Reader not reading certain Card about pi-rc522 HOT 3 OPEN

Hello,

I have this RFID Chip: RFID Kit RC522 mit Reader, Chip und Card 13,56MHz SPI https://www.amazon.de/AZDelivery-Reader ... B074S8MRQ7

(This reader is working fine on an Arduino project using RFID tags that are belonging to a key system!!)

I use this RFID chip on a python project with two libraries:

"MFRC522" https://github.com/mxgxw/MFRC522-python/
"RC-522" https://github.com/ondryaso/pi-rc522

MFRC522 detects all cards and other RFID tags that I use. And - if I change code a little bit - I can use 7 byte UIDs. So I could use MFRC522, but since it has a very high CPU load, I would rather use RC-522. (Yes, its known that you can reduce CPU load a little bit by adding a sleep. But it's not that good in CPU load as RC522 by ondryaso.=

So, if I use the RC522 project of ondryaso it reads only some of my tags (wired correctly). But it doesn't detect all the rfid tags I use. The code is different and something prevents it to read the key system tags...

Technically, the reader is definitely able to read all the tags. MFRC522 can read it and it works in an Arduino project.

I use it with a Raspberry Pi Model 3 B.

Thanks!

from pi-rc522.

I have something similar.
The NXP MIFARE Classic 1k (ISO14443-3A) working fine.
But NXP MIFARE DESFire (ISO 14443-4) i don't get the full UID. they have a 7 Byte UID.
Also these are not detected by wait_for_tag.

I just used:

   rdr = RFID()
   (error, data) = rdr.request()
   (error, uid) = rdr.anticoll()

from pi-rc522.

Hello,
same Problem here!

If I use MFRC522 from [https://github.com/mxgxw/MFRC522-python], i can read any card.
But if I use pi-rc522 due to heavy CPU load of MFRC522, unfortunately, some of my cards and chips don't get read.

Is there a way to fix the problem?
Thanks!

from pi-rc522.