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authorJoel Sherrill <joel.sherrill@OARcorp.com>1998-11-19 16:06:46 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1998-11-19 16:06:46 +0000
commitc4dddee3f5d2714e0a5cb9a137cb01e7cf2adf2a (patch)
tree4ff7c2624fe2f3d21024fd67d15dbb78a03e934e /doc/posix_users/device.t
parentNew files (diff)
downloadrtems-c4dddee3f5d2714e0a5cb9a137cb01e7cf2adf2a.tar.bz2
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+@c
+@c COPYRIGHT (c) 1988-1998.
+@c On-Line Applications Research Corporation (OAR).
+@c All rights reserved.
+@c
+@c $Id$
+@c
+
+@chapter Device- and Class- Specific Functions Manager
+
+@section Introduction
+
+The device- and class- specific functions manager is ...
+
+The directives provided by the device- and class- specific functions
+manager are:
+
+@itemize @bullet
+@item @code{cfgetispeed} - Reads terminal input baud rate
+@item @code{cfgetospeed} - Reads terminal output baud rate
+@item @code{cfsetispeed} - Sets terminal input baud rate
+@item @code{cfsetospeed} - Set terminal output baud rate
+@item @code{tcgetattr} - Gets terminal attributes
+@item @code{tcsetattr} - Set terminal attributes
+@item @code{tcsendbreak} - Sends a break to a terminal
+@item @code{tcdrain} - Waits for all output to be transmitted to the terminal
+@item @code{tcflush} - Discards terminal data
+@item @code{tcflow} - Suspends/restarts terminal output
+@item @code{tcgetpgrp} - Gets foreground process group ID
+@item @code{tcsetpgrp} - Sets foreground process group ID
+@end itemize
+
+@section Background
+
+There is currently no text in this section.
+
+@section Operations
+
+There is currently no text in this section.
+
+@section Directives
+
+This section details the device- and class- specific functions manager's
+directives. A subsection is dedicated to each of this manager's directives
+and describes the calling sequence, related constants, usage,
+and status codes.
+
+@page
+@subsection cfgetispeed - Reads terminal input baud rate
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+#include <termios.h>
+
+int cfgetispeed(
+ const struct termios *p
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+The @code{cfgetispeed()} function returns a code for baud rate.
+
+@subheading DESCRIPTION:
+
+The @code{cfsetispeed()} function stores a code for the terminal speed
+stored in a struct termios. The codes are defined in @code{<termios.h>}
+by the macros BO, B50, B75, B110, B134, B150, B200, B300, B600, B1200,
+B1800, B2400, B4800, B9600, B19200, and B38400.
+
+The @code{cfsetispeed()} function does not do anything to the hardware.
+It merely stores a value for use by @code{tcsetattr()}.
+
+@subheading NOTES:
+
+Baud rates are defined by symbols, such as B110, B1200, B2400. The actual
+number returned for any given speed may change from system to system.
+
+@page
+@subsection cfgetospeed - Reads terminal output baud rate
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+#include <termios.h>
+
+int cfgetospeed(
+ const struct termios *p
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+The @code{cfgetospeed()} function returns the termios code for the baud rate.
+
+@subheading DESCRIPTION:
+
+The @code{cfgetospeed()} function returns a code for the terminal speed
+stored in a @code{struct termios}. The codes are defined in @code{<termios.h>}
+by the macros BO, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800,
+B2400, B4800, B9600, B19200, and B38400.
+
+The @code{cfgetospeed()} function does not do anything to the hardware.
+It merely returns the value stored by a previous call to @code{tcgetattr()}.
+
+@subheading NOTES:
+
+Baud rates are defined by symbols, such as B110, B1200, B2400. The actual
+number returned for any given speed may change from system to system.
+
+@page
+@subsection cfsetispeed - Sets terminal input baud rate
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+#include <termios.h>
+
+int cfsetispeed(
+ struct termios *p,
+ speed_t speed
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+The @code{cfsetispeed()} function returns a zero when successful and
+returns -1 when an error occurs.
+
+@subheading DESCRIPTION:
+
+The @code{cfsetispeed()} function stores a code for the terminal speed
+stored in a struct termios. The codes are defined in @code{<termios.h>}
+by the macros B0, B50, B75, B110, B134, B150, B200, B300, B600, B1200,
+B1800, B2400, B4800, B9600, B19200, and B38400.
+
+@subheading NOTES:
+
+This function merely stores a value in the @code{termios} structure. It
+does not change the terminal speed until a @code{tcsetattr()} is done.
+It does not detect impossible terminal speeds.
+
+@page
+@subsection cfsetospeed - Sets terminal output baud rate
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+#include <termios.h>
+
+int cfsetospeed(
+ struct termios *p,
+ speed_t speed
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+The @code{cfsetospeed()} function returns a zero when successful and
+returns -1 when an error occurs.
+
+
+@subheading DESCRIPTION:
+
+The @code{cfsetospeed()} function stores a code for the terminal speed stored
+in a struct @code{termios}. The codes are defiined in @code{<termios.h>} by the
+macros B0, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800, B2400,
+B4800, B9600, B19200, and B38400.
+
+The @code{cfsetospeed()} function does not do anything to the hardware. It
+merely stores a value for use by @code{tcsetattr()}.
+
+@subheading NOTES:
+
+This function merely stores a value in the @code{termios} structure.
+It does not change the terminal speed until a @code{tcsetattr()} is done.
+It does not detect impossible terminal speeds.
+
+@page
+@subsection tcgetattr - Gets terminal attributes
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+#include <termios.h>
+#include <unistd.h>
+
+int tcgetattr(
+ int fildes,
+ struct termios *p
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item EBADF
+Invalid file descriptor
+
+@item ENOOTY
+Terminal control function attempted for a file that is not a terminal.
+@end table
+
+@subheading DESCRIPTION:
+
+The @code{tcgetattr()} gets the parameters associated with the terminal
+referred to by @code{fildes} and stores them into the @code{termios()}
+structure pointed to by @code{termios_p}.
+
+@subheading NOTES:
+
+NONE
+
+@page
+@subsection tcsetattr - Set terminal attributes
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+#include <termios.h>
+#include <unistd.h>
+
+int tcsetattr(
+ int fildes,
+ int options,
+ const struct termios *tp
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item E
+The
+
+@end table
+
+@subheading DESCRIPTION:
+
+@subheading NOTES:
+
+@page
+@subsection tcsendbreak - Sends a break to a terminal
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+int tcsendbreak(
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item E
+The
+
+@end table
+
+@subheading DESCRIPTION:
+
+@subheading NOTES:
+
+This routine is not currently supported by RTEMS but could be
+in a future version.
+
+@page
+@subsection tcdrain - Waits for all output to be transmitted to the terminal.
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+#include <termios.h>
+#include <unistd.h>
+
+int tcdrain(
+ int fildes
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item EBADF
+Invalid file descriptor
+
+@item EINTR
+Function was interrupted by a signal
+
+@item ENOTTY
+Terminal control function attempted for a file that is not a terminal.
+
+@end table
+
+@subheading DESCRIPTION:
+
+The @code{tcdrain()} function waits until all output written to
+@code{fildes} has been transmitted.
+
+@subheading NOTES:
+
+NONE
+
+@page
+@subsection tcflush - Discards terminal data
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+int tcflush(
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item E
+The
+
+@end table
+
+@subheading DESCRIPTION:
+
+@subheading NOTES:
+
+This routine is not currently supported by RTEMS but could be
+in a future version.
+
+@page
+@subsection tcflow - Suspends/restarts terminal output.
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+int tcflow(
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item E
+The
+
+@end table
+
+@subheading DESCRIPTION:
+
+@subheading NOTES:
+
+This routine is not currently supported by RTEMS but could be
+in a future version.
+
+@page
+@subsection tcgetpgrp - Gets foreground process group ID
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+int tcgetpgrp(
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item E
+The
+
+@end table
+
+@subheading DESCRIPTION:
+
+@subheading NOTES:
+
+This routine is not currently supported by RTEMS but could be
+in a future version.
+
+@page
+@subsection tcsetpgrp - Sets foreground process group ID
+
+@subheading CALLING SEQUENCE:
+
+@ifset is-C
+@example
+int tcsetpgrp(
+);
+@end example
+@end ifset
+
+@ifset is-Ada
+@end ifset
+
+@subheading STATUS CODES:
+
+@table @b
+@item E
+The
+
+@end table
+
+@subheading DESCRIPTION:
+
+@subheading NOTES:
+
+This routine is not currently supported by RTEMS but could be
+in a future version.
+
+