Forum Replies Created

  • Re: Reply To: Read Apple wallet NFC pass with PN5180

    21. December 2018 at 8:14
    in reply to: Read Apple wallet NFC pass with PN5180
    Hi Richard,
    Thank you for your response. I’m for sure interrested in quick demo, I will fill the form. Have a nice day!
    Jan
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    Re: Reply To: Mifare Classic MAD1 CRC8 Generation

    18. September 2018 at 11:11
    in reply to: Mifare Classic MAD1 CRC8 Generation
    It looks that everything within angle brackets gets cut, so I will use normal brackets instead to declare crc8 variable from boost::crc_optimal template (I hope it will work finally :-) )

    // init vector defined in MAD appnote is 0xE3. This didn't work, but bit-swapped value 0xC7 works
    boost::crc_optimal(8, 0x1D, 0xC7, 0, false, false) crc8;
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    Re: Reply To: Mifare Classic MAD1 CRC8 Generation

    18. September 2018 at 10:14
    in reply to: Mifare Classic MAD1 CRC8 Generation
    The most important part in the previous post was cut (boost::crc_optimal), so I will try to post that line again without marking it as code (no idea how could I edit the post):

    // init vector defined in MAD appnote is 0xE3. This didn't work, but bit-swapped value 0xC7 works
    boost::crc_optimal crc8;
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    Re: Reply To: Mifare Classic MAD1 CRC8 Generation

    18. September 2018 at 10:11
    in reply to: Mifare Classic MAD1 CRC8 Generation
    Hi, it's some time ago, but maybe it will help somebody anyway. I use this code to calculate MAD CRC:

    uint8_t CalculateCRC8_MAD(uint8_t *in_pData, uint8_t in_nDataLength)
    {
    if (in_pData == nullptr)
    return 0;

    if (in_nDataLength == 0)
    return 0;

    // init vector defined in MAD appnote is 0xE3. This didn't work, but bit-swapped value 0xC7 works
    boost::crc_optimal crc8;

    uint8_t *pStart = in_pData;
    uint8_t *pEnd = in_pData + in_nDataLength;

    crc8 = std::for_each(pStart, pEnd, crc8);

    return crc8.checksum();
    }


    Regards
    Jan
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