Development v12

Warning - Product Update

All the resources present on this section belong to Waspmote v12, Waspmote Plug & Sense! v12 and Meshlium v3.8.

If you have a Waspmote v15, Waspmote Plug & Sense! v15 or Meshlium v4.0 please go to the new Development Section.

Check what is your version and what are the differences between the old and the new one in this document.

» RFID1356 06: Single Cards Counter

This sketch counts the number of times a particular card has been read. It reads a card and compares if it is thepreviously defined one.

Required Materials

1 x Waspmote
1 x Battery
1 x Coin cell
1 x RFID 13.56MHz board
1 x RFID 13.56MHz antenna
1 x RFID Tag


- Remember to connect the battery to Waspmote for proper operation.
- Don't write address 0, 3, 7, 11, 15, ... if you are not an advanced user. You could leave your tag unaccessible.
- Address 0 contains the IC manufacturer data. This block has read-only access.
- Address 3, 7, 11 contains the secret keys A and B. Writing in them will change access keys and conditions.
- This example can be executed in Waspmote v12 and Waspmote v15


 *  ------ [RFID1356_06] RFID/NFC Single Card Counter --------
 *  Explanation:This sketch counts the number of times a particular
 *  card has been read. It reads a card and compares if it is the
 *  previously defined one.
 *  Copyright (C) 2015 Libelium Comunicaciones Distribuidas S.L.
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  GNU General Public License for more details.
 *  You should have received a copy of the GNU General Public License
 *  along with this program. If not, see <>.
 *  Version:                0.2
 *  Design:                 David Gascón
 *  Implementation:         Ahmad Saad, Javier Solobera 

#include <WaspRFID13.h>  

// stores the status of the executed command:
uint8_t state;

// little buffer for the ATQ-A (answer to request):
ATQ ans;

// stores the UID (unique identifier) of a card:
UIdentifier UID;

// EDIT: UID of the card that we have:
UIdentifier myCard = {
  0xFA, 0xC8, 0x2E, 0x40};

// for storing the hits:
int hits = 0;

void setup()
  USB.println(F("RFID_06 Example"));

  //Swithcs ON the module and asign the socket
  USB.println(F("RFID/NFC @ 13.56 MHz module started")); 

void loop()

  // 1. Init the RFID reader 
  state = RFID13.init(UID, ans);

  if (state == 1)
    USB.print(F("\r\n Request error - Card not found"));
    USB.print(F("\r\n Request | Answer: "));
    RFID13.print(ans, 2); // show the ATQ (answer to request) 

    USB.print(F(" UID: "));   
    RFID13.print(UID, 4); // show the UID 

    if (state == 0)  // if so, we can be sure that we read correctly one UID
      // 2. Compare UID from card with myCard to count hits
      if (RFID13.equalUIDs(myCard, UID) == 0) 
      { // if so, this is OUR card
        USB.print(F("\r\n  Card identified. Access granted. "));
        hits++; // increment the hit counter

      { // the read card is not OUR card
        USB.print(F("\r\n  ** Card not valid. Access denied. "));
        for (int i=0; i<10; i++) // blink the LED fast to show not-OK
    {  // if state is not 0, then the card was not properly read   
      USB.print(F("\r\n  ** Card not properly read. Please retry. "));

      for (int i=0; i<10; i++) // blink the LED fast to show not-OK

  USB.print(F("\r\n  Number of hits: ")); // show the accumulated hits

  delay(500); // wait a half second in each loop


Request | Answer: 0 4

AnticollSelect: 0 | Answer: FA C8 2E 40

Card identified. Access granted.
Number of hits: 1

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