RC522寻卡，防冲突成功 ，选卡，验证密钥失败
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悬赏园豆：100
[已关闭问题]
关闭于 2014-03-10 20:04
RC522初始化，寻卡，防冲突都成功 ，但是选卡，验证密钥失败，不知道为什么
选卡时读CommIrqReg寄存器是0x65或0x45。下面是选卡程序
char PcdSelect(void)
{
char status;
unsigned char i;
unsigned int unLen;
unsigned char ucComMF522Buf[MAXRLEN];
ucComMF522Buf[0] = PICC_ANTICOLL1;
ucComMF522Buf[1] = 0x70;
ucComMF522Buf[6] = 0;
for (i=0; i<4; i++)
{
ucComMF522Buf[i+2] = UID[i];
ucComMF522Buf[6] ^= UID[i];
}
CalulateCRC(ucComMF522Buf,7,&ucComMF522Buf[7]);
ClearBitMask(Status2Reg,0x08);
status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,9,ucComMF522Buf,&unLen);
if ((status == MI_OK) && (unLen == 0x18))
{ status = MI_OK; }
else
{ status = MI_ERR; }
return status;
}
所有回答(1)
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问题解决了吗？
我想问一下您寻卡怎么做的，我为什么一直寻卡失败呢？