From 424735d44041fc478b572f973d997829b402153d Mon Sep 17 00:00:00 2001 From: hathach Date: Mon, 18 Jun 2018 14:05:24 +0700 Subject: rename subfolder source to src --- src/common/binary.h | 132 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 src/common/binary.h (limited to 'src/common/binary.h') 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 +#include +#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_ */ + +/** @} */ -- cgit v1.3.1