binary.h

00001 /**************************************************************************/
00002 /*!
00003     @file     binary.h
00004     @author   hathach (tinyusb.org)
00005 
00006     @section LICENSE
00007 
00008     Software License Agreement (BSD License)
00009 
00010     Copyright (c) 2013, K. Townsend (microBuilder.eu)
00011     All rights reserved.
00012 
00013     Redistribution and use in source and binary forms, with or without
00014     modification, are permitted provided that the following conditions are met:
00015     1. Redistributions of source code must retain the above copyright
00016     notice, this list of conditions and the following disclaimer.
00017     2. Redistributions in binary form must reproduce the above copyright
00018     notice, this list of conditions and the following disclaimer in the
00019     documentation and/or other materials provided with the distribution.
00020     3. Neither the name of the copyright holders nor the
00021     names of its contributors may be used to endorse or promote products
00022     derived from this software without specific prior written permission.
00023 
00024     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
00025     EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00026     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00027     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
00028     DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00029     INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00030     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
00031     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00032     INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
00033     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00034 */
00035 /**************************************************************************/
00036 
00037 /** \ingroup TBD
00038  *  \defgroup TBD
00039  *  \brief TBD
00040  *
00041  *  @{
00042  */
00043 
00044 #ifndef _BINARY_H_
00045 #define _BINARY_H_
00046 
00047 #ifdef __cplusplus
00048  extern "C" {
00049 #endif
00050 
00051 /// n-th Bit
00052 #define BIT(n) (1 << (n))
00053 
00054 /// set n-th bit of x to 1
00055 #define BIT_SET(x, n) ( (x) | BIT(n) )
00056 
00057 /// clear n-th bit of x
00058 #define BIT_CLR(x, n) ( (x) & (~BIT(n)) )
00059 
00060 /// test n-th bit of x
00061 #define BIT_TEST(x, n) ( (x) & BIT(n) )
00062 
00063 #if defined(__GNUC__) && !defined(__CC_ARM) // keil does not support binary format
00064 
00065 #define BIN8(x)               ((uint8_t)  (0b##x))
00066 #define BIN16(b1, b2)         ((uint16_t) (0b##b1##b2))
00067 #define BIN32(b1, b2, b3, b4) ((uint32_t) (0b##b1##b2##b3##b4))
00068 
00069 #else
00070 
00071 //  internal macro of B8, B16, B32
00072 #define _B8__(x) (((x&0x0000000FUL)?1:0) \
00073                 +((x&0x000000F0UL)?2:0) \
00074                 +((x&0x00000F00UL)?4:0) \
00075                 +((x&0x0000F000UL)?8:0) \
00076                 +((x&0x000F0000UL)?16:0) \
00077                 +((x&0x00F00000UL)?32:0) \
00078                 +((x&0x0F000000UL)?64:0) \
00079                 +((x&0xF0000000UL)?128:0))
00080 
00081 #define BIN8(d) ((uint8_t) _B8__(0x##d##UL))
00082 #define BIN16(dmsb,dlsb) (((uint16_t)BIN8(dmsb)<<8) + BIN8(dlsb))
00083 #define BIN32(dmsb,db2,db3,dlsb) \
00084             (((uint32_t)BIN8(dmsb)<<24) \
00085             + ((uint32_t)BIN8(db2)<<16) \
00086             + ((uint32_t)BIN8(db3)<<8) \
00087             + BIN8(dlsb))
00088 #endif
00089 
00090 #ifdef __cplusplus
00091 }
00092 #endif
00093 
00094 #endif /* _BINARY_H_ */
00095 
00096 /** @} */