/*====================================================================*
*
* 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