Completes coding of the PWM module

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
2026-10-21 01:13:35 +08:00 · 2011-12-19 19:24:09 +00:00
commit add995c32e
4394 changed files with 1077774 additions and 0 deletions
@@ -0,0 +1,194 @@
+/********************************************************************************
+ * include/limits.h
+ *
+ *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ********************************************************************************/
+
+#ifndef __INCLUDE_LIMITS_H
+#define __INCLUDE_LIMITS_H
+
+/********************************************************************************
+ * Included Files
+ ********************************************************************************/
+
+#include <nuttx/config.h>
+
+/* Architecture specific limits */
+
+#include <arch/limits.h>
+
+/********************************************************************************
+ * Pre-processor Definitions
+ ********************************************************************************/
+
+/* Configurable limits required by POSIX
+ *
+ * Required for all implementations:
+ *
+ *   _POSIX_ARG_MAX        Total length of string arguments
+ *   _POSIX_CHILD_MAX      Number of child tasks active
+ *   _POSIX_LINK_MAX       The number of links a file can have
+ *   _POSIX_MAX_CANON      Number bytes in TTY canonical input queue
+ *   _POSIX_MAX_INPUT      Number bytes in TTY canonical input queue
+ *   _POSIX_NAME_MAX       Number of bytes in a file or pathname component
+ *   _POSIX_NGROUPS_MAX    Number supplementary group IDs
+ *   _POSIX_OPEN_MAX       Number of files a task can have open at once
+ *   _POSIX_PATH_MAX       Number of bytes in a full pathname
+ *   _POSIX_PIPE_BUF       Number of bytes for atomic write into pipe
+ *   _POSIX_SSIZE_MAX      Largest filesystem write; also max value of ssize_t
+ *   _POSIX_STREAM_MAX     Number of std I/O streams open at once
+ *   _POSIX_TZNAME_MAX     Max number of bytes of a timezone name
+ *
+ * Required for sigqueue
+ *
+ *   _POSIX_RTSIG_MAX      Difference between SIGRTMIN and SIGRTMAX
+ *   _POSIX_SIGQUEUE_MAX   Max number signals a task can queue
+ *
+ * Required for POSIX timers
+ *
+ *   _POSIX_DELAYTIMER_MAX Max number timer overruns
+ *   _POSIX_TIMER_MAX      Max number of timers per task
+ *   _POSIX_CLOCKRES_MIN   Clock resolution in nanoseconds
+ *
+ * Required for asynchronous I/O
+ *
+ *   _POSIX_AIO_LISTIO_MAX Max number of AIOs in single listio call
+ *   _POSIX_AIO_MAX        Max number of simultaneous AIO operations
+ *
+ * Required for POSIX message passing
+ *
+ *   _POSIX_MQ_OPEN_MAX    Max number message queues task may open (mq_open)
+ *   _POSIX_MQ_PRIO_MAX    Max message priority (mq_send)
+ *
+ * Required for POSIX semaphores
+ *
+ *   _POSIX_SEM_NSEMS_MAX  Max number of open semaphores per task
+ *   _POSIX_SEM_VALUE_MAX  Max value a semaphore may have
+ */
+
+#define _POSIX_ARG_MAX        4096
+#define _POSIX_CHILD_MAX      6
+#define _POSIX_LINK_MAX       8
+#define _POSIX_MAX_CANON      255
+#define _POSIX_MAX_INPUT      255
+#define _POSIX_NAME_MAX       CONFIG_NAME_MAX
+#define _POSIX_NGROUPS_MAX    0
+#define _POSIX_OPEN_MAX       CONFIG_NFILE_DESCRIPTORS
+#define _POSIX_PATH_MAX       255
+#define _POSIX_PIPE_BUF       512
+#define _POSIX_SSIZE_MAX      INT_MAX
+#define _POSIX_STREAM_MAX     CONFIG_NFILE_STREAMS
+#define _POSIX_TZNAME_MAX     3
+
+/* Requred for sigqueue */
+
+#define _POSIX_RTSIG_MAX      31
+#define _POSIX_SIGQUEUE_MAX   32
+
+/* Required for POSIX timers.
+ *
+ * _POSIX_DELAYTIMER_MAX is the number of timer expiration overruns.
+ *
+ * _POSIX_TIMER_MAX is the per-process number of timers.
+ *
+ * _POSIX_CLOCKRES_MIN is the resolution of the CLOCK_REALTIME clock in nanoseconds.
+ * CLOCK_REALTIME is controlled by the NuttX system time.  The default value is the
+ * system timer which has a resolution of 10 milliseconds.  This default setting can
+ * be overridden by defining the clock interval in milliseconds as CONFIG_MSEC_PER_TICK
+ * in the board configuration file.
+ */
+
+#define _POSIX_DELAYTIMER_MAX 32
+#define _POSIX_TIMER_MAX      32
+
+#ifdef CONFIG_MSEC_PER_TICK
+# define _POSIX_CLOCKRES_MIN  ((CONFIG_MSEC_PER_TICK)*1000000)
+#else
+# define _POSIX_CLOCKRES_MIN  (10*1000000)
+#endif
+
+/* Required for asynchronous I/O */
+
+#define _POSIX_AIO_LISTIO_MAX 2
+#define _POSIX_AIO_MAX        1
+
+/* Required for POSIX message passing */
+
+#define _POSIX_MQ_OPEN_MAX    8
+#define _POSIX_MQ_PRIO_MAX    UCHAR_MAX
+
+/* Required for POSIX semaphores */
+
+#define _POSIX_SEM_NSEMS_MAX  INT_MAX
+#define _POSIX_SEM_VALUE_MAX  0x7fff
+
+/* Actual limits.  These values may be increased from the POSIX minimum
+ * values above or made indeterminate
+ */
+
+#define ARG_MAX        _POSIX_ARG_MAX
+#define CHILD_MAX      _POSIX_CHILD_MAX
+#define LINK_MAX       _POSIX_LINK_MAX
+#define MAX_CANON      _POSIX_MAX_CANON
+#define MAX_INPUT      _POSIX_MAX_INPUT
+#define NAME_MAX       _POSIX_NAME_MAX
+#define NGROUPS_MAX    _POSIX_NGROUPS_MAX
+#define OPEN_MAX       _POSIX_OPEN_MAX
+#define PATH_MAX       _POSIX_PATH_MAX
+#define PIPE_BUF       _POSIX_PIPE_BUF
+#define SSIZE_MAX      _POSIX_SSIZE_MAX
+#define STREAM_MAX     _POSIX_STREAM_MAX
+#define TZNAME_MAX     _POSIX_TZNAME_MAX
+
+#define RTSIG_MAX      _POSIX_RTSIG_MAX
+#define SIGQUEUE_MAX   _POSIX_SIGQUEUE_MAX
+
+#define DELAYTIMER_MAX _POSIX_DELAYTIMER_MAX
+#define TIMER_MAX      _POSIX_TIMER_MAX
+#define CLOCKRES_MIN   _POSIX_CLOCKRES_MIN
+
+/* Required for asynchronous I/O */
+
+#define AIO_LISTIO_MAX _POSIX_AIO_LISTIO_MAX
+#define AIO_MAX        _POSIX_AIO_MAX
+
+/* Required for POSIX message passing */
+
+#define MQ_OPEN_MAX    _POSIX_MQ_OPEN_MAX
+#define MQ_PRIO_MAX    _POSIX_MQ_PRIO_MAX
+
+/* Required for POSIX semaphores */
+
+#define SEM_NSEMS_MAX  _POSIX_SEM_NSEMS_MAX
+#define SEM_VALUE_MAX  _POSIX_SEM_VALUE_MAX
+
+#endif /* __INCLUDE_LIMITS_H */