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386 lines
11 KiB
386 lines
11 KiB
/*
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* Copyright (c) 2018 - 2019, Nordic Semiconductor ASA
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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
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* modification, 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 must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder 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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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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#include "nrfx_atomic.h"
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#ifndef NRFX_ATOMIC_USE_BUILT_IN
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#define NRFX_ATOMIC_USE_BUILT_IN 0
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#endif // NRFX_ATOMIC_USE_BUILT_IN
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#if ((__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U))
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#define NRFX_ATOMIC_STREX_LDREX_PRESENT
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#endif
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#if (NRFX_ATOMIC_USE_BUILT_IN == 0) && defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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#include "nrfx_atomic_internal.h"
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#endif
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uint32_t nrfx_atomic_u32_fetch_store(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_exchange_n(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(mov, old_val, new_val, p_data, value);
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(void) new_val;
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return old_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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uint32_t old_val = *p_data;
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*p_data = value;
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NRFX_CRITICAL_SECTION_EXIT();
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return old_val;
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#endif // NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_store(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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__atomic_store_n(p_data, value, __ATOMIC_SEQ_CST);
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return value;
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(mov, old_val, new_val, p_data, value);
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(void) old_val;
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return new_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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*p_data = value;
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NRFX_CRITICAL_SECTION_EXIT();
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return value;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_fetch_or(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_fetch_or(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(orr, old_val, new_val, p_data, value);
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(void) new_val;
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return old_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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uint32_t old_val = *p_data;
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*p_data |= value;
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NRFX_CRITICAL_SECTION_EXIT();
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return old_val;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_or(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_or_fetch(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(orr, old_val, new_val, p_data, value);
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(void) old_val;
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return new_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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*p_data |= value;
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uint32_t new_value = *p_data;
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NRFX_CRITICAL_SECTION_EXIT();
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return new_value;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_fetch_and(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_fetch_and(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(and, old_val, new_val, p_data, value);
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(void) new_val;
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return old_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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uint32_t old_val = *p_data;
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*p_data &= value;
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NRFX_CRITICAL_SECTION_EXIT();
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return old_val;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_and(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_and_fetch(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(and, old_val, new_val, p_data, value);
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(void) old_val;
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return new_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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*p_data &= value;
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uint32_t new_value = *p_data;
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NRFX_CRITICAL_SECTION_EXIT();
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return new_value;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_fetch_xor(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_fetch_xor(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(eor, old_val, new_val, p_data, value);
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(void) new_val;
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return old_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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uint32_t old_val = *p_data;
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*p_data ^= value;
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NRFX_CRITICAL_SECTION_EXIT();
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return old_val;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_xor(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_xor_fetch(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(eor, old_val, new_val, p_data, value);
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(void) old_val;
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return new_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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*p_data ^= value;
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uint32_t new_value = *p_data;
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NRFX_CRITICAL_SECTION_EXIT();
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return new_value;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_fetch_add(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_fetch_add(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(add, old_val, new_val, p_data, value);
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(void) new_val;
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return old_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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uint32_t old_val = *p_data;
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*p_data += value;
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NRFX_CRITICAL_SECTION_EXIT();
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return old_val;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_add(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_add_fetch(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(add, old_val, new_val, p_data, value);
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(void) old_val;
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return new_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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*p_data += value;
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uint32_t new_value = *p_data;
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NRFX_CRITICAL_SECTION_EXIT();
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return new_value;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_fetch_sub(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_fetch_sub(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(sub, old_val, new_val, p_data, value);
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(void) new_val;
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return old_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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uint32_t old_val = *p_data;
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*p_data -= value;
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NRFX_CRITICAL_SECTION_EXIT();
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return old_val;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_sub(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_sub_fetch(p_data, value, __ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(sub, old_val, new_val, p_data, value);
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(void) old_val;
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return new_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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*p_data -= value;
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uint32_t new_value = *p_data;
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NRFX_CRITICAL_SECTION_EXIT();
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return new_value;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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bool nrfx_atomic_u32_cmp_exch(nrfx_atomic_u32_t * p_data,
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uint32_t * p_expected,
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uint32_t desired)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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return __atomic_compare_exchange(p_data,
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p_expected,
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&desired,
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1,
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__ATOMIC_SEQ_CST,
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__ATOMIC_SEQ_CST);
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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return nrfx_atomic_internal_cmp_exch(p_data, p_expected, desired);
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#else
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bool result;
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NRFX_CRITICAL_SECTION_ENTER();
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if (*p_data == *p_expected)
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{
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*p_data = desired;
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result = true;
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}
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else
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{
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*p_expected = *p_data;
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result = false;
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}
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NRFX_CRITICAL_SECTION_EXIT();
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return result;
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#endif
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}
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uint32_t nrfx_atomic_u32_fetch_sub_hs(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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uint32_t expected = *p_data;
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uint32_t new_val;
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do {
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if (expected >= value)
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{
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new_val = expected - value;
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}
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else
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{
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new_val = expected;
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}
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} while (!__atomic_compare_exchange(p_data, &expected, &new_val,
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1, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST));
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return expected;
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(sub_hs, old_val, new_val, p_data, value);
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(void) new_val;
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return old_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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uint32_t old_val = *p_data;
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*p_data -= value;
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NRFX_CRITICAL_SECTION_EXIT();
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return old_val;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_u32_sub_hs(nrfx_atomic_u32_t * p_data, uint32_t value)
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{
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#if NRFX_ATOMIC_USE_BUILT_IN
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uint32_t expected = *p_data;
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uint32_t new_val;
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do {
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if (expected >= value)
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{
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new_val = expected - value;
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}
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else
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{
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new_val = expected;
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}
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} while (!__atomic_compare_exchange(p_data, &expected, &new_val,
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1, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST));
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return new_val;
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#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
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uint32_t old_val;
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uint32_t new_val;
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NRFX_ATOMIC_OP(sub_hs, old_val, new_val, p_data, value);
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(void) old_val;
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return new_val;
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#else
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NRFX_CRITICAL_SECTION_ENTER();
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*p_data -= value;
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uint32_t new_value = *p_data;
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NRFX_CRITICAL_SECTION_EXIT();
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return new_value;
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#endif //NRFX_ATOMIC_USE_BUILT_IN
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}
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uint32_t nrfx_atomic_flag_set_fetch(nrfx_atomic_flag_t * p_data)
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{
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return nrfx_atomic_u32_fetch_or(p_data, 1);
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}
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uint32_t nrfx_atomic_flag_set(nrfx_atomic_flag_t * p_data)
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{
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return nrfx_atomic_u32_or(p_data, 1);
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}
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uint32_t nrfx_atomic_flag_clear_fetch(nrfx_atomic_flag_t * p_data)
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{
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return nrfx_atomic_u32_fetch_and(p_data, 0);
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}
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uint32_t nrfx_atomic_flag_clear(nrfx_atomic_flag_t * p_data)
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{
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return nrfx_atomic_u32_and(p_data, 0);
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}
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