Diff: common_header.h

Revision:

0:39b7f3158ebe

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/common_header.h	Thu Apr 05 21:26:10 2018 +0000
@@ -0,0 +1,79 @@
+/**************************************************************************/
+/*!
+    @file     common_header.h
+    @author   hathach
+
+    @section LICENSE
+
+    Software License Agreement (BSD License)
+
+    Copyright (c) 2016, Adafruit Industries (adafruit.com)
+    All rights reserved.
+
+    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 of the copyright holders 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 ''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 HOLDER 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 _COMMON_HEADER_H_
+#define _COMMON_HEADER_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+//--------------------------------------------------------------------+
+// COMPILER
+//--------------------------------------------------------------------+
+#define STRING_(x)                  #x                   // stringify without expand
+#define XSTRING_(x)                 STRING_(x)           // expand then stringify
+#define STRING_CONCAT_(a, b)        a##b                 // concat without expand
+#define XSTRING_CONCAT_(a, b)       STRING_CONCAT_(a, b) // expand then concat
+
+#define ATTR_PACKED               __attribute__ ((packed))
+
+//--------------------------------------------------------------------+
+// ASSERT & VERIFY
+//--------------------------------------------------------------------+
+//#define ASSERT(condition, err)    if ( !(condition) ) return err;
+
+//------------- Compile-time Assert -------------//
+#if defined __COUNTER__ && __COUNTER__ != __COUNTER__
+  #define _ASSERT_COUNTER __COUNTER__
+#else
+  #define _ASSERT_COUNTER __LINE__
+#endif
+
+#define ASSERT_STATIC_(const_expr) enum { XSTRING_CONCAT_(static_assert_, _ASSERT_COUNTER) = 1/(!!(const_expr)) }
+
+
+#define VERIFY_(condition)                if ( !(condition) ) return false;
+#define VERIFY_RETURN_(condition, error)  if ( !(condition) ) return error;
+
+//--------------------------------------------------------------------+
+// INLINE FUNCTION
+//--------------------------------------------------------------------+
+static inline bool is_within(uint32_t lower, uint32_t value, uint32_t upper)
+{
+  return (lower <= value) && (value <= upper);
+}
+
+#endif /* _COMMON_HEADER_H_ */