I bought a Mifare RC522 reader card on ebay a while ago.
Now i digged it out from the drawer and trying to use it.
I found rfid library that is said to be compatible for the RC522.
But there is something i dont understand.
The examples define the following pins:
- SPI SS
- SPI MOSI
- SPI MISO
- SPI SCK
But the card i have don’t have any SS pin.
It has SDA, SCK, MOS, MIS, NC, GND, RST and VCC
Is SDA same as SS ?
Or do I need another library?
Any help will be appreciated