Paso 4: El código de-(actualizado el 16 de abril de 2016)
/* * ---------------------------------------------------------------------------- * Typical pin layout used: * ----------------------------------------------------------------------------------------- * MFRC522 Arduino Arduino Arduino Arduino Arduino * Reader/PCD Uno Mega Nano v3 Leonardo/Micro Pro Micro * Signal Pin Pin Pin Pin Pin Pin * ----------------------------------------------------------------------------------------- * RST/Reset RST 9 5 D9 RESET/ICSP-5 RST * SPI SS SDA(SS) 10 53 D10 10 10 * SPI MOSI MOSI 11 / ICSP-4 51 D11 ICSP-4 16 * SPI MISO MISO 12 / ICSP-1 50 D12 ICSP-1 14 * SPI SCK SCK 13 / ICSP-3 52 D13 ICSP-3 15 * */ #include #include #include #include #include #include #define RST_PIN 9 // Configurable, see typical pin layout above #define SS_PIN 10#define Green_LED 6 //pin for green "door unlocked" indicator LED #define Red_LED 7 //pin for red "door locked" indicator LEDString inputString = ""; String command = ""; String value = ""; String password = "startrek"; // this is the password for opening and closing your door // you can set any pasword you like using digit and symbols boolean stringComplete = false; char array1[]="Swipe To Unlock"; // the string to print on the LCD char array2[]=" Door Locked "; char array3[]=" Door Unlocked "; char array4[]=" Locking "; char array5[]=" Unlocking "; char array6[]=" Accepted "; char array7[]=" Swipe To Lock "; int tim = 1; //the value of delay time// initialize the library with the numbers of the interface pins LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance. Servo myservo;String read_rfid; // nfc tags ID String ok_rfid_1="94e68de2"; String ok_rfid_2="f5642a50"; String ok_rfid_3="43ef222993c81";int addr = 1; // initalise eeprom address int eVal = 0; // initalise value to be stored in eeprom int lockPosition; // initialise lockPosition, used to value to sore in eVal int servo_position; int BUTTON1 = 8; // initialise the pin input of the lock/unlock buttonvoid setup() { Serial.begin(9600); // Initialize serial communications with the PC while (!Serial); SPI.begin(); mfrc522.PCD_Init(); inputString.reserve(50); // reserve 50 bytes in memory to save for string manipulation command.reserve(50); value.reserve(50); boolean stringOK = false; { lcd.init(); //initialize the lcd lcd.backlight(); //open the backlight lcd.begin(16,2); } // sets pin modes input/output and lights led pinMode(Green_LED, OUTPUT); pinMode(Red_LED, OUTPUT); digitalWrite(Green_LED, LOW); digitalWrite(Red_LED, HIGH); pinMode(BUTTON1,INPUT); myservo.attach(5); // servo pin number // sets initial locl position lockPosition = EEPROM.read(1); // Serial.print(EEPROM.read(1)); if(lockPosition == 1){ digitalWrite(Red_LED, LOW); digitalWrite(Green_LED, HIGH); } else { digitalWrite(Red_LED, HIGH); digitalWrite(Green_LED, LOW); lockUnlock(); } swipeText();}/* * Dump a byte array as hex values to Serial. */ void dump_byte_array(byte *buffer, byte bufferSize) { read_rfid=""; for (byte i = 0; i < bufferSize; i++) { read_rfid=read_rfid + String(buffer[i], HEX); } }void lockUnlock() { // locks or unlocks door myservo.attach(5); if(lockPosition == 1) { lock1(); servo_position = 0; myservo.write(servo_position); digitalWrite(Red_LED, HIGH); digitalWrite(Green_LED, LOW); delay(2500); lockPosition = 2; eVal = lockPosition; EEPROM.write(1,eVal); // Serial.print(eVal); } else if(lockPosition == 2) { lock2(); servo_position = 180; myservo.write(servo_position); digitalWrite(Red_LED, LOW); digitalWrite(Green_LED, HIGH); delay(2500); lockPosition = 1; eVal = lockPosition; EEPROM.write(1,eVal); // Serial.print(eVal); } myservo.detach(); }void swipeText() // sends text to the lcd screen { if(lockPosition == 1){ lcd.clear(); //Clears the LCD screen and positions the cursor in the upper-left corner. lcd.setCursor(0,0); // set the cursor to column 15, line 0 for (int positionCounter1 = 0; positionCounter1 < 15; positionCounter1++) { lcd.print(array3[positionCounter1]); // Print a message to the LCD. delay(tim); //wait for 250 microseconds } lcd.setCursor(0,1); // set the cursor to column 15, line 1 for (int positionCounter = 0; positionCounter < 15; positionCounter++) { lcd.print(array7[positionCounter]); // Print a message to the LCD. delay(tim); //wait for 250 microseconds } } else if(lockPosition == 2){ lcd.clear(); //Clears the LCD screen and positions the cursor in the upper-left corner. lcd.setCursor(0,0); // set the cursor to column 15, line 0 for (int positionCounter1 = 0; positionCounter1 < 15; positionCounter1++) { lcd.print(array2[positionCounter1]); // Print a message to the LCD. delay(tim); //wait for 250 microseconds } lcd.setCursor(0,1); // set the cursor to column 15, line 1 for (int positionCounter = 0; positionCounter < 15; positionCounter++) { lcd.print(array1[positionCounter]); // Print a message to the LCD. delay(tim); //wait for 250 microseconds } } }void lock1() // sends text to the lcd screen locking { lcd.clear(); lcd.setCursor(0,0); for (int positionCounter1 = 0; positionCounter1 < 15; positionCounter1++) { lcd.print(array6[positionCounter1]); delay(tim); } lcd.setCursor(0,1); for (int positionCounter1 = 0; positionCounter1 < 10; positionCounter1++) { lcd.print(array4[positionCounter1]); delay(tim); } }void lock2() // sends text to the lcd screen for unlocking { lcd.clear(); lcd.setCursor(0,0); for (int positionCounter1 = 0; positionCounter1 < 15; positionCounter1++) { lcd.print(array6[positionCounter1]); delay(tim); } lcd.setCursor(0,1); for (int positionCounter1 = 0; positionCounter1 < 12; positionCounter1++) { lcd.print(array5[positionCounter1]); delay(tim); } }void loop() { // checks for lock/unlock button press if(digitalRead(BUTTON1) == HIGH){ lockUnlock(); swipeText(); } // checks if bluetooth has sent a command // if arduino receive a string termination character like \n stringComplete will set to true if (stringComplete) { //Serial.println(inputString); delay(100); // identified the posiion of '=' in string and set its index to pos variable int pos = inputString.indexOf('='); // value of pos variable > or = 0 means '=' present in received string. if (pos > -1) { // substring(start, stop) function cut a specific portion of string from start to stop // here command will be the portion of received string till '=' // let received string is open=test123 // then command is 'open' command = inputString.substring(0, pos); // value will be from after = to newline command // for the above example value is test123 // we just ignoreing the '=' taking first parameter of substring as 'pos+1' // we are using '=' as a separator between command and vale // without '=' any other character can be used // we are using = menas our command or password must not contains any '=', otherwise it will cause error value = inputString.substring(pos+1, inputString.length()-1); // extract command up to \n exluded //Serial.println(command); //Serial.println(value); // checks password from bluetooth and is correct locks or unlocks the door // password.compareTo(value) compare between password tring and value string, if match return 0 if(!password.compareTo(value) && (command == "OPEN")){ // if password matched and command is 'OPEN' than door should open lockUnlock(); // call lockUnlock() function Serial.println(" OPEN"); // sent open feedback to phone delay(100); swipeText(); } if(!password.compareTo(value) && (command == "CLOSE")){ // if password matched and command is 'CLOSE' than door should close lockUnlock(); Serial.println(" CLOSE"); // sent " CLOSE" string to the phone delay(100); swipeText(); } if(password.compareTo(value)){ // if password not matched than sent wrong feedback to phone Serial.println(" WRONG"); delay(100); swipeText(); } } // clear the string for next iteration inputString = ""; stringComplete = false; } // looks for rfid tag to be presented if ( ! mfrc522.PICC_IsNewCardPresent()) return; // Select one of the cards if ( ! mfrc522.PICC_ReadCardSerial()) return; dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size); // checks if an rfid tags ID matches the stored list, if so it will then lock or unlock the door Serial.println(read_rfid); if (read_rfid==ok_rfid_1) { //ok, open the door. lockUnlock(); swipeText(); } //Add below as many "keys" as you want if (read_rfid==ok_rfid_2) { //also ok, open the door lockUnlock(); swipeText(); } //Add below as many "keys" as you want if (read_rfid==ok_rfid_3) { //also ok, open the door lockUnlock(); swipeText(); } }void serialEvent() { while (Serial.available()) { // get the new byte: char inChar = (char)Serial.read(); //Serial.write(inChar); // add it to the inputString: inputString += inChar; // if the incoming character is a newline or a carriage return, set a flag // so the main loop can do something about it: if (inChar == '\n' || inChar == '\r') { stringComplete = true; } } }
