project guidance for mini project on 8051 microcontroller by swapnil

[query]

can i get the project guidance from you to do a mini project on 8051 microcotroller

[Dexter]

i will try my best to help u

send the details

[Afnan Ali Khan]

can i get your guidence 4 using kail U version4

 

[Prathmesh A. Bhat]

Sir,i am working on my mini project of guidance system and i need your help

[Gopi.g]

Hi,

 

Mini project of  “Door security lock password.”

Components required: 2*16 LCD, micro controller AT89S52, 4*4 Keypad, 6vc dc motor and 5v power supply.

Software required: Keil 2v and flash memory programmable.

Write a programming code in Keil 2v software for Door security password lock: see below coding for your mini project.

 

//Program to make a simple code lock. The default password is 3907.

 

#include<reg51.h>

#define port P1

#define dataport P2

#define key P0

#define sec 100

sbit rs = port^0;

sbit rw = port^1;

sbit en = port^2;

 

sbit col1=key^4;

sbit col2=key^5;

sbit col3=key^6;

sbit col4=key^7;

sbit row1=key^0;

sbit row2=key^1;

sbit row3=key^2;

sbit row4=key^3;

sbit lock_output=P0^7;

 

int check=0;

int digit[4]={0,0,0,0};

int dig_one=3;

int dig_two=9;

int dig_three=0;

int dig_four=7;

int i,count=0;

 

void delay(unsigned int msec) //Time delay function

{

int i,j ;

for(i=0;i<msec;i++)

  for(j=0;j<1275;j++);

}

 

void lcd_cmd(unsigned char item) //Function to send command to LCD

{

dataport = item;

rs= 0;

rw=0;

en=1;

delay(1);

en=0;

return;

}

 

void lcd_data(unsigned char item) // Function to send data to LCD

{

dataport = item;

rs= 1;

rw=0;

en=1;

delay(1);

en=0;

return;

}

 

void lcd_data_string(unsigned char *str)  // Function to send string to LCD

{

int i=0;

while(str!=’’)

{

  lcd_data(str);

  i++;

  //delay(10);

}

return;

}

 

void lcd(unsigned char str[10])  // Function to send string to LCD

{

lcd_cmd(0x38);

lcd_cmd(0x0e);

lcd_data_string(str);

}

 

void ans()

{

if(check>3)

{

  lcd_cmd(0x01);

  lcd_cmd(0x82);

  lcd_data_string(” LOCK OPEN”);

  lock_output=1;

  delay(500);

}

else

{

  lcd_cmd(0x01);

  lcd_cmd(0x82);

  lcd_data_string(” WRONG PASSWORD”);

  lock_output=0;

  count++;

  delay(500);

}                   

}

 

void code_check() // Function to check password

{

if(i< )

{

  switch((i+1))

  {

   case 1: {

      if(dig_one==digit[0])

      {

       check=check+1;

      }

      break;

     }

 

   case 2: {

      if(dig_two==digit[1])

      {

       check=check+1;

      }

      break;

     }

    

   case 3: {

      if(dig_three==digit[2])

      {

       check=check+1;

      }

      break;

      }

    

   case 4: {

      if(dig_four==digit[3])

      {

       check=check+1;

      }

      break;

     }

  }

}

if(i=)

{

  ans();

}

}

 

 

void display(int a) //Display function

{

switch(a)

{ 

  case 1:{

    lcd_data(‘1’);

    delay(30);

    digit=1;

    code_check();

    break;

    }

  case 2:{

    lcd_data(‘2’);

    delay(30);

    digit=2;

    code_check(); 

    break;

    }

  case 3:{

    lcd_data(‘3’);

    delay(30);

    digit;

    code_check();

    break; 

    }

  case 4:{

    lcd_data(‘4’);

    delay(30);

    digit=4;

    code_check();

    break;

    }

  case 5:{

    lcd_data(‘5’);

    delay(30);

    digit=5;

    code_check();

    break;

    }

  case 6:{

    lcd_data(‘6’);

    delay(30);

    digit=6;

    code_check();

    break;

    }

  case 7:{

    lcd_data(‘7’);

    delay(30);

    digit=7;

    code_check();

    break;

    }

  case 8:{

    lcd_data(‘8’);

    delay(30);

    digit=8;

    code_check();

    break;

    }

  case 9:{

    lcd_data(‘9’);

    delay(30);

    digit=9;

    code_check();

    break;

    }

  case 0:{

    lcd_data(‘0’);

    delay(30);

    digit=0;

    code_check();

    break;

    }

}

}

 

void check_col1()

{

row1=row2=row3=row4=1;

row1=0;

if(col1==0)

display(1);

row1=1;

row2=0;

if(col1==0)

display(4);

row2=1;

row3=0;

if(col1==0)

display(7);

row3=1;

row4=0;

if(col1==0)

{

  row4=1;

}

}

 

void check_col2()

{

row1=row2=row3=row4=1;

row1=0;

if(col2==0)

display(2);

row1=1;

row2=0;

if(col2==0)

display(5);

row2=1;

row3=0;

if(col2==0)

display(;

row3=1;

row4=0;

if(col2==0)

display(0);

row4=1;

}

 

void check_col3()

{

row1=row2=row3=row4=1;

row1=0;

if(col3==0)

display(3);

row1=1;

row2=0;

if(col3==0)

display(6);

row2=1;

row3=0;

if(col3==0)

display(9);

row3=1;

row4=0;

if(col3==0)

{

  row4=1;

}

}

 

void main()

{

col1=col2=col3=1;

while(1)

{

  lcd_cmd(0x01);  //Clear LCD screen

  lock_output=0;

  lcd_cmd(0x82);   // Set cursor on position first of first line

  lcd(“ENTER PASSWORD”);

  check=0;

  row1=row2=row3=row4=0;

  while(col1==1 && col2==1 && col3==1);

  for(i=0;i<4;i++)

  {

   delay(100);

   lcd_cmd(0xc4+i);

   row1=row2=row3=row4=0;

   while(col1==1 && col2==1 && col3==1);

   row1=row2=row3=row4=0;

   if(col1==0)

   check_col1();

   else

    if(col2==0)

    check_col2();

    else

     if(col3==0)

     check_col3();

   if(count==4)

   {

   lcd_cmd(0x01);

   lcd_cmd(0x86);

   lcd(“SORRY”);

   lcd_cmd(0xc1);

   lcd(“NO MORE TRIALS”);

   while(1);

   }

  }   

}

}

 

 

 

 

 

If require any clarification send me. i will help you………………

 

Thanks.

[karthik Balu]

how to display decimal values on lcd display………………………by converting analog value to digital value and to decimal value……….

using piezoelectricsensors as input to adc….and interfacing with microcontroller AT89C51

[GAJENDRA TIWARI]

HELLO SIR, MY PROJECT NAME IS AUTOMATIC COLLEGE RING BELL. SO I WANT PROGRAMMING CODE FOR MICROCONTROLLER AT89CS51

[Milind Gargade]

Plaee give me project guidence for project " Automatic College Bell using 8051"

and please give C code for " Automatic College Bell using 8051" project.

please

[Author]

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