Mifare 1K 分两块写入数据

Question

hello i'm working with APDU command for writting and reading a RFID card. I can read from the block num 2 and write a data of 16 bytes. but i have a problem in writting a longer data so how can i mange i have tried to write in two blocks but it doesnt work. this the way that i have implemented my code in the operation of writing

// write...
//


if (nres == SM_SUCCESS)// &&
//bAPDURes )
{
nlenrcv = sizeof(btRcv);
nlencmd = 0;

btCmd[nlencmd++] = 0xFF;                // CLA
btCmd[nlencmd++] = 0xD6;                // INS
btCmd[nlencmd++] = 0x00;                // P1, Mifare Block Number MSB, for mifare it is always 0x00
btCmd[nlencmd++] = 0x04;                // P2, Mifare Block Number LSB
btCmd[nlencmd++] = 32;              // Lc, Data Length
memcpy(btCmd + nlencmd, btWrite, 32);
nlencmd += 32;

nres = m_Smart.RFTransmit(DEV_INTERNALRF, nlencmd, btCmd, (DWORD*)&nlenrcv, btRcv);

Answer 1

You need to send each block separately. The Mifare Classic Write command will only write one block at once.

See Section 12.3 of the Card's Data sheet

So RFTransmit the write command for the first 16 bytes to the first block and RFTransmit the write command for the second 16 bytes to the next block.