Published February 2, 2023

Implementation of Voting System using LPC2129

The main aim of this project is to implement a voiting system by interfacing with LCD and keypad(4x4 matix).

BeginnerFull instructions provided20 hours804

Implementation of Voting System using LPC2129

Things used in this project

Hardware components

NXP LPC2129

Software apps and online services

Microsoft Windows 10

Hand tools and fabrication machines

Arm KEIL - µVision IDE

Story

The main aim of this project is to implement a voiting system by interfacing with LCD and keypad(4x4 matix). In this project, there will be two functions as voter and admin. In voter function, list of parties can be displayed and voter should select particular party to vote.After voting, the data is stored in admin function of each party counts.

Project is implemented on LPC2129 kit using Keil uvision4 tool.

Flow chart:

Note/Disclaimer: The party options which are being used or displayed are not intentional, these are just easy selection for quick progress

Implementation of Voting System using LPC2129

-------Main Program using own created library------


#include<lpc21xx.h>
#include "phearderfile.h"
#include "plcdh.h"

#define ROWS (0xf<<17)
#define COLS (0xf<<21)
int k;

int main()
{

main_menu();
getCOLS();


}





#include<lpc21xx.h>
#include "phearderfile.h"
#include "plcdh.h"
  
extern int k,BJP=0,AAP=0,TDP=0,CPM=0;
  
int r,c;

//-----------LCD interfacting-------------------
	
	void lcd_cmd(char c)
		{
		IOPIN0 = (c<<15)|(IOPIN0 & ~(0xff<<15));
		IOCLR0 = RS;
		IOCLR0 = RW;
		IOSET0 = EN;
		delay(50);
		IOCLR0 = EN;
		}

	void lcd_init(void)
		{
		IODIR0 |=LCD;
		lcd_cmd(0x38);
		lcd_cmd(0x0E);
		lcd_cmd(0x01);
		lcd_cmd(0x80);
		}

	void lcd_data(char c)
		{
		//IOPIN0 = (data<<15);
		IOPIN0 = (c<<15)|(IOPIN0 & ~(0xff<<15));
		IOSET0 = RS;
		IOCLR0 = RW;
		IOSET0 = EN;
		delay(50);
		IOCLR0 = EN;
        }

	void lcd_num(unsigned int num)
		{
			if(num)
		   {
		   lcd_num(num/10);
		   lcd_data((num%10) + 48);
		   }
		}

	void lcd_str(char *str)
		{
		while(*str)
		
		lcd_data(*str++);
		
		}
	
	void lcd_str2(char *str)
	{
		int ct=0;
		lcd_cmd(0x01);
	 	lcd_cmd(0x80);
			while(*str)
			{
			lcd_data(*str++);
			ct=(ct+1)%32;
			if(ct==16)
			lcd_cmd(0xc0);
			if(ct==0)
			{
			lcd_cmd(0x01);
			lcd_cmd(0x80);
			} 
	        }
	}


//--------------------------------

	
//---------main_menu--------------

void main_menu()
	{
	lcd_init();
	lcd_str("Welcome");
	delay(2000);
	lcd_init();
	lcd_str("Press '1'->voter");
	lcd_cmd(0xC0);
	lcd_str("Press '2'->Admin");
	
	
	}
//---------Display1--------------


void display1(r,c)
		{
		if(r && c)
		{
		k=(r+(4*(c-1)));
		lcd_init();
		while(k!=13)
          {
					if (k==9)
					{
					lcd_str("voted for 'BJP'");
					delay(1000);
					BJP++;
					voter();
					}
					else if(k==10)
					{ 
					lcd_str("voted for 'TDP'");
					delay(1000);
					TDP++;
					voter();
					}
					else if(k==11)
					{ 
					lcd_str("voted for 'AAP'");
					delay(1000);
					AAP++;
					voter();
					}
					else if(k==12)
					{ 
					lcd_str("voted for 'CPM'");
					delay(1000);
					CPM++;
					voter();
					}
					else 
					{
					lcd_str("ERROR");
					delay(500);
					voter();
					}
			}
		  getCOLS(); 
	     }
	}	

 
//---------Display--------------

void display(r,c)
		{
		if(r && c)
		{
		k=(r+(4*(c-1)));
		lcd_init(); 
		
		if(k==1)
	      {
	        voter();

          }
   else if(k==2)
	      {
	        admin();
	      }	 
   else
	      {
	         main_menu();
	      }
	      }

}
//---------Get_col1--------------

int getCOLS1()
{
int r=c=0,val;
while(1)
{
IODIR1 |= ROWS;
IODIR1 &= ~(COLS);
									 	
val= (IOPIN1 & COLS);
val= val>>21;
switch(val)
{
case 0xe : c=1;
			r = getRow();
			break;
case 0xd : c=2;
			r = getRow();
			    
			break;
case 0xb : c=3;
			r = getRow();
			    
			break;
case 0x7 : c=4;
			r = getRow();
							
			break;
default : 	break;

			
}
display1(r,c);
}
}							
//---------Get_col--------------

int getCOLS()
{
int r=c=0,val;
while(1)
{
IODIR1 |= ROWS;
IODIR1 &= ~(COLS);
									 	
val= (IOPIN1 & COLS);
val= val>>21;
switch(val)
{
case 0xe : c=1;
			r = getRow();
			break;
case 0xd : c=2;
			r = getRow();
			    
			break;
case 0xb : c=3;
			r = getRow();
			    
			break;
case 0x7 : c=4;
			r = getRow();
							
			break;
default : 	break;

			
}
display(r,c);
}
}	

//---------Getrow--------------

int getRow()
{
 int val;
 IODIR1 =COLS;
 IOCLR1 =COLS;
 val=((IOPIN1 & ROWS)>>17);

switch(val)
{
case 0xe: return 1;
case 0xd: return 2;
case 0xb: return 3;
case 0x7: return 4;
default:  return  0;
}	
}

//---------Voter--------------
void voter()
{ 
int r=c=0;
lcd_init();
lcd_cmd(0x80);
lcd_str("1.BJP");
lcd_cmd(0x88);
lcd_str("2.TDP");
lcd_cmd(0xC0);
lcd_str("3.AAP");
lcd_cmd(0xC8);
lcd_str("4.CPM");
getCOLS1();
	
main_menu();
}
	
//---------ADMIN--------------

void admin()
{
lcd_init();
lcd_str("BJP :");
lcd_num(BJP);

lcd_cmd(0x88);
lcd_str("TDP :");
lcd_num(TDP);

lcd_cmd(0xC0);
lcd_str("AAP :");
lcd_num(AAP);

lcd_cmd(0xC8);
lcd_str("CPM :");
lcd_num(CPM);


delay(5000);


}

Credits

Bhanu

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