Arduino based Biometric Voting Machine voting system code

biometric_voting_system_code.in0

#include <Adafruit_GFX.h>
#include <MCUFRIEND_kbv.h>
#include "TouchScreen.h" 
#include<EEPROM.h>

#include <Adafruit_Fingerprint.h>
#if (defined(__AVR__) || defined(ESP8266)) && !defined(__AVR_ATmega2560__)
SoftwareSerial mySerial(2, 3);
#else
#define mySerial Serial1
#endif
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

int vote1, vote2, vote3;

#define  BLACK   0x0000
#define BLUE    0x001F
#define RED     0xF800
#define GREEN   0x07E0
#define CYAN    0x07FF
#define MAGENTA 0xF81F
#define YELLOW  0xFFE0
#define WHITE   0xFFFF
MCUFRIEND_kbv tft;

#define MINPRESSURE 10
#define MAXPRESSURE 1000
const int XP=6,XM=A2,YP=A1,YM=7; //320x480 ID=0x9486
const int TS_LEFT=931,TS_RT=168,TS_TOP=452,TS_BOT=191;
#define TS_MINX 125
#define TS_MINY 85
#define TS_MAXX 965
#define TS_MAXY 905
TouchScreen ts(XP, YP, XM, YM, 300);   //re-initialised after diagnose
TSPoint tp;                            //global point

void setup(void) {
  tft.reset();
  tft.begin(tft.readID());
  tft.setRotation(2);
  Serial.begin(9600); 
  Serial.println();
  Serial.print("reading id...");
  delay(500);
  Serial.println(tft.readID(), HEX);
  finger.begin(57600);
  delay(5);
  if (finger.verifyPassword()) {
    Serial.println("Found fingerprint sensor!");
    } 
  else {
    Serial.println("Did not find fingerprint sensor :(");
    while (1) { delay(1); }
  }
  tft.fillScreen(BLACK);
  Home();
  pinMode(13, OUTPUT);
  result();
}

bool fingerprintMatch(){
  screen1();
  delay(5000);
  uint8_t p = finger.getImage();
  if (p == FINGERPRINT_NOFINGER)  goto NoFinger; 
  else if (p == FINGERPRINT_OK) {
    p = finger.image2Tz();
    if (p != FINGERPRINT_OK)  goto NoMatch;
    p = finger.fingerFastSearch();
    if (p != FINGERPRINT_OK)  goto NoMatch;
    Serial.print("Verified ID:");
    Serial.println(finger.fingerID);
    delay(1500);
    return true; 
}
NoMatch: 
{
return false;
} 
NoFinger: 
{
Serial.println("No finger detected");
delay(1500);
return false;
}
}

void Home()
{
  tft.fillScreen(BLACK);
  tft.drawRoundRect(0, 0, 320, 480, 8, WHITE);   //Page border
  tft.setCursor(105, 5);
  tft.setTextSize(3);
  tft.setTextColor(CYAN);
  tft.print("Voting");
  tft.setCursor(97, 29);
  tft.print("Machine");

  tft.drawRoundRect(35, 70, 250, 50, 8, WHITE);  //Vote
  tft.fillRoundRect(35, 70, 250, 50, 8, YELLOW);
  tft.setTextSize(3);
  tft.setTextColor(WHITE);
  tft.setCursor(60, 82);
  tft.print("Candidate 1");

  tft.drawRoundRect(35, 160, 250, 50, 8, WHITE);  //Enroll
  tft.fillRoundRect(35, 160, 250, 50, 8, YELLOW);
  tft.setCursor(60, 172);
  tft.print("Candidate 2");

  tft.drawRoundRect(35, 250, 250, 50, 8, WHITE);
  tft.fillRoundRect(35, 250, 250, 50, 8, YELLOW);   //Result
  tft.setCursor(60, 262);
  tft.print("Candidate 3");
}

void screen1()
{
  tft.fillScreen(BLACK);
  tft.setTextSize(3);
  tft.setTextColor(WHITE);
  tft.setCursor(70, 190);
  tft.print("Please Scan");
  tft.setCursor(70, 240);
  tft.print("Your Finger");
  Serial.println("Please press finger");
}

void screen2()
{
  Serial.println("Finger not found");
  tft.fillScreen(BLACK);
  tft.setTextSize(3);
  tft.setCursor(70, 190);
  tft.print("Sorry You");
  tft.setCursor(70, 240);
  tft.print("Can't Vote");
  delay(3000);
  Home();
}

void loop(){
  digitalWrite(13, HIGH);
  digitalWrite(13, LOW);
  TSPoint p = ts.getPoint();
  // if sharing pins, you'll need to fix the directions of the touchscreen pins
  //pinMode(XP, OUTPUT);
  //pinMode(YM, OUTPUT);
  pinMode(XM, OUTPUT);
  pinMode(YP, OUTPUT);
  
  if (p.z > ts.pressureThreshhold)
    {
      p.x = map(p.x, TS_MAXX, TS_MINX, 0, 320);
      p.y = map(p.y, TS_MAXY, TS_MINY, 0, 240);
      //Serial.print("X:");  // I used this to get the accurate touch points for X and Y axis
      //Serial.print(p.x);
      //Serial.print("  ");
      //Serial.print("Y:");
      //Serial.println(p.y);
      
      if (p.x > 50 && p.x < 280 && p.y > 160 && p.y < 190  && p.z > MINPRESSURE && p.z < MAXPRESSURE)
        {
          Serial.println("Candidate 1");
          if(fingerprintMatch())
          {
            vote1++;
            EEPROM.write(0, vote1);
            tft.fillScreen(BLACK);
            tft.setCursor(70, 220);
            tft.print("Thank You");
            delay(3000);
            Home();  
          }
        else  
          {
            screen2();
          }
        }
        

      if (p.x > 50 && p.x < 280 && p.y > 110 && p.y < 140)
      {
          Serial.println("Candidate 2");
          if(fingerprintMatch())
          {
            vote2++;
            EEPROM.write(0, vote2);
            tft.fillScreen(BLACK);
            tft.setCursor(70, 220);
            tft.print("Thank You");
            delay(3000);
            Home();  
          }
        else  
          {
            screen2();
          }
        }
      
      if (p.x > 50 && p.x < 280 && p.y > 60 && p.y < 90)
        {
          Serial.println("Candidate 3");
          if(fingerprintMatch())
          {
            vote3++;
            EEPROM.write(0, vote3);
            tft.fillScreen(BLACK);
            tft.setCursor(70, 220);
            tft.print("Thank You");
            delay(3000);
            Home();  
          }
        else  
          {
            screen2();
          }
        }
  }
}


void result()
{ 
  vote1=EEPROM.read(0);
  vote2=EEPROM.read(1);
  vote3=EEPROM.read(2);
  int vote=vote1+vote2+vote3;
  Serial.println(vote1);
  Serial.println(vote2);
  Serial.println(vote3);
 if(vote)
           {
            if((vote1 > vote2 && vote1 > vote3))
            {
             Serial.print("Candidate 1 Wins");
             delay(2000);
            }
            else if(vote2 > vote1 && vote2 > vote3)
            {
             Serial.print("Candidate 2 Wins");
             delay(2000);
            }
            else if((vote3 > vote1 && vote3 > vote2))
            {
             Serial.print("Candidate 3 Wins");
             delay(2000);
            }
           else
           {
             Serial.print("Tie Up Or");
             Serial.print("No Result");
             delay(1000);
           }
          }      
           else 
           {
             Serial.print("No Voting....");
             delay(1000);
           }
  }