You should check your mfrc522 chip if it's properly powered and the NRSTPD
pin is correctly set.
All your read requests return 0 so most likely the chip is in power-down
state (or not powered at all).
You can also check the soldering of your 522 chip. I have dealt with many
these chips and what I r
Hello Nathan, thank you for your answer.
My board bring up properly, it cannot start mfrc522 because the sensor is
returning 0x00 in mfrc522_getfwversion.
I used logic analyzer and the signals is ok, look image below:
[image: image.png]
Step by step I see exactly what happened in the debug consol
If I understand correctly, something is failing when trying to bring
up the RFID sensor?
Does the board start up if you remove support for the sensor?
Do you have oscilloscope or logic analyzer to verify signals are being
sent/received between microcontroller and sensor chip?
Do you have a debug
