diff --git a/src/rs232.c b/src/rs232.c
new file mode 100644
index 0000000..bbe9a0e
--- /dev/null
+++ b/src/rs232.c
@@ -0,0 +1,304 @@
+/*
+
+Public platform independent Near Field Communication (NFC) library
+Copyright (C) 2009, Roel Verdult
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+ Based on rs232-code written by Teunis van Beelen
+ available: http://www.teuniz.net/RS-232/index.html
+
+*/
+
+
+#include "rs232.h"
+
+#ifndef _WIN32 /* Linux */
+
+typedef struct termios term_info;
+typedef struct {
+ int fd; // Serial port file descriptor
+ term_info tiOld; // Terminal info before using the port
+ term_info tiNew; // Terminal info during the transaction
+} serial_port_unix;
+
+// Set time-out on 30 miliseconds
+struct timeval tv = {
+ .tv_sec = 0, // No seconds
+ .tv_usec = 30000 // 30,000 micro seconds
+};
+
+// Work-around to claim rs232 interface using the c_iflag (software input processing) from the termios struct
+#define CCLAIMED 0x80000000
+
+serial_port rs232_open(const char* pcPortName)
+{
+ serial_port_unix* sp = malloc(sizeof(serial_port_unix));
+
+ if (sp == 0) return INVALID_SERIAL_PORT;
+
+ sp->fd = open(pcPortName, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK);
+ if(sp->fd == -1)
+ {
+ rs232_close(sp);
+ return INVALID_SERIAL_PORT;
+ }
+
+ if(tcgetattr(sp->fd,&sp->tiOld) == -1)
+ {
+ rs232_close(sp);
+ return INVALID_SERIAL_PORT;
+ }
+
+ // Make sure the port is not claimed already
+ if (sp->tiOld.c_iflag & CCLAIMED)
+ {
+ rs232_close(sp);
+ return CLAIMED_SERIAL_PORT;
+ }
+
+ // Copy the old terminal info struct
+ sp->tiNew = sp->tiOld;
+ sp->tiNew.c_cflag = CS8 | CLOCAL | CREAD;
+ sp->tiNew.c_iflag = CCLAIMED | IGNPAR;
+ sp->tiNew.c_oflag = 0;
+ sp->tiNew.c_lflag = 0;
+ sp->tiNew.c_cc[VMIN] = 0; // block untill n bytes are received
+ sp->tiNew.c_cc[VTIME] = 0; // block untill a timer expires (n * 100 mSec.)
+ if(tcsetattr(sp->fd,TCSANOW,&sp->tiNew) == -1)
+ {
+ rs232_close(sp);
+ return INVALID_SERIAL_PORT;
+ }
+ return sp;
+}
+
+void rs232_close(const serial_port sp)
+{
+ tcsetattr(((serial_port_unix*)sp)->fd,TCSANOW,&((serial_port_unix*)sp)->tiOld);
+ close(((serial_port_unix*)sp)->fd);
+ free(sp);
+}
+
+bool rs232_cts(const serial_port sp)
+{
+ ulong ulStatus;
+ if (ioctl(((serial_port_unix*)sp)->fd,TIOCMGET,&ulStatus) < 0) return false;
+ return (ulStatus & TIOCM_CTS);
+}
+
+bool rs232_receive(const serial_port sp, byte* pbtRx, ui32* puiRxLen)
+{
+ int iResult;
+ ui32 uiCount = 0;
+ fd_set rfds;
+
+ while (true)
+ {
+ // Reset file descriptor
+ FD_ZERO(&rfds);
+ FD_SET(((serial_port_unix*)sp)->fd,&rfds);
+ iResult = select(((serial_port_unix*)sp)->fd+1, &rfds, NULL, NULL, &tv);
+
+ // Read error
+ if (iResult < 0) return false;
+
+ // Read time-out
+ if (iResult == 0)
+ {
+ // Test if we at least have received something
+ if (uiCount == 0) return false;
+ // Store the received byte count and return succesful
+ *puiRxLen = uiCount;
+ return true;
+ }
+
+ // There is something available, read the data
+ uiCount += read(((serial_port_unix*)sp)->fd,pbtRx+uiCount,*puiRxLen-uiCount);
+ }
+}
+
+bool rs232_send(const serial_port sp, const byte* pbtTx, const ui32 uiTxLen)
+{
+ int iResult;
+ iResult = write(((serial_port_unix*)sp)->fd,pbtTx,uiTxLen);
+ return (iResult >= 0);
+}
+
+#else /* windows */
+
+
+HANDLE Cport[16];
+
+
+char comports[16][10]={"\\\\.\\COM1", "\\\\.\\COM2", "\\\\.\\COM3", "\\\\.\\COM4",
+ "\\\\.\\COM5", "\\\\.\\COM6", "\\\\.\\COM7", "\\\\.\\COM8",
+ "\\\\.\\COM9", "\\\\.\\COM10", "\\\\.\\COM11", "\\\\.\\COM12",
+ "\\\\.\\COM13", "\\\\.\\COM14", "\\\\.\\COM15", "\\\\.\\COM16"};
+
+char baudr[64];
+
+
+int OpenComport(int comport_number, int baudrate)
+{
+ if((comport_number>15)||(comport_number<0))
+ {
+ printf("illegal comport number\n");
+ return(1);
+ }
+
+ switch(baudrate)
+ {
+ sscanf(baudr,"baud=%d data=8 parity=N stop=1",baudrate);
+/*
+ case 110 : strcpy(baudr, "baud=110 data=8 parity=N stop=1");
+ break;
+ case 300 : strcpy(baudr, "baud=300 data=8 parity=N stop=1");
+ break;
+ case 600 : strcpy(baudr, "baud=600 data=8 parity=N stop=1");
+ break;
+ case 1200 : strcpy(baudr, "baud=1200 data=8 parity=N stop=1");
+ break;
+ case 2400 : strcpy(baudr, "baud=2400 data=8 parity=N stop=1");
+ break;
+ case 4800 : strcpy(baudr, "baud=4800 data=8 parity=N stop=1");
+ break;
+ case 9600 : strcpy(baudr, "baud=9600 data=8 parity=N stop=1");
+ break;
+ case 19200 : strcpy(baudr, "baud=19200 data=8 parity=N stop=1");
+ break;
+ case 38400 : strcpy(baudr, "baud=38400 data=8 parity=N stop=1");
+ break;
+ case 57600 : strcpy(baudr, "baud=57600 data=8 parity=N stop=1");
+ break;
+ case 115200 : strcpy(baudr, "baud=115200 data=8 parity=N stop=1");
+ break;
+ case 128000 : strcpy(baudr, "baud=128000 data=8 parity=N stop=1");
+ break;
+ case 256000 : strcpy(baudr, "baud=256000 data=8 parity=N stop=1");
+ break;
+ default : printf("invalid baudrate\n");
+ return(1);
+ break;
+*/
+ }
+
+ Cport[comport_number] = CreateFileA(comports[comport_number],
+ GENERIC_READ|GENERIC_WRITE,
+ 0, /* no share */
+ NULL, /* no security */
+ OPEN_EXISTING,
+ 0, /* no threads */
+ NULL); /* no templates */
+
+ if(Cport[comport_number]==INVALID_HANDLE_VALUE)
+ {
+ printf("unable to open comport\n");
+ return(1);
+ }
+
+ DCB port_settings;
+ memset(&port_settings, 0, sizeof(port_settings)); /* clear the new struct */
+ port_settings.DCBlength = sizeof(port_settings);
+
+ if(!BuildCommDCBA(baudr, &port_settings))
+ {
+ printf("unable to set comport dcb settings\n");
+ CloseHandle(Cport[comport_number]);
+ return(1);
+ }
+
+ if(!SetCommState(Cport[comport_number], &port_settings))
+ {
+ printf("unable to set comport cfg settings\n");
+ CloseHandle(Cport[comport_number]);
+ return(1);
+ }
+
+ COMMTIMEOUTS Cptimeouts;
+
+ Cptimeouts.ReadIntervalTimeout = MAXDWORD;
+ Cptimeouts.ReadTotalTimeoutMultiplier = 0;
+ Cptimeouts.ReadTotalTimeoutConstant = 0;
+ Cptimeouts.WriteTotalTimeoutMultiplier = 0;
+ Cptimeouts.WriteTotalTimeoutConstant = 0;
+
+ if(!SetCommTimeouts(Cport[comport_number], &Cptimeouts))
+ {
+ printf("unable to set comport time-out settings\n");
+ CloseHandle(Cport[comport_number]);
+ return(1);
+ }
+
+ return(0);
+}
+
+
+int PollComport(int comport_number, unsigned char *buf, int size)
+{
+ int n;
+
+ if(size>4096) size = 4096;
+
+/* added the void pointer cast, otherwise gcc will complain about */
+/* "warning: dereferencing type-punned pointer will break strict aliasing rules" */
+
+ ReadFile(Cport[comport_number], buf, size, (LPDWORD)((void *)&n), NULL);
+
+ return(n);
+}
+
+
+int SendByte(int comport_number, unsigned char byte)
+{
+ int n;
+
+ WriteFile(Cport[comport_number], &byte, 1, (LPDWORD)((void *)&n), NULL);
+
+ if(n<0) return(1);
+
+ return(0);
+}
+
+
+int SendBuf(int comport_number, unsigned char *buf, int size)
+{
+ int n;
+
+ if(WriteFile(Cport[comport_number], buf, size, (LPDWORD)((void *)&n), NULL))
+ {
+ return(n);
+ }
+
+ return(-1);
+}
+
+bool rs232_cts(const serial_port sp);
+{
+ int status;
+
+ GetCommModemStatus(Cport[comport_number], (LPDWORD)((void *)&status));
+
+ if(status&MS_CTS_ON) return(1);
+ else return(0);
+}
+
+
+void CloseComport(int comport_number)
+{
+ CloseHandle(Cport[comport_number]);
+}
+
+
+#endif
diff --git a/src/rs232.h b/src/rs232.h
new file mode 100644
index 0000000..3a5b95d
--- /dev/null
+++ b/src/rs232.h
@@ -0,0 +1,56 @@
+/*
+
+Public platform independent Near Field Communication (NFC) library
+Copyright (C) 2009, Roel Verdult
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+
+*/
+
+#ifndef _LIBNFC_RS232_H_
+#define _LIBNFC_RS232_H_
+
+#include
+#include
+#include
+#include "defines.h"
+#include "types.h"
+
+// Handle platform specific includes
+#ifndef _WIN32
+ #include
+ #include
+ #include
+ #include
+ #include
+ #include
+ #include
+#else
+ #include
+#endif
+
+// Define shortcut to types to make code more readable
+typedef void* serial_port;
+#define INVALID_SERIAL_PORT (void*)(~1)
+#define CLAIMED_SERIAL_PORT (void*)(~2)
+
+serial_port rs232_open(const char* pcPortName);
+void rs232_close(const serial_port sp);
+bool rs232_cts(const serial_port sp);
+bool rs232_receive(const serial_port sp, byte* pbtRx, ui32* puiRxLen);
+bool rs232_send(const serial_port sp, const byte* pbtTx, const ui32 uiTxLen);
+
+#endif // _LIBNFC_RS232_H_
+
+