Abhishek Goyanka / Mbed 2 deprecated RFID_Attendance_System

This is a RFID based attendance system. The current program is only for two users but can be easily scaled for more users. Apart from FRDM-K64F board, we have MFRC522, Nokia 5110 LCD and SD card as external hardware. Each time a legitimate card is flashed the name of the person will be displayed on the LCD and his information will be stored in SD card if it's already not there. I have used existing libraries for all the harware. Here is the list. MFRC522 - By Martin Olejar SDFileSystem - By Andrew Lindsay NOKIA_5110 - By Chris Yan.

Dependencies:   MFRC522 NOKIA_5110 SDFileSystem mbed

Fork of FTF2014_lab4 by Freescale

main.cpp

Committer:
abhishekgoyanka
Date:
2015-05-02
Revision:
6:bc2ca526022f
Parent:
5:9f7e1200059e
Child:
7:caeacf521320

File content as of revision 6:bc2ca526022f:

#include "mbed.h"
#include "SDFileSystem.h"
#include "MFRC522.h"
#include <stdio.h>
#include "N5110.h"
// FRDM-K64F (Freescale) Pin for MFRC522 reset
#define MF_RESET    PTD0
FILE *fp;

DigitalOut LedGreen(LED2);

//Serial connection to PC for output
Serial pc(USBTX, USBRX); // serial comm on the FRDM board
//Serial uart(PTC17, PTC16);

//    VCC,SCE,RST,D/C,MOSI,SCLK,LED
//N5110 lcd(PTB2, PTC12, PTD0, PTB3, PTD6, PTD5, PTC12);
N5110 lcd(PTB2, PTC12, PTD0, PTB3, PTD6, PTD5, PTA0);

//MFRC522    RfChip   (SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, MF_RESET);
MFRC522    RfChip   (PTD2, PTD3, PTD1, PTE25, PTD0);

SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // MOSI, MISO, SCK, CS
char buffer[1024];   //UNKNOWN foe now
//uint8_t line[100];
uint8_t user[10];
uint8_t userlist[2][10];
char sam[16]="BC02CD022B02702";
char tempsam[16];
char abhishek[17]="6902BC029C021A02";
char abhishektemp[17];

int usercount=0;
//int found=0;
int flagSam=0;
int flagAbi=0; //checks if the card scanner is run for the first time

int main() 

{
    pc.printf("Initializing \n");
    //wait(2);
    
     // initialise display 
    lcd.init();
    
    // Init. RC522 Chip
    RfChip.PCD_Init();

   fp = fopen("/sd/attendance.txt", "r");
    if (fp != NULL) 
    {
        fclose(fp);
        remove("/sd/attendance.txt");
        pc.printf("Remove an existing file with the same name \n");
    }
   

while (true) 
{
    LedGreen = 1;

    // Look for new cards
    if ( ! RfChip.PICC_IsNewCardPresent())
    {
      RfChip.PCD_Init();
      wait_ms(300);
      continue;
    }

    // Select one of the cards
    if ( ! RfChip.PICC_ReadCardSerial())
    {
      wait_ms(200);
      continue;
    }

    LedGreen = 0;


    
    // Print Card UID
    printf("Card UID: ");
    for (uint8_t i = 0; i < RfChip.uid.size; i++)
    {
      printf("%X02", RfChip.uid.uidByte[i]);
     user[i]=RfChip.uid.uidByte[i];
    }
    printf("\n");



    sprintf(abhishektemp,"%X02%X02%X02%X02",user[0],user[1],user[2],user[3]);
    printf("Abitemp is %s",abhishektemp);
    
    if(strcmp(abhishektemp, abhishek)==0)
        { 
            printf("\n found abhishek\n");
            if (flagAbi==1)
                {
               printf("Already logged in!\n");
               lcd.printString("Abichek",0,0);
                }
            else if (flagAbi==0)
                {   
                    printf("\nWriting data to the sd card \n");
                    fp = fopen("/sd/attendance.txt", "a+");
                    if (fp == NULL) 
                        {
                            pc.printf("Unable to write the file \n");
                        } 
                    else 
                       {
                      //  while(!feof(fp)) {};   
                        fprintf(fp, "\nAbhishek PRESENT \n");
                        fclose(fp); 
                       }        
            flagAbi=1;
            lcd.printString("ABHISHEK",0,0);
               }
       }        
    else if(strcmp(abhishektemp,sam)==0)
        { 
            printf("\n found Sam\n");
            if (flagSam==1)
                {
               printf("Already logged in!\n");
               lcd.printString("Sam",0,0);
                }
            else if (flagSam==0)
                {
                    printf("\nWriting data to the sd card \n");
                    fp = fopen("/sd/attendance.txt", "a+");
                    if (fp == NULL) 
                        {
                            pc.printf("Unable to write the file \n");
                        } 
                    else 
                    {   
                     //   while(!feof(fp)) {}; 
                        fprintf(fp, "\nSAM PRESENT \n");
                        fclose(fp); 
                    }                       
            flagSam=1;
            printf("FlagSam=%i\n",flagSam);
            lcd.printString("Sam",0,0);
            
               }
        
        printf("Just after continue\n");    
        }      
        
    else
        {
            continue;
        }      
    
    printf("\nReading data from the SD card. \n");
    fp = fopen("/sd/attendance.txt", "r");
    if (fp != NULL) 
    {
        int size = fread(buffer, sizeof(char), 1024, fp);
        printf("Number of data read: %d, text from attendance.txt file: %s \n", size, buffer);
        fclose(fp);
    }
}
}