I connected a RFID-RC522 to my RPi 4. It was working perfectly to read data until now. I don't know why but I cannot read anymore data now. Nothing changed in the hardware, neither the software. Maybe a configuration of the Pi changed, but I'm not sure.
I connected the pins like that:
Name Pin # Pin name SDA 24 GPIO8 SCK 23 GPIO11 MOSI 19 GPIO10 MISO 21 GPIO9 IRQ None None GND Any Any Ground RST 22 GPIO25 3.3V 1 3V3
Here is my code (I also tried with
import RPi.GPIO as GPIO from mfrc522 import SimpleMFRC522 reader = SimpleMFRC522() print("Wait RFID tag...") try: id, text = reader.read() print(id) print(text) finally: GPIO.cleanup()
Nothing happens now, the code is waiting even if I put a tag front of the reader. I don't know what I can check to see if everything is well configured. I already went to
raspi-config to enable SPI. I don't understand why it suddenly stopped to work.
Thanks in advance for your help.