private void SCardTransmit()
{
uint maxRecvDataLen = 256;
var recvBuffer = new byte[maxRecvDataLen + 2];
var sendBuffer = new byte[] { 0xff, 0xca, 0x00, 0x00, 0x00 }; // ← IDmを取得するコマンド
NfcApi.SCARD_IO_REQUEST ioRecv = new NfcApi.SCARD_IO_REQUEST();
ioRecv.cbPciLength = 255;
int pcbRecvLength = recvBuffer.Length;
int cbSendLength = sendBuffer.Length;
IntPtr handle = NfcApi.LoadLibrary("Winscard.dll");
IntPtr pci = NfcApi.GetProcAddress(handle, "g_rgSCardT1Pci");
NfcApi.FreeLibrary(handle);
uint ret = NfcApi.SCardTransmit(hCard, pci, sendBuffer, cbSendLength, ioRecv, recvBuffer, ref pcbRecvLength);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
throw new ApplicationException("NFCカードへの送信に失敗しました。code = " + ret);
}
// 受信データからIDmを抽出する
// recvBuffer = IDm + SW1 + SW2 (SW = StatusWord)
// SW1 = 0x90 (144) SW1 = 0x00 (0) で正常だが、ここでは見ていない
cardId = BitConverter.ToString(recvBuffer, 0, pcbRecvLength - 2);
}
int transmit(IntPtr hCard, byte[] sendBuffer, byte[] recvBuffer)
{
NfcApi.SCARD_IO_REQUEST ioRecv = new NfcApi.SCARD_IO_REQUEST();
ioRecv.cbPciLength = 255;
int pcbRecvLength = recvBuffer.Length;
int cbSendLength = sendBuffer.Length;
IntPtr SCARD_PCI_T1 = getPciT1();
uint ret = NfcApi.SCardTransmit(hCard, SCARD_PCI_T1, sendBuffer, cbSendLength, ioRecv, recvBuffer, ref pcbRecvLength);
if (ret != NfcConstant.SCARD_S_SUCCESS)
{
throw new ApplicationException("カードへの送信に失敗しました。code = " + ret);
}
return(pcbRecvLength); // 受信したバイト数(recvBufferに受け取ったバイト数)
}
