Locker Security Sytem Using Humun Detect Sensor and OTP Throuhgt Bluettoth

Locker Security System Using Human Detect Sensor and OTP Through    Bluetooth

Protocols:   UART, RTC  

Brief:   We are providing locker security system using human detect sensor will detect a particular person will match then it will generate random OTP that send to whatever device connected to locker Bluetooth then whatever received OTP again enter correctly in particular time if any you do not enter or incorrect OTP   locker will not open and again new OTP generated after particular time(1 min).

Hardware Used: lpc2129 development board (ARM7), Bluetooth module HC-05, human detect sensor.

Software Used: Keil µVision 4, Flash Magic

code for the above project

              
#include<lpc21xx.h>
#include<string.h>
#include<stdlib.h>
  
void delay(int count)
{
int i,j;
for(i=0;i<count;i++)
{
for(j=0;j<3000;j++)
{
}
}
}

 void init_rtc()
{
 CCR=(1<<0);   // enable
 PREINT=456;   // crystel oscillator giving 15Mhz, but rtc will work at 32.768khz  to scle this we are using formula and geting this number 
 PREFRAC=25024;
 HOUR=12;
 ALHOUR=12;
 ALMIN=12;
 MIN=11;
 SEC=0;
}

int adc()
{
   int result;
 PINSEL1 |=(1<<24);   //pin configuration
 PINSEL1 &= ~(1<<25);
 ADCR=(1<<1) | (3<<8)| (1<<16) | (1<<21);  //adc configuration
 while(1)
 {
  while(!(ADDR & (1<<31))); //if addr bit 1 then
  result=ADDR & (0x3ff<<6); //read the result
  result=result>>6;   //then shift back
  delay(1000);
  break;
   }
   return result;
}

void uart_int(void)
{
 PINSEL0 |= (1<<0)|(1<<2);    // configuring the UART funtion
 PINSEL0 &= ~((1<<1)|(1<<3));
 U0LCR = (1<<0)|(1<<1)|(1<<7);  // configuring line control register(LCR),DLATCH
 U0DLM = 0;        // Loding value DLM and DLL
 U0DLL = 97;
 U0LCR = (1<<0)|(1<<1);     // disable the DLATCH register
}

char uart_rx (void)
 {
   while(!(U0LSR & (1<<0)));
   return (U0RBR);
 }

int uart_rx1(void)
{
while(!(U0LSR&(1<<0)));
return(U0RBR);
}
void uart_tx1(int c)
 {
  while(!(U0LSR & (1<<5)));
  U0THR = c;
 }

void uart_tx(char c)        
 {
  while(!(U0LSR & (1<<5)));
  U0THR = c;
 }
 void uart_tx_string(char *str)
  {
  while(*str)
  {
  uart_tx(*str);
  str++;
  }
  }
int main()
{
   char k ='a';
  char r;
  int i,count=0,result=1,h=1;
     uart_int();  
 g:
    // result=adc();
  init_rtc();  
     if(result==1)
  {
     k+=rand()%10;
     uart_tx(k);

            uart_tx_string("enter otp");
    while(((MIN==ALMIN))
 {    
                  c:
      if(count!=3)
      {
      while(h)
      {
                 for(i=0;i<1;i++)
              {
                    r=uart_rx();
                uart_tx(r);
  
            }
         h=0;
     }
      if(r==k)
     {
     uart_tx_string("opening door please wait");
     delay(2000);
     h=1;
     }
     }
     else
     {
     count++;
     goto c;
      }
    break;  
  }
  goto g;

 }