mirror of
https://gitee.com/mirrors_PX4/PX4-Autopilot.git
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David Sidrane
59 lines
2.8 KiB
C
59 lines
2.8 KiB
C
/****************************************************************************
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*
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* Copyright (c) 2012-2015 PX4 Development Team. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/*
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* @file board.h
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*
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* bootloader board interface
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* This file contains the common interfaces that all boards
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* have to supply
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*/
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#pragma once
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/************************************************************************************
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* Included Files
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************************************************************************************/
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define BIT(pos) (1ull<<(pos))
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#define BIT_MASK(length) (BIT(length)-1)
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#define BITFEILD_MASK(lsb_pos, length) ( BIT_MASK(length) << (lsb_pos))
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#define BITFEILD_ISOLATE(x, lsb_pos, length) ((x) & (BITFEILD_MASK((lsb_pos), (length))))
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#define BITFEILD_EXCLUDE(x, lsb_pos, length) ((x) & ~(BITFEILD_MASK((lsb_pos), (length))))
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#define BITFEILD_GET(y, lsb_pos, length) (((y)>>(lsb_pos)) & BIT_MASK(length))
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#define BITFEILD_SET(y, x, lsb_pos, length) ( y= ((y) & ~BF_MASK(lsb_pos, length)) | BITFEILD_ISOLATE(x, lsb_pos, length))
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