ACS ACR83 PINeasy Smart Card Reader - Manual (Page 48)

ACR83 – Reference Manual [email protected]
Version 1.05 www.acs.com.hk
Page 48 of 49
// Display LCD message to ACR83
char *msg = "Hello";
printf("Displaying message (%s) to LCD...\n", msg);
lReturn = SCardControl(hCard, IOCTL_SMARTCARD_DISPLAY_LCD_MESSAGE,
msg, strlen(msg),
bOutputBuffer, sizeof(bOutputBuffer), &dwNumBytesReturned);
if (lReturn != SCARD_S_SUCCESS)
printf("Error: SCardControl failed with error 0x%08x\n",
lReturn);
else
{
// Check status
if ((dwNumBytesReturned >= 2) &&
(bOutputBuffer[0] == 0) && (bOutputBuffer[1] == 0))
printf("The message is displayed successfully\n");
else
printf("Error: cannot display LCD message\n");
}
// Read key from ACR83
READ_KEY_OPTION readKeyOption;
char keyString[100];
DWORD len;
BYTE keyReturnCondition;
// Initialize read key option
readKeyOption.bTimeOut = 0;
readKeyOption.wPINMaxExtraDigit = 0x0408;
readKeyOption.bKeyReturnCondition = 0x01;
readKeyOption.bEchoLCDStartPosition = 0;
readKeyOption.bEchoLCDMode = 0x01;
printf("Reading key...\n");
lReturn = SCardControl(hCard, IOCTL_SMARTCARD_READ_KEY,
&readKeyOption, sizeof(READ_KEY_OPTION),
bOutputBuffer, sizeof(bOutputBuffer), &dwNumBytesReturned);
if (lReturn != SCARD_S_SUCCESS)
printf("Error: SCardControl failed with error 0x%08x\n",
lReturn);
else
{
// Check status
if ((dwNumBytesReturned >= 2) &&
(bOutputBuffer[0] == 0) && (bOutputBuffer[1] == 0))
{
if (dwNumBytesReturned >= 3)
keyReturnCondition = bOutputBuffer[2];
else
keyReturnCondition = 0;
len = 0;
if (dwNumBytesReturned >= 4)
{
len = dwNumBytesReturned - 3;
memcpy(keyString, bOutputBuffer + 3, len);
}
// Set the last NULL character
keyString[len] = '\0';