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Hello ! For my first project, I will make you discover aproject that I designed myself, and more in English !
This project is also available in French!
This project is a fairly simple project in all reality.
First, let's explain this project:
We are going to need 3 tags. => 1 who does not register, 1 register, then 1 who is Administrator, you will understand later...
All must display "PRESENTER" line 1 and "YOURCARD" line 2
The code is very simple for this case the.
Whenever a tag is detected the screen displays "SCAN INPROGRESS" Line 1 "UID DETECTION" Line2.
Explanation...
When the badge register as administrator is detected, thescreen always displays "SCAN IN PROGRESS" Line 1 and "DETECTIONUID" Line 2
Then "WELCOME" Line 1 and "ADMIN MODE"Line 2
Once the administrator mode is activated, the programproposes to pass the tag to configure.
Always the same routine, The screen asks to pass a tag.
Then once the badge pass, if it is listed in the variable, the program just delete it and if it is not already listed, it comes add it.
All this is listed in the final code!
During the identification of the new tag, the screendisplays its tag number and then indicates whether it will be added or deleted.
Once all the desired tags have been configured, you want toexit the administrator mode.
For this nothing more simple, we go back the admin tag.
The display shows "EXIT FROM" Line 1 and"ADMINISTRATOR MODE" Line 2
If a tag is not recognized, the display flashes "ACCESSREFUSER", the LED flashes and the BUZZER BUZ CONTINUES.
Once the program described I invite you to do the editingand inserted the program!
#include <EEPROM.h> //Library To read and write PICC's UIDs from/to EEPROM
#include <SPI.h> //Library RC522 Module uses SPI protocol
#include <MFRC522.h> //Library RC522 Module
#include <LiquidCrystal.h> //Library for LCD Display
boolean match = false; // initialize card match to false
boolean programMode = false; // initialize programming mode to false
int successRead; // Variable integer to keep if we have Successful Read from Reader
byte storedCard[4]; // Stores an ID read from EEPROM
byte readCard[4]; // Stores scanned ID read from RFID Module
byte masterCard[4]; // Stores master card's ID read from EEPROM
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
LiquidCrystal lcd(7, 6, 5, 4, 3, 2); //Initializing LCD PINS as (RS,EN,D4,D5,D6,D7)
void setup() {
// put your setup code here, to run once:
Serial.begin(9600); // Initialize serial communications with PC
lcd.begin(16, 2); //Initializing LCD 16x2
pinMode(8, OUTPUT); //LED and Buzzer PIN OUT
SPI.begin(); // MFRC522 Hardware uses SPI protocol
mfrc522.PCD_Init(); // Initialize MFRC522 Hardware
mfrc522.PCD_SetAntennaGain(mfrc522.RxGain_max);
if (EEPROM.read(1) != 1) { // Look EEPROM if Master Card defined, EEPROM address 1 holds if defined
Serial.println("No Master Card Defined"); //When no Master Card in Your EEROM (Serial Display)
Serial.println("Scan A PICC to Define as Master Card");
lcd.clear();
lcd.setCursor(0, 0);
lcd.println("SET MASTERCARD "); //When no Master Card in Your EEROM (LCD Display)
lcd.setCursor(0, 1);
lcd.println("SCAN A PICC....."); //Scan any RFID CARD to set Your Master Card in Your EEROM (LCD Display)
delay(1500);
do {
successRead = getID(); // sets successRead to 1 when we get read from reader otherwise 0
}
while (!successRead); //the program will not go further while you not get a successful read
for ( int j = 0; j < 4; j++ ) { // Loop 4 times
EEPROM.write( 2 + j, readCard[j] ); // Write scanned PICC's UID to EEPROM, start from address 3
}
EEPROM.write(1, 1); //Write to EEPROM we defined Master Card.
Serial.println("Master Card Defined");
}
Serial.println("Master Card's UID");
for ( int i = 0; i < 4; i++ ) { // Read Master Card's UID from EEPROM
masterCard[i] = EEPROM.read(2 + i); // Write it to masterCard
Serial.print(masterCard[i], HEX); //Master Card only view in serial
Serial.println("Waiting PICCs to bo scanned :)");
}
//WAITING TO SCAN THE RFID CARDS:
Serial.println("");
Serial.println("Waiting PICCs to bo scanned :)");
lcd.clear();
lcd.setCursor(0, 0);
lcd.println("WAITING ");
lcd.setCursor(0, 1);
lcd.println("FOR PICC.... ");
delay(1500);
}
void loop() {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" SWIPE");
lcd.setCursor(0, 1);
lcd.print(" YOUR CARD");
/*
if (digitalRead(BUTTON) == HIGH); //To Delete the EEROM USE the below command just run it
{
// for (int i = 0 ; i < EEPROM.length() ; i++) {
// EEPROM.write(i, 0);
// }
// } */
do {
successRead = getID(); // sets successRead to 1 when we get read from reader otherwise 0
if (programMode) {
// Program Mode cycles through RGB waiting to read a new card
}
else {
}}
while (!successRead); //the program will not go further while you not get a successful read
if (programMode) {
if ( isMaster(readCard) ) { //If master card scanned again exit program mode
Serial.println("This is Master Card");
Serial.println("Exiting Program Mode");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("EXITING FROM");
lcd.setCursor(0, 1);
lcd.print("MASTERCARD MODE");
delay(2000);
programMode = false;
return;
}
else {
if ( findID(readCard) ) { //If scanned card is known delete it
Serial.println("I know this PICC, so removing");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("AVAILABLE!");
lcd.setCursor(0, 1);
lcd.print("SO DELETING.....");
delay(5000);
deleteID(readCard);
Serial.println("-----------------------------");
}
else { // If scanned card is not known add it
Serial.println("I do not know this PICC, adding...");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Card no:");
lcd.setCursor(0, 1);
lcd.print(readCard[0], HEX);
lcd.print(readCard[1], HEX);
lcd.print(readCard[2], HEX);
lcd.print(readCard[3], HEX);
lcd.print(readCard[4], HEX);
delay(4000);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("NOT AVAILABLE");
lcd.setCursor(0, 1);
lcd.print("SO ADDING.......");
delay(5000);
writeID(readCard);
Serial.println("-----------------------------");
}} }
else {
if ( isMaster(readCard) ) { // If scanned card's ID matches Master Card's ID enter program mode
programMode = true;
Serial.println("Welcome to Mastercard Mode");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("WELCOME TO");
lcd.setCursor(0, 1);
lcd.print("MASTERCARD MODE");
delay(3000);
int count = EEPROM.read(0); // Read the first Byte of EEPROM that
Serial.print("I have "); // stores the number of ID's in EEPROM
Serial.print(count);
Serial.print(" record(s) on EEPROM");
Serial.println("");
Serial.println("Scan a PICC to ADD or REMOVE");
Serial.println("-----------------------------");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("SCAN PICC TO");
lcd.setCursor(0, 1);
lcd.print("ADD OR REMOVE...");
delay(2500);
}
else {
if ( findID(readCard) ) { // If not, see if the card is in the EEPROM
Serial.println("Acces Granted");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" CONGRATULATION");
lcd.setCursor(0, 1);
lcd.print(" ACCESS GRANTED");
digitalWrite(8, HIGH);
delay(1500);
digitalWrite(8, LOW);
lcd.clear();
}
else { // If not, show that the ID was not valid
Serial.println("Access Denied");
for (int abcd = 0; abcd < 6; abcd++)
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" SORRY");
lcd.setCursor(0, 1);
lcd.print(" ACCESS DENIED");
digitalWrite(8, HIGH);
delay(700);
digitalWrite(8, LOW);
lcd.clear();
lcd.print(" YOU'RE NOT ");
lcd.setCursor(0, 1);
lcd.print(" AUTHORIZED ");
delay(700);
}
lcd.clear();
}}}}
int getID() {
// Getting ready for Reading PICCs
if ( ! mfrc522.PICC_IsNewCardPresent()) { //If a new PICC placed to RFID reader continue
return 0;
}
if ( ! mfrc522.PICC_ReadCardSerial()) { //Since a PICC placed get Serial and continue
return 0;
}
// There are Mifare PICCs which have 4 byte or 7 byte UID care if you use 7 byte PICC
// I think we should assume every PICC as they have 4 byte UID
// Until we support 7 byte PICCs
Serial.println("Scanning PICC's UID.........");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("SCANNING");
lcd.setCursor(0, 1);
lcd.print("PICC's UID.....");
delay(2000);
for (int i = 0; i < 4; i++) { //
readCard[i] = mfrc522.uid.uidByte[i];
Serial.print(readCard[i], HEX);
}
Serial.println("");
mfrc522.PICC_HaltA(); // Stop reading
return 1;
}
boolean isMaster( byte test[] ) {
if ( checkTwo( test, masterCard ) )
return true;
else
return false;
}
boolean checkTwo ( byte a[], byte b[] ) {
if ( a[0] != NULL ) // Make sure there is something in the array first
match = true; // Assume they match at first
for ( int k = 0; k < 4; k++ ) { // Loop 4 times
if ( a[k] != b[k] ) // IF a != b then set match = false, one fails, all fail
match = false;
}
if ( match ) { // Check to see if if match is still true
return true; // Return true
}
else {
return false; // Return false
}}
boolean findID( byte find[] ) {
int count = EEPROM.read(0); // Read the first Byte of EEPROM that
for ( int i = 1; i <= count; i++ ) { // Loop once for each EEPROM entry
readID(i); // Read an ID from EEPROM, it is stored in storedCard[4]
if ( checkTwo( find, storedCard ) ) { // Check to see if the storedCard read from EEPROM
return true;
break; // Stop looking we found it
}
else { // If not, return false
}}
return false;
}
void readID( int number ) {
int start = (number * 4 ) + 2; // Figure out starting position
for ( int i = 0; i < 4; i++ ) { // Loop 4 times to get the 4 Bytes
storedCard[i] = EEPROM.read(start + i); // Assign values read from EEPROM to array
}
}
void deleteID( byte a[] ) {
if ( !findID( a ) ) { // Before we delete from the EEPROM, check to see if we have this card!
failedWrite(); // If not
}
else {
int num = EEPROM.read(0); // Get the numer of used spaces, position 0 stores the number of ID cards
int slot; // Figure out the slot number of the card
int start;// = ( num * 4 ) + 6; // Figure out where the next slot starts
int looping; // The number of times the loop repeats
int j;
int count = EEPROM.read(0); // Read the first Byte of EEPROM that stores number of cards
slot = findIDSLOT( a ); //Figure out the slot number of the card to delete
start = (slot * 4) + 2;
looping = ((num - slot) * 4);
num--; // Decrement the counter by one
EEPROM.write( 0, num ); // Write the new count to the counter
for ( j = 0; j < looping; j++ ) { // Loop the card shift times
EEPROM.write( start + j, EEPROM.read(start + 4 + j)); // Shift the array values to 4 places earlier in the EEPROM
}
for ( int k = 0; k < 4; k++ ) { //Shifting loop
EEPROM.write( start + j + k, 0);
}
successDelete();
}}
//For Failed to add the card:
void failedWrite() {
Serial.println("something wrong with Card");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("SOMETHING WRONG");
lcd.setCursor(0, 1);
lcd.print("WITH CARD");
delay(2000);
}
//For Sucessfully Deleted:
void successDelete() {
Serial.println("Succesfully removed");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("SUCCESFULLY");
lcd.setCursor(0, 1);
lcd.print("REMOVED");
delay(2000);
}
int findIDSLOT( byte find[] ) {
int count = EEPROM.read(0); // Read the first Byte of EEPROM that
for ( int i = 1; i <= count; i++ ) { // Loop once for each EEPROM entry
readID(i); // Read an ID from EEPROM, it is stored in storedCard[4]
if ( checkTwo( find, storedCard ) ) { // Check to see if the storedCard read from EEPROM
// is the same as the find[] ID card passed
return i; // The slot number of the card
break; // Stop looking we found it
}
}
}
//For Sucessfully Added:
void successWrite() {
Serial.println("Succesfully added");
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("SUCCESFULLY");
lcd.setCursor(0, 1);
lcd.print("ADDED");
delay(2000);
}
//For Adding card to EEROM:
void writeID( byte a[] ) {
if ( !findID( a ) ) { // Before we write to the EEPROM, check to see if we have seen this card before!
int num = EEPROM.read(0); // Get the numer of used spaces, position 0 stores the number of ID cards
int start = ( num * 4 ) + 6; // Figure out where the next slot starts
num++; // Increment the counter by one
EEPROM.write( 0, num ); // Write the new count to the counter
for ( int j = 0; j < 4; j++ ) { // Loop 4 times
EEPROM.write( start + j, a[j] ); // Write the array values to EEPROM in the right position
}
successWrite();
}
else {
failedWrite();
}
}
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