AS3955 datasheet(90/111 Pages) AMSCO

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[v1-01] 2015-Apr-29

AS3955 − Application Information

dllHeaderSize, rxBuffer.size - dllHeaderSize);

chainInSize += (rxBuffer.size - dllHeaderSize);

memcpy(rxBuffer.data + dllHeaderSize, chainInBuffer,

chainInSize);

rxBuffer.size = dllHeaderSize + chainInSize;

chainInSize = 0;

}

err = nfcTagAppProcessAPDU(dllHeaderSize);

if (txBuffer.size > l4Config.fsd)

{

//start chaining to reader

memcpy(chainOutBuffer, txBuffer.data + dllHeaderSize,

txBuffer.size - dllHeaderSize);

chainOutBufferSize = txBuffer.size - dllHeaderSize;

chainOutSize = 0;

txBuffer.data[0] |= ISO14443_4_PCB_I_CHAINING;

err = as3955TxNBytes(txBuffer.data, l4Config.fsd, 0,

AS3955_TX_FLAG_NONE);

state = L4_WAIT_FOR_ACK;

if (err == ERR_NONE)

{

chainOutSize += l4Config.fsd - dllHeaderSize;

}

else

{

err = as3955TxNBytes(txBuffer.data, txBuffer.size, 0,

AS3955_TX_FLAG_NONE);

as3955SetTxFrameState(as3955FrameTXed);

state = L4_IDLE;

}

rxBuffer.size = 0;

rxBuffer.state = as3955FrameIdle;

}

else

{

/* Repeat last buffer */

err = as3955TxNBytes(txBuffer.data, txBuffer.size, 0, AS3955_TX_FLAG_NONE);

}

else if (ISO14443_4_PCB_R == (pcb & ISO14443_4_PCB_R_MASK))

{

if ((pcb & 1) != isoDepCnt)

{

if (ISO14443_4_PCB_R_NAK_BIT & pcb)

AS3955 Datasheet(PDF) 90 Page - ams AG

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