| /** |
| * Copyright (c) 2017 - 2018, 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. |
| */ |
| |
| #include <nrfx.h> |
| |
| #if NRFX_CHECK(NRFX_PRS_ENABLED) |
| #include "nrfx_prs.h" |
| |
| #define NRFX_LOG_MODULE PRS |
| #include <nrfx_log.h> |
| |
| #define LOG_FUNCTION_EXIT(level, ret_code) \ |
| NRFX_LOG_##level("Function: %s, error code: %s.", \ |
| __func__, \ |
| NRFX_LOG_ERROR_STRING_GET(ret_code)) |
| |
| |
| typedef struct { |
| nrfx_irq_handler_t handler; |
| bool acquired; |
| } prs_box_t; |
| |
| #define PRS_BOX_DEFINE(n) \ |
| static prs_box_t m_prs_box_##n = { .handler = NULL, .acquired = false }; \ |
| void nrfx_prs_box_##n##_irq_handler(void) \ |
| { \ |
| NRFX_ASSERT(m_prs_box_##n.handler); \ |
| m_prs_box_##n.handler(); \ |
| } |
| |
| #if defined(NRFX_PRS_BOX_0_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_0_ENABLED) |
| PRS_BOX_DEFINE(0) |
| #endif |
| #if defined(NRFX_PRS_BOX_1_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_1_ENABLED) |
| PRS_BOX_DEFINE(1) |
| #endif |
| #if defined(NRFX_PRS_BOX_2_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_2_ENABLED) |
| PRS_BOX_DEFINE(2) |
| #endif |
| #if defined(NRFX_PRS_BOX_3_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_3_ENABLED) |
| PRS_BOX_DEFINE(3) |
| #endif |
| #if defined(NRFX_PRS_BOX_4_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_4_ENABLED) |
| PRS_BOX_DEFINE(4) |
| #endif |
| |
| |
| static prs_box_t * prs_box_get(void const * p_base_addr) |
| { |
| #if !defined(IS_PRS_BOX) |
| #define IS_PRS_BOX(n, p_base_addr) ((p_base_addr) == NRFX_PRS_BOX_##n##_ADDR) |
| #endif |
| |
| #if defined(NRFX_PRS_BOX_0_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_0_ENABLED) |
| if (IS_PRS_BOX(0, p_base_addr)) { return &m_prs_box_0; } |
| else |
| #endif |
| #if defined(NRFX_PRS_BOX_1_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_1_ENABLED) |
| if (IS_PRS_BOX(1, p_base_addr)) { return &m_prs_box_1; } |
| else |
| #endif |
| #if defined(NRFX_PRS_BOX_2_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_2_ENABLED) |
| if (IS_PRS_BOX(2, p_base_addr)) { return &m_prs_box_2; } |
| else |
| #endif |
| #if defined(NRFX_PRS_BOX_3_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_3_ENABLED) |
| if (IS_PRS_BOX(3, p_base_addr)) { return &m_prs_box_3; } |
| else |
| #endif |
| #if defined(NRFX_PRS_BOX_4_ADDR) && NRFX_CHECK(NRFX_PRS_BOX_4_ENABLED) |
| if (IS_PRS_BOX(4, p_base_addr)) { return &m_prs_box_4; } |
| else |
| #endif |
| { |
| return NULL; |
| } |
| } |
| |
| nrfx_err_t nrfx_prs_acquire(void const * p_base_addr, |
| nrfx_irq_handler_t irq_handler) |
| { |
| NRFX_ASSERT(p_base_addr); |
| |
| nrfx_err_t ret_code; |
| |
| prs_box_t * p_box = prs_box_get(p_base_addr); |
| if (p_box != NULL) |
| { |
| bool busy = false; |
| |
| NRFX_CRITICAL_SECTION_ENTER(); |
| if (p_box->acquired) |
| { |
| busy = true; |
| } |
| else |
| { |
| p_box->handler = irq_handler; |
| p_box->acquired = true; |
| } |
| NRFX_CRITICAL_SECTION_EXIT(); |
| |
| if (busy) |
| { |
| ret_code = NRFX_ERROR_BUSY; |
| LOG_FUNCTION_EXIT(WARNING, ret_code); |
| return ret_code; |
| } |
| } |
| |
| ret_code = NRFX_SUCCESS; |
| LOG_FUNCTION_EXIT(INFO, ret_code); |
| return ret_code; |
| } |
| |
| void nrfx_prs_release(void const * p_base_addr) |
| { |
| NRFX_ASSERT(p_base_addr); |
| |
| prs_box_t * p_box = prs_box_get(p_base_addr); |
| if (p_box != NULL) |
| { |
| p_box->handler = NULL; |
| p_box->acquired = false; |
| } |
| } |
| |
| |
| #endif // NRFX_CHECK(NRFX_PRS_ENABLED) |
