diff options
| author | hathach <[email protected]> | 2018-06-18 14:05:24 +0700 |
|---|---|---|
| committer | hathach <[email protected]> | 2018-06-18 14:05:24 +0700 |
| commit | 424735d44041fc478b572f973d997829b402153d (patch) | |
| tree | bc9956eee5bba55cf2f46fe49b504a6278d5b8b9 /src/common/binary.h | |
| parent | b96e8c6cefd0128c99ab65fe7f2909449c85092b (diff) | |
rename subfolder source to src
Diffstat (limited to 'src/common/binary.h')
| -rw-r--r-- | src/common/binary.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/common/binary.h b/src/common/binary.h new file mode 100644 index 000000000..3ab87e3f8 --- /dev/null +++ b/src/common/binary.h @@ -0,0 +1,132 @@ +/**************************************************************************/
+/*!
+ @file binary.h
+ @author hathach (tinyusb.org)
+
+ @section LICENSE
+
+ Software License Agreement (BSD License)
+
+ Copyright (c) 2013, hathach (tinyusb.org)
+ 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.
+
+ This file is part of the tinyusb stack.
+*/
+/**************************************************************************/
+
+/** \ingroup Group_Common
+ * \defgroup Group_Binary Binary
+ * @{ */
+
+#ifndef _TUSB_BINARY_H_
+#define _TUSB_BINARY_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "tusb_compiler.h"
+
+//------------- Bit manipulation -------------//
+#define BIT_(n) (1U << (n)) ///< n-th Bit
+#define BIT_SET_(x, n) ( (x) | BIT_(n) ) ///< set n-th bit of x to 1
+#define BIT_CLR_(x, n) ( (x) & (~BIT_(n)) ) ///< clear n-th bit of x
+#define BIT_TEST_(x, n) ( ((x) & BIT_(n)) ? true : false ) ///< check if n-th bit of x is 1
+
+static inline uint32_t bit_set(uint32_t value, uint8_t n) ATTR_CONST ATTR_ALWAYS_INLINE;
+static inline uint32_t bit_set(uint32_t value, uint8_t n)
+{
+ return value | BIT_(n);
+}
+
+static inline uint32_t bit_clear(uint32_t value, uint8_t n) ATTR_CONST ATTR_ALWAYS_INLINE;
+static inline uint32_t bit_clear(uint32_t value, uint8_t n)
+{
+ return value & (~BIT_(n));
+}
+
+static inline bool bit_test(uint32_t value, uint8_t n) ATTR_CONST ATTR_ALWAYS_INLINE;
+static inline bool bit_test(uint32_t value, uint8_t n)
+{
+ return (value & BIT_(n)) ? true : false;
+}
+
+///< create a mask with n-bit lsb set to 1
+static inline uint32_t bit_mask(uint8_t n) ATTR_CONST ATTR_ALWAYS_INLINE;
+static inline uint32_t bit_mask(uint8_t n)
+{
+ return (n < 32) ? ( BIT_(n) - 1 ) : UINT32_MAX;
+}
+
+static inline uint32_t bit_mask_range(uint8_t start, uint32_t end) ATTR_CONST ATTR_ALWAYS_INLINE;
+static inline uint32_t bit_mask_range(uint8_t start, uint32_t end)
+{
+ return bit_mask(end+1) & ~ bit_mask(start);
+}
+
+static inline uint32_t bit_set_range(uint32_t value, uint8_t start, uint8_t end, uint32_t pattern) ATTR_CONST ATTR_ALWAYS_INLINE;
+static inline uint32_t bit_set_range(uint32_t value, uint8_t start, uint8_t end, uint32_t pattern)
+{
+ return ( value & ~bit_mask_range(start, end) ) | (pattern << start);
+}
+
+
+//------------- Binary Constant -------------//
+#if defined(__GNUC__) && !defined(__CC_ARM)
+
+#define BIN8(x) ((uint8_t) (0b##x))
+#define BIN16(b1, b2) ((uint16_t) (0b##b1##b2))
+#define BIN32(b1, b2, b3, b4) ((uint32_t) (0b##b1##b2##b3##b4))
+
+#else
+
+// internal macro of B8, B16, B32
+#define _B8__(x) (((x&0x0000000FUL)?1:0) \
+ +((x&0x000000F0UL)?2:0) \
+ +((x&0x00000F00UL)?4:0) \
+ +((x&0x0000F000UL)?8:0) \
+ +((x&0x000F0000UL)?16:0) \
+ +((x&0x00F00000UL)?32:0) \
+ +((x&0x0F000000UL)?64:0) \
+ +((x&0xF0000000UL)?128:0))
+
+#define BIN8(d) ((uint8_t) _B8__(0x##d##UL))
+#define BIN16(dmsb,dlsb) (((uint16_t)BIN8(dmsb)<<8) + BIN8(dlsb))
+#define BIN32(dmsb,db2,db3,dlsb) \
+ (((uint32_t)BIN8(dmsb)<<24) \
+ + ((uint32_t)BIN8(db2)<<16) \
+ + ((uint32_t)BIN8(db3)<<8) \
+ + BIN8(dlsb))
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _TUSB_BINARY_H_ */
+
+/** @} */
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