RC522 IIC驱动程序，可实现读卡和写卡功能，复旦卡或M1卡都可以，本人也试过读公交卡，可以读出序列号和卡类型。(RC522 IIC driver, can read card and write card function, Fudan card or M1 card can, I also tried to read the bus card, you can read the serial number and card type.)