Arduino_personal work_alarm_v1

gistfile1.txt

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <virtuabotixRTC.h>

//use interrupt 0 -> pin 2 (button0)
#define lock 0
//button1
#define add_sec 4
//button2
#define add_min 3
//RGB LED
#define R 11
#define G 10
#define B 9

//consult library
virtuabotixRTC myRTC(6, 7, 8);
LiquidCrystal_I2C lcd(0x27,16,2); 

uint8_t set_time[3]={0,0,0};
uint8_t temp_time[3]={0,0,0};

//mode(HIGH for display time ,  LOW for set alarm)
volatile int state=HIGH;

void setup()  {  
  //LCD setup
  lcd.init();
  lcd.backlight();  
  //interrupt 0 -> pin 2
  attachInterrupt(lock,timeMode,FALLING);
  //set time
  pinMode(add_sec,INPUT);
  pinMode(add_min,INPUT);
  //RGB LED as alarm
  pinMode(R,OUTPUT);
  pinMode(G,OUTPUT);
  pinMode(B,OUTPUT);
  //DS1302 setup
  myRTC.setDS1302Time(00, 59, 23, 6, 10, 1, 2014);
  
  Serial.begin(9600);
}

void loop()  { 
  if(state==HIGH){
    displayTime();
  }else{
    setAlarm();
  }
}                                                                                                      


void timeMode(){
  digitalWrite(R,LOW);
  digitalWrite(G,LOW);
  digitalWrite(B,HIGH);
  if(state==HIGH){
    set_time[0]=temp_time[0];
    set_time[1]=temp_time[1];
    set_time[2]=temp_time[2];
  }
  state=!state;
}

void setAlarm(){
  digitalWrite(R,LOW);
  digitalWrite(G,LOW);
  digitalWrite(B,HIGH);
  //set up alarm
  if(digitalRead(add_min)==0)set_time[1]++;
  if(digitalRead(add_sec)==0)set_time[2]++;
  //carry in or no
  if(set_time[0]>=24){
    set_time[0]=set_time[0]-24;
  }
  if(set_time[1]>=60){
    set_time[0]++;
    set_time[1]=set_time[1]-60;}
  if(set_time[2]>=60){
    set_time[1]++;
    set_time[2]=set_time[2]-60;}
  //output time
  lcd.setCursor(0,1);
  lcd.print(set_time[0]);
  lcd.print(":");  
  lcd.print(set_time[1]);
  lcd.print(":");  
  lcd.print(set_time[2]);
  delay(250);
  lcd.clear();
}

void displayTime(){
  //ouput time
  myRTC.updateTime();
  lcd.setCursor(0,0);
  lcd.print(myRTC.hours);  
  lcd.print(":");         
  lcd.print(myRTC.minutes);  
  lcd.print(":");           
  lcd.print(myRTC.seconds);
  
  //save temporary time
  temp_time[0]=myRTC.hours;
  temp_time[1]=myRTC.minutes;
  temp_time[2]=myRTC.seconds; 
  delay(1000);
  lcd.clear();
  
  //check the time whether reach the alarm time or not.
  if(set_time[0]==myRTC.hours && set_time[1]==myRTC.minutes && set_time[2]==myRTC.seconds){
    digitalWrite(R,HIGH);
    digitalWrite(G,LOW);
    digitalWrite(B,LOW);
    delay(2000);
  }else{
    digitalWrite(R,LOW);
    digitalWrite(G,HIGH);
    digitalWrite(B,LOW);
  }
}