Stap 5: Software: de Code
/************************************************************************************************************ * Sunrise Alarm Clock by Bhavika Shah MakeCourse Spring 2016 * * When the LDR detects the sunrise, it will cause the servo(hammer attached) to turn 50 degrees * and hit a bell, as a wake up alarm. As a backup the code will calculate the sunrise time for the location * of the clock using latitude and longitude coordinates, and activate the alarm in case there is no sunrise * detected. This project also includes an RTC module that will keep time in case of power outage. ***********************************************************************************************************/ #include <Wire.h> #include <Servo.h> #include <TimeLib.h> //works in conjunction with DS1307RTC.h #include <TimeLord.h> //contains sunrise calculations #include <DS1307RTC.h> //RTC library #include <LiquidCrystal_I2C.h> //library to be used with LCD with a YwRobot Arduino LCM1602 IIC V1 module attached #define DS1307_ADDRESS 0x68 //RTC addressLiquidCrystal_I2C lcd(0x27,20,4); //Set the LCD address to 0x27 for a 16 chars and 2 line display Servo myservo; //Make a servo object int pos = 50; //Setting a servo position at 50 degrees int lightPin = A0; //Connect LDR to pin A0 int threshold = 500; //You set the light threshold to a value const int TIMEZONE = -5; //Set your time zone; mine is EST const float LATITUDE = 27.9506; //Set your latitude and longitude; mine are for Tampa, FL const float LONGITUDE = -82.4572; int wake = 0; // bool flag = 1; //Here, we have a boolean flag that will change when we perform our wakeup actions int sunriseMin; //minute of that days calculated sunrise to be used for comparison</p><p>void setup(){ void digitalClockDisplay(); //digital clock display of the time void printDigits(); //utility function for digital clock display: prints preceding colon and leading 0 void sunriseCalc(); //calculate sunrise void actionAM(); //function to perform wake up actions void checkPM(); //for debugging void lowLight(); //function to display sensor value if it is less than the threshold Serial.begin(9600); //begin serial communcation pinMode(13, OUTPUT); myservo.attach(9); //servo attached to pin 9 lcd.init(); //initialise the lcd lcd.backlight(); //turning on the LCD backlight setSyncProvider(RTC.get); //function to get the time from the RTC if(timeStatus()!= timeSet){ Serial.println("Unable to sync with the RTC"); } else { Serial.println("RTC has set the system time"); digitalClockDisplay(); } sunriseCalc(); }</p><p>void loop(){ if(wake = 0){ if (isAM()){ Serial.println("isAM true"); wake = 1; //if it's morning 'wake' will change from 0 to 1 flag = 0; //we will also change the flag variable to 0 Serial.println("First if is running"); //debugging Serial.print("flag: "); //for debugging Serial.println(flag); //for debugging } } if(wake = 1 && flag == 0) { //Because wake is 1, and flag is 0 , and we can begin light detection digitalClockDisplay(); //consistent readout of the the current time flag = 1; //We will change flag to 1 because the wakeup actions are being performed Serial.println(analogRead(lightPin)); //readout of the current light being detected if(analogRead(lightPin) > threshold){ //if the light detected is greater than our threshold: actionAM(); //perform wake up actions Serial.println("Second if is running"); //debugging } else{ flag = 0; printDigits(minute()); //debugging Serial.println(); //If no light is detected to perform wake up actions, we will check to see if current time has not passed sunriseMin + 10 if (sunriseMin < minute()){ //if the current minute value is greater than the sunrise minute value actionAM(); //perform wake up actions flag = 1; Serial.println("sunrise min is lower than current min"); //debug to let us know that the loop has gone through this statement } lowLight(); //if there is no light, we will check } delay(1000); } if (isPM()){ checkPM(); } } /**************************************************** FUNCTIONS ****************************************************/ void sunriseCalc(){ TimeLord tardis; tardis.TimeZone(-4 * 60); // tell TimeLord what timezone your RTC is synchronized to. You can ignore DST tardis.Position( LATITUDE, LONGITUDE ); // tell TimeLord where in the world we are byte today[] = { 0, 0, 12, 6, 4, 2016 }; // store today's date (at noon) in an array for TimeLord to use if (tardis.SunRise(today)){ // if the sun will rise today (it might not, in the [ant]arctic) Serial.print("Sunrise: "); Serial.print((int) today[tl_hour]); Serial.print(":"); Serial.print((int) today[tl_minute]); Serial.print(" AM"); Serial.println(); sunriseMin = (int) today[tl_minute] + 10; //storing the value of the sunrise time + 10 Serial.print("sunriseMin: "); Serial.println(sunriseMin); } } void digitalClockDisplay(){ // digital clock display of the time Serial.print(hour()); printDigits(minute()); printDigits(second()); Serial.print(" "); Serial.print(day()); Serial.print("/"); Serial.print(month()); Serial.print("/"); Serial.print(year()); Serial.println(); delay(200); } void printDigits(int digits){ // utility function for digital clock display: prints preceding colon and leading 0 Serial.print(":"); if(digits < 10) Serial.print('0'); Serial.print(digits); } void actionAM(){ //function that contains all actions to be performed when it is time to get up! digitalWrite(13, HIGH); //turns the onboard LED on Serial.println("High"); //we print the status of the amount of light detected lcd.setCursor(3,0); //setting the cursor position lcd.print("Wake up Bee"); //printing a wake up message! lcd.setCursor(2,1); lcd.print("It's Sunrise!"); lcd.setCursor(0,2); //servo actions for (pos = 0; pos <= 50; pos += 1) { // goes from 0 degrees to 50 degrees in steps of 1 degree myservo.write(pos); delay(5); } for (pos = 50; pos >= 0; pos -= 1) { // goes from 50 degrees to 0 degrees myservo.write(pos); delay(5); } for (pos = 0; pos <= 50; pos += 1) { //0--->50 repeat myservo.write(pos); delay(5); } for (pos = 50; pos >= 0; pos -= 1) { //50--->0 repeat myservo.write(pos); delay(5); } } void checkPM(){ //function that returns a statement on the serial monitor if it is PM; used for debugging lcd.noDisplay(); //turning off the display on the LCD to conserve power Serial.println("isPM() True"); digitalClockDisplay(); Serial.println(analogRead(lightPin)); //readout of the current light being detected delay(1000); } void lowLight(){ //if the light detected is less than the threshold, we will print it on the serial monitor to keep track of it Serial.println(analogRead(lightPin)); //readout of the current light being detected digitalWrite(13, LOW); Serial.println("Low"); myservo.write(0); //return servo to 0 degrees }
