/**************************************************************************** * lib/termios/lib_cfsetospeed.c * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Private Variables ****************************************************************************/ /**************************************************************************** * Public Variables ****************************************************************************/ /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: cfsetospeed * * Descripton: * The cfsetospeed() function sets the output baud rate stored in the * structure pointed to by termios_p to speed. * * There is no effect on the baud rates set in the hardware until a * subsequent successful call to tcsetattr() on the same termios structure. * * NON STANDARD BEHAVIOR. In Nuttx, the speed_t is defined to be uint32_t * and the baud encodings of termios.h are the actual baud values * themselves. Therefore, any baud value can be provided as the speed * argument here. However, if you do so, your code will *NOT* be portable * to other environments where speed_t is smaller and where the termios.h * baud values are encoded! To avoid portability issues, use the baud * definitions in termios.h! * * Input Parameters: * termiosp - The termiosp argument is a pointer to a termios structure. * speed - The new output speed * * Returned Value: * Baud is not checked... OK is always returned. * ****************************************************************************/ int cfsetospeed(struct termios *termios_p, speed_t speed) { DEBUGASSERT(termios_p); termios_p->c_ospeed = speed; return OK; }