RGACD_Tag_Segment.txt

//RGACD Embedded System Team

#include <SPI.h>
#include <MFRC522.h>
 
#define RST_PIN         9           
#define SS_PIN          10 
#define Green           7 // for normal checking
 
MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 instance
 
void setup(){
  pinMode(Green,OUTPUT);
  Serial.begin(9600);                                           // Initialize serial communications with the PC
  SPI.begin();                                                  // Init SPI bus
  mfrc522.PCD_Init(); 
   
}
uint8_t buf[10]= {};
MFRC522::Uid id;
MFRC522::Uid id2;
bool is_card_present = false;
uint8_t control = 0x00;
void PrintHex(uint8_t *data, uint8_t length) // prints 8-bit data in hex with leading zeroes
{
     char tmp[16];
       for (int i=0; i<length; i++) { 
         sprintf(tmp, "%.2X",data[i]); 
         Serial.print(tmp); Serial.print(" ");
       }
}
 
//*****************************************************************************************//
 
void cpid(MFRC522::Uid *id){
  memset(id, 0, sizeof(MFRC522::Uid));
  memcpy(id->uidByte, mfrc522.uid.uidByte, mfrc522.uid.size);
  id->size = mfrc522.uid.size;
  id->sak = mfrc522.uid.sak;
}
 
void loop(){
  MFRC522::MIFARE_Key key;
  for (byte i = 0; i < 6; i++) key.keyByte[i] = 0xFF;
  MFRC522::StatusCode status;
 
    // Look for new objects
  if ( !mfrc522.PICC_IsNewCardPresent()) {
    return;
  }
  if ( !mfrc522.PICC_ReadCardSerial()) {
    return;
  }
 
    bool result = true;
  uint8_t buf_len=4;
  cpid(&id);
  Serial.print("");
  PrintHex(id.uidByte, id.size);
  Serial.println("");
 
    while(true){
digitalWrite(Green,HIGH);
    control=0;
    for(int i=0; i<3; i++){
      if(!mfrc522.PICC_IsNewCardPresent()){
        if(mfrc522.PICC_ReadCardSerial()){
          //Serial.print('a');
          control |= 0x16;
        }
        if(mfrc522.PICC_ReadCardSerial()){
          //Serial.print('b');
          control |= 0x16;
        }
        //Serial.print('c');
          control += 0x1;
      }
      //Serial.print('d');
      control += 0x4;
    }
     
    //Serial.println(control);
    if(control == 13 || control == 14){
      //object is still there
    } else {
      break;
    }
  }
  delay(500);
  mfrc522.PICC_HaltA();
  mfrc522.PCD_StopCrypto1();
   
}