pcdhalt.c

RC500的C库函数

#include<reg52.h>
#include<rc500.h>

char PcdHalt(void)
{
    char status=MI_OK;
    idata struct TranSciveBuffer{uchar MfCommand;
                                 uchar MfLength;
                                 uchar MfData[2];
                                }MfComData;
    struct TranSciveBuffer *pi;
    pi=&MfComData;

    PcdSetTmo(106);
    MfComData.MfCommand=PCD_TRANSCEIVE;
    MfComData.MfLength=2;
    MfComData.MfData[0]=PICC_HALT;
    MfComData.MfData[1]=0;

    status=PcdComTransceive(pi);
    if (status)
    {
        if(status==MI_NOTAGERR||status==MI_ACCESSTIMEOUT)
        status = MI_OK;
    }
    WriteRC(RegCommand,PCD_IDLE);
    return status;
}