212 lines
7.9 KiB
C
212 lines
7.9 KiB
C
/**
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* Copyright (c) 2008 - 2017, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/** @file
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* @brief Common defines and macros for firmware developed by Nordic Semiconductor.
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*/
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#ifndef NORDIC_COMMON_H__
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#define NORDIC_COMMON_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Check if selected module is enabled
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*
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* This is save function for driver enable checking.
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* Correct from Lint point of view (not using default of undefined value).
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*
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* Usage:
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* @code
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#if NRF_MODULE_ENABLED(UART)
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...
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#endif
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* @endcode
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*
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* @param module The module name.
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*
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* @retval 1 The macro <module>_ENABLE is defined and is non-zero.
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* @retval 0 The macro <module>_ENABLE is not defined or it equals zero.
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*
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* @note
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* This macro intentionally does not implement second expansion level.
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* The name of the module to be checked has to be given directly as a parameter.
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* And given parameter would be connected with @c _ENABLED postfix directly
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* without evaluating its value.
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*/
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//lint -emacro(491,NRF_MODULE_ENABLED) // Suppers warning 491 "non-standard use of 'defined' preprocessor operator"
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#define NRF_MODULE_ENABLED(module) \
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((defined(module ## _ENABLED) && (module ## _ENABLED)) ? 1 : 0)
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/** The upper 8 bits of a 32 bit value */
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//lint -emacro(572,MSB_32) // Suppress warning 572 "Excessive shift value"
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#define MSB_32(a) (((a) & 0xFF000000) >> 24)
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/** The lower 8 bits (of a 32 bit value) */
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#define LSB_32(a) ((a) & 0x000000FF)
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/** The upper 8 bits of a 16 bit value */
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//lint -emacro(572,MSB_16) // Suppress warning 572 "Excessive shift value"
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#define MSB_16(a) (((a) & 0xFF00) >> 8)
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/** The lower 8 bits (of a 16 bit value) */
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#define LSB_16(a) ((a) & 0x00FF)
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/** Leaves the minimum of the two 32-bit arguments */
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/*lint -emacro(506, MIN) */ /* Suppress "Constant value Boolean */
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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/** Leaves the maximum of the two 32-bit arguments */
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/*lint -emacro(506, MAX) */ /* Suppress "Constant value Boolean */
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#define MAX(a, b) ((a) < (b) ? (b) : (a))
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/**@brief Concatenates two parameters.
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*
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* It realizes two level expansion to make it sure that all the parameters
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* are actually expanded before gluing them together.
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*
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* @param p1 First parameter to concatenating
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* @param p2 Second parameter to concatenating
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*
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* @return Two parameters glued together.
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* They have to create correct C mnemonic in other case
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* preprocessor error would be generated.
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*
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* @sa CONCAT_3
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*/
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#define CONCAT_2(p1, p2) CONCAT_2_(p1, p2)
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/** Auxiliary macro used by @ref CONCAT_2 */
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#define CONCAT_2_(p1, p2) p1##p2
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/**@brief Concatenates three parameters.
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*
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* It realizes two level expansion to make it sure that all the parameters
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* are actually expanded before gluing them together.
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*
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* @param p1 First parameter to concatenating
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* @param p2 Second parameter to concatenating
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* @param p3 Third parameter to concatenating
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*
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* @return Three parameters glued together.
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* They have to create correct C mnemonic in other case
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* preprocessor error would be generated.
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*
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* @sa CONCAT_2
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*/
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#define CONCAT_3(p1, p2, p3) CONCAT_3_(p1, p2, p3)
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/** Auxiliary macro used by @ref CONCAT_3 */
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#define CONCAT_3_(p1, p2, p3) p1##p2##p3
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#define STRINGIFY_(val) #val
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/** Converts a macro argument into a character constant.
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*/
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#define STRINGIFY(val) STRINGIFY_(val)
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/** Counts number of elements inside the array
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*/
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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/**@brief Set a bit in the uint32 word.
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*
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* @param[in] W Word whose bit is being set.
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* @param[in] B Bit number in the word to be set.
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*/
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#define SET_BIT(W, B) ((W) |= (uint32_t)(1U << (B)))
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/**@brief Clears a bit in the uint32 word.
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*
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* @param[in] W Word whose bit is to be cleared.
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* @param[in] B Bit number in the word to be cleared.
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*/
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#define CLR_BIT(W, B) ((W) &= (~(uint32_t)(1U << (B))))
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/**@brief Checks if a bit is set.
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*
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* @param[in] W Word whose bit is to be checked.
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* @param[in] B Bit number in the word to be checked.
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*
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* @retval 1 if bit is set.
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* @retval 0 if bit is not set.
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*/
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#define IS_SET(W, B) (((W) >> (B)) & 1)
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#define BIT_0 0x01 /**< The value of bit 0 */
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#define BIT_1 0x02 /**< The value of bit 1 */
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#define BIT_2 0x04 /**< The value of bit 2 */
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#define BIT_3 0x08 /**< The value of bit 3 */
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#define BIT_4 0x10 /**< The value of bit 4 */
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#define BIT_5 0x20 /**< The value of bit 5 */
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#define BIT_6 0x40 /**< The value of bit 6 */
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#define BIT_7 0x80 /**< The value of bit 7 */
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#define BIT_8 0x0100 /**< The value of bit 8 */
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#define BIT_9 0x0200 /**< The value of bit 9 */
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#define BIT_10 0x0400 /**< The value of bit 10 */
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#define BIT_11 0x0800 /**< The value of bit 11 */
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#define BIT_12 0x1000 /**< The value of bit 12 */
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#define BIT_13 0x2000 /**< The value of bit 13 */
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#define BIT_14 0x4000 /**< The value of bit 14 */
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#define BIT_15 0x8000 /**< The value of bit 15 */
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#define BIT_16 0x00010000 /**< The value of bit 16 */
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#define BIT_17 0x00020000 /**< The value of bit 17 */
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#define BIT_18 0x00040000 /**< The value of bit 18 */
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#define BIT_19 0x00080000 /**< The value of bit 19 */
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#define BIT_20 0x00100000 /**< The value of bit 20 */
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#define BIT_21 0x00200000 /**< The value of bit 21 */
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#define BIT_22 0x00400000 /**< The value of bit 22 */
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#define BIT_23 0x00800000 /**< The value of bit 23 */
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#define BIT_24 0x01000000 /**< The value of bit 24 */
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#define BIT_25 0x02000000 /**< The value of bit 25 */
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#define BIT_26 0x04000000 /**< The value of bit 26 */
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#define BIT_27 0x08000000 /**< The value of bit 27 */
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#define BIT_28 0x10000000 /**< The value of bit 28 */
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#define BIT_29 0x20000000 /**< The value of bit 29 */
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#define BIT_30 0x40000000 /**< The value of bit 30 */
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#define BIT_31 0x80000000 /**< The value of bit 31 */
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#define UNUSED_VARIABLE(X) ((void)(X))
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#define UNUSED_PARAMETER(X) UNUSED_VARIABLE(X)
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#define UNUSED_RETURN_VALUE(X) UNUSED_VARIABLE(X)
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#ifdef __cplusplus
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}
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#endif
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#endif // NORDIC_COMMON_H__
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