Help with my Fingerprint Attendance System

jaspher_23 · March 30, 2024, 12:00pm

I want to create a system that allows me to register and check if my fingerprint is stored on the fingerprint scanner. I have been able to make it work, but I need to uncomment each of the options in the loop code to be able to use it. If I enable both options, I am not able to press any buttons. How can I fix this issue? I'm only using one button btw

loop

void loop() {
  // put your main code here, to run repeatedly:

  pushButton.tick(); 

  int result = getFingerprintIDez(); -- I need to uncomment this to make the button works
  if (result > 0) {
    return;
  }

  delay(10);
}

Full Code:

#include <Arduino.h>
#include <Adafruit_Fingerprint.h>
#include "OneButton.h"
#include <LiquidCrystal_I2C.h>
#include <SoftwareSerial.h>
#include "uRTCLib.h"

LiquidCrystal_I2C lcd(0x27, 16, 2);
OneButton pushButton(A3, true);
SoftwareSerial fingerSerial(2, 3);
uRTCLib rtc(0x68);

Adafruit_Fingerprint finger = Adafruit_Fingerprint(&fingerSerial);

int idCount = 1;
bool regMode = false;

char daysOfTheWeek[7][12] = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };

uint8_t id;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();

  centerText(0, "Initializing");
  centerText(1, "Data");

  while (!Serial)
    ;
  delay(100);
  Serial.println("\n\nAdafruit Fingerprint sensor enrollment");

  lcd.clear();
  finger.begin(57600);

  if (finger.verifyPassword()) {
    Serial.println("Found fingerprint sensor!");
    centerText(0, "Fingerprint");
    centerText(1, "Found");
  } else {
    Serial.println("Did not find fingerprint sensor :(");
    centerText(0, "Fingerprint");
    centerText(1, "not Found");
    while (1) { delay(1); }
  }

  finger.getTemplateCount();

  if (finger.templateCount == 0) {
    Serial.print("Sensor doesn't contain any fingerprint data. Please run the 'enroll' example.");
  } else {
    Serial.println("Waiting for valid finger...");
    Serial.print("Sensor contains ");
    Serial.print(finger.templateCount);
    Serial.println(" templates");
  }

  delay(1000);
  lcd.clear();
  centerText(0, "Fingerprint");
  lcd.setCursor(0, 1);
  lcd.print("Attedance System");

  URTCLIB_WIRE.begin();
  // rtc.set(0, 28, 11, 6, 29, 3, 24);
  // rtc.set(second, minute, hour, dayOfWeek, dayOfMonth, month, year)
  // set day of week (1=Sunday, 7=Saturday)

  pushButton.attachClick(incrementID);
  pushButton.attachDoubleClick(decrementID);
  pushButton.attachMultiClick(multiClick);
}

void loop() {
  // put your main code here, to run repeatedly:

  pushButton.tick();

  int result = getFingerprintIDez();
  if (result > 0) {
    return;
  }

  delay(10);
}


void centerText(int Yaxis, String text) {
  int totalColumns = 16;
  int textLength = text.length();
  int startingColumn = (totalColumns - textLength) / 2;
  lcd.setCursor(startingColumn, Yaxis);
  lcd.print(text);
}

void incrementID() {
  if (regMode) {
    idCount++;
    if (idCount > 127) {
      idCount = 1;
    }
    lcd.clear();
    centerText(0, "Enter your ID:");
    centerText(1, String(idCount));
  }
  delay(100);
}

void decrementID() {
  if (regMode) {
    idCount--;
    if (idCount < 1) {
      idCount = 1;
    }
    lcd.clear();
    centerText(0, "Enter your ID:");
    centerText(1, String(idCount));
  }

  delay(100);
}

void multiClick() {
  int n = pushButton.getNumberClicks();
  if (n == 3) {
    // Set regMode to false when the button is clicked 3 times
    Serial.print("3");
    if (regMode) {
      home();
    }
  } else if (n == 4) {
    // Enroll the user when the button is clicked 4 times
    if (!regMode) {
      enroll();
    }
  } else if (n == 5) {
    if (regMode) {
      enrollnow();
    }
  } else {
    Serial.print("multiClick(");
    Serial.print(n);
    Serial.println(") detected.");
  }
}

void home() {
  regMode = false;
  idCount = 1;
  lcd.clear();
  centerText(0, "Fingerprint");
  lcd.setCursor(0, 1);
  lcd.print("Attedance System");
  delay(100);
}

void enroll() {
  lcd.clear();
  centerText(0, "Enter your ID:");

  regMode = true;

  while (regMode) {
    centerText(1, String(idCount));
    pushButton.tick();
  }

  Serial.print("Exited enroll function.");
}

void enrollnow() {
  id = idCount;
  getFingerprintEnroll();
  for (int i = 0; i < 127; i++)
    ;

  {
    // read the data on sd card
    // if (read) {
    //   write
    //   break;
    // }
    regMode = false;
    Serial.print(regMode);
  }
  return;
}

void checkFingerData() {
  if (!regMode) {
    if (finger.fingerID == 1) {
      if (finger.confidence > 60) {
        lcd.clear();
        centerText(0, "Good Morning");
        centerText(1, "User 1");
        delay(1000);
        lcd.clear();
        getTime();
        delay(1000);
        lcd.clear();
        centerText(0, "Fingerprint");
        lcd.setCursor(0, 1);
        lcd.print("Attendance System");
      }
    }
  }
}

void getTime() {
  rtc.refresh();

  lcd.setCursor(0, 0);
  lcd.print("Time: ");
  
  int hour12 = rtc.hour() % 12;
  if (hour12 == 0) {
    hour12 = 12;
  }
  
  lcd.print(hour12);
  lcd.print(":");
  
  if (rtc.minute() < 10) {
    lcd.print("0");
  }
  lcd.print(rtc.minute());
  
  if (rtc.hour() < 12) {
    lcd.print(" AM");
  } else {
    lcd.print(" PM");
  }

  lcd.setCursor(0, 1);
  lcd.print("Date: ");
  lcd.print(rtc.month());
  lcd.print("/");
  lcd.print(rtc.day());
  lcd.print("/");
  lcd.print(rtc.year());

  delay(1000);
}

uint8_t getFingerprintEnroll() {
  int p = -1;
  lcd.clear();
  centerText(0, "Your ID: " + String(id));
  centerText(1, "Place finger");
  delay(2000);
  while (p != FINGERPRINT_OK) {
    p = finger.getImage();
    switch (p) {
      case FINGERPRINT_OK:
        Serial.println("Image taken");
        lcd.clear();
        centerText(0, "Image taken");
        break;
      case FINGERPRINT_NOFINGER:
        Serial.println("No Finger");
        lcd.clear();
        centerText(0, "No Finger Found");
        break;
      case FINGERPRINT_PACKETRECIEVEERR:
        Serial.println("Communication error");
        lcd.clear();
        centerText(0, "Communication");
        centerText(1, "Error");
        break;
      case FINGERPRINT_IMAGEFAIL:
        Serial.println("Imaging error");
        lcd.clear();
        centerText(0, "Imaging Error");
        break;
      default:
        Serial.println("Unknown error");
        lcd.clear();
        centerText(0, "Unknown error");
        break;
    }
  }

  // OK success!

  p = finger.image2Tz(1);
  switch (p) {
    case FINGERPRINT_OK:
      Serial.println("Image converted");
      lcd.clear();
      centerText(0, "Image converted");
      break;
    case FINGERPRINT_IMAGEMESS:
      Serial.println("Image too messy");
      lcd.clear();
      centerText(0, "Image too messy");
      return p;
    case FINGERPRINT_PACKETRECIEVEERR:
      Serial.println("Communication error");
      lcd.clear();
      centerText(0, "Communication");
      centerText(1, "Error");
      return p;
    case FINGERPRINT_FEATUREFAIL:
      Serial.println("Could not find fingerprint features");
      lcd.clear();
      centerText(0, "Feature");
      centerText(1, "Not Found 1");
      return p;
    case FINGERPRINT_INVALIDIMAGE:
      Serial.println("Could not find fingerprint features");
      lcd.clear();
      centerText(0, "Feature");
      centerText(1, "Not Found 2");
      return p;
    default:
      Serial.println("Unknown error");
      lcd.clear();
      centerText(0, "Unknown error");
      return p;
  }

  Serial.println("Remove finger");
  lcd.clear();
  centerText(0, "Remove");
  centerText(1, "your Finger");
  delay(2000);
  p = 0;
  while (p != FINGERPRINT_NOFINGER) {
    p = finger.getImage();
  }
  Serial.print("ID ");
  Serial.println(id);
  p = -1;
  Serial.println("Place same finger again");
  lcd.clear();
  centerText(0, "Place your");
  centerText(1, "Finger Again");
  while (p != FINGERPRINT_OK) {
    p = finger.getImage();
    switch (p) {
      case FINGERPRINT_OK:
        Serial.println("Image taken");
        break;
      case FINGERPRINT_NOFINGER:
        Serial.print(".");
        break;
      case FINGERPRINT_PACKETRECIEVEERR:
        Serial.println("Communication error");
        break;
      case FINGERPRINT_IMAGEFAIL:
        Serial.println("Imaging error");
        break;
      default:
        Serial.println("Unknown error");
        return;
    }
  }

  // OK success!

  p = finger.image2Tz(2);
  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!
  Serial.print("Creating model for #");
  Serial.println(id);

  p = finger.createModel();
  if (p == FINGERPRINT_OK) {
    Serial.println("Prints matched!");
  } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
    Serial.println("Communication error");
    lcd.clear();
    centerText(0, "Communication");
    centerText(1, "Error");
    delay(500);
    home();
    return p;
  } else if (p == FINGERPRINT_ENROLLMISMATCH) {
    Serial.println("Fingerprints did not match");
    lcd.clear();
    centerText(0, "Try Again");
    delay(500);
    home();
    return p;
  } else {
    Serial.println("Unknown error");
    return p;
  }

  Serial.print("ID ");
  Serial.println(id);
  p = finger.storeModel(id);
  if (p == FINGERPRINT_OK) {
    Serial.println("Stored!");
    lcd.clear();
    centerText(0, "Your ID");
    centerText(1, "is Stored");
    delay(2000);
    id = 1;
    idCount = 1;
    lcd.clear();
    centerText(0, "Fingerprint");
    lcd.setCursor(0, 1);
    lcd.print("Attedance System");
  } else if (p == FINGERPRINT_PACKETRECIEVEERR) {
    Serial.println("Communication error");
    return p;
  } else if (p == FINGERPRINT_BADLOCATION) {
    Serial.println("Could not store in that location");
    return p;
  } else if (p == FINGERPRINT_FLASHERR) {
    Serial.println("Error writing to flash");
    return p;
  } else {
    Serial.println("Unknown error");
    return p;
  }
}

// returns -1 if failed, otherwise returns ID #
int getFingerprintIDez() {
  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!
  Serial.print("Found ID #");
  Serial.print(finger.fingerID);
  Serial.print(" with confidence of ");
  Serial.println(finger.confidence);
  checkFingerData();
  return finger.fingerID;
}

StefanL38 · March 30, 2024, 2:24pm

Hi @jaspher_23

welcome to the arduino-forum.

well done to post your code as a code-section in your very first posting.

What do you exactly mean with "both options" ?

describe in detail what is option 1
describe in detail what is option 2

You should post that code-version that reacts on the buttons too.

You should describe with much more details and precision how the code behaves.

xfpd · March 31, 2024, 3:10am

Your code does this...

Configures LCD, figerprint scanner, rtc and pushbutton
loop() calls getFingerprintIDez()
getFingerprintIDez() gets a fingerprint, translates to text, checks for duplicates.
If no duplicates, getFingerprintDez() calls checkFingerData() and registers the fingerprint
Returns to loop().

The rest of the code is dependent on your pushbutton.

Is your pushbutton connected correctly to A3?

system · September 27, 2024, 3:11am

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Help with my Fingerprint Attendance System

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