text: /*====================================================================*
   *
   *   Copyright (c) 2013 Qualcomm Atheros, Inc.
   *
   *   All rights reserved.
   *
   *   Redistribution and use in source and binary forms, with or 
   *   without modification, are permitted (subject to the limitations 
   *   in the disclaimer below) provided that the following conditions 
   *   are met:
   *
   *   * Redistributions of source code must retain the above copyright 
   *     notice, this list of conditions and the following disclaimer.
   *
   *   * Redistributions in binary form must reproduce the above 
   *     copyright notice, this list of conditions and the following 
   *     disclaimer in the documentation and/or other materials 
   *     provided with the distribution.
   *
   *   * Neither the name of Qualcomm Atheros nor the names of 
   *     its contributors may be used to endorse or promote products 
   *     derived from this software without specific prior written 
   *     permission.
   *
   *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE 
   *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE 
   *   COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR 
   *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
   *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
   *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
   *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
   *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
   *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
   *   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
   *   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
   *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
   *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
   *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
   *
   *--------------------------------------------------------------------*/
  
  /*====================================================================*
   *
   *   void openport (struct _file_ * port, flag_t flags);
   *
   *   open the serial port named by port->name and set file descriptor
   *   port->file; datatype struct _file_ is define in tools/types.h;
   *
   *   this function no longer initializes port settings because there
   *   are too many differences in constants, variables and functions
   *   between Linux, OpenBSD, MacOSX and Windows to cleanly implement
   *   a single approach to serial port configuration; this means that
   *   users should manually configure a port and then leave it alone;
   *
   *   use stty on Linux systems and the Control Panel on Windows;
   *
   *   port configuration code for Linux and Windows can be enabled if
   *   needed by defining SERIAL_CONFIG at compile time; this will not
   *   restore original port setting when the port is closed;
   *
   *
   *   Contributor(s):
   *	Charles Maier <cmaier@qca.qualcomm.com>
   *	Mathieu Olivari <mathieu@qca.qualcomm.com>
   *
   *--------------------------------------------------------------------*/
  
  #ifndef OPENPORT_SOURCE
  #define OPENPORT_SOURCE
  
  #include <unistd.h>
  #include <stdlib.h>
  #include <errno.h>
  
  #if defined (WIN32)
  #	include <windows.h>
  #elif defined (__linux__)
  #	include <termios.h>
  #elif defined (__APPLE__)
  #	include <termios.h>
  #	include <net/ethernet.h>
  #elif defined (__OpenBSD__)
  #	include <termios.h>
  #else
  #error "Unknown Environment"
  #endif
  
  #include "../tools/types.h"
  #include "../tools/files.h"
  #include "../tools/flags.h"
  #include "../tools/error.h"
  #include "../serial/serial.h"
  
  void openport (struct _file_ * port, flag_t flags)
  
  {
  
  #if defined (WIN32)
  
  	HANDLE hSerial;
  	COMMTIMEOUTS timeouts;
  	hSerial = CreateFile (port->name, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
  	if (hSerial == INVALID_HANDLE_VALUE)
  	{
  		error (1, errno, "%s", port->name);
  	}
  	if (_anyset (flags, UART_DEFAULT))
  	{
  		DCB dcbSerial =
  		{
  			0
  		};
  		dcbSerial.DCBlength = sizeof (dcbSerial);
  		if (!GetCommState (hSerial, &dcbSerial))
  		{
  			error (1, errno, "Can't read state: %s", port->name);
  		}
  		if (_anyset (flags, UART_VERBOSE))
  		{
  			printf ("getting %s ", port->name);
  			printf ("Baud %6d ", dcbSerial.BaudRate);
  			printf ("Data %d ", dcbSerial.ByteSize);
  			printf ("Stop %d ", dcbSerial.StopBits);
  			printf ("Parity %d\n", dcbSerial.Parity);
  		}
  		dcbSerial.BaudRate = CBR_115200;
  		dcbSerial.ByteSize = DATABITS_8;
  		dcbSerial.StopBits = ONESTOPBIT;
  		dcbSerial.Parity = NOPARITY;
  		if (_anyset (flags, UART_VERBOSE))
  		{
  			printf ("setting %s ", port->name);
  			printf ("Baud %6d ", dcbSerial.BaudRate);
  			printf ("Data %d ", dcbSerial.ByteSize);
  			printf ("Stop %d ", dcbSerial.StopBits);
  			printf ("Parity %d\n", dcbSerial.Parity);
  		}
  		if (!SetCommState (hSerial, &dcbSerial))
  		{
  			error (1, errno, "Can't save state: %s", port->name);
  		}
  	}
  	timeouts.ReadIntervalTimeout = 10;
  	timeouts.ReadTotalTimeoutConstant = 50;
  	timeouts.ReadTotalTimeoutMultiplier = 10;
  	timeouts.WriteTotalTimeoutConstant = 50;
  	timeouts.WriteTotalTimeoutMultiplier = 10;
  	if (!SetCommTimeouts (hSerial, &timeouts))
  	{
  		error (1, errno, "Can't set timeouts: %s", port->name);
  	}
  	CloseHandle (hSerial);
  	if ((port->file = open (port->name, O_BINARY|O_RDWR)) == -1)
  	{
  		error (1, errno, "%s", port->name);
  	}
  
  #else
  
  	if ((port->file = open (port->name, O_BINARY|O_RDWR)) == -1)
  	{
  		error (1, errno, "%s", port->name);
  	}
  	if (_anyset (flags, UART_DEFAULT))
  	{
  		struct termios termios;
  
  #if 1
  
  /*
   *	POSIX generic code;
   */
  
  		tcgetattr (port->file, &termios);
  		cfmakeraw (&termios);
  		termios.c_cflag |= CS8;
  		termios.c_cflag &= ~(CSTOPB);
  		cfsetospeed (&termios, B115200);
  
  #else
  
  /*
   *	Linux specific code;
   */
  
  		termios.c_cflag = B115200 | CS8 | CLOCAL | CREAD;
  		termios.c_iflag = IGNPAR;
  		termios.c_oflag = 0;
  		termios.c_lflag = 0;
  		termios.c_cc [VTIME] = 0;
  		termios.c_cc [VMIN] = 5;
  
  #endif
  
  		tcsetattr (port->file, TCSANOW, &termios);
  	}
  
  #endif
  
  	return;
  }
  
  
  #endif
  
  