--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gpf/tst/drv/usart.c	Fri Oct 16 06:23:26 2020 +0000
@@ -0,0 +1,1843 @@
+/* 
++------------------------------------------------------------------------------
+|  File:       usart.c
++------------------------------------------------------------------------------
+|  Copyright 2002 Texas Instruments Berlin, AG 
+|                 All rights reserved. 
+| 
+|                 This file is confidential and a trade secret of Texas 
+|                 Instruments Berlin, AG 
+|                 The receipt of or possession of this file does not convey 
+|                 any rights to reproduce or disclose its contents or to 
+|                 manufacture, use, or sell anything it may describe, in 
+|                 whole, or in part, without the specific written consent of 
+|                 Texas Instruments Berlin, AG. 
++----------------------------------------------------------------------------- 
+|  Purpose :  This Modul defines functions for actual or simulated 
+|             USART comunication between two PS-Frames.
+|             Use US_set_mode() to select actual USART under windows95 or 
+|             under windowsNT, or to select simulated USART under win95/NT
++----------------------------------------------------------------------------- 
+*/ 
+
+
+
+#ifndef __USART_C__
+#define __USART_C__
+#endif
+
+/*==== INCLUDES ===================================================*/
+
+ #include <windows.h>
+#ifndef _VXWORKS_
+  #include <stdarg.h>
+#endif
+#include <stdio.h>
+#include "typedefs.h"
+#include "usart.h"
+#include "printtofile.h"
+
+/*==== CONSTANTS ==================================================*/
+
+#define COM_ERROR		(CE_FRAME | CE_IOE | CE_OVERRUN)
+#define XON				0x11
+#define XOFF			0x13
+
+#define READER_THREAD_EXIT_CODE 4711
+#define USART_BUFFER_SIZE       0x10000   /* 65536 */
+#define FILE_MAX_CHUNK          0x0ffff
+#define FILE_SLOW_DOWN          0x01
+
+#ifdef _TOOLS_ 
+  #define USART_SEND_TIMEOUT 60000
+  #define USART_RCV_TIMEOUT 120000
+#else  /* _TOOLS_ */
+  #define USART_SEND_TIMEOUT INFINITE
+  #define USART_RCV_TIMEOUT INFINITE
+#endif /* _TOOLS_ */
+
+/*==== TYPES ======================================================*/
+typedef struct
+{
+  UBYTE  Connects;
+  UBYTE  Type;
+  USHORT CH1_numOfBytes;
+  USHORT CH2_numOfBytes;
+  UBYTE  CH1_CTS;
+  UBYTE  CH2_CTS;
+  UBYTE  CH1_data[USART_BUFFER_SIZE];
+  UBYTE  CH2_data[USART_BUFFER_SIZE];
+} T_USARTStream;
+
+/*==== EXPORT =====================================================*/
+/*==== PRIVATE ====================================================*/
+/*==== VARIABLES ==================================================*/
+
+static int       m_mode=UT_MODE_NT;
+static long int  m_send_timeout=(long int)USART_SEND_TIMEOUT;
+static long int  m_rcv_timeout =(long int)USART_RCV_TIMEOUT;
+static int first_ut_init = 1;
+static FILE*     m_file=NULL;
+
+static OVERLAPPED gWriteOverLap;
+static OVERLAPPED gReadOverLap;
+
+static  int   ReaderThreadExitRequest = FALSE;
+
+
+LOCAL   void  (*ReceiveCallback)(void) = NULL;
+static  int   initialized = FALSE;
+
+#ifdef COM_AUTOSEARCH
+static  int   P  = 0;
+#endif
+
+#ifdef DEBUG_USART
+static  int   usart_in, usart_out;
+#endif
+
+T_USARTStream *Stream;
+
+HANDLE         SemCH1_full;
+HANDLE         SemCH2_full;
+HANDLE         SemCH1_empty;
+HANDLE         SemCH2_empty;
+HANDLE         USARTMemHandle;
+HANDLE         *semRCVFull=0, *semRCVEmpty=0;
+HANDLE         *semSNDFull=0, *semSNDEmpty=0;
+HANDLE         ut_sema_handle;
+
+UBYTE          *InBuffer, *OutBuffer, *readPointer;
+USHORT         *InCounter, *OutCounter;
+UBYTE          *CTS = NULL;
+
+
+static HANDLE hComDev = INVALID_HANDLE_VALUE;
+static HANDLE hThread = INVALID_HANDLE_VALUE;
+static int mem_closed = TRUE;
+static int cls_cnt = 0;
+static int snd_cnt = 0;
+
+/*==== FUNCTIONS ==================================================*/
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USART                  |
+| STATE   : code                    ROUTINE : US_set_mode            |
++--------------------------------------------------------------------+
+
+  PURPOSE : With this function you can select the UART mode 
+                #define US_MODE_95         1
+                #define US_MODE_NT         2
+                #define US_MODE_SIM        3  
+                #define US_MODE_FILE       4
+  
+*/
+void US_set_mode(int mode)
+{
+  m_mode=mode;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USART                  |
+| STATE   : code                    ROUTINE : US_set_mode            |
++--------------------------------------------------------------------+
+
+  PURPOSE : With this function get the seleced UART mode  
+                #define US_MODE_95         1
+                #define US_MODE_NT         2
+                #define US_MODE_SIM        3  
+                #define US_MODE_FILE       4
+*/
+int US_get_mode()
+{
+  return m_mode;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USARTSIM               |
+| STATE   : code                    ROUTINE : unlockUSARTMemory      |
++--------------------------------------------------------------------+
+
+  PURPOSE : unlocks the previously locked shared memory area.
+  
+*/
+LOCAL void markRCVBufferEmpty (void)
+{
+  ReleaseSemaphore (*semRCVEmpty,
+                    1,
+                    NULL);
+}
+
+LOCAL void markSNDBufferFull (void)
+{
+  ReleaseSemaphore (*semSNDFull,
+                    1,
+                    NULL);
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USARTSIM               |
+| STATE   : code                    ROUTINE : waitForSNDBufferEmpty  |
++--------------------------------------------------------------------+
+
+  PURPOSE : waits for send buffer becoming empty
+
+  RETURNS :  0 .. send buffer is empty
+            -1 .. given up
+
+*/
+LOCAL int waitForSNDBufferEmpty (void)
+{
+  if (WaitForSingleObject (*semSNDEmpty, m_send_timeout) NEQ WAIT_OBJECT_0)
+  {
+    int err = GetLastError();
+    PrintToFile("USART: error code %d\n", err);
+    PrintToFile("USART: giving up sending with %d ms timeout :-(\n", m_send_timeout);
+    return -1; /* give up */
+  }
+  return 0;
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USARTSIM               |
+| STATE   : code                    ROUTINE : createUSARTMemory      |
++--------------------------------------------------------------------+
+
+  PURPOSE : Create two pipes for byte oriented data exchange
+            between two win32 processes
+
+*/
+
+LOCAL void *createUSARTMemory (char *name, ULONG size)
+{
+  char newname[40];
+
+  /*
+   * create two Semaphores pairs to protect the send data to be
+   * overwritten before they have read by the receiver
+   */
+
+  sprintf (newname, "%s_CH1empty", name);
+  
+  SemCH1_empty = CreateSemaphore (NULL,
+                                  1,                               
+                                  1,                           
+                                  newname);
+     
+  if (SemCH1_empty EQ NULL)
+    return NULL;
+
+  sprintf (newname, "%s_CH1full", name);
+  
+  SemCH1_full = CreateSemaphore (NULL,
+                                 0,                               
+                                 1,                           
+                                 newname);
+     
+  if (SemCH1_full EQ NULL)
+    return NULL;
+
+  sprintf (newname, "%s_CH2empty", name);
+  
+  SemCH2_empty = CreateSemaphore (NULL,
+                                  1,                               
+                                  1,                           
+                                  newname);
+     
+  if (SemCH2_empty EQ NULL)
+    return NULL;
+
+  sprintf (newname, "%s_CH2full", name);
+  
+  SemCH2_full = CreateSemaphore (NULL,
+                                 0,                               
+                                 1,                           
+                                 newname);
+     
+  if (SemCH2_full EQ NULL)
+    return NULL;
+
+  /*
+   * create a shared memory area
+   */
+  sprintf (newname, "UT_Mem_%s", name);
+
+  USARTMemHandle
+      = CreateFileMapping (
+                           (HANDLE) 0xffffffff,  /* memory-mapped     */
+                            NULL,                /* no security       */
+                            PAGE_READWRITE,      /* read/write access */
+                           (DWORD) 0,
+     /* memory size     */ (DWORD) size,
+                           newname           /* name of sh. mem */
+                          ); 
+  
+  if (USARTMemHandle EQ NULL)
+    return NULL;
+ 
+  /*
+   * map the shared memory area into the address space of the process
+   * and return the startaddress.
+   */
+  
+  return MapViewOfFile (USARTMemHandle,
+                        FILE_MAP_WRITE,
+                        0,
+                        0,
+                        0);
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USARTSIM               |
+| STATE   : code                    ROUTINE : openUSARTMemory        |
++--------------------------------------------------------------------+
+
+  PURPOSE : open a shared memory area for character exchange
+            between two WIN32 processes
+
+*/
+
+LOCAL void *openUSARTMemory (char *name, ULONG size)
+{
+  char newname[30];
+
+  /*
+   * open the Semaphores
+   */
+
+  sprintf (newname, "%s_CH1empty", name);
+
+  SemCH1_empty = OpenSemaphore (SEMAPHORE_MODIFY_STATE
+                                | SYNCHRONIZE,
+                                FALSE,
+                                newname);
+     
+  if (SemCH1_empty EQ NULL)
+    return NULL;
+
+  sprintf (newname, "%s_CH1full", name);
+
+  SemCH1_full =  OpenSemaphore (SEMAPHORE_MODIFY_STATE
+                                | SYNCHRONIZE,
+                                FALSE,
+                                newname);
+     
+  if (SemCH1_full EQ NULL)
+    return NULL;
+
+  sprintf (newname, "%s_CH2empty", name);
+
+  SemCH2_empty = OpenSemaphore (SEMAPHORE_MODIFY_STATE
+                                | SYNCHRONIZE,
+                                FALSE,
+                                newname);
+     
+  if (SemCH2_empty EQ NULL)
+    return NULL;
+
+  sprintf (newname, "%s_CH2full", name);
+
+  SemCH2_full =  OpenSemaphore (SEMAPHORE_MODIFY_STATE
+                                | SYNCHRONIZE,
+                                FALSE,
+                                newname);
+     
+  if (SemCH2_full EQ NULL)
+    return NULL;
+
+  /*
+   * open the shared memory area
+   */
+  
+  sprintf (newname, "UT_Mem_%s", name);
+
+  USARTMemHandle =
+    OpenFileMapping (FILE_MAP_WRITE,
+                     FALSE,
+                     newname);  /* name of sh. mem */
+                 
+  
+  if (USARTMemHandle EQ NULL)
+    return NULL;
+ 
+  /*
+   * map the shared memory area into the address space of the process
+   * and return the startaddress.
+   */
+  
+  return MapViewOfFile (USARTMemHandle,
+                        FILE_MAP_WRITE,
+                        0,
+                        0,
+                        0);
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USART                  |
+| STATE   : code                    ROUTINE : waitForRCVBufferFull   |
++--------------------------------------------------------------------+
+
+  PURPOSE : This function waits until an incoming character
+            is signaled with the EV_RXCHAR Event 
+  
+*/
+
+LOCAL void waitForRCVBufferFull (void)
+{
+  switch (m_mode) {
+    case US_MODE_95: {
+      static COMSTAT stComStat;
+      static DWORD   dwErrors;
+      static DWORD   EvtMask = 0;
+      BOOL    validReceive = FALSE;
+
+      do
+      {
+        SetCommMask (hComDev, EV_RXCHAR) ;
+        WaitCommEvent (hComDev, &EvtMask, NULL);
+        ClearCommError (hComDev, &dwErrors, &stComStat);
+  
+        if (dwErrors & COM_ERROR)
+          PurgeComm (hComDev, PURGE_RXCLEAR|PURGE_RXABORT);
+        else
+          validReceive = TRUE;
+
+      } while (!validReceive);
+      break;
+    }
+    case US_MODE_NT: {
+      static COMSTAT stComStat;
+      static DWORD   dwErrors;
+      static DWORD   EvtMask = 0;
+      BOOL    validReceive = FALSE;
+
+      do
+      {
+        SetCommMask (hComDev, EV_RXCHAR) ;
+        WaitCommEvent (hComDev, &EvtMask, NULL);
+        ClearCommError (hComDev, &dwErrors, &stComStat);
+
+        if (dwErrors & COM_ERROR)
+          PurgeComm (hComDev, PURGE_RXCLEAR|PURGE_RXABORT);
+        else
+          validReceive = TRUE;
+
+      } while (!validReceive && !ReaderThreadExitRequest);
+      break;
+    }
+    case US_MODE_SIM: {
+      if (WaitForSingleObject (*semRCVFull, m_rcv_timeout) NEQ WAIT_OBJECT_0)
+      {
+        PrintToFile("USART: no stack connected\n");
+      }
+      break;
+    }
+    default:
+      break;
+  }
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USART                  |
+| STATE   : code                    ROUTINE : _readerThread          |
++--------------------------------------------------------------------+
+
+  PURPOSE : This function is the central signal handling function. It is
+            installed as a thread and waits for the occurance of an
+            event and then calls the installed callback function
+            of the application.
+  
+*/
+
+LOCAL void _readerThread (void)
+{
+  while (ReaderThreadExitRequest == FALSE)
+  {
+    waitForRCVBufferFull ();
+    ReceiveCallback ();
+  } 
+  ReaderThreadExitRequest = FALSE;
+  ExitThread(READER_THREAD_EXIT_CODE);
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USART                  |
+| STATE   : code                    ROUTINE : convertBaudrate        |
++--------------------------------------------------------------------+
+
+  PURPOSE : This function convert the constants for the baudrates in
+            usart.h into the equvalent constants for WIN32 comm.
+        
+*/
+LOCAL DWORD convertBaudrate (DWORD br)
+{   
+  switch (br)
+  {
+    case US_BAUD_256000:
+      return CBR_256000;
+
+    case US_BAUD_128000:
+      return CBR_128000;
+
+    case US_BAUD_115200:
+      return CBR_115200;
+
+    case US_BAUD_57600:
+      return CBR_57600;
+
+    case US_BAUD_38400:
+      return CBR_38400;
+    
+    case US_BAUD_19200:
+      return CBR_19200;
+
+    case US_BAUD_14400:
+      return CBR_14400;
+
+    case US_BAUD_9600:
+      return CBR_9600;
+
+    case US_BAUD_4800:
+      return CBR_4800;
+
+    case US_BAUD_2400:
+      return CBR_2400;
+
+    case US_BAUD_1200:
+      return CBR_1200;
+
+    case US_BAUD_600:
+      return CBR_600;
+
+    case US_BAUD_300:
+      return CBR_300;
+
+    default:
+      /* no CBR_xxx constant found -> return value itsself */
+      return br;
+  }
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)           MODULE  : USART                  |
+| STATE   : code                    ROUTINE : sioInit                |
++--------------------------------------------------------------------+
+
+  PURPOSE : This function opens the given comm port and initiializes
+            the DCB with baudrate and flowcontrol parameters.
+        
+*/
+
+LOCAL BOOL sioInit (int  portNr,
+                    unsigned int  baudrate,
+                    unsigned int  bufSize,
+                    char flowCtrl)
+{
+  char         szPort[10];
+  DCB          stDCB;
+  COMMTIMEOUTS stTimeout ;
+  DWORD        dwErrorFlags;
+  COMSTAT      stComStat;
+
+  sprintf (szPort, "\\\\.\\COM%d", portNr) ;
+
+  // ------------------------------------
+  // open the communication device
+  // ------------------------------------
+  if (m_mode==UT_MODE_NT) {
+    hComDev = CreateFile
+            ( 
+              szPort,
+              GENERIC_READ | GENERIC_WRITE,
+              0,                       /* exclusive access  */
+              NULL,                    /* no security attrs */
+              OPEN_EXISTING,
+              FILE_FLAG_OVERLAPPED,
+              NULL
+            );
+  } else {
+    hComDev = CreateFile
+            ( 
+              szPort,
+              GENERIC_READ | GENERIC_WRITE,
+              0,                       // exclusive access
+              NULL,                    // no security attrs
+              OPEN_EXISTING,
+              0,
+              NULL
+            );
+  }
+
+  if (hComDev EQ INVALID_HANDLE_VALUE)
+    return FALSE;   // device not available
+
+  if (m_mode==UT_MODE_NT) {
+    gReadOverLap.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL);
+    if (!gReadOverLap.hEvent)
+	    return ( FALSE );
+
+    gReadOverLap.Offset = 0;
+    gReadOverLap.OffsetHigh = 0;
+
+    gWriteOverLap.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL);
+    if (!(gWriteOverLap.hEvent))
+	    return ( FALSE );
+
+    gWriteOverLap.Offset = 0;
+    gWriteOverLap.OffsetHigh = 0;
+  }
+
+  // ------------------------------------
+  // get any early notifications
+  // ------------------------------------
+  SetCommMask (hComDev, EV_RXCHAR);
+
+  // ------------------------------------
+  // setup device buffers
+  // ------------------------------------
+  SetupComm (hComDev,
+             bufSize,
+             bufSize
+            );
+
+  // ------------------------------------
+  // purge any information in the buffer
+  // ------------------------------------
+  PurgeComm (hComDev,
+             PURGE_TXABORT | PURGE_RXABORT |
+             PURGE_TXCLEAR | PURGE_RXCLEAR
+            );
+
+  // ------------------------------------
+  // setup up and enable communication
+  // device. If not possible close
+  // communication and abort function.
+  // ------------------------------------
+  if (!GetCommState (hComDev, &stDCB))
+  {
+    SetCommMask (hComDev, 0);
+    CloseHandle (hComDev);
+    return FALSE;
+  }
+
+  stDCB.DCBlength = sizeof (stDCB);  // sizeof(DCB) 
+
+  switch (flowCtrl)
+  {
+    case 'N':
+      stDCB.fOutxCtsFlow = FALSE;
+      stDCB.fOutxDsrFlow = FALSE;
+      stDCB.fDtrControl = DTR_CONTROL_DISABLE;
+      stDCB.fRtsControl = RTS_CONTROL_DISABLE;
+      break;
+    case 'D':
+      stDCB.fOutxCtsFlow = FALSE;
+      stDCB.fOutxDsrFlow = TRUE;
+      stDCB.fDtrControl = DTR_CONTROL_HANDSHAKE;
+      stDCB.fRtsControl = RTS_CONTROL_DISABLE;
+      stDCB.XonLim  = 0;
+      stDCB.XoffLim = 50;
+      break;
+    case 'R':
+      stDCB.fOutxCtsFlow = TRUE;
+      stDCB.fOutxDsrFlow = FALSE;
+      stDCB.fDtrControl = DTR_CONTROL_DISABLE;
+      stDCB.fRtsControl = RTS_CONTROL_HANDSHAKE;
+      stDCB.XonLim  = 0;
+      stDCB.XoffLim = 50;
+      break;
+    case 'P':
+      stDCB.fOutxCtsFlow = FALSE;
+      stDCB.fOutxDsrFlow = FALSE;
+      stDCB.fDtrControl = DTR_CONTROL_ENABLE;
+      stDCB.fRtsControl = RTS_CONTROL_DISABLE;
+      break;
+    case 'V':
+      if (m_mode==US_MODE_NT) {
+        stDCB.fOutxCtsFlow = FALSE;
+        stDCB.fOutxDsrFlow = FALSE;
+        stDCB.fDtrControl = DTR_CONTROL_ENABLE;
+        stDCB.fRtsControl = RTS_CONTROL_ENABLE;
+        break;
+      }
+      /*lint -fallthrough*/
+      /* go on if not US_MODE_NT */
+    default:
+      return FALSE;
+  }
+  fprintf (stdout,"flow control: %c ...", flowCtrl);
+
+  stDCB.BaudRate          = baudrate;  // current baud rate 
+  stDCB.fBinary           = TRUE;      // binary mode, no EOF check 
+  stDCB.fParity           = FALSE;     // enable parity checking 
+  stDCB.fDsrSensitivity   = FALSE;     // DSR sensitivity 
+  stDCB.fTXContinueOnXoff = FALSE;     // XOFF continues Tx 
+  stDCB.fOutX             = FALSE;     // XON/XOFF out flow control 
+  stDCB.fInX              = FALSE;     // XON/XOFF in flow control 
+  stDCB.fErrorChar        = FALSE;     // enable error replacement 
+  stDCB.fNull             = FALSE;     // enable null stripping 
+  stDCB.fAbortOnError     = FALSE;     // abort reads/writes on error 
+  stDCB.ByteSize          = 8;         // number of bits/byte, 4-8 
+  stDCB.Parity            = NOPARITY;  // 0-4=no,odd,even,mark,space 
+  stDCB.StopBits          = ONESTOPBIT;// 0,1,2 = 1, 1.5, 2 
+  stDCB.XonChar           = 0;         // Tx and Rx XON character 
+  stDCB.XoffChar          = 0;         // Tx and Rx XOFF character 
+  stDCB.ErrorChar         = 0;         // error replacement character 
+  stDCB.EofChar           = 0;         // end of input character 
+  stDCB.EvtChar           = 0;         // received event character 
+
+  if (!SetCommState (hComDev, &stDCB))
+  {
+    SetCommMask (hComDev, 0);
+    CloseHandle (hComDev);
+    return FALSE;
+  }
+
+  if (!GetCommTimeouts (hComDev, &stTimeout))
+    return FALSE;
+
+  stTimeout.WriteTotalTimeoutConstant   = 0xffff;
+  stTimeout.WriteTotalTimeoutMultiplier = 0xffff;
+  stTimeout.ReadTotalTimeoutConstant    = 0xffff;
+  stTimeout.ReadIntervalTimeout         = 0;
+  stTimeout.ReadTotalTimeoutMultiplier  = 0xffff;
+
+  if (!SetCommTimeouts (hComDev, &stTimeout))
+    return FALSE;
+
+  PurgeComm (hComDev, PURGE_RXCLEAR
+                     |PURGE_TXCLEAR
+                     |PURGE_TXABORT
+                     |PURGE_RXABORT);
+
+  ClearCommError (hComDev, &dwErrorFlags, &stComStat);
+
+  return TRUE;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : sioRead                    |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+LOCAL BOOL sioRead (BYTE  *bpRXBuffer, // RX Buffer
+                    DWORD *pdwLength)  // IN:  Bytes to read
+{
+  DWORD   dwBytesToRead = *pdwLength ;
+  DWORD   dwErrorFlags;
+  COMSTAT stComStat;
+
+  if (hComDev == INVALID_HANDLE_VALUE
+    OR *pdwLength == 0) 
+    return FALSE;  // device not available
+
+  if (m_mode==US_MODE_NT) {
+    if (!ReadFile (hComDev,
+                 bpRXBuffer,
+                 dwBytesToRead,
+                 pdwLength,
+                 &gReadOverLap))
+    {
+      // if there was a problem
+		  if (GetLastError() == ERROR_IO_PENDING)
+   	  {
+	  	  /* asynchronous i/o is still in progress         */
+		
+   			/* do something else for a while                 */
+	   		/* check on the results of the asynchronous read */
+	    	if (GetOverlappedResult(gReadOverLap.hEvent, &gReadOverLap, 
+	    		pdwLength, TRUE))
+			    return TRUE;
+      }
+
+      ClearCommError(hComDev, &dwErrorFlags, &stComStat);
+      return FALSE;
+    } else {
+      ClearCommError(hComDev, &dwErrorFlags, &stComStat);
+    }
+  } else {
+    if (!ReadFile (hComDev,
+                 bpRXBuffer,
+                 dwBytesToRead,
+                 pdwLength,
+                 NULL))
+    {
+      // if there was a problem
+      ClearCommError(hComDev, &dwErrorFlags, &stComStat);
+      return FALSE;
+    }
+  }
+#ifdef DEBUG_USART
+  {
+    char traceBuf[255];
+    unsigned int  i;
+
+    traceBuf[0] = '\0';
+
+    if (bpRXBuffer[0] EQ 0xff)
+    {
+      Sleep(1);
+    }
+
+    for (i=0; i<*pdwLength; i++)
+    {
+      if (!isprint (bpRXBuffer[i]))
+      {
+        sprintf (traceBuf+strlen(traceBuf),
+                 "[%02x]%c",
+                 (USHORT) bpRXBuffer[i],
+                 ((bpRXBuffer[i] EQ '\n') ? '\n' : ' ')
+                 );
+      }
+      else
+        sprintf (traceBuf+strlen(traceBuf),
+                 "%c",
+                 bpRXBuffer[i]);
+      if (strlen (traceBuf) > 200)
+      {
+        write (usart_in, traceBuf, strlen (traceBuf));
+        traceBuf[0] = '\0';
+      }
+    }
+    /*
+     * write the string to the tracefile
+     */
+    write (usart_in, traceBuf, strlen (traceBuf));
+  }
+#endif
+  return TRUE;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : sioWrite                   |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+LOCAL BOOL sioWrite (BYTE  *bpTXBuffer, // TX   Buffer
+                     DWORD *pdwLength)  // IN:  Bytes to read
+{
+  DWORD   dwBytesToSend = *pdwLength, toSend, realySend;
+  int     ret;
+  DWORD   dwErrorFlags;
+  COMSTAT stComStat;
+  DWORD   dwNumberOfBytesTransferred;   /* Windows 95:                                       */
+                                        /* The number of transferred bytes returned by the   */
+                                        /* GetOverlappedResult function is always zero, also */
+                                        /* if there are bytes received by the communication  */ 
+                                        /* partner via the serial line.                      */
+
+  if (hComDev EQ INVALID_HANDLE_VALUE
+    OR !bpTXBuffer
+    OR *pdwLength ==0)
+     return FALSE; // device not available
+
+  realySend = 0;
+  toSend    = dwBytesToSend;
+
+  while (toSend > 0)
+  {
+    if (m_mode==US_MODE_NT) {
+    	if (toSend > 20) {
+	    	ret = WriteFile (hComDev,
+                       bpTXBuffer+realySend,
+                       20,
+                       pdwLength,
+                       &gWriteOverLap);
+		    dwNumberOfBytesTransferred = 20;     
+  	  } else {
+  		  ret = WriteFile (hComDev,
+                       bpTXBuffer+realySend,
+                       toSend,
+                       pdwLength,
+                       &gWriteOverLap);
+		    dwNumberOfBytesTransferred = toSend;
+	    }
+    	/* if there was a problem, or the async. operation's still pending ... */
+	    if (!ret)
+  	  {
+  	  	/* deal with the error code */
+	  	  if (GetLastError() == ERROR_IO_PENDING)
+  	  	{
+	  	  	/* asynchronous i/o is still in progress         */
+		
+  		  	/* do something else for a while                 */
+	  		  /* check on the results of the asynchronous read */
+  		  	while (!GetOverlappedResult(gWriteOverLap.hEvent, &gWriteOverLap, pdwLength, TRUE))
+	    		{
+			    	if(GetLastError() == ERROR_IO_INCOMPLETE) {
+    					continue;
+            } else {
+				    	break ;
+            }
+      		}
+		    } else {
+			    ClearCommError(hComDev, &dwErrorFlags, &stComStat);
+    			return FALSE;
+		    }
+      }
+    } else {
+      if (toSend > 20) {
+        ret = WriteFile (hComDev,
+                       bpTXBuffer+realySend,
+                       20,
+                       pdwLength,
+                       NULL);
+        dwNumberOfBytesTransferred = 20; /* US_MODE_NT */
+      } else {
+        ret = WriteFile (hComDev,
+                       bpTXBuffer+realySend,
+                       toSend,
+                       pdwLength,
+                       NULL);
+  	    dwNumberOfBytesTransferred = toSend; /* US_MODE_NT */
+      }
+    }
+
+#ifdef DEBUG_USART
+    {
+      char traceBuf[255];
+      unsigned int  i;
+
+      traceBuf[0] = '\0';
+
+      for (i=0; i<*pdwLength; i++)
+      {
+        if (!isprint (bpTXBuffer[realySend+i]))
+        {
+          sprintf (traceBuf+strlen(traceBuf),
+                   "[%02x]%c",
+                   (USHORT) bpTXBuffer[realySend+i],
+                   ((bpTXBuffer[realySend+i] EQ '\n') ? '\n': ' ')
+                   );
+        }
+        else
+          sprintf (traceBuf+strlen(traceBuf),
+                   "%c",
+                   bpTXBuffer[realySend+i]);
+        if (strlen (traceBuf) > 200)
+        {
+          write (usart_out, traceBuf, strlen (traceBuf));
+          traceBuf[0] = '\0';
+        }
+      }
+      /*
+       * write the string to the tracefile
+       */
+      write (usart_out, traceBuf, strlen (traceBuf));
+    }
+#endif
+
+    switch (m_mode) {
+      case US_MODE_NT:
+       	realySend += dwNumberOfBytesTransferred;
+      	toSend    -= dwNumberOfBytesTransferred;
+        break;
+      case US_MODE_95:
+        realySend += *pdwLength;
+        toSend    -= *pdwLength;
+        break;
+      default:
+        break;
+    }
+  }
+
+  *pdwLength = dwBytesToSend;
+
+  return TRUE;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_Init                    |
++--------------------------------------------------------------------+
+
+  PURPOSE : initializes the USART driver
+
+  RETURNS : 0 ... initialization succeeded
+           -1 ... error
+
+*/
+
+
+int UT_Init (unsigned int baudRate, int fifoSize, char flow_ctrl, void (func(void)), const char* fname )
+{
+  if (initialized == TRUE)
+  {
+		return 0;
+  }
+
+  switch (m_mode) 
+  {
+    case US_MODE_FILE:
+      if (!fname || !strlen(fname) || (m_file=fopen(fname,"rb"))==NULL)
+      {
+        fprintf (stdout, "USART: failed to open %s :-(\n",fname);
+        return -1;
+      }
+      fprintf (stdout, "USART: \"%s\" opened\n",fname);
+      break;
+    case US_MODE_95:
+    case US_MODE_NT: {
+      BOOL   ret;
+      DWORD  dwThreadID;
+#ifdef COM_AUTOSEARCH
+      int    from, to;
+      int portNr;
+#else
+      EXTERN int extPort;
+#endif
+
+      ReceiveCallback = func;
+
+#ifdef COM_AUTOSEARCH
+      if (P NEQ 0) {
+        from = to = P;
+      } else {
+        from = 1;
+        to = 4;
+      }
+
+      /*
+       * try COMn: to COMm: where n is from and m is to
+      */
+      for (portNr = from; portNr <= to; portNr++)
+      {
+        fprintf (stdout,"USART: Trying COM%d ... ", portNr);
+
+        if ((ret = sioInit (portNr,
+                        convertBaudrate (baudRate),
+                        10000 /*fifoSize*/,
+                        flow_ctrl)) EQ FALSE) {
+          fprintf (stdout, "fail\n");
+        } else {
+          fprintf (stdout, "success!\n");
+          break;
+        }
+      }
+
+#else
+      fprintf (stdout, "USART: Trying COM%d ... ", extPort);
+
+      if ((ret = sioInit (extPort,
+                        convertBaudrate (baudRate),
+                        10000 /*fifoSize*/,
+                        flow_ctrl)) EQ FALSE) {
+        fprintf (stdout, "fail\n");
+      }
+#endif
+
+      if (ret)
+      {
+        fprintf (stdout, "success!\n");
+
+        if (ReceiveCallback NEQ NULL)
+        {
+          hThread = CreateThread ((LPSECURITY_ATTRIBUTES) NULL,
+                              0,
+                              (LPTHREAD_START_ROUTINE) _readerThread,
+                              (LPVOID) NULL,
+                               0,
+                              &dwThreadID
+                             );
+        }
+        initialized = TRUE;
+      }
+      else {
+        fprintf (stdout, "USART: COM-port not free or baudrate not supported !\n");
+        return -1;
+      }
+      break;  
+    }
+
+    case US_MODE_SIM: {
+      int    i;
+
+      if ( first_ut_init )
+      {
+        if ( (ut_sema_handle = OpenSemaphore (SEMAPHORE_MODIFY_STATE | SYNCHRONIZE, FALSE, "UT_SIM_SEMA")) == NULL )
+        {
+          ut_sema_handle = CreateSemaphore (NULL, 1, 1, "UT_SIM_SEMA");
+        }
+        first_ut_init = 0;
+      }
+
+      WaitForSingleObject (ut_sema_handle, INFINITE);
+
+      if ((Stream = (T_USARTStream *) openUSARTMemory
+                                      (
+                                        (char*)"GSM",
+                                        sizeof (T_USARTStream)
+                                      )) EQ NULL)
+      {
+        if ((Stream = (T_USARTStream *) createUSARTMemory
+                                      (
+                                        (char*)"GSM",
+                                        sizeof (T_USARTStream)
+                                      )) EQ NULL)
+        {
+          PrintToFile ("USART: simulation could not create a shared memory area\n");
+          return -1;
+        }
+        PrintToFile ("USART: shared memory area created\n");
+  
+        Stream->CH1_numOfBytes = 0;
+        Stream->CH2_numOfBytes = 0;
+
+        Stream->CH1_CTS = 0;
+        Stream->CH2_CTS = 0;
+  
+        for (i=0; i<USART_BUFFER_SIZE; i++)
+        {
+          Stream->CH1_data[i] = 0;
+          Stream->CH2_data[i] = 0;
+        }
+
+        Stream->Connects = 0;  /* init connection counter (!! CURRENTLY NOT USED !!) */
+        Stream->Type=1;        /* signaling new type */ 
+      }
+      else
+      {
+        PrintToFile ("USART: shared memory area opened\n");
+      }
+
+      /* set pointers to semaphores and data buffers */
+#ifdef _TOOLS_
+      if (Stream->Type==0) // shared mem created by old stack
+      {
+        PrintToFile ("USART: connecting to old stack !\n");
+
+        Stream->CH1_CTS = 1; // (baudRate NEQ -1); removed because baudrate never negative
+
+        InBuffer      = Stream->CH1_data;
+        OutBuffer     = Stream->CH2_data;
+        InCounter     = &Stream->CH1_numOfBytes;
+        OutCounter    = &Stream->CH2_numOfBytes;
+        semRCVFull    = &SemCH1_full;
+        semRCVEmpty   = &SemCH1_empty;
+        semSNDFull    = &SemCH2_full;
+        semSNDEmpty   = &SemCH2_empty;
+        CTS           = &Stream->CH2_CTS;
+      }
+      else // shared mem created by us or new stack
+      {
+        Stream->CH2_CTS  = 1;  // (baudRate NEQ -1); removed because baudrate never negative 
+
+        InBuffer      = Stream->CH2_data;
+        OutBuffer     = Stream->CH1_data;
+        InCounter     = &Stream->CH2_numOfBytes;
+        OutCounter    = &Stream->CH1_numOfBytes;
+        semRCVFull    = &SemCH2_full;
+        semRCVEmpty   = &SemCH2_empty;
+        semSNDFull    = &SemCH1_full;
+        semSNDEmpty   = &SemCH1_empty;
+        CTS           = &Stream->CH1_CTS;
+      }
+#else  /* _TOOLS_ */
+      Stream->CH1_CTS = 1;  // (baudRate NEQ -1); removed because baudrate never negative 
+
+      InBuffer      = Stream->CH1_data;
+      OutBuffer     = Stream->CH2_data;
+      InCounter     = &Stream->CH1_numOfBytes;
+      OutCounter    = &Stream->CH2_numOfBytes;
+      semRCVFull    = &SemCH1_full;
+      semRCVEmpty   = &SemCH1_empty;
+      semSNDFull    = &SemCH2_full;
+      semSNDEmpty   = &SemCH2_empty;
+      CTS           = &Stream->CH2_CTS;
+#endif /* _TOOLS_ */
+
+      readPointer = InBuffer;
+
+      ReceiveCallback = func;
+
+      Stream->Connects++;      /* mark connection (!! CURRENTLY NOT USED !!) */
+      }
+        
+      ReleaseSemaphore (ut_sema_handle, 1, NULL);
+
+      break;
+    default:
+      break;
+  }
+  initialized = TRUE;
+  mem_closed = FALSE;
+
+#ifdef DEBUG_USART
+  /*
+   * Open protocol file and initialize
+   */
+
+  usart_in  = open ("USART.IN", O_WRONLY| O_TEXT| O_TRUNC| O_CREAT, 0666);
+  usart_out = open ("USART.OUT", O_WRONLY| O_TEXT| O_TRUNC| O_CREAT, 0666);
+#endif
+
+  return 0;
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USARTSIM                   |
+| STATE   : code                ROUTINE : UT_Close                   |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+GLOBAL BOOL UT_Close(void)
+{
+
+  if (initialized == FALSE)
+		return FALSE;
+
+  switch (m_mode) {
+    case US_MODE_FILE:
+      if (m_file)
+      {
+        fclose(m_file);
+        m_file=NULL;
+      }
+      break;
+    case US_MODE_95:
+    case US_MODE_NT: {
+    	DWORD ExitCode;
+    
+      if (ReceiveCallback != NULL) {
+    	  /* Initialize stop _readerThread */
+    	  ReaderThreadExitRequest = TRUE;
+    	  while (ReaderThreadExitRequest == TRUE)
+		      SetCommMask (hComDev, 0);
+      }
+
+    	/* Close Communication port. */
+    	PurgeComm (hComDev,
+			   PURGE_TXABORT | PURGE_RXABORT |
+			   PURGE_TXCLEAR | PURGE_RXCLEAR ) ;
+      if (m_mode==UT_MODE_NT) {
+      	CloseHandle (gReadOverLap.hEvent);
+    	  gReadOverLap.hEvent = INVALID_HANDLE_VALUE ;
+    	  CloseHandle (gWriteOverLap.hEvent);
+    	  gWriteOverLap.hEvent = INVALID_HANDLE_VALUE ;
+      }
+    	CloseHandle (hComDev);
+    	hComDev = INVALID_HANDLE_VALUE;
+	
+      if (ReceiveCallback != NULL) {
+      	/* Stop _readerThread */
+      	do {
+		      GetExitCodeThread(hThread, (LPDWORD) &ExitCode);
+    	  }
+    	  while (ExitCode == STILL_ACTIVE);
+      	CloseHandle (hThread);
+      	hThread = INVALID_HANDLE_VALUE;
+      }
+    
+      break;
+    }
+    case US_MODE_SIM: {
+      PrintToFile("USART: shared memory closed (%d)\n",cls_cnt);
+      mem_closed = TRUE;
+     /* mark disconnection  */
+      Stream->Connects=(Stream->Connects>1) ? 1 : 0; /* (!! CURRENTLY NOT USED !!) */
+
+#ifdef _TOOLS_
+      if (Stream->Type==0) /* shared mem created by old stack */
+      {
+        fprintf (stdout, "USART: disconnecting from old stack !\n");
+        Stream->CH1_CTS = 0; 
+      }
+      else /* shared mem created by us or new stack */
+      {
+        Stream->CH2_CTS = 0; 
+      }
+#else /* _TOOLS_ */
+      Stream->CH1_CTS = 0; 
+#endif /* _TOOLS_ */
+
+      CTS = NULL;
+      /* close all handles */
+      UnmapViewOfFile((void*)Stream);
+      CloseHandle(USARTMemHandle);
+      CloseHandle(SemCH1_full);
+      CloseHandle(SemCH2_full);
+      CloseHandle(SemCH1_empty);
+      CloseHandle(SemCH2_empty);
+      cls_cnt++;
+      break;
+    default:
+      break;
+    }
+  }
+
+#ifdef DEBUG_USART
+ 	/* close tracefiles for usart-in and out */
+ 	close(usart_in);
+ 	close(usart_out);
+#endif
+
+	/* Deinitialize */
+	ReceiveCallback = NULL;
+  initialized     = FALSE;
+
+	return TRUE;
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_InitBlk                 |
++--------------------------------------------------------------------+
+
+  PURPOSE : Initialize the USART for reading blocks
+
+*/
+
+int UT_InitBlk ( unsigned int baudRate, int fifoSize, char flow_ctrl, void *hP)
+{
+  return UT_Init (baudRate, fifoSize, flow_ctrl, NULL, NULL);
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_IsChar                  |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+GLOBAL int UT_IsChar (void)
+{
+  int ret;
+
+  switch (m_mode) {
+    case US_MODE_FILE:
+      Sleep(FILE_SLOW_DOWN);
+      while (feof(m_file))
+      {
+        Sleep(1000);
+        fseek(m_file,0,SEEK_CUR);
+      }
+      ret=1;
+      break;
+    case US_MODE_95:
+    case US_MODE_NT: {
+      static COMSTAT stComStat;
+      static DWORD   dwErrors;
+
+      if (!initialized)
+        return FALSE;
+
+      waitForRCVBufferFull ();
+
+      ClearCommError (hComDev, &dwErrors, &stComStat);
+
+      ret= (stComStat.cbInQue > 0);
+      break;
+    }
+    
+    case US_MODE_SIM: {
+      waitForRCVBufferFull ();
+      ret = (*InCounter NEQ 0);
+
+      if (ret EQ 0)
+        readPointer = InBuffer;
+      break;
+    default: 
+      ret = 0;
+      break;
+    }
+  }
+ 
+  return ret;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_ReadChar                |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+GLOBAL BYTE UT_ReadChar (void)
+{
+  BYTE ret=0;
+
+  switch (m_mode) {
+    case US_MODE_95:
+    case US_MODE_NT: {
+
+      BYTE  buffer[1];
+      ULONG bytesRead;
+
+      if (!initialized)
+        return 0;
+
+      sioRead (buffer, &bytesRead);
+
+      if (!bytesRead)
+        buffer[0] = 0xff;
+
+      ret=buffer[0];
+      break;
+    }
+
+    case US_MODE_SIM: {
+      if (*InCounter NEQ 0)
+      {
+        ret = *readPointer++;
+
+#ifdef DEBUG_USART
+        {
+          BYTE buf[20];
+          sprintf (buf, "R[1 of %d]: ", *InCounter);
+          write (usart_in,
+            buf,
+            strlen (buf));
+          if (isprint (ret))
+          {
+            sprintf (buf, "%c\n", ret);
+          }
+          else
+          {
+            sprintf (buf, "(%02X)\n", ret);
+          }
+          write (usart_in,
+            buf,
+            strlen (buf));
+		    }
+#endif
+
+        (*InCounter)--;
+
+        if (*InCounter EQ 0)
+        {
+          readPointer = InBuffer;
+          markRCVBufferEmpty ();
+        }
+      }
+      break;
+    default:
+      break;
+    }
+  }
+  return ret;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_ReadNChars              |
++--------------------------------------------------------------------+
+
+  PURPOSE : Called from the HISR - Reads a block of characters
+            Parameters : buffer for holding received characters,
+                         max. size of buffer
+            Returns the number of characters read
+
+*/
+
+GLOBAL ULONG UT_ReadNChars (int usart_id, BYTE *buffer, ULONG bufferSize)
+{
+  ULONG   bytes;
+
+  switch (m_mode) {
+    case US_MODE_FILE:
+      if (bufferSize>FILE_MAX_CHUNK)
+      {
+        bufferSize=FILE_MAX_CHUNK;
+      }
+      bytes=fread(buffer,1,bufferSize,m_file);
+      break;
+    case US_MODE_95:
+    case US_MODE_NT: {
+
+      COMSTAT stComStat;
+      DWORD   dwErrors;
+
+      if (!initialized)
+        return 0L;
+
+      ClearCommError (hComDev, &dwErrors, &stComStat);
+  
+      bytes = MINIMUM (stComStat.cbInQue, bufferSize);
+
+      if (bytes EQ 0)
+        return 0L;
+
+      sioRead (buffer, &bytes);
+      break;
+    }
+
+    case US_MODE_SIM: {
+      if ((bytes = MINIMUM (*InCounter, bufferSize)) NEQ 0)
+      {
+#ifdef DEBUG_USART
+        unsigned int i;
+        char buf[50];
+#endif
+    
+        memcpy (buffer, readPointer, bytes);
+
+#ifdef DEBUG_USART
+        sprintf (buf, "R[%d of %d]: ", bytes, *InCounter);
+        write (usart_in, buf, strlen (buf));
+
+        for (i=0; i<bytes; i++)
+        {
+          if (isprint (buffer[i]))
+            sprintf (buf, "%c", buffer[i]);
+          else
+            sprintf (buf, "(%02X)", buffer[i]);
+          write (usart_in,
+             buf,
+             strlen (buf));
+        }
+        write (usart_in, "\n", 1);
+#endif
+
+        (*InCounter) -= (USHORT)bytes;
+
+        if (*InCounter EQ 0)
+        {
+          readPointer = InBuffer;
+          markRCVBufferEmpty ();
+        }
+        else {
+          readPointer += bytes;
+        }
+      }
+      else {
+        markRCVBufferEmpty ();
+      }
+      break;
+    default: bytes = 0;
+      break;
+    }
+  }
+
+  return bytes;
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_WriteChar               |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+GLOBAL void UT_WriteChar (int usart_id, char ch)
+{
+  switch (m_mode) {
+    case US_MODE_95:
+    case US_MODE_NT: {
+      BYTE  buffer[1];
+      ULONG bytesWritten = 1;
+
+      if (!initialized)
+        return;
+
+      buffer[0] = (BYTE)ch;
+
+      sioWrite (buffer, &bytesWritten);
+      break;
+    }
+
+    case US_MODE_SIM: {
+#ifdef DEBUG_USART
+      char buf[50];
+#endif
+
+      if ( CTS == NULL || !*CTS)  /* no testtools connected */
+      {
+        return;
+      }
+
+      if (waitForSNDBufferEmpty () != 0)
+      {
+        markSNDBufferFull ();
+        return;   /* we gave up sending to avoid dead lock */
+      }
+      
+#ifdef DEBUG_USART
+      sprintf (buf, "W[1]: %02X", ch);
+      write (usart_out, buf, strlen (buf));
+#endif
+
+      *OutBuffer  = (UBYTE)ch;
+      *OutCounter = 1;
+   
+      markSNDBufferFull ();
+      break;
+    default:
+      break;
+    }
+  }
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_WriteString             |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+GLOBAL void UT_WriteString (int usart_id, char *s)
+{
+  switch (m_mode) {
+    case US_MODE_95:
+    case US_MODE_NT: {
+      ULONG bytesWritten = strlen (s);
+
+      if (!initialized)
+        return;
+
+      sioWrite ((BYTE *) s, &bytesWritten);
+      break;
+    }
+
+    case US_MODE_SIM: {
+      unsigned int numOfChars;
+#ifdef DEBUG_USART
+      int i;
+      char buf[50];
+#endif
+
+      if ( CTS == NULL || !*CTS)  /* no testtools connected */
+      {
+        return;
+      }
+
+      if (waitForSNDBufferEmpty () != 0)
+      {
+        markSNDBufferFull ();
+        return;   /* we gave up sending to avoid dead lock */
+      }
+
+      numOfChars = strlen (s);
+
+      memcpy (OutBuffer, s, numOfChars);
+      *OutCounter = numOfChars;
+
+#ifdef DEBUG_USART
+      sprintf (buf, "W[%d]:", numOfChars);
+      write (usart_out, buf, strlen (buf));
+
+      for (i=0; i<numOfChars; i++)
+      {
+        if (isprint (OutBuffer[i]))
+          sprintf (buf, "%c", OutBuffer[i]);
+        else
+          sprintf (buf, "(%02X)", OutBuffer[i]);
+        write (usart_out,
+               buf,
+               strlen (buf));
+
+      }
+      write (usart_out,"\n", 1);
+#endif
+
+      markSNDBufferFull ();
+      break;
+    default:
+      break;
+    }
+  }
+}
+
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_WriteNChars             |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+GLOBAL void UT_WriteNChars (int usart_id, BYTE *s, unsigned int n)
+{
+  switch (m_mode) {
+    case US_MODE_95:
+    case US_MODE_NT: {
+      ULONG bytesWritten = (ULONG) n;
+
+      if (!initialized)
+        return;
+
+      if (!sioWrite ((BYTE *) s, &bytesWritten))
+        fprintf (stderr, "USART: Error1\n");
+      if (bytesWritten NEQ (ULONG) n)
+        fprintf (stderr, "USART: Error2\n");
+      break;
+    }
+
+    case US_MODE_SIM: {
+#ifdef DEBUG_USART
+      int i;
+      char buf[50];
+#endif
+      
+      if ( CTS == NULL || !*CTS)  /* no testtools connected */
+      {
+#ifdef DEBUG_USART
+        printf("-");
+#endif
+        snd_cnt++;
+        return;
+      }
+
+      if ( mem_closed == TRUE )
+      {
+        PrintToFile("USART:tried to write on closed memory (%d)\n",snd_cnt);
+        return;
+      }
+      if (waitForSNDBufferEmpty () != 0)
+      {
+        markSNDBufferFull ();
+        PrintToFile("USART: gave up sending\n");
+        snd_cnt++;
+        return;   /* we gave up sending to avoid dead lock */
+      }
+      memcpy (OutBuffer, s, n);
+      *OutCounter = n;
+
+#ifdef DEBUG_USART
+      sprintf (buf, "W[%d]:", n);
+      write (usart_out, buf, strlen (buf));
+
+      for (i=0; i<n; i++)
+      {
+        if (isprint (OutBuffer[i]))
+          sprintf (buf, "%c", OutBuffer[i]);
+        else
+          sprintf (buf, "(%02X)", OutBuffer[i]);
+        write (usart_out,
+               buf,
+               strlen (buf));
+      }
+      write (usart_out,"\n", 1);
+#endif
+
+      if ( mem_closed == TRUE )
+      {
+        PrintToFile("USART: written on closed memory (%d)\n",snd_cnt);
+        snd_cnt++;
+        return;
+      }
+#ifdef DEBUG_USART
+      printf("+");
+#endif
+      markSNDBufferFull ();
+      snd_cnt++;
+      break;
+    default:
+      break;
+    }
+  }
+}
+
+/*
++--------------------------------------------------------------------+
+| PROJECT : GSM-PS (6147)       MODULE  : USART                      |
+| STATE   : code                ROUTINE : UT_SetFlowCtrl             |
++--------------------------------------------------------------------+
+
+  PURPOSE : 
+
+*/
+
+GLOBAL void UT_SetFlowCtrl (char flowCtrl)
+{
+  switch (m_mode) {
+    case US_MODE_95:
+    case US_MODE_NT: {
+      DCB stDCB;
+
+      if (!GetCommState (hComDev, &stDCB))
+        return;
+
+      stDCB.DCBlength = sizeof (stDCB);  // sizeof(DCB) 
+
+      switch (flowCtrl)
+      {
+        case 'N':
+          stDCB.fOutxCtsFlow = FALSE;
+          stDCB.fOutxDsrFlow = FALSE;
+          stDCB.fDtrControl = DTR_CONTROL_DISABLE;
+          stDCB.fRtsControl = RTS_CONTROL_DISABLE;
+          break;
+        case 'D':
+          stDCB.fOutxCtsFlow = FALSE;
+          stDCB.fOutxDsrFlow = TRUE;
+          stDCB.fDtrControl = DTR_CONTROL_HANDSHAKE;
+          stDCB.fRtsControl = RTS_CONTROL_DISABLE;
+          stDCB.XonLim  = 0;
+          stDCB.XoffLim = 50;
+          break;
+        case 'R':
+          stDCB.fOutxCtsFlow = TRUE;
+          stDCB.fOutxDsrFlow = FALSE;
+          stDCB.fDtrControl = DTR_CONTROL_DISABLE;
+          stDCB.fRtsControl = RTS_CONTROL_HANDSHAKE;
+          stDCB.XonLim  = 0;
+          stDCB.XoffLim = 50;
+          break;
+        case 'P':
+          stDCB.fOutxCtsFlow = FALSE;
+          stDCB.fOutxDsrFlow = FALSE;
+          stDCB.fDtrControl = DTR_CONTROL_ENABLE;
+          stDCB.fRtsControl = RTS_CONTROL_DISABLE;
+          break;
+        default:
+          break;
+      }
+
+      SetCommState (hComDev, &stDCB);
+      break;
+    }
+
+    case US_MODE_SIM:
+      break;
+    default:
+      break;
+  }
+}