Programmet som kjorer

Alt.ino

#include <Adafruit_NeoPixel.h>
#include <LiquidCrystal.h>
#include <SPI.h>//include the SPI bus library
#include <MFRC522.h>//include the RFID reader library


#define SS_PIN 10                          //slave select pin
#define RST_PIN 9                          //reset pin
String name;                              //ID of the RFID-card
int block=2;                              //this is the block number we will read.
byte readbackblock[18];                   //Array for reading a block (needs 18 bytes to read)
const int ledPin = 2;
const int NUMPIXELS = 24;
boolean feilRegistrering = false;


MFRC522 scanner(SS_PIN, RST_PIN);         // instatiate a MFRC522 reader object.
MFRC522::MIFARE_Key key;                  //create a MIFARE_Key struct named 'key', which will hold the card information
LiquidCrystal lcd(3, 4, 5, 6, 7, 8);      // initialize the library with the numbers of the interface pins
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, ledPin, NEO_GRB + NEO_KHZ800);

void setup() {
  Serial.begin(9600);                     // Initialize serial communications with the PC
  SPI.begin();                            // Init SPI bus
  pixels.begin();                         // This initializes the NeoPixel library. 
  scanner.PCD_Init();                     // Init MFRC522 card (in case you wonder what PCD means: proximity coupling device)
  lcd.begin(16, 2);                       // set up the LCD's number of columns and rows:
  
  Serial.println("CLEARDATA"); 
  Serial.println("LABEL,Tidspunkt,Navn");

  for (byte i = 0; i < 6; i++) {
    key.keyByte[i] = 0xFF;
  }

  lcd.print("Arduino er aktiv");          // Print a message to the LCD.
  delay(500);
  //Show default message
  lcd.setCursor(0, 0);
  lcd.print("Scan kort for aa");
  lcd.setCursor(0, 1);
  lcd.print("lagre oppmote");
}

void loop(){
  // Look for new cards 
	if (!scanner.PICC_IsNewCardPresent()) {   //if PICC_IsNewCardPresent returns 1, a new card has been found and we continue
		return;                                 //if it did not find a new card is returns a '0' and we return to the start of the loop
	}
 
	// Select one of the cards
	if (!scanner.PICC_ReadCardSerial()) {  
    return;
	}
   
   // Read the ID from the card
   if(!readBlock(block, readbackblock) == 1) {   //read the block back, check if error in scanning
      return;
   } 
  //Only promt a new student if no error. 
  if(!feilRegistrering) {
    registrerElev();
  }
  //Show default message
  lcd.setCursor(0, 0);
  lcd.print("Scan kort for aa");
  lcd.setCursor(0, 1);
  lcd.print("lagre oppmote");
  feilRegistrering = false;
}