I had a hard time configuring the Arduino Due and the Mifare RC 522. I tried using the Arduino UNO from this website Addicore RFID Quick Start Guide for Arduino (pdf) and it works. But when I change to Arduino Due, it wont. I tried using the ICSP headers and SPI headers and still wont work. I checked followed the program and the only declared pins are for RESET and SDA.
Can somebody help me?