You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
275 lines
9.2 KiB
275 lines
9.2 KiB
/*
|
|
* Copyright (c) 2016 - 2019, Nordic Semiconductor ASA
|
|
* 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 holder 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 AND CONTRIBUTORS "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 OR CONTRIBUTORS 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.
|
|
*/
|
|
|
|
#ifndef NRFX_ATOMIC_H__
|
|
#define NRFX_ATOMIC_H__
|
|
|
|
#include <nrfx.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @defgroup nrfx_atomic Atomic operations API
|
|
* @ingroup nrfx
|
|
* @{
|
|
*
|
|
* @brief This module implements C11 stdatomic.h simplified API.
|
|
*
|
|
* At this point, only Cortex-M3 and M4 cores are supported (LDREX/STREX instructions).
|
|
* Atomic types are limited to @ref nrfx_atomic_u32_t and @ref nrfx_atomic_flag_t.
|
|
*/
|
|
|
|
|
|
/** @brief Atomic 32-bit unsigned type. */
|
|
typedef volatile uint32_t nrfx_atomic_u32_t;
|
|
|
|
/** @brief Atomic 1-bit flag type (technically 32-bit). */
|
|
typedef volatile uint32_t nrfx_atomic_flag_t;
|
|
|
|
/**
|
|
* @brief Function for storing a value to an atomic object and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value to store.
|
|
*
|
|
* @return Previous value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_fetch_store(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for storing a value to an atomic object and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value to store.
|
|
*
|
|
* @return New value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_store(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running a logical OR operation on an atomic object
|
|
* and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the OR operation.
|
|
*
|
|
* @return Previous value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_fetch_or(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running a logical OR operation on an atomic object
|
|
* and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the OR operation.
|
|
*
|
|
* @return New value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_or(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running a logical AND operation on an atomic object
|
|
* and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the AND operation.
|
|
*
|
|
* @return Previous value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_fetch_and(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running a logical AND operation on an atomic object
|
|
* and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the AND operation.
|
|
*
|
|
* @return New value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_and(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running a logical XOR operation on an atomic object
|
|
* and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the XOR operation.
|
|
*
|
|
* @return Previous value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_fetch_xor(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running a logical XOR operation on an atomic object
|
|
* and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the XOR operation.
|
|
*
|
|
* @return New value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_xor(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running an arithmetic ADD operation on an atomic object
|
|
* and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the ADD operation.
|
|
*
|
|
* @return Previous value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_fetch_add(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running an arithmetic ADD operation on an atomic object
|
|
* and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the ADD operation.
|
|
*
|
|
* @return New value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_add(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running an arithmetic SUB operation on an atomic object
|
|
* and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the SUB operation.
|
|
*
|
|
* @return Old value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_fetch_sub(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running an arithmetic SUB operation on an atomic object
|
|
* and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the SUB operation.
|
|
*
|
|
* @return New value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_sub(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for atomic conditional value replacement.
|
|
*
|
|
* Atomically compares the value pointed to by @p p_data with the value pointed to by @p p_expected.
|
|
* If those are equal, replaces the former with desired. Otherwise, loads the actual value
|
|
* pointed to by @p p_data into @p *p_expected.
|
|
*
|
|
* @param p_data Atomic memory pointer to test and modify.
|
|
* @param p_expected Pointer to the test value.
|
|
* @param desired Value to be stored to atomic memory.
|
|
*
|
|
* @retval true @p *p_data was equal to @p *p_expected.
|
|
* @retval false @p *p_data was not equal to @p *p_expected.
|
|
*/
|
|
bool nrfx_atomic_u32_cmp_exch(nrfx_atomic_u32_t * p_data,
|
|
uint32_t * p_expected,
|
|
uint32_t desired);
|
|
|
|
/**
|
|
* @brief Function for running an arithmetic SUB operation on an atomic object
|
|
* if object >= value, and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the SUB operation.
|
|
*
|
|
* @return Previous value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_fetch_sub_hs(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running an arithmetic SUB operation on an atomic object
|
|
* if object >= value, and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic memory pointer.
|
|
* @param[in] value Value of the second operand in the SUB operation.
|
|
*
|
|
* @return New value stored in the atomic object.
|
|
*/
|
|
uint32_t nrfx_atomic_u32_sub_hs(nrfx_atomic_u32_t * p_data, uint32_t value);
|
|
|
|
/**
|
|
* @brief Function for running a logical one bit flag set operation
|
|
* on an atomic object and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic flag memory pointer.
|
|
*
|
|
* @return Previous flag value.
|
|
*/
|
|
uint32_t nrfx_atomic_flag_set_fetch(nrfx_atomic_flag_t * p_data);
|
|
|
|
/**
|
|
* @brief Function for running a logical one bit flag set operation
|
|
* on an atomic object and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic flag memory pointer.
|
|
*
|
|
* @return New flag value.
|
|
*/
|
|
uint32_t nrfx_atomic_flag_set(nrfx_atomic_flag_t * p_data);
|
|
|
|
/**
|
|
* @brief Function for running a logical one bit flag clear operation
|
|
* on an atomic object and returning its previous value.
|
|
*
|
|
* @param[in] p_data Atomic flag memory pointer.
|
|
*
|
|
* @return Previous flag value.
|
|
*/
|
|
uint32_t nrfx_atomic_flag_clear_fetch(nrfx_atomic_flag_t * p_data);
|
|
|
|
/**
|
|
* @brief Function for running a logical one bit flag clear operation
|
|
* on an atomic object and returning its new value.
|
|
*
|
|
* @param[in] p_data Atomic flag memory pointer.
|
|
*
|
|
* @return New flag value.
|
|
*/
|
|
uint32_t nrfx_atomic_flag_clear(nrfx_atomic_flag_t * p_data);
|
|
|
|
/** @} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // NRFX_ATOMIC_H__
|
|
|