along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#ifdef __GO32__
+/* Terminal state pointer. This is specific to each type of interface. */
-/* Then you use the asynctsr */
+typedef PTR ttystate;
-struct ttystate {
- /* No members */
-};
-
-#else
-#ifdef HAVE_TERMIO
-
-#include <termios.h>
-#include <unistd.h>
-
-struct ttystate
+struct _serial_t
{
- int flags; /* Flags from fcntl F_GETFL */
- struct termios termios; /* old tty driver settings */
+ int fd; /* File descriptor */
+ struct serial_ops *ops; /* Function vector */
+ ttystate ttystate; /* Not used (yet) */
+ int bufcnt; /* Amount of data in receive buffer */
+ unsigned char *bufp; /* Current byte */
+ unsigned char buf[BUFSIZ]; /* Da buffer itself */
+ int current_timeout; /* (termio{s} only), last value of VTIME */
};
-#else /* not HAVE_TERMIO */
+typedef struct _serial_t *serial_t;
+
+struct serial_ops {
+ char *name;
+ struct serial_ops *next;
+ int (*open) PARAMS ((serial_t, const char *name));
+ void (*close) PARAMS ((serial_t));
+ int (*readchar) PARAMS ((serial_t, int timeout));
+ int (*write) PARAMS ((serial_t, const char *str, int len));
+ void (*go_raw) PARAMS ((serial_t));
+ void (*restore) PARAMS ((serial_t));
+ int (*setbaudrate) PARAMS ((serial_t, int rate));
+};
-#include <sgtty.h>
+/* Add a new serial interface to the interface list */
-struct ttystate {
- int flags; /* Flags from fcntl F_GETFL */
- struct sgttyb sgttyb; /* old tty driver settings */
-};
+void serial_add_interface PARAMS ((struct serial_ops *optable));
-#endif /* not HAVE_TERMIO */
-#endif
-/* Return a sensible default name for a serial device, something which
- can be used as an argument to serial_open. */
-
-const char *serial_default_name PARAMS ((void));
+serial_t serial_open PARAMS ((const char *name));
-/* Try to open the serial device "name", return 1 if ok, 0 if not. */
+/* For most routines, if a failure is indicated, then errno should be
+ examined. */
-int serial_open PARAMS ((const char *name));
+/* Try to open NAME. Returns a new serial_t on success, NULL on failure.
+ */
-/* Turn the port into raw mode. */
+#define SERIAL_OPEN(NAME) serial_open(NAME)
-void serial_raw PARAMS ((int fd, struct ttystate *oldstate));
+/* Turn the port into raw mode. */
-/* Turn the port into normal mode. */
+#define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
-void serial_normal PARAMS ((void));
+/* Read one char from the serial device with TIMEOUT seconds timeout.
+ Returns char if ok, else one of the following codes. Note that all
+ error codes are guaranteed to be < 0. */
-/* Read one char from the serial device with <TO>-second timeout.
- Returns char if ok, else EOF, -2 for timeout, -3 for anything else */
+#define SERIAL_ERROR -1 /* General error, see errno for details */
+#define SERIAL_TIMEOUT -2
+#define SERIAL_EOF -3
-int serial_readchar PARAMS ((int to));
+#define SERIAL_READCHAR(SERIAL_T, TIMEOUT) ((SERIAL_T)->ops->readchar((SERIAL_T), TIMEOUT))
-/* Set the baudrate to the decimal value supplied, and return 1, or fail and
- return 0. */
+/* Set the baudrate to the decimal value supplied. Returns 0 for success,
+ -1 for failure. */
-int serial_setbaudrate PARAMS ((int rate));
+#define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
-/* Return the next rate in the sequence, or return 0 for failure. */
+/* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for success,
+ -1 for failure. */
-/* Write some chars to the device, returns 0 for failure. See errno for
- details. */
+#define SERIAL_WRITE(SERIAL_T, STRING, LEN) ((SERIAL_T)->ops->write((SERIAL_T), STRING, LEN))
-int serial_write PARAMS ((const char *str, int len));
+/* Push out all buffers, close the device and destroy SERIAL_T. */
-/* Close the serial port */
+void serial_close PARAMS ((serial_t));
-void serial_close PARAMS ((void));
+#define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T)
-/* Restore the serial port to the state saved in oldstate */
+/* Restore the serial port to the state saved in oldstate. XXX - currently
+ unused! */
-void serial_restore PARAMS ((int desc, struct ttystate *oldstate));
+#define SERIAL_RESTORE(SERIAL_T) (SERIAL_T)->ops->restore((SERIAL_T))