167 lines
5.3 KiB
C
167 lines
5.3 KiB
C
/**
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* Copyright (c) 2017 - 2019, 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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#include <nrfx.h>
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#if NRFX_CHECK(NRFX_PRS_ENABLED)
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#include "nrfx_prs.h"
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#define NRFX_LOG_MODULE PRS
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#include <nrfx_log.h>
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#define LOG_FUNCTION_EXIT(level, ret_code) \
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NRFX_LOG_##level("Function: %s, error code: %s.", \
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__func__, \
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NRFX_LOG_ERROR_STRING_GET(ret_code))
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typedef struct {
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nrfx_irq_handler_t handler;
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bool acquired;
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} prs_box_t;
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#define PRS_BOX_DEFINE(n) \
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static prs_box_t m_prs_box_##n = { .handler = NULL, .acquired = false }; \
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void nrfx_prs_box_##n##_irq_handler(void) \
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{ \
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NRFX_ASSERT(m_prs_box_##n.handler); \
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m_prs_box_##n.handler(); \
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}
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#if defined(NRFX_PRS_BOX_0_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_0_ENABLED)
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PRS_BOX_DEFINE(0)
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#endif
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#if defined(NRFX_PRS_BOX_1_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_1_ENABLED)
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PRS_BOX_DEFINE(1)
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#endif
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#if defined(NRFX_PRS_BOX_2_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_2_ENABLED)
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PRS_BOX_DEFINE(2)
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#endif
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#if defined(NRFX_PRS_BOX_3_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_3_ENABLED)
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PRS_BOX_DEFINE(3)
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#endif
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#if defined(NRFX_PRS_BOX_4_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_4_ENABLED)
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PRS_BOX_DEFINE(4)
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#endif
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static prs_box_t * prs_box_get(void const * p_base_addr)
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{
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#if !defined(IS_PRS_BOX)
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#define IS_PRS_BOX(n, p_base_addr) ((p_base_addr) == NRFX_PRS_BOX_##n##_ADDR)
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#endif
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#if defined(NRFX_PRS_BOX_0_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_0_ENABLED)
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if (IS_PRS_BOX(0, p_base_addr)) { return &m_prs_box_0; }
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else
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#endif
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#if defined(NRFX_PRS_BOX_1_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_1_ENABLED)
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if (IS_PRS_BOX(1, p_base_addr)) { return &m_prs_box_1; }
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else
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#endif
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#if defined(NRFX_PRS_BOX_2_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_2_ENABLED)
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if (IS_PRS_BOX(2, p_base_addr)) { return &m_prs_box_2; }
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else
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#endif
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#if defined(NRFX_PRS_BOX_3_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_3_ENABLED)
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if (IS_PRS_BOX(3, p_base_addr)) { return &m_prs_box_3; }
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else
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#endif
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#if defined(NRFX_PRS_BOX_4_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_4_ENABLED)
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if (IS_PRS_BOX(4, p_base_addr)) { return &m_prs_box_4; }
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else
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#endif
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{
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return NULL;
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}
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}
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nrfx_err_t nrfx_prs_acquire(void const * p_base_addr,
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nrfx_irq_handler_t irq_handler)
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{
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NRFX_ASSERT(p_base_addr);
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nrfx_err_t ret_code;
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prs_box_t * p_box = prs_box_get(p_base_addr);
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if (p_box != NULL)
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{
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bool busy = false;
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NRFX_CRITICAL_SECTION_ENTER();
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if (p_box->acquired)
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{
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busy = true;
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}
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else
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{
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p_box->handler = irq_handler;
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p_box->acquired = true;
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}
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NRFX_CRITICAL_SECTION_EXIT();
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if (busy)
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{
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ret_code = NRFX_ERROR_BUSY;
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LOG_FUNCTION_EXIT(WARNING, ret_code);
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return ret_code;
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}
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}
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ret_code = NRFX_SUCCESS;
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LOG_FUNCTION_EXIT(INFO, ret_code);
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return ret_code;
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}
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void nrfx_prs_release(void const * p_base_addr)
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{
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NRFX_ASSERT(p_base_addr);
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prs_box_t * p_box = prs_box_get(p_base_addr);
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if (p_box != NULL)
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{
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p_box->handler = NULL;
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p_box->acquired = false;
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}
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}
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#endif // NRFX_CHECK(NRFX_PRS_ENABLED)
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