uint8_t MFRC522_Check(uint8_t * id)
{
uint8_t status;
status = MFRC522_Request(PICC_REQIDL, id); // Find cards, return card type
if (status == MI_OK) status = MFRC522_Anticoll(id); // Card detected. Anti-collision, return card serial number 4 bytes
MFRC522_Halt(); // Command card into hibernation
return status;
}
static int rc522_open(struct inode *inode, struct file *file)
{
uint8_t str[MAX_LEN];
uint8_t writeData[16]={1, 2, 3, 4, 0};
uint8_t i;
uint8_t status;
uint8_t size;
uint8_t blockAddr; //选择操作的块地址0～63
//扇区A密码，16个扇区，每个扇区密码6Byte
uint8_t sectorKeyA[16][16] = {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},};
printk("rc522_open\r\n");
SPI_Init();
MFRC522_Init();
while (1)
{
//寻卡，返回卡类型
status = MFRC522_Request(PICC_REQIDL, str);
if (status == MI_OK)
{
printk("%d \r\n", str[0]);
printk("%d \r\n", str[1]);
}
//防冲撞，返回卡的序列号 4字节
status = MFRC522_Anticoll(str);
memcpy(serNum, str, 5);
if (status == MI_OK)
{
printk("%d \r\n", serNum[0]);
printk("%d \r\n", serNum[1]);
printk("%d \r\n", serNum[2]);
printk("%d \r\n", serNum[3]);
printk("%d \r\n", serNum[4]);
}
//选卡，返回卡容量
size = MFRC522_SelectTag(serNum);
if (size != 0)
{
printk("size is %d", size);
}
//写
blockAddr = 1; //数据块
status = MFRC522_Auth(PICC_AUTHENT1A, blockAddr, sectorKeyA[blockAddr/4], serNum); //认证
if (status == MI_OK)
{
//写数据
status = MFRC522_Write(blockAddr, writeData);
}
//读
blockAddr = 1; //数据块
status = MFRC522_Auth(PICC_AUTHENT1A, blockAddr, sectorKeyA[blockAddr/4], serNum); //认证
if (status == MI_OK)
{
//读数据
status = MFRC522_Read(blockAddr, str);
if (status == MI_OK)
{
for (i=0; i<16; i++)
{
printk("%d ", str[i]);
}
}
}
MFRC522_Halt(); //命令卡片进入休眠状态*/
}
}
