pcdreadee2.c

RC500的C库函数

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

extern char PcdReadE2(uint startaddr,uchar length,uchar *readdata)
{
    char status;
    uchar i;
    idata struct TranSciveBuffer{uchar MfCommand;
                                 uchar MfLength;
                                 uchar MfData[16];
                                }MfComData;
    struct TranSciveBuffer *pi;
    pi=&MfComData;

    MfComData.MfCommand=PCD_READE2;
    MfComData.MfLength=3;
    MfComData.MfData[0]=startaddr&0xff;
    MfComData.MfData[1]=(startaddr>>8)&0xff;
    MfComData.MfData[2]=length;
    status=PcdComTransceive(pi);

    if(status==MI_OK)
    {
        for(i=0;i<length;i++)
        {
            *(readdata+i)=MfComData.MfData[i];
        }
    }
    return status;
}