【物联网】读取校园卡ID号 实验截图 代码 #include <RFID.h> #include <SPI.h>
RFID rfid(10,5); unsigned char RC_size; unsigned char blockAddr; //选择操作的块地址0～63 unsigned char i,tmp; unsigned char status; unsigned char str[MAX_LEN];
String RFID_readcardnum() {
rfid.readCardSerial(); String stringserNum=String(rfid.serNum[0], HEX)+String(rfid.serNum[1], HEX)+String(rfid.serNum[2], HEX)+String(rfid.serNum[3], HEX)+String(rfid.serNum[4], HEX); //选卡，返回卡容量（锁定卡片，防止多次读写） rfid.selectTag(rfid.serNum); return stringserNum; }
//4字节卡序列号，第5字节为校验字节 //新扇区A密码，16个扇区，每个扇区密码6Byte unsigned char sectorNewKeyA[16][16] = { {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xff,0x07,0x80,0x69, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},}; unsigned char serNum[5]; //写卡数据 //原扇区A密码，16个扇区，每个扇区密码6Byte unsigned char sectorKeyA[16][16] = { {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},};
void setup(){ Serial.begin(9600); SPI.begin(); rfid.init(); Serial.begin(9600); }
void loop(){ if ( rfid.isCard() ) { Serial.println(RFID_readcardnum()); }
}
