Smart Medibox

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHTesp.h>
#include <WiFi.h>
#include <time.h>


#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3c ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32

#define buzzer 5
#define led_1 15
#define cancel 34
#define ok 35
#define down 32
#define up 33
#define dht 12

#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     0
#define UTC_OFFSET_DST 0

//object declaration
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
DHTesp dhtSensor;

//variables
int days = 0;
int hours = 0;
int minutes = 0;
int seconds = 0;

bool alarm_enabled = true;
int n_alarms = 2;
int alarm_hours[] = {0, 0};
int alarm_minutes[] = {1, 10};
bool alarm_triggered[] = {false, false};

unsigned long timenow = 0;
unsigned long timelast = 0;

int n_notes = 8;
int C = 262;
int D = 294;
int E = 330;
int F = 349;
int G = 392;
int A = 440;
int B = 494;
int C_H = 523;
int notes[] = {C, D, E, F, G, A, B, C_H};

int current_mode = 0;
int max_modes = 4;
String options[] = {"1-set time", "2-set alarm 1", "3-set alarm 2", "4-disable alarm"};

void setup() {
  Serial.begin(9600);

  pinMode(buzzer, OUTPUT);
  pinMode(led_1, OUTPUT);
  pinMode(cancel, INPUT);
  pinMode(ok, INPUT);
  pinMode(down, INPUT);
  pinMode(up, INPUT);

  dhtSensor.setup(dht, DHTesp::DHT22);

  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    display.clearDisplay();
    print_line("conecting ti wifi", 0, 0, 2);
    delay(250);
  }

    display.clearDisplay();
    print_line("conected ti wifi", 0, 0, 2);
    delay(250);

    configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Don't proceed, loop forever
  }
  display.display();
  delay(2000); // Pause for 2 seconds

  // Clear the buffer
  display.clearDisplay();

  print_line("welcome to medibox", 20, 20, 2);
  delay(3000);



}

void loop() {

  update_time_with_check_alarm();

  if (digitalRead(cancel) == LOW) {
    delay(1000);
    go_to_menu();
    Serial.println("menu");
  }
  check_temp();

}

void print_line(String text, int row, int col, int text_size ) {

  display.setTextSize(text_size);             // Normal 1:1 pixel scale
  display.setTextColor(SSD1306_WHITE);        // Draw white text
  display.setCursor(col, row);            // Start at top-left corner
  display.println(text);

  display.display();

}

void print_time_now(void) {
  print_line(String(days), 0, 0, 2);
  print_line(":", 0, 20, 2);
  print_line(String(hours), 0, 30, 2);
  print_line(":", 0, 50, 2);
  print_line(String(minutes), 0, 60, 2);
  print_line(":", 0, 80, 2);
  print_line(String(seconds), 0, 90, 2);

}

void update_time(void) {

  timenow = millis() / 1000 ; //no of secconds after boot up
  seconds = timenow - timelast; //no of seconds after last updae time

  if (seconds >= 60) {
    minutes ++;
    timelast += 60;

  }

  if (minutes == 60) {
    minutes = 0 ;
    hours += 1;
  }

  if (hours == 24) {
    hours = 0 ;
    days += 1;
  } 

/*
  //over wifi
  struct tm timeinfo;
  getLocalTime(&timeinfo);

  char day_str[8];
  char hour_str[8];
  char min_str[8];
  char sec_str[8];
  strftime(day_str,8, "%d" , &timeinfo);
  strftime(sec_str,8, "%S" , &timeinfo);
  strftime(hour_str,8, "%H" , &timeinfo);
  strftime(min_str,8, "%M" , &timeinfo);

  hours = atoi(hour_str);
  minutes = atoi(min_str);
  days = atoi(day_str);
  seconds = atoi(sec_str);   */
}

void ring_alarm(void) {
  display.clearDisplay();
  print_line("medicine time !!", 0, 0, 2);

  //light the led
  digitalWrite(led_1, HIGH);

  //ring the buzzer
  while (digitalRead(cancel) == HIGH) {
    for (int i = 0; i < n_notes; i++) {
      if (digitalRead(cancel) == LOW) {
        delay(200);
        break;
      }
      tone(buzzer, notes[i]);
      delay(500);
      noTone(buzzer);
      delay(2);
    }
  }
  delay(200);

  //turn off led
  digitalWrite(led_1, LOW);
  display.clearDisplay();
}

void update_time_with_check_alarm(void) {

  display.clearDisplay();
  update_time();
  print_time_now();

  //check for alarms
  if (alarm_enabled == true) {
    for (int i = 0; i < n_alarms; i++) {
      if ((alarm_triggered[i]) == false && alarm_hours[i] == hours && alarm_minutes[i] == minutes) {
        ring_alarm();
        alarm_triggered[i] = true;
      }
    }
  }

}

int wait_for_button_press(void) {
  while (true) {
    if (digitalRead(cancel) == LOW) {
      delay(200);
      return cancel;
    }
    else if (digitalRead(ok) == LOW) {
      delay(200);
      return ok;
    }
    else if (digitalRead(down) == LOW) {
      delay(200);
      return down;
    }
    else if (digitalRead(up) == LOW) {
      delay(200);
      return up;
    }
  }
  update_time();
}

void go_to_menu(void) {
  while (digitalRead(cancel) == HIGH) {
    display.clearDisplay();
    print_line(options[current_mode], 0, 0, 2) ;

    int pressed = wait_for_button_press();

    if (pressed == up) {
      current_mode ++;
      current_mode = current_mode % 4;
      delay(200);
    }

    else if (pressed == down) {
      current_mode --;
      if (current_mode < 0) {
        current_mode = max_modes - 1;
      }
      delay(200);
    }

    else if (pressed == ok) {
      Serial.println(current_mode);
      run_mode(current_mode);
      delay(200);
    }
  }
}

void run_mode(int mode){

  // Set time
  int temp_hour = 0;
  int temp_minute = 0;

  int temp_alarmHour = 0;
  int temp_alarmMinute = 0;

  if (mode == 0) {
    //set hour
    while (digitalRead(cancel) == HIGH) {
      display.clearDisplay();
      print_line("enter hour: " + String(temp_hour), 0, 0, 2);

      int pressed = wait_for_button_press();

      if (pressed == up) {
        temp_hour ++;
        temp_hour = temp_hour % 24;
        delay(200);
      }

      else if (pressed == down) {
        temp_hour --;
        if (temp_hour < 0) {
          temp_hour = 23;
        }
        delay(200);
      }

      else if (pressed == ok) {
        hours = temp_hour;
        delay(200);
        break;
      }
    }
   while (digitalRead(cancel) == HIGH) {
    //set minute
    display.clearDisplay();
    print_line("enter minute: " + String(temp_minute), 0, 0, 2);

    int pressed = wait_for_button_press();

    if (pressed == up) {
      temp_minute ++;
      temp_minute = temp_minute % 60;
      delay(200);
    }

    else if (pressed == down) {
      temp_minute --;
      if (temp_minute < 0) {
        temp_minute = 59;
      }
      delay(200);
    }

    else if (pressed == ok) {
      minutes = temp_minute;
      delay(200);
      break;
    }
   }
    display.clearDisplay();
    print_line("Time set", 0, 0, 2);
    delay(200);
  }

  //Set alarm

  else if (mode == 1||mode == 2) {
    //set hour
    while (digitalRead(cancel) == HIGH) {
      display.clearDisplay();
      print_line("enter hour: " + String(temp_alarmHour), 0, 0, 2);

      int pressed = wait_for_button_press();

      if (pressed == up) {
        temp_alarmHour ++;
        temp_alarmHour = temp_alarmHour % 24;
        delay(200);
      }

      else if (pressed == down) {
        temp_alarmHour --;
        if (temp_alarmHour < 0) {
         temp_alarmHour = 23;
        }
        delay(200);
      }

      else if (pressed == ok) {
        alarm_hours[mode-1] = temp_alarmHour;
        delay(200);
        break;
      }
    }
   while (digitalRead(cancel) == HIGH) {
    //set minute
    display.clearDisplay();
    print_line("enter minute: " + String(temp_alarmMinute), 0, 0, 2);

    int pressed = wait_for_button_press();

    if (pressed == up) {
      temp_alarmMinute ++;
      temp_alarmMinute = temp_alarmMinute % 60;
      delay(200);
    }

    else if (pressed == down) {
      temp_alarmMinute --;
      if (temp_alarmMinute < 0) {
        temp_alarmMinute = 59;
      }
      delay(200);
    }

    else if (pressed == ok) {
      alarm_minutes[mode-1] = temp_alarmMinute;
      delay(200);
      break;
    }
   }
    display.clearDisplay();
    print_line("Alarm set", 0, 0, 2);
    alarm_enabled = true;
    delay(1000);
  }

  //disable alarm
  else if(mode ==3){
    alarm_enabled =false;

    display.clearDisplay();
    print_line("Alarm disabled", 0, 0, 2);
    delay(1000);
  }
}

void check_temp(void){
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  bool all_good = true;
  if(data.temperature > 35){
    all_good = false;
    print_line("Temp High", 40 , 0, 1);
  }

  else if(data.temperature < 25){
    all_good = false;
    print_line("Temp Low", 40 , 0, 1);
  }

  if(data.humidity > 85){
    all_good = false;
    print_line("Humid High", 50 , 0, 1);
  }

  else if(data.humidity < 35){
    all_good = false;
    print_line("Humid LOW", 50 , 0, 1);
  }
}