Raspberry PI NFC Reader Control Code
NFC readers are used for reading data from RFID cards. These cards are radio frequency ID cards which can send data without battery. Electricity is generated in the cards from the electromagnetic field of the NFC reader. The cards can be used for authenticating persons or object. You can control both RC522 and PN532 NFC readers. You can learn more about RFID cards and NFC readers on the internet.
Before running the python codes you need to install the required library's.
Please download this setup file for the RC522 card reader
and this setup file for the PN532 card reader run the script
as superuser (sudo ./setup<module name>.sh
).
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Required hardware
- Raspberry PI
- NFC Reader(s)
Source code to install on controller
#!/usr/bin/env python import signal import time import sys from pirc522 import RFID run = True rdr = RFID() util = rdr.util() util.debug = True def end_read(signal, frame): global run print("\nCtrl+C captured, ending read.") run = False rdr.cleanup() sys.exit() signal.signal(signal.SIGINT, end_read) print("Starting") while run: (error, data) = rdr.request() if not error: print("\nDetected: " + format(data, "02x")) (error, uid) = rdr.anticoll() if not error: print("Card read UID: " + str(uid[0]) + "," + str(uid[1]) + "," + str(uid[2]) + "," + str(uid[3])) print("Setting tag") util.set_tag(uid) print("\nAuthorizing") # util.auth(rdr.auth_a, [0x12, 0x34, 0x56, 0x78, 0x96, 0x92]) util.auth(rdr.auth_b, [0x74, 0x00, 0x52, 0x35, 0x00, 0xFF]) print("\nReading") util.read_out(4) print("\nDeauthorizing") util.deauth() time.sleep(1)
Source code to install on controller
#!/usr/bin/env python import time from subprocess import call def main(): try: while True: call('nfc-poll') except: KeyboardInterrupt() if __name__ == "__main__": main()
More information
- How to setup a nfc reader on arduino mega
- How to setup a nfc reader on arduino nano
- How to setup a nfc reader on arduino uno
- How to setup a nfc reader on Ozeki matrix
- How to setup a nfc reader on Raspberry Pi
- NFC reader protocol for arduino
- How to control a nfc reader using chat messages
- NFC Desc
- NFC PN532 Arduino
- NFC RC522 Arduino
- NFC PN532 RC522 Arduino