nrfx_glue.h

/*
 * Copyright (c) 2017 - 2020, 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_GLUE_H__
#define NRFX_GLUE_H__

#include <sys/__assert.h>
#include <sys/atomic.h>
#include <irq.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @defgroup nrfx_glue nrfx_glue.h
 * @{
 * @ingroup nrfx
 *
 * @brief This file contains macros that should be implemented according to
 *        the needs of the host environment into which @em nrfx is integrated.
 */

//------------------------------------------------------------------------------

/**
 * @brief Macro for placing a runtime assertion.
 *
 * @param expression Expression to be evaluated.
 */
#define NRFX_ASSERT(expression)  __ASSERT_NO_MSG(expression)

/**
 * @brief Macro for placing a compile time assertion.
 *
 * @param expression Expression to be evaluated.
 */
#define NRFX_STATIC_ASSERT(expression) \
        BUILD_ASSERT(expression, "assertion failed")

//------------------------------------------------------------------------------

/**
 * @brief Macro for setting the priority of a specific IRQ.
 *
 * @param irq_number IRQ number.
 * @param priority   Priority to be set.
 */
#define NRFX_IRQ_PRIORITY_SET(irq_number, priority)  // Intentionally empty.
                                                     // Priorities of IRQs are
                                                     // set through IRQ_CONNECT.

/**
 * @brief Macro for enabling a specific IRQ.
 *
 * @param irq_number IRQ number.
 */
#define NRFX_IRQ_ENABLE(irq_number)  irq_enable(irq_number)

/**
 * @brief Macro for checking if a specific IRQ is enabled.
 *
 * @param irq_number IRQ number.
 *
 * @retval true  If the IRQ is enabled.
 * @retval false Otherwise.
 */
#define NRFX_IRQ_IS_ENABLED(irq_number)  irq_is_enabled(irq_number)

/**
 * @brief Macro for disabling a specific IRQ.
 *
 * @param irq_number IRQ number.
 */
#define NRFX_IRQ_DISABLE(irq_number)  irq_disable(irq_number)

/**
 * @brief Macro for setting a specific IRQ as pending.
 *
 * @param irq_number IRQ number.
 */
#define NRFX_IRQ_PENDING_SET(irq_number)  NVIC_SetPendingIRQ(irq_number)

/**
 * @brief Macro for clearing the pending status of a specific IRQ.
 *
 * @param irq_number IRQ number.
 */
#define NRFX_IRQ_PENDING_CLEAR(irq_number)  NVIC_ClearPendingIRQ(irq_number)

/**
 * @brief Macro for checking the pending status of a specific IRQ.
 *
 * @retval true  If the IRQ is pending.
 * @retval false Otherwise.
 */
#define NRFX_IRQ_IS_PENDING(irq_number)  (NVIC_GetPendingIRQ(irq_number) == 1)

/** @brief Macro for entering into a critical section. */
#define NRFX_CRITICAL_SECTION_ENTER()  { unsigned int irq_lock_key = irq_lock();

/** @brief Macro for exiting from a critical section. */
#define NRFX_CRITICAL_SECTION_EXIT()     irq_unlock(irq_lock_key); }

//------------------------------------------------------------------------------

/**
 * @brief When set to a non-zero value, this macro specifies that
 *        @ref nrfx_coredep_delay_us uses a precise DWT-based solution.
 *        A compilation error is generated if the DWT unit is not present
 *        in the SoC used.
 */
#define NRFX_DELAY_DWT_BASED    0

/**
 * @brief Macro for delaying the code execution for at least the specified time.
 *
 * @param us_time Number of microseconds to wait.
 */
#define NRFX_DELAY_US(us_time)  nrfx_busy_wait(us_time)
/* This is a k_busy_wait wrapper, added to avoid the inclusion of kernel.h */
void nrfx_busy_wait(u32_t usec_to_wait);

//------------------------------------------------------------------------------

/** @brief Atomic 32-bit unsigned type. */
#define nrfx_atomic_t  atomic_t

/**
 * @brief Macro 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 of the atomic object.
 */
#define NRFX_ATOMIC_FETCH_STORE(p_data, value)  atomic_set(p_data, value)

/**
 * @brief Macro for running a bitwise 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 of the atomic object.
 */
#define NRFX_ATOMIC_FETCH_OR(p_data, value)  atomic_or(p_data, value)

/**
 * @brief Macro for running a bitwise 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 of the atomic object.
 */
#define NRFX_ATOMIC_FETCH_AND(p_data, value)  atomic_and(p_data, value)

/**
 * @brief Macro for running a bitwise 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 of the atomic object.
 */
#define NRFX_ATOMIC_FETCH_XOR(p_data, value)  atomic_xor(p_data, value)

/**
 * @brief Macro for running an addition 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 of the atomic object.
 */
#define NRFX_ATOMIC_FETCH_ADD(p_data, value)  atomic_add(p_data, value)

/**
 * @brief Macro for running a subtraction 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 Previous value of the atomic object.
 */
#define NRFX_ATOMIC_FETCH_SUB(p_data, value)  atomic_sub(p_data, value)

//------------------------------------------------------------------------------

/**
 * @brief When set to a non-zero value, this macro specifies that the
 *        @ref nrfx_error_codes and the @ref nrfx_err_t type itself are defined
 *        in a customized way and the default definitions from @c <nrfx_error.h>
 *        should not be used.
 */
#define NRFX_CUSTOM_ERROR_CODES 0

//------------------------------------------------------------------------------

/** @brief Bitmask that defines DPPI channels that are reserved for use outside of the nrfx library. */
#define NRFX_DPPI_CHANNELS_USED 0

/** @brief Bitmask that defines DPPI groups that are reserved for use outside of the nrfx library. */
#define NRFX_DPPI_GROUPS_USED   0

/** @brief Bitmask that defines PPI channels that are reserved for use outside of the nrfx library. */
#define NRFX_PPI_CHANNELS_USED  (NRFX_PPI_CHANNELS_USED_BY_BT_CTLR | \
                                 NRFX_PPI_CHANNELS_USED_BY_PWM_SW)

#if defined(CONFIG_BT_CTLR) && defined(CONFIG_BT_LL_SW_SPLIT)
extern const u32_t z_bt_ctlr_used_nrf_ppi_channels;
#define NRFX_PPI_CHANNELS_USED_BY_BT_CTLR   z_bt_ctlr_used_nrf_ppi_channels
#else
#define NRFX_PPI_CHANNELS_USED_BY_BT_CTLR   0
#endif

#if defined(CONFIG_PWM_NRF5_SW)
#define PWM_NRF5_SW_NODE DT_INST(0, nordic_nrf_sw_pwm)
#define NRFX_PPI_CHANNELS_USED_BY_PWM_SW \
    (BIT_MASK(DT_PROP(PWM_NRF5_SW_NODE, channel_count) * 2) \
         << DT_PROP(PWM_NRF5_SW_NODE, ppi_base))
#else
#define NRFX_PPI_CHANNELS_USED_BY_PWM_SW    0
#endif

/** @brief Bitmask that defines PPI groups that are reserved for use outside of the nrfx library. */
#define NRFX_PPI_GROUPS_USED    NRFX_PPI_GROUPS_USED_BY_BT_CTLR

#if defined(CONFIG_BT_CTLR)
extern const u32_t z_bt_ctlr_used_nrf_ppi_groups;
#define NRFX_PPI_GROUPS_USED_BY_BT_CTLR     z_bt_ctlr_used_nrf_ppi_groups
#else
#define NRFX_PPI_GROUPS_USED_BY_BT_CTLR     0
#endif

/** @brief Bitmask that defines EGU instances that are reserved for use outside of the nrfx library. */
#define NRFX_EGUS_USED          0

/** @brief Bitmask that defines TIMER instances that are reserved for use outside of the nrfx library. */
#define NRFX_TIMERS_USED        0

//------------------------------------------------------------------------------

/**
 * @brief Function helping to integrate nrfx IRQ handlers with IRQ_CONNECT.
 *
 * This function simply calls the nrfx IRQ handler supplied as the parameter.
 * It is intended to be used in the following way:
 * IRQ_CONNECT(IRQ_NUM, IRQ_PRI, nrfx_isr, nrfx_..._irq_handler, 0);
 *
 * @param[in] irq_handler  Pointer to the nrfx IRQ handler to be called.
 */
void nrfx_isr(void *irq_handler);

/** @} */

#ifdef __cplusplus
}
#endif

#endif // NRFX_GLUE_H__