mirror of
https://github.com/apache/nuttx.git
synced 2026-09-28 03:09:13 +08:00
Add support for extended BAUD settings
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4967 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -36,7 +36,15 @@
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TERMIOS_SRCS =
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ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
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# POSIX standard interfaces
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TERMIOS_SRCS += lib_cfgetispeed.c lib_cfgetospeed.c lib_cfsetispeed.c
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TERMIOS_SRCS += lib_cfsetospeed.c lib_tcflush.c lib_tcgetattr.c
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TERMIOS_SRCS += lib_tcsetattr.c
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# Non-standard AIX-like interfaces
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TERMIOS_SRCS += lib_getspeed.c lib_resetspeed.c lib_setspeed.c
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endif
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@@ -0,0 +1,118 @@
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/****************************************************************************
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* lib/termios/lib_getspeed.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/str_tty.h>
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#include <sys/ioctl.h>
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#include <nuttx/serial/tioctl.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Variables
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: get_speed
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*
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* Descripton:
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* set_speed(), get_speed(), and reset_speed are non-standard AIX-like
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* interfaces to simplify TTY baud rate operations.
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*
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* The baud rate functions set_speed() and get_speed() are provided to
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* allow the applications to program any value of the baud rate that is
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* supported by the serial driver, but that cannot be expressed using
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* the termios subroutines cfsetospeed, cfsetispeed, cfgetospeed,
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* and cfsgetispeed. Those subroutines are limited to the set of values
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* defined termios.h.
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*
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* Normal mode: This is the default mode, in which a termios supported
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* speed is in use.
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*
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* Speed-extended mode: This mode is entered by calling set_speed() with
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* a non-termios supported speed at the configuration of the line. In this
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* mode, all the calls to tcgetattr subroutine or TCGETS ioctl subroutine
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* will have B50 in the returned termios structure.
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*
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* If tcsetattr() or TCSETS, TCSETAF, or TCSETAW ioctl calls the driver
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* and attempts to set B50, the actual baud rate is not changed. If it
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* attempts to set any other termios-supported speed, will switch back
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* to the normal mode and the requested baud rate is set. Calling
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* reset_speed subroutine is another way to switch back to the
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* normal mode.
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*
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* Input Parameters:
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* fd - The 'fd' argument is an open file descriptor associated with a
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* terminal.
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*
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* Returned Value:
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* Upon successful completion, the extended baud is returned. Otherwise,
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* -1 is returned and errno is set to indicate the error.
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*
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****************************************************************************/
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int32_t get_speed(int fd)
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{
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int32_t speed;
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int ret;
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ret = ioctl(fd, TIOCGETSPEED, (unsigned long)((uintptr_t)&speed));
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if (ret < 0)
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{
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return (int32_t)ret;
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}
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return speed;
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}
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@@ -0,0 +1,109 @@
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/****************************************************************************
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* lib/termios/lib_resetspeed.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/str_tty.h>
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#include <sys/ioctl.h>
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#include <nuttx/serial/tioctl.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Variables
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: reset_speed
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*
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* Descripton:
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* set_speed(), get_speed(), and reset_speed are non-standard AIX-like
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* interfaces to simplify TTY baud rate operations.
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*
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* The baud rate functions set_speed() and get_speed() are provided to
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* allow the applications to program any value of the baud rate that is
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* supported by the serial driver, but that cannot be expressed using
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* the termios subroutines cfsetospeed, cfsetispeed, cfgetospeed,
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* and cfsgetispeed. Those subroutines are limited to the set of values
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* defined termios.h.
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*
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* Normal mode: This is the default mode, in which a termios supported
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* speed is in use.
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*
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* Speed-extended mode: This mode is entered by calling set_speed() with
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* a non-termios supported speed at the configuration of the line. In this
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* mode, all the calls to tcgetattr subroutine or TCGETS ioctl subroutine
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* will have B50 in the returned termios structure.
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*
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* If tcsetattr() or TCSETS, TCSETAF, or TCSETAW ioctl calls the driver
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* and attempts to set B50, the actual baud rate is not changed. If it
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* attempts to set any other termios-supported speed, will switch back
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* to the normal mode and the requested baud rate is set. Calling
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* reset_speed subroutine is another way to switch back to the
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* normal mode.
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*
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* Input Parameters:
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* fd - The 'fd' argument is an open file descriptor associated with a terminal.
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* cmd - The TCFLSH ioctl argument.
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*
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* Returned Value:
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* Upon successful completion, 0 is returned. Otherwise, -1 is returned and
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* errno is set to indicate the error.
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*
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****************************************************************************/
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int reset_speed(int fd)
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{
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return ioctl(fd, TIOCRESETSPEED, 0L);
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}
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@@ -0,0 +1,110 @@
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/****************************************************************************
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* lib/termios/lib_setspeed.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
|
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* used to endorse or promote products derived from this software
|
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* without specific prior written permission.
|
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/str_tty.h>
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#include <sys/ioctl.h>
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#include <nuttx/serial/tioctl.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Variables
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: set_speed
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*
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* Descripton:
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* set_speed(), get_speed(), and reset_speed are non-standard AIX-like
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* interfaces to simplify TTY baud rate operations.
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*
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* The baud rate functions set_speed() and get_speed() are provided to
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* allow the applications to program any value of the baud rate that is
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* supported by the serial driver, but that cannot be expressed using
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* the termios subroutines cfsetospeed, cfsetispeed, cfgetospeed,
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* and cfsgetispeed. Those subroutines are limited to the set of values
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* defined termios.h.
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*
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* Normal mode: This is the default mode, in which a termios supported
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* speed is in use.
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*
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* Speed-extended mode: This mode is entered by calling set_speed() with
|
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* a non-termios supported speed at the configuration of the line. In this
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* mode, all the calls to tcgetattr subroutine or TCGETS ioctl subroutine
|
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* will have B50 in the returned termios structure.
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*
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* If tcsetattr() or TCSETS, TCSETAF, or TCSETAW ioctl calls the driver
|
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* and attempts to set B50, the actual baud rate is not changed. If it
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* attempts to set any other termios-supported speed, will switch back
|
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* to the normal mode and the requested baud rate is set. Calling
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* reset_speed subroutine is another way to switch back to the
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* normal mode.
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*
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* Input Parameters:
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* fd - The 'fd' argument is an open file descriptor associated with a
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* terminal.
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* speed - The new, extended baud
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*
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* Returned Value:
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* Upon successful completion, 0 is returned. Otherwise, -1 is returned and
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* errno is set to indicate the error.
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*
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****************************************************************************/
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int set_speed(int fd, int32_t speed)
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{
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return ioctl(fd, TIOCSETSPEED, (unsigned long)speed);
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}
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@@ -84,7 +84,5 @@
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int tcflush(int fd, int cmd)
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{
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/* Not yet implemented */
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return ioctl(fd, TCFLSH, (unsigned long)cmd);
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}
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