search

mxgxw / MFRC522-python

A small class to interface with the NFC reader Module MFRC522
GNU Lesser General Public License v3.0
521 stars 419 forks source link

Error when running the python Code to read RFID tag #82

Open priyesh1112 opened 4 years ago

priyesh1112 commented 4 years ago

Welcome to the MFRC522 data read example Press Ctrl-C to stop. Traceback (most recent call last): File "Read.py", line 51, in (status, TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL) File "/home/pi/MFRC522.py", line 243, in MFRC522_Request (status, backData, backBits) = self.MFRC522_ToCard(self.PCD_TRANSCEIVE, TagType) TypeError: 'NoneType' object is not iterable

Could anyone please help in this matter? I am finding it troublesome and so would be glad if someone could sort this issue.

Thanks and Regards

aleexolsson commented 2 years ago

Hi! I suppose the problem is that the code doesn't want to read a card at all, I think I have a solution for that:

git clone https://github.com/pimylifeup/MFRC522-python.git

cd MFRC522-python

sudo python3 setup.py install

then go back a directory, create a new one, and in there, create a file, for example Read.py, and in it, paste this code:

`from time import sleep import sys from mfrc522 import SimpleMFRC522 reader = SimpleMFRC522()

try: while True: print("Hold a card or tag near the reader") id, text = reader.read() print("ID: %s\nText: %s" % (id, text)) sleep(3) except KeyboardInterrupt: GPIO.cleanup() raise` This should work.