Completes coding of the PWM module

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
2026-10-17 20:53:35 +08:00 · 2011-12-19 19:24:09 +00:00
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+/***************************************************************************
+ * include/paslib.h
+ * External Declarations associated with paslib
+ *
+ *   Copyright (C) 2008-2009 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 __PASLIB_H
+#define __PASLIB_H
+
+/***************************************************************************
+ * Included Files
+ ***************************************************************************/
+
+#include "keywords.h"
+#include "stdint.h"
+#include "stdbool.h"
+#include "pdefs.h"
+#include "pofflib.h"
+
+/***************************************************************************
+ * Global Function Prototypes
+ ***************************************************************************/
+
+/* POFF file is always big-endian */
+
+#ifdef CONFIG_ENDIAN_BIG
+# undef  CONFIG_POFF_SWAPNEEDED
+# define poff16(val) (val)
+# define poff32(val) (val)
+#else
+# define CONFIG_POFF_SWAPNEEDED 1
+# define poff16(val) poffSwap16(val)
+# define poff32(val) poffSwap32(val)
+#endif
+
+/***************************************************************************
+ * Global Function Prototypes
+ ***************************************************************************/
+
+/* File name extension helper */
+
+extern bool     extension(const char *inName, const char *ext, char *outName,
+                          bool force_default);
+
+/* Math helpers */
+
+extern int32_t  signExtend16(uint16_t arg16);
+extern int32_t  signExtend25(uint32_t arg25);
+
+/* Endian-ness helpers */
+
+extern uint16_t poffSwap16(uint16_t val);
+extern uint32_t poffSwap32(uint32_t val);
+
+/***************************************************************************
+ * Global Variables
+ ***************************************************************************/
+
+#endif /* __PASLIB_H */
+