readcard.c

unsigned char * SReader_ReadCard(int *size)
{
  int cmdbuf[] = { 0x1b, 0x41, 0x00, 0x00, 0x2f, 0x75 };

	// clear buffer;
	int tmpsize = 0;
	unsigned char *tmpbuf = get_DataBuffer(&tmpsize);
	if (tmpbuf)
		free(tmpbuf);
	
	clearDataStatus();
	
	write_command(cmdbuf, 6);
	m_comStatus = COM_READCARD;

	*size = -1;
	_WAITTING_RESPONSE_(10000)
	
	int datasize = 0;
	unsigned char * buffer = processDataResult(&datasize);
	*size = datasize;
	  
	return buffer;
}