": {} },
    { "type": "wokwi-resistor", "id": "r5", "top": 154.2, "left": 424.05, "attrs": {} },
    { "type": "wokwi-resistor", "id": "r6", "top": 178.06, "left": 425.89, "attrs": {} },
    { "type": "wokwi-resistor", "id": "r7", "top": 157.78, "left": 578.53, "attrs": {} },
    { "type": "wokwi-resistor", "id": "r8", "top": 183.15, "left": 580.24, "attrs": {} },
    { "type": "wokwi-ds1307", "id": "rtc1", "top": 289.42, "left": 275.99, "attrs": {} }
  ],
  "connections": [
    [ "r5:2", "sevseg1:E", "green", [ "v-0.34", "h24.81" ] ],
    [ "sevseg1:D", "r6:2", "green", [ "v0" ] ],
    [ "sevseg1:C", "r7:1", "green", [ "v0" ] ],
    [ "sevseg1:G", "r3:2", "green", [ "v0" ] ],
    [ "sevseg1:F", "r4:2", "green", [ "v0" ] ],
    [ "sevseg1:A", "r1:1", "green", [ "v0" ] ],
    [ "sevseg1:B", "r2:1", "green", [ "v0" ] ],
    [ "uno:GND.2", "r8:1", "black", [ "v47.38", "h366.87", "v-59.81" ] ],
    [ "uno:5V", "rtc1:5V", "red", [ "v0" ] ],
    [ "uno:GND.2", "rtc1:GND", "black", [ "v0" ] ],
    [ "rtc1:SDA", "uno:A4", "green", [ "h0" ] ],
    [ "rtc1:SCL", "uno:A5", "green", [ "h0" ] ],
    [ "r8:2", "btn1:2.r", "green", [ "v-0.02", "h209.95", "v-77.97" ] ],
    [ "uno:5V", "btn1:1.r", "red", [ "v69.31", "h714.16", "v-174.54" ] ],
    [ "r6:1", "uno:2", "green", [ "v0.04", "h-135.09", "v-203.33", "h-77.93" ] ],
    [ "r5:1", "uno:3", "green", [ "v-0.29", "h-109.06", "v-201.54", "h-85.09" ] ],
    [ "r3:1", "uno:4", "green", [ "v-0.06", "h-75.61", "v-106.59", "h-130.78" ] ],
    [ "r4:1", "uno:5", "green", [ "v-0.28", "h-52.57", "v-105.7", "h-175.56" ] ],
    [ "r1:2", "uno:6", "green", [ "v-0.2", "h32.78", "v-128.07", "h-470.29" ] ],
    [ "r2:2", "uno:7", "green", [ "v0.14", "h58", "v-176.23", "h-495.91" ] ],
    [ "r7:2", "uno:8", "green", [ "v-0.51", "h76.34", "v-318.39", "h-575.35" ] ],
    [ "btn1:2.l", "uno:9", "green", [ "h-18.57", "v-291.54", "h-564.07" ] ],
    [ "uno:GND.3", "sevseg1:COM.1", "black", [ "v24.72", "h310.55" ] ]
  ]
}

  A  
F   B
  G
E   C
  D

*/

#include "RTClib.h"
RTC_DS1307 rtc;
const int buttonPin = 9;  
int buttonState = 0; 
int8_t pinSegA = 6;
int8_t pinSegB = 7;
int8_t pinSegC = 8;
int8_t pinSegD = 2;
int8_t pinSegE = 3;
int8_t pinSegF = 5;
int8_t pinSegG = 4;
// Segment                 a  b  c  d  e  f  g     // Digit
boolean digits [10] [7] = {1, 1, 1, 1, 1, 1, 0,    // 0
                           0, 1, 1, 0, 0, 0, 0,    // 1
                           1, 1, 0, 1, 1, 0, 1,    // 2
                           1, 1, 1, 1, 0, 0, 1,    // 3
                           0, 1, 1, 0, 0, 1, 1,    // 4
                           1, 0, 1, 1, 0, 1, 1,    // 5
                           1, 0, 1, 1, 1, 1, 1,    // 6
                           1, 1, 1, 0, 0, 0, 0,    // 7
                           1, 1, 1, 1, 1, 1, 1,    // 8
                           1, 1, 1, 0, 0, 1, 1, }; // 9
void setup () {
  if (! rtc.begin()) {2;
    abort();
  }
  pinMode (pinSegA, OUTPUT);
  pinMode (pinSegB, OUTPUT);
  pinMode (pinSegC, OUTPUT);
  pinMode (pinSegD, OUTPUT);
  pinMode (pinSegE, OUTPUT);
  pinMode (pinSegF, OUTPUT);
  pinMode (pinSegG, OUTPUT);
  pinMode(buttonPin, INPUT);
}
void displayDigit(uint8_t digit)
{
  digitalWrite(pinSegA, digits[digit][0]);
  digitalWrite(pinSegB, digits[digit][1]);
  digitalWrite(pinSegC, digits[digit][2]);
  digitalWrite(pinSegD, digits[digit][3]);
  digitalWrite(pinSegE, digits[digit][4]);
  digitalWrite(pinSegF, digits[digit][5]);
  digitalWrite(pinSegG, digits[digit][6]);
  delay(1100);
  digitalWrite(pinSegA, LOW);
  digitalWrite(pinSegB, LOW);
  digitalWrite(pinSegC, LOW);
  digitalWrite(pinSegD, LOW);
  digitalWrite(pinSegE, LOW);
  digitalWrite(pinSegF, LOW);
  digitalWrite(pinSegG, LOW);
}
void loop () {
DateTime now = rtc.now();
  int minutes = now.minute();
  int tens = minutes / 10;
  int ones = minutes % 10;
  int hours = now.hour();
  int tenss = hours / 10;
  int oness = hours % 10;
  int hoursss = hours - 12;
buttonState = digitalRead(buttonPin);
if (buttonState == HIGH) 
{
  if (hours >= 12)
  {
  displayDigit(hoursss);
  } 
  else if (hours < 12) 
  {
    displayDigit(tenss);
        delay(250);
    displayDigit(oness);
  }
        delay(250);
    digitalWrite(pinSegG, HIGH);
        delay(500);
    digitalWrite(pinSegG, LOW);
        delay(250);
    displayDigit(tens);
        delay(250);
    displayDigit(ones);
        delay(250);
    if (hours >= 12) 
    {
      digitalWrite(pinSegA, HIGH);
      digitalWrite(pinSegB, HIGH);
      digitalWrite(pinSegE, HIGH);
      digitalWrite(pinSegF, HIGH);
      digitalWrite(pinSegG, HIGH);  
    } else if (hours < 12) {
      digitalWrite(pinSegA, HIGH);
      digitalWrite(pinSegB, HIGH);
      digitalWrite(pinSegC, HIGH);
      digitalWrite(pinSegE, HIGH);
      digitalWrite(pinSegF, HIGH);
      digitalWrite(pinSegG, HIGH);
    }
    delay(1100);
    digitalWrite(pinSegA, LOW);
    digitalWrite(pinSegB, LOW);
    digitalWrite(pinSegC, LOW);
    digitalWrite(pinSegD, LOW);
    digitalWrite(pinSegE, LOW);
    digitalWrite(pinSegF, LOW);
    digitalWrite(pinSegG, LOW);
}
}