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各位大神，最近在調(diào)試RC523讀取B類卡的程序，調(diào)試不通，那位大神能指點(diǎn)一下不勝感激！
以下是RC523寄存器配置：
RC522_Write_Register(MODEREG,0x3D);
RC522_Write_Register(TRELOADREGL,30);
RC522_Write_Register(TRELOADREGH,00);
RC522_Write_Register(TMODEREG,0x8D);
RC522_Write_Register(TPRESCALERREG,0x3E);
RC522_Write_Register(TXAUTOREG, 0x00);
RC522_Write_Register(CONTROLREG, 0x10);
RC522_Write_Register(TXMODEREG, 0x03);
RC522_Write_Register(RXMODEREG, 0x03);
RC522_Write_Register(RFU1E, 0x03);
RC522_Write_Register(DEMODREG, 0x4D);
RC522_Write_Register(GSNREG, 0xFF);
RC522_Write_Register(CWGSCFGREG, 0x3F);
RC522_Write_Register(MODGSCFGREG, 0x18);
RC522_Write_Register(RXTHRESHOLDREG, 0x4D);
RC522_Write_Register(MODWIDTHREG,0x68);
以下是尋卡指令：
s8 RC523_RequestTypeB(void)
{
u8 status=RC522_ERR;
u16 backlen;
u8 buf[16] = {0};
buf[0] = 0x05;
buf[1] = 0x00;
buf[2] = 0x00;
buf[3] = 0x71;
buf[4] = 0xFF;
if(RC522_Communication(PCD_TRANSCEIVE, buf, 5, buf, &backlen)==RC522_OK)
{
if(backlen==0x60)
status =RC522_OK;
else if(buf[0]==0x6d)
{
status =RC522_NOTAGERR;
}
else
status =RC522_ERR;
}
return status;
}
帶不帶校驗(yàn)，尋卡都沒反映
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