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* 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)
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