Combine cfset[o|i]speed to cfsetspeed; combine cfget[o|i]speed for cfgetspeed

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4975 7fd9a85b-ad96-42d3-883c-3090e2eb8679

1 files changed, 93 insertions, 0 deletions

diff --git a/nuttx/lib/termios/lib_cfgetspeed.c b/nuttx/lib/termios/lib_cfgetspeed.c
new file mode 100644
index 000000000..d7f0dc473
--- /dev/null
+++ b/nuttx/lib/termios/lib_cfgetspeed.c
@@ -0,0 +1,93 @@
+/****************************************************************************
+ * lib/termios/lib_cfgetspeed.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 <termios.h>
+#include <assert.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: cfgetspeed
+ *
+ * Descripton:
+ *   The cfgetspeed() function is a non-POSIX function will extract the baud
+ *   from the termios structure to which the termiosp argument points.
+ *
+ *   This function will return exactly the value in the termios data
+ *   structure, without interpretation.
+ *
+ *   NOTE 1: NuttX does not control input/output baud independently.  Both
+ *   must be the same.  The POSIX standard interfaces, cfisetispeed() and
+ *   cfisetospeed() are defined to be cfgetspeed() in termios.h.
+ *   NOTE 2.  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 may be returned here... not just those enumerated in
+ *   termios.h
+ *
+ * Input Parameters:
+ *   termiosp - The termiosp argument is a pointer to a termios structure.
+ *
+ * Returned Value:
+ *   Encoded baud value from the termios structure. 
+ *
+ ****************************************************************************/
+
+speed_t cfgetspeed(FAR const struct termios *termiosp)
+{
+  DEBUGASSERT(termiosp);
+  return termiosp->c_speed;
+}