m500auc.c

奥尔斯公司pxa270试验箱射频卡读写器相关资料

    char idata status = MI_CODEERR;

    // ************* Cmd Sequence **********************************
    ResetInfo(MInfo);
    SerBuffer[0] = PICC_HALT ;      // Halt command code
    SerBuffer[1] = 0x00;            // dummy address
    MInfo.nBytesToSend = 2;
    status = M500PcdCmd(PCD_TRANSCEIVE,
                       SerBuffer,
                       &MInfo);
    if (status)
    {
        // timeout error ==> no NAK received ==> OK
        if (status == MI_NOTAGERR || status == MI_ACCESSTIMEOUT)
        {
            status = MI_OK;
        }
    }
    //reset command register - no response from tag
    WriteIO(RegCommand,PCD_IDLE);
    return status;
}

///////////////////////////////////////////////////////////////////////
// Reset the MF RC500
///////////////////////////////////////////////////////////////////////
char M500PcdReset(void)
{
    char idata status = MI_OK;
    unsigned int idata timecnt=0;

    RC500RST = 0;
    delay_1ms(25);
    RC500RST = 1;
    delay_50us(200);
    RC500RST = 0;
    delay_50us(50);
    timecnt=1000;
    while ((ReadIO(RegCommand) & 0x3F) && timecnt--);
    if(!timecnt)
    {
        status = MI_RESETERR;
    }
    if (status == MI_OK)
    {
        //WriteIO(RegPage,0x80);
        if (ReadIO(RegCommand) != 0x00)
        {
            status = MI_INTERFACEERR;
        }
    }
    return status;
}

///////////////////////////////////////////////////////////////////////
// Configures the MF RC500  配置RC500内部寄存器函数
///////////////////////////////////////////////////////////////////////
char M500PcdConfig(void)
{
    char idata status;

    if ((status = M500PcdReset()) == MI_OK)
    {
        WriteIO(RegClockQControl,0x00);
        WriteIO(RegClockQControl,0x40);
        delay_50us(2);
        ClearBitMask(RegClockQControl,0x40);
        WriteIO(RegBitPhase,0xAD);
        WriteIO(RegRxThreshold,0xFF);
        WriteIO(RegRxControl2,0x01);
        WriteIO(RegFIFOLevel,0x1A);
        WriteIO(RegTimerControl,0x02);
        WriteIO(RegIRqPinConfig,0x03);
        M500PcdRfReset(1);
    }
    return status;
}

///////////////////////////////////////////////////////////////
// Key loading into the MF RC500's EEPROM
// key_type: 选择是keyA 还是kyeB
// sector: 选择扇区号(0~15)
// uncoded_keys: 6 Bytes Key value
///////////////////////////////////////////////////////////////
/*
char M500PcdLoadKeyE2(unsigned char key_type,
                       unsigned char sector,
                       unsigned char *uncoded_keys)
{
    signed char status = MI_OK;
    unsigned int e2addr = 0x80 + sector * 0x18;
    unsigned char coded_keys[12];

    if (key_type == PICC_AUTHENT1B)
    {
        e2addr += 12;           // key B offset
    }
    if ((status = M500HostCodeKey(uncoded_keys,coded_keys)) == MI_OK)
    {
        status = PcdWriteE2(e2addr,12,coded_keys);
    }
    return status;
}
*/
///////////////////////////////////////////////////////////////////////
// Write the MF RC500's EEPROM
// startaddr: RC500  EEPROM 起始地址
// length: 所写Byte 长度
// _data: 要写入的数据的存放起始地址
///////////////////////////////////////////////////////////////////////
/*
char PcdWriteE2(unsigned int startaddr,
                unsigned char length,
                unsigned char* _data)
{
    char status = MI_OK;
    ResetInfo(MInfo);
    SerBuffer[0] = startaddr & 0xFF;
    SerBuffer[1] = (startaddr >> 8) & 0xFF;
    memcpy(SerBuffer + 2,_data,length);

    MInfo.nBytesToSend   = length + 2;

    status = M500PcdCmd(PCD_WRITEE2,
                       SerBuffer,
                       &MInfo);
    return status;
}
*/

///////////////////////////////////////////////////////////////////////
// Select Command defined in ISO14443(MIFARE)
// Select the internal signal applied to pin MFOUT
// type: select MFOUT type( 0~7 )
///////////////////////////////////////////////////////////////////////
char M500PcdMfOutSelect(unsigned char type)
{
    WriteIO(RegMfOutSelect,type&0x7);
    return MI_OK;
}

///////////////////////////////////////////////////////////////////////
// Request Command defined in ISO14443(MIFARE)
// Request,Anticoll,Select,return CardType(2 bytes)+CardSerialNo(4 bytes)
// 寻卡，防冲突，选择卡    返回卡类型（2 bytes）+ 卡系列号(4 bytes)
// req_code: Requset All or Request Std( PICC_REQALL,PICC_REQSTD )
// atq: 16 bit answer to request( ATO)
///////////////////////////////////////////////////////////////////////
char M500PiccCommonRequest(unsigned char req_code,unsigned char *atq)
{
    char idata status = MI_OK;

    M500PcdSetTmo(3);
    WriteIO(RegChannelRedundancy,0x03);
    ClearBitMask(RegControl,0x08);
    WriteIO(RegBitFraming,0x07);
    SetBitMask(RegTxControl,0x03);
    ResetInfo(MInfo);
    SerBuffer[0] = req_code;
    MInfo.nBytesToSend = 1;

    status = M500PcdCmd(PCD_TRANSCEIVE,SerBuffer,&MInfo);
    if (status)
    {
        *atq = 0;
    }
    else
    {
        if (MInfo.nBitsReceived != 16)
        {
            *atq = 0;
            status = MI_BITCOUNTERR;
        }
        else
        {
            status = MI_OK;
            memcpy(atq,SerBuffer,2);
        }
    }
    return status;
}

///////////////////////////////////////////////////////////////////
// Cascaded Anti-Collision Command defined in ISO14443(MIFARE)
// 防冲突 读卡的系列号 MLastSelectedSnr
// bcnt: SNR-bits number( 0~32)
// snr: 4 Bytes serial number
///////////////////////////////////////////////////////////////////
char M500PiccCascAnticoll (unsigned char bcnt,unsigned char *snr)
{
    char idata status = MI_OK;
    char idata snr_in[4];
    char idata nbytes = 0;
    char idata nbits = 0;
    char idata complete = 0;
    char idata i        = 0;
    char idata byteOffset = 0;
    unsigned char dummyShift1;
    unsigned char dummyShift2;

    M500PcdSetTmo(106);
    memcpy(snr_in,snr,4);

    WriteIO(RegDecoderControl,0x28);
    ClearBitMask(RegControl,0x08);
    complete = 0;
    while (!complete && (status == MI_OK) )
    {
        ResetInfo(MInfo);
        WriteIO(RegChannelRedundancy,0x03);
        nbits = bcnt % 8;
        if(nbits)
        {
            WriteIO(RegBitFraming,nbits << 4 | nbits);
            nbytes = bcnt / 8 + 1;
            if (nbits == 7)
            {
                MInfo.cmd = PICC_ANTICOLL1;
                WriteIO(RegBitFraming,nbits);
            }
        }
        else
        {
            nbytes = bcnt / 8;
        }
        SerBuffer[0] = 0x93;
        SerBuffer[1] = 0x20 + ((bcnt/8) << 4) + nbits;

        for (i = 0; i < nbytes; i++)
        {
            SerBuffer[i + 2] = snr_in[i];
        }
        MInfo.nBytesToSend   = 2 + nbytes;

        status = M500PcdCmd(PCD_TRANSCEIVE,SerBuffer,&MInfo);
        if (nbits == 7)
        {
            dummyShift1 = 0x00;
            for (i = 0; i < MInfo.nBytesReceived; i++)
            {
                dummyShift2 = SerBuffer[i];
                SerBuffer[i] = (dummyShift1 >> (i+1)) | (SerBuffer[i] << (7-i));
                dummyShift1 = dummyShift2;
            }
            MInfo.nBitsReceived -= MInfo.nBytesReceived;
            if ( MInfo.collPos ) MInfo.collPos += 7 - (MInfo.collPos + 6) / 9;
        }
        if ( status == MI_OK || status == MI_COLLERR)
        {
            if ( MInfo.nBitsReceived != (40 - bcnt) )
            {
                status = MI_BITCOUNTERR;
            }
            else
            {
                byteOffset = 0;
                if( nbits != 0 )
                {
                    snr_in[nbytes - 1] = snr_in[nbytes - 1] | SerBuffer[0];
                    byteOffset = 1;
                }

                for ( i =0; i < (4 - nbytes); i++)
                {
                    snr_in[nbytes + i] = SerBuffer[i + byteOffset];
                }

                if (status != MI_COLLERR )
                {
                    dummyShift2 = snr_in[0] ^ snr_in[1] ^ snr_in[2] ^ snr_in[3];
                    dummyShift1 = SerBuffer[MInfo.nBytesReceived - 1];
                    if (dummyShift2 != dummyShift1)
                    {
                        status = MI_SERNRERR;
                    }
                    else
                    {
                        complete = 1;
                    }
                }
                else
                {
                    bcnt = bcnt + MInfo.collPos - nbits;
                    status = MI_OK;
                }
            }
        }
    }
    if (status == MI_OK)
    {
        memcpy(snr,snr_in,4);
    }
    else
    {
        memcpy(snr,"0000",4);
    }
    ClearBitMask(RegDecoderControl,0x20);

    return status;
}

//////////////////////////////////////////////////////////////////
// Cascaded Select command defined in ISO14443(MIFARE)
// 选择卡 Select Card
// snr: PICC's 4 Bytes serial number
// sak: 1 Byte select acknowledge
//////////////////////////////////////////////////////////////////
char M500PiccCascSelect(unsigned char *snr,unsigned char *sak)
{
    char idata status = MI_OK;

    M500PcdSetTmo(106);

    WriteIO(RegChannelRedundancy,0x0F);
    ClearBitMask(RegControl,0x08);
    ResetInfo(MInfo);
    SerBuffer[0] = 0x93;
    SerBuffer[1] = 0x70;

    memcpy(SerBuffer + 2,snr,4);
    SerBuffer[6] = SerBuffer[2] ^ SerBuffer[3] ^ SerBuffer[4] ^ SerBuffer[5];
    MInfo.nBytesToSend   = 7;
    status = M500PcdCmd(PCD_TRANSCEIVE,SerBuffer,&MInfo);

    *sak = 0;
    if (status == MI_OK)
    {
        if (MInfo.nBitsReceived != 8)
        {
            status = MI_BITCOUNTERR;
        }
        else
        {
	        *sak = SerBuffer[0];
        }
    }
    return status;
}

///////////////////////////////////////////////////////////////////////
// Key loading into the MF RC500's EEPROM
// 校验卡密码(E2)
// auth_mode:选择keyA 还是keyB
// snr: 4 Bytes,代表卡的序列号(Serial Number)
// key: 12 Bytes,认证的密码
// block: 所需要认证的块的地址
///////////////////////////////////////////////////////////////////////
/*
char M500PiccAuthE2( unsigned char auth_mode,unsigned char *snr,
                     unsigned char keynr,unsigned char block)

{
    char idata status = MI_OK;
    unsigned int e2addr = 0x80 + keynr * 0x18;
    //unsigned char *e2addrbuf = (unsigned char*)&e2addr;
    unsigned char *e2addrbuf;

    e2addrbuf = (unsigned char *)&e2addr;
    if (auth_mode == PICC_AUTHENT1B)
    {
        e2addr += 12;
    }
    FlushFIFO();
    ResetInfo(MInfo);

    memcpy(SerBuffer,e2addrbuf,2);
    SerBuffer[2] = SerBuffer[0];
    SerBuffer[0] = SerBuffer[1];
    SerBuffer[1] = SerBuffer[2];
    MInfo.nBytesToSend   = 2;
    if ((status=M500PcdCmd(PCD_LOADKEYE2,SerBuffer,&MInfo)) == MI_OK)
    {
        status = M500PiccAuthState(auth_mode,snr,block);  //11.9
    }
    return status;
}
*/
///////////////////////////////////////////////////////////////////////
// Authentication key coding
// uncoded: 6 Bytes uncoded authentication key
// coded: 12 Bytes coded authentication key
///////////////////////////////////////////////////////////////////////
/*
char M500HostCodeKey(  unsigned char *uncoded, unsigned char *coded)
{
    char idata status = MI_OK;
    unsigned char idata cnt = 0;
    unsigned char idata ln  = 0;
    unsigned char idata hn  = 0;
    for (cnt = 0; cnt < 6; cnt++)
    {
        ln = uncoded[cnt] & 0x0F;
        hn = uncoded[cnt] >> 4;
        coded[cnt * 2 + 1] = (~ln << 4) | ln;
        coded[cnt * 2 ] = (~hn << 4) | hn;
    }
    return MI_OK;
}
*/
///////////////////////////////////////////////////////////////////
// Authentication with direct key loading from the uC
// 直接校验密码
// auth_mode:选择keyA 还是keyB
// snr: 4 Bytes,代表卡的序列号(Serial Number)
// key: 12 Bytes,认证的密码
// block: 所需要认证的块的地址
//////////////////////////////////////////////////////////////////
/*
char M500PiccAuthKey(  unsigned char auth_mode,
                       unsigned char *snr,
                       unsigned char *keys,
                       unsigned char block)
{
    char idata status = MI_OK;
    //PcdSetTmo(2);
    FlushFIFO();
    ResetInfo(MInfo);
    memcpy(SerBuffer,keys,12);
    MInfo.nBytesToSend = 12;
    if ((status=M500PcdCmd(PCD_LOADKEY,SerBuffer,&MInfo)) == MI_OK)
    {