Dual authentication door lock

tanilt · August 26, 2023, 3:58am

Hey guys . in my previous post which i had no response i hard a challenge with my project where i used a both an RFID and a FINGERPRINT module to open and Electromagnetic lock. the idea is to be able to enroll(fingerprint), delete(fingerprint) and authenticate fingerprint and rfid card.
i ended up using switch case with with 4 cases.
without the codes for for authentication, enrollment and deletion, the void loop() function runs completely but when i add the authentication function to the loop it does not run. at the start of the int authenticate() function i added a message to be displayed in the LCD and it does but does not go beyond that. please here is the code bellow i really need help figuring this out as i am running out of time.

please go easy on me, i am only a beginner.

when i place a lcd message after the functions the message is displayed without execution of loop.


#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Adafruit_Fingerprint.h>
#include <MFRC522.h>
#include <Keypad.h>
#include <SoftwareSerial.h>
// Initialize the fingerprint module
SoftwareSerial mySerial(2, 3);
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);
// Initialize the RFID module
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN);
// Initialize the LCD i2c
LiquidCrystal_I2C lcd(0x27, 16, 2);
// Initialize the keypad
const byte ROWS = 4;
const byte COLS = 3;
char hexakeys[ROWS][COLS] = 
    {
      {'1', '2', '3'},
      {'4', '5', '6'},
      {'7', '8', '9'},
      {'*', '0', '#'}
    };
byte pinRowPins[ROWS] = {8, 7, 6, 5};
byte pinColPins[COLS] = {A0, A1, A2};
Keypad Mykeys = Keypad(makeKeymap(hexakeys), pinRowPins, pinColPins, ROWS, COLS);
// Constants
const int PIN_LENGTH = 5;
const int AUTH_OPTION = 1;
const int ENROLL_OPTION = 2;
const int DELETE_OPTION = 3;
// Variables
int menuOption = 0;
int subMenuOption = 0;
String pinInput = "";

int state;
int EMLock =A0;
int FPrint =A1;

void setup() 
    {

      pinMode(EMLock, OUTPUT);
     pinMode(A1, OUTPUT);
     pinMode(A2, OUTPUT);
     // Initialize the LCD i2c
      lcd.init();lcd.begin(16, 2);
      lcd.backlight();
      //Initialize the RFID module
      
      SPI.begin(); // Initiate SPI bus
      mfrc522.PCD_Init(); 
      Serial.begin(9600);
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("1. Auth 2. Enroll,  ");
      lcd.setCursor(0, 1);
      lcd.print("3. Delete      ");

        Serial.begin(9600); // Initiate a serial communication
 
while (!Serial);  // For Yun/Leo/Micro/Zero/...
  delay(100);
  Serial.println("fingertest");
 
  // set the data rate for the sensor serial port
  finger.begin(57600);
  
  if (finger.verifyPassword()) {
    Serial.println("Found fingerprint sensor!");
  } else {
    Serial.println("Did not find fingerprint sensor :(");
    while (1) { delay(1); }
  }

  finger.getTemplateCount();
  Serial.print("Sensor contains "); Serial.print(finger.templateCount); Serial.println(" templates");
  Serial.println("Waiting for valid finger...");
    } 

void loop() 
    {      // Check for keypad input
      char getkey = Mykeys.getKey();
      if (getkey)
        {
          lcd.clear();
          lcd.setCursor(0,0);  
          lcd.print(getkey);
          switch (getkey) 
                {
                  case '1': //case for authentiication which does not execute 
                    menuOption = AUTH_OPTION;
                   authenticate();
                   
                    delay(2000);
                    resetMenu();
                    break;
                  case '2':
                    menuOption = ENROLL_OPTION;
                  showSubMenu();
                    break;
                  case '3':
                    menuOption = DELETE_OPTION;
                  showSubMenu();
                    break;
                  case '*':
                  resetMenu();
                    break;
                    default:
                      if (subMenuOption != 0)
                        {// Collect Pin 
                           if (pinInput.length()< PIN_LENGTH) 
                             { lcd.setCursor(pinInput.length(), 1);
                                  lcd.print('*'); delay(200);
                                  
                                  pinInput += getkey;
                                                              
                             }
                              //Check if PIN input
                           if (pinInput.length()==PIN_LENGTH)
                             { 
                                processPINInput();
                             } 
                        }
                    break;
                }
        }
    } 
uint8_t getFingerprintID() {
  uint8_t p = finger.getImage();
  switch (p) {
    case FINGERPRINT_OK:
      Serial.println("Image taken");
      break;
    case FINGERPRINT_NOFINGER:
      Serial.println("No finger detected");
      return p;
    case FINGERPRINT_PACKETRECIEVEERR:
      Serial.println("Communication error");
      return p;
    case FINGERPRINT_IMAGEFAIL:
      Serial.println("Imaging error");
      return p;
    default:
      Serial.println("Unknown error");
      return p;
  }

  // OK success!

  p = finger.image2Tz();
  switch (p) {
    case FINGERPRINT_OK:
      Serial.println("Image converted");
      break;
    case FINGERPRINT_IMAGEMESS:
      Serial.println("Image too messy");
      return p;
    case FINGERPRINT_PACKETRECIEVEERR:
      Serial.println("Communication error");
      return p;
    case FINGERPRINT_FEATUREFAIL:
      Serial.println("Could not find fingerprint features");
      return p;
    case FINGERPRINT_INVALIDIMAGE:
      Serial.println("Could not find fingerprint features");
      return p;
    default:
      Serial.println("Unknown error");
      return p;
  }
  
  // OK converted!
  p = finger.fingerFastSearch();
  if (p == FINGERPRINT_OK) {
    Serial.println("Found a print match!");
  } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
    Serial.println("Communication error");
    return p;
  } else if (p == FINGERPRINT_NOTFOUND) {
    Serial.println("Did not find a match");
    
lcd.clear();
   lcd.setCursor(2,0);
   lcd.println("INVALID BIO-ID  ");
   lcd.setCursor(2,1);
   lcd.println("TRY AGAIN  ");
   state = HIGH;  
   return p;  
  } 
  else {
    Serial.println("Unknown error");
    return p;
  }   
  
  // found a match!
  Serial.print("Found ID #"); Serial.print(finger.fingerID); 
  Serial.print(" with confidence of "); Serial.println(finger.confidence); 

  return finger.fingerID;
}
// returns -1 if failed, otherwise returns ID #

int getFingerprintIDez() //function which test for fingerprint 
{
  uint8_t p = finger.getImage();
  if (p != FINGERPRINT_OK)  return -1;

  p = finger.image2Tz();
  if (p != FINGERPRINT_OK)  return -1;

  p = finger.fingerFastSearch();
  if (p != FINGERPRINT_OK)  return -1;
  
  // found a match!

 lcd.clear();
digitalWrite(FPrint, HIGH);
  lcd.setCursor(2,0);
   lcd.println("VALID BIO-ID     ");
   lcd.setCursor(2,1);
   lcd.println("SCAN RFID       ");
   state = HIGH;
  
  Serial.print("Found ID #"); Serial.print(finger.fingerID); 
  Serial.print(" with confidence of "); Serial.println(finger.confidence);
  return finger.fingerID; 
}

void ScanRFIDCard() //function which checks the RFID card
  {
     if ( ! mfrc522.PICC_IsNewCardPresent())
       {
         return;
       }
         //Select one of the cards
     if ( ! mfrc522.PICC_ReadCardSerial())
       {
         return;
        }
//Show UID on serial monitor
Serial.print("UID tag :");String content= "";
byte letter;
for (byte i = 0; i < mfrc522.uid.size; i++)
{
Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(mfrc522.uid.uidByte[i], HEX);
content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
 content.concat( String(mfrc522.uid.uidByte[i], HEX));
}
Serial.println();
Serial.print("Message: ");
content.toUpperCase();
if ((content.substring(1) == "A3 38 D7 0A") && (state==HIGH)) 
{
   digitalWrite(EMLock, HIGH);
   lcd.clear();
   lcd.setCursor(1,0);
   lcd.println("ACCESS GRANTED     ");
   lcd.setCursor(2,1);
   lcd.println("WELCOME JINUI     ");
   delay(5000);
   digitalWrite(EMLock, LOW);
   digitalWrite(5, LOW);  
   lcd.clear();
   lcd.setCursor(1,0);
   lcd.println("  TIME OUT!     ");
   lcd.setCursor(2,1);
   lcd.println("START OVER     ");
   state=LOW;
} 
else if ((content.substring(1) == "A3 38 D7 0A") && (state==LOW)) 
 {
  digitalWrite(EMLock, LOW);
   lcd.clear();
   lcd.setCursor(1,0);
   lcd.println("INVALID ORDER   ");
   lcd.setCursor(1,1);
   lcd.println(" FINGER FIRST   ");
}
else if ((content.substring(1) != "A3 38 D7 0A") && (state==LOW)) 
 {
  digitalWrite(EMLock, LOW);
   lcd.clear();
   lcd.setCursor(1,0);
   lcd.println("INVALID ORDER  ");
   lcd.setCursor(1,1);
   lcd.println(" FINGER FIRST    ");
}

else if ((content.substring(1) != "A3 38 D7 0A") && (state==HIGH)) 
 {
  digitalWrite(EMLock, LOW);
   lcd.clear();
   lcd.setCursor(0,0);
   lcd.println("UNAUTHORIZED ID  ");
   lcd.setCursor(1,1);
   lcd.println("ACCESS DENIED!  ");
}  
   }    
   
   char waitForUserInput() 
    {
      while (true) 
           {
             char getkey = Mykeys.getKey();
             if (getkey) 
               {
                  return getkey;
               }
           }
    } 
    
 void authenticate() //the two functions are combined here before being moved to the case
    {// Display appropriate messages on LCD
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("hope on this one"); 
      getFingerprintIDez();
      delay(50);    //don't ned to run this at full speed.
      ScanRFIDCard();      
      delay(2000);
      resetMenu();
    } 
void enroll() 
    {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("enrolling");
      lcd.setCursor(0, 1);
      lcd.print("yk");

      delay(2000);
      resetMenu();
    } 
void deleteFingerprint() 
    {
      digitalWrite(A2,HIGH);
      delay(200);
      digitalWrite(A2,LOW);
      delay(2000);
      resetMenu();
    }
    
    void showSubMenu() 
    {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("INPUT PIN: ");
      subMenuOption = menuOption;
      menuOption = 0;
      pinInput = "";
    }

void resetMenu() 
    {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("1. Auth, 2. Enroll,");
      lcd.setCursor(0, 1);
      lcd.print("3. Delete    ");

        menuOption = 0;
        subMenuOption = 0;
        pinInput = "";
    } 

void processPINInput()
    {    //Check PIN for respective options
      if (subMenuOption == ENROLL_OPTION)
        {
          if (pinInput == "45456") 
            {
              enroll();
            }
      else 
          {
            lcd.clear();
            lcd.print("ACCESS DENIED!");
            delay(2000);
            resetMenu();    
          }
        }
      else if (subMenuOption == DELETE_OPTION)
             {
               if (pinInput == "56564")
                 {
                   deleteFingerprint();
                 }
               else 
                  {
                    lcd.clear();
                    lcd.print("ACESS DENIED!");
                    delay(2000);
                    resetMenu();  
                  }    
             }
    }

sterretje · August 26, 2023, 7:11am

Your using A0 .. A2 for two different purposes; this might cause problems.

byte pinColPins[COLS] = {A0, A1, A2};

and

int EMLock = A0;
int FPrint = A1;
...
...
  pinMode(EMLock, OUTPUT);
  pinMode(A1, OUTPUT);
  pinMode(A2, OUTPUT);

tanilt · August 31, 2023, 12:03pm

that has been checked but it still does not execute. i discovered that just the int ScanRFIDCard() function executes but the int getFingerprintIDez() function does not and the int ScanRFIDCard() function depends on int getFingerprintIDez() to execute...

system · February 27, 2024, 12:04pm

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.

Topic		Replies	Views
Fingerprint and RFID dual Authentication lock Project Guidance	2	256	February 17, 2024
Need help getting my code to run as it should with a fingerprint sensor. Project Guidance	5	476	May 5, 2021
[CODE HELP] Fingerprint/RFID door Programming Questions	17	4422	May 5, 2021
Code compiles but Dosent run as it should when conected to arduino Programming Questions	4	540	May 6, 2021
I need some help in my fingerprint project Project Guidance	4	156	August 29, 2024

Dual authentication door lock

Related Topics