Arduino:1.6.9 (Mac OS X), 开发板:"Arduino/Genuino Uno"
59: error: 'class RFID' has no member named 'isCard'
rfid.isCard();
^
61: error: 'class RFID' has no member named 'readCardSerial'
if (rfid.readCardSerial())
^
113: error: 'class RFID' has no member named 'readCardSerial'
if (!rfid.readCardSerial()){
^
exit status 1
'class RFID' has no member named 'isCard'