/*
* Descent 3
* Copyright (C) 2024 Parallax Software
*
* 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 .
*/
/*
* $Logfile: /DescentIII/Main/ddio_lnx/lnxio.cpp $
* $Revision: 1.6 $
* $Date: 2004/02/25 00:04:06 $
* $Author: ryan $
*
* Linux IO routines
*
* $Log: lnxio.cpp,v $
* Revision 1.6 2004/02/25 00:04:06 ryan
* Removed loki_utils dependency and ported to MacOS X (runs, but incomplete).
*
* Revision 1.5 2000/05/29 05:20:13 icculus
* Removed a real repetitive mprintf().
*
* Revision 1.4 2000/05/29 05:19:17 icculus
* Serial behaviour is now correct (and the Rock'n'Ride works!). A
* little more debugging code was added.
*
* Revision 1.3 2000/04/25 06:10:27 icculus
* Added buttloads of debug information, and fixed some more glitches.
*
* Revision 1.2 2000/04/24 03:18:53 icculus
* Serial port i/o code written, so I can ROCK'n'RIDE it!
*
* Revision 1.1.1.1 2000/04/18 00:00:33 icculus
* initial checkin
*
*
* 5 7/14/99 9:06p Jeff
* added comment header
*
* $NoKeywords: $
*/
// ----------------------------------------------------------------------------
// Linux IO System Main Library Interface
// ----------------------------------------------------------------------------
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "pserror.h"
#include "application.h"
#include "ddio_lnx.h"
#include "ddio.h"
bool DDIO_init = false;
oeLnxApplication *Lnx_app_obj = NULL;
static struct termios oldtio[4];
static int portfd[4] = {-1, -1, -1, -1};
// ----------------------------------------------------------------------------
// Initialization and destruction functions
// ----------------------------------------------------------------------------
bool ddio_InternalInit(ddio_init_info *init_info) {
mprintf((0, "DDIO: ddio_InternalInit() called."));
Lnx_app_obj = (oeLnxApplication *)init_info->obj;
DDIO_init = true;
return true;
}
void ddio_InternalClose() {
mprintf((0, "DDIO: ddio_InternalClose() called."));
if (DDIO_init) {
for (int i = 0; i < (sizeof(portfd) / sizeof(portfd[0])); i++) {
if (portfd[i] != -1)
ddio_SerialClosePort((tSerialPort)&portfd[i]);
} // for
DDIO_init = false;
Lnx_app_obj = NULL;
} // if
mprintf((0, "DDIO: ddio_InternalClose() returning."));
}
void ddio_DebugMessage(unsigned err, char *fmt, ...) {
char buf[128];
va_list arglist;
va_start(arglist, fmt);
vsnprintf(buf, sizeof(buf), fmt, arglist);
va_end(arglist);
mprintf((0, "%s\n", buf));
}
// takes port number 1-4, returns a port object
tSerialPort ddio_SerialOpenPort(int port_number, int baud) {
#if MACOSX
return NULL;
#else
char devName[50];
struct termios newtio;
unsigned long _baud;
mprintf((0, "DDIO: ddio_SerialOpenPort(%d) called.", port_number));
if ((port_number < 0) || (port_number > 3))
return (NULL);
if (baud == 1200)
_baud = B1200;
else if (baud == 2400)
_baud = B2400;
else if (baud == 4800)
_baud = B4800;
else if (baud == 9600)
_baud = B9600;
else if (baud == 19200)
_baud = B19200;
else if (baud == 38400)
_baud = B38400;
else if (baud == 57600)
_baud = B57600;
else if (baud == 115200)
_baud = B115200;
else
return (NULL);
snprintf(devName, sizeof(devName), "/dev/ttyS%d", port_number);
int fd = open(devName, O_RDWR | O_NOCTTY | O_SYNC | O_NONBLOCK);
if (fd == -1) {
mprintf((0, "DDIO: ddio_SerialOpenPort(%d) FAILED.", port_number));
return (NULL);
} // if
mprintf((0, "DDIO: opened file descriptor is (%d).", fd));
portfd[port_number] = fd;
tcgetattr(fd, &oldtio[port_number]);
memset(&newtio, '\0', sizeof(newtio));
newtio.c_cflag = _baud | CLOCAL | CS8; //_baud | CRTSCTS | CLOCAL | CS8;
newtio.c_iflag = 0; // IGNPAR | IGNBRK;
newtio.c_oflag = 0;
newtio.c_lflag = 0; // ICANON;
newtio.c_cc[VINTR] = 0; /* Ctrl-c */
newtio.c_cc[VQUIT] = 0; /* Ctrl-\ */
newtio.c_cc[VERASE] = 0; /* del */
newtio.c_cc[VKILL] = 0; /* @ */
newtio.c_cc[VEOF] = 4; /* Ctrl-d */
newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
newtio.c_cc[VMIN] = 1; /* blocking read until 1 character arrives */
newtio.c_cc[VSWTC] = 0; /* '\0' */
newtio.c_cc[VSTART] = 0; /* Ctrl-q */
newtio.c_cc[VSTOP] = 0; /* Ctrl-s */
newtio.c_cc[VSUSP] = 0; /* Ctrl-z */
newtio.c_cc[VEOL] = 0; /* '\0' */
newtio.c_cc[VREPRINT] = 0; /* Ctrl-r */
newtio.c_cc[VDISCARD] = 0; /* Ctrl-u */
newtio.c_cc[VWERASE] = 0; /* Ctrl-w */
newtio.c_cc[VLNEXT] = 0; /* Ctrl-v */
newtio.c_cc[VEOL2] = 0; /* '\0' */
tcflush(fd, TCIOFLUSH);
tcsetattr(fd, TCSANOW, &newtio);
mprintf((0, "DDIO: ddio_SerialOpenPort(%d) succeeded.", port_number));
return (&portfd[port_number]);
#endif
}
// takes port structure and frees it.
void ddio_SerialClosePort(tSerialPort port) {
#if !MACOSX
int fd = *((int *)port);
int index = (int)((((char *)port) - ((char *)&portfd)) / sizeof(int));
mprintf((0, "DDIO: ddio_SerialClosePort(comport == %d) called.", index));
mprintf((0, "DDIO: Serial port file descriptor to close is (%d).", fd));
if (fd != -1) {
tcsetattr(fd, TCSANOW, &oldtio[index]);
close(fd);
*((int *)port) = -1;
} // if
#endif
}
// writes one byte. true return value means it worked.
bool ddio_SerialWriteByte(tSerialPort port, ubyte b) {
#if MACOSX
return false;
#else
int fd = *((int *)port);
bool retVal = ((write(fd, &b, sizeof(b)) == sizeof(b)) ? true : false);
if (retVal == false) {
mprintf((0, "DDIO: Writing byte (%u) to descriptor (%d) failed!", (unsigned int)b, fd));
} // if
return (retVal);
#endif
}