+/*
+ * freeglut_input_devices_x11.c
+ *
+ * Handles miscellaneous input devices via direct serial-port access.
+ * Proper X11 XInput device support is not yet supported.
+ * Also lacks Mac support.
+ *
+ * Written by Joe Krahn <krahn@niehs.nih.gov> 2005
+ *
+ * Copyright (c) 2005 Stephen J. Baker. All Rights Reserved.
+ * Copied for Platform code by Evan Felix <karcaw at gmail.com>
+ * Creation date: Thur Feb 2 2012
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * PAWEL W. OLSZTA OR STEPHEN J. BAKER BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <GL/freeglut.h>
+#include "../Common/freeglut_internal.h"
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <fcntl.h>
+
+struct _serialport {
+ int fd;
+ struct termios termio, termio_save;
+};
+
+typedef struct _serialport SERIALPORT;
+
+void serial_flush ( SERIALPORT *port );
+
+/* local variables */
+static SERIALPORT *dialbox_port=NULL;
+
+/*****************************************************************/
+
+/*
+ * Try initializing the input device(s)
+ */
+void fgPlatformRegisterDialDevice ( const char *dial_device )
+{
+}
+
+SERIALPORT *serial_open ( const char *device )
+{
+ int fd;
+ struct termios termio;
+ SERIALPORT *port;
+
+ fd = open(device, O_RDWR | O_NONBLOCK );
+ if (fd <0) {
+ perror(device);
+ return NULL;
+ }
+
+ port = malloc(sizeof(SERIALPORT));
+ memset(port, 0, sizeof(SERIALPORT));
+ port->fd = fd;
+
+ /* save current port settings */
+ tcgetattr(fd,&port->termio_save);
+
+ memset(&termio, 0, sizeof(termio));
+ termio.c_cflag = CS8 | CREAD | HUPCL ;
+ termio.c_iflag = IGNPAR | IGNBRK ;
+ termio.c_cc[VTIME] = 0; /* inter-character timer */
+ termio.c_cc[VMIN] = 1; /* block read until 1 chars received, when blocking I/O */
+
+ cfsetispeed(&termio, B9600);
+ cfsetospeed(&termio, B9600);
+ tcsetattr(fd,TCSANOW,&termio);
+
+ serial_flush(port);
+ return port;
+}
+
+void serial_close(SERIALPORT *port)
+{
+ if (port)
+ {
+ /* restore old port settings */
+ tcsetattr(port->fd,TCSANOW,&port->termio_save);
+ close(port->fd);
+ free(port);
+ }
+}
+
+int serial_getchar(SERIALPORT *port)
+{
+ unsigned char ch;
+ if (!port) return EOF;
+ if (read(port->fd,&ch,1)) return ch;
+ return EOF;
+}
+
+int serial_putchar(SERIALPORT *port, unsigned char ch)
+{
+ if (!port) return 0;
+ return write(port->fd,&ch,1);
+}
+
+void serial_flush ( SERIALPORT *port )
+{
+ tcflush ( port->fd, TCIOFLUSH );
+}