121 lines
4.7 KiB
C
121 lines
4.7 KiB
C
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/**************************************************************************************************
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Filename: hal_defs.h
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Revised: $Date: 2008-10-07 14:47:15 -0700 (Tue, 07 Oct 2008) $
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Revision: $Revision: 18212 $
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Description: This file contains useful macros and data types
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Copyright 2005-2007 Texas Instruments Incorporated. All rights reserved.
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IMPORTANT: Your use of this Software is limited to those specific rights
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granted under the terms of a software license agreement between the user
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who downloaded the software, his/her employer (which must be your employer)
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and Texas Instruments Incorporated (the "License"). You may not use this
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Software unless you agree to abide by the terms of the License. The License
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limits your use, and you acknowledge, that the Software may not be modified,
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copied or distributed unless embedded on a Texas Instruments microcontroller
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or used solely and exclusively in conjunction with a Texas Instruments radio
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frequency transceiver, which is integrated into your product. Other than for
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the foregoing purpose, you may not use, reproduce, copy, prepare derivative
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works of, modify, distribute, perform, display or sell this Software and/or
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its documentation for any purpose.
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YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
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PROVIDED <EFBFBD>AS IS<EFBFBD> WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
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INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
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NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
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TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
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NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
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LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
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INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
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OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
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OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
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(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
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Should you have any questions regarding your right to use this Software,
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contact Texas Instruments Incorporated at www.TI.com.
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**************************************************************************************************/
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#ifndef HAL_DEFS_H
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#define HAL_DEFS_H
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/* ------------------------------------------------------------------------------------------------
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* Macros
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* ------------------------------------------------------------------------------------------------
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*/
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#ifndef BV
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#define BV(n) (1 << (n))
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#endif
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#ifndef BF
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#define BF(x,b,s) (((x) & (b)) >> (s))
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#endif
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#ifndef MIN
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#define MIN(n,m) (((n) < (m)) ? (n) : (m))
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#endif
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#ifndef MAX
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#define MAX(n,m) (((n) < (m)) ? (m) : (n))
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#endif
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#ifndef ABS
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#define ABS(n) (((n) < 0) ? -(n) : (n))
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#endif
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/* takes a byte out of a uint32 : var - uint32, ByteNum - byte to take out (0 - 3) */
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#define BREAK_UINT32( var, ByteNum ) \
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(uint8)((uint32)(((var) >>((ByteNum) * 8)) & 0x00FF))
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#define BUILD_UINT32(Byte0, Byte1, Byte2, Byte3) \
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((uint32)((uint32)((Byte0) & 0x00FF) \
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+ ((uint32)((Byte1) & 0x00FF) << 8) \
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+ ((uint32)((Byte2) & 0x00FF) << 16) \
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+ ((uint32)((Byte3) & 0x00FF) << 24)))
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#define BUILD_UINT16(loByte, hiByte) \
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((uint16)(((loByte) & 0x00FF) + (((hiByte) & 0x00FF) << 8)))
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#define HI_UINT16(a) (((a) >> 8) & 0xFF)
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#define LO_UINT16(a) ((a) & 0xFF)
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#define BUILD_UINT8(hiByte, loByte) \
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((uint8)(((loByte) & 0x0F) + (((hiByte) & 0x0F) << 4)))
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#define HI_UINT8(a) (((a) >> 4) & 0x0F)
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#define LO_UINT8(a) ((a) & 0x0F)
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/*
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* This macro is for use by other macros to form a fully valid C statement.
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* Without this, the if/else conditionals could show unexpected behavior.
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*
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* For example, use...
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* #define SET_REGS() st( ioreg1 = 0; ioreg2 = 0; )
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* instead of ...
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* #define SET_REGS() { ioreg1 = 0; ioreg2 = 0; }
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* or
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* #define SET_REGS() ioreg1 = 0; ioreg2 = 0;
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* The last macro would not behave as expected in the if/else construct.
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* The second to last macro will cause a compiler error in certain uses
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* of if/else construct
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*
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* It is not necessary, or recommended, to use this macro where there is
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* already a valid C statement. For example, the following is redundant...
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* #define CALL_FUNC() st( func(); )
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* This should simply be...
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* #define CALL_FUNC() func()
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*
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* (The while condition below evaluates false without generating a
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* constant-controlling-loop type of warning on most compilers.)
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*/
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#define st(x) do { x } while (__LINE__ == -1)
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/**************************************************************************************************
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*/
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#endif
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