owner-nrf52sdk/nRF5_SDK_17.0.2/modules/nrfx/drivers/include/nrfx_dppi.h

/**
 * Copyright (c) 2018 - 2020, Nordic Semiconductor ASA
 *
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
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 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
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 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
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 * 5. Any software provided in binary form under this license must not be reverse
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#ifndef NRFX_DPPI_H__
#define NRFX_DPPI_H__

#include <nrfx.h>
#include <hal/nrf_dppi.h>

/**
 * @defgroup nrfx_dppi DPPI allocator
 * @{
 * @ingroup nrf_dppi
 * @brief   Distributed Programmable Peripheral Interconnect (DPPI) allocator.
 */

#ifdef __cplusplus
extern "C" {
#endif

/** @brief Function for freeing all allocated channels and groups. */
void nrfx_dppi_free(void);

/**
 * @brief Function for allocating a DPPI channel.
 * @details This function allocates the first unused DPPI channel.
 *
 * @param[out] p_channel Pointer to the DPPI channel number that has been allocated.
 *
 * @retval NRFX_SUCCESS      The channel was successfully allocated.
 * @retval NRFX_ERROR_NO_MEM There is no available channel to be used.
 */
nrfx_err_t nrfx_dppi_channel_alloc(uint8_t * p_channel);

/**
 * @brief Function for freeing a DPPI channel.
 * @details This function also disables the chosen channel.
 *
 * @param[in] channel DPPI channel to be freed.
 *
 * @retval NRFX_SUCCESS             The channel was successfully freed.
 * @retval NRFX_ERROR_INVALID_PARAM The specified channel is not allocated.
 */
nrfx_err_t nrfx_dppi_channel_free(uint8_t channel);

/**
 * @brief Function for enabling a DPPI channel.
 *
 * @param[in] channel DPPI channel to be enabled.
 *
 * @retval NRFX_SUCCESS             The channel was successfully enabled.
 * @retval NRFX_ERROR_INVALID_PARAM The specified channel is not allocated.
 */
nrfx_err_t nrfx_dppi_channel_enable(uint8_t channel);

/**
 * @brief Function for disabling a DPPI channel.
 *
 * @param[in] channel DPPI channel to be disabled.
 *
 * @retval NRFX_SUCCESS             The channel was successfully disabled.
 * @retval NRFX_ERROR_INVALID_PARAM The specified channel is not allocated.
 */
nrfx_err_t nrfx_dppi_channel_disable(uint8_t channel);

/**
 * @brief Function for allocating a DPPI channel group.
 * @details This function allocates the first unused DPPI group.
 *
 * @param[out] p_group Pointer to the DPPI channel group that has been allocated.
 *
 * @retval NRFX_SUCCESS      The channel group was successfully allocated.
 * @retval NRFX_ERROR_NO_MEM There is no available channel group to be used.
 */
nrfx_err_t nrfx_dppi_group_alloc(nrf_dppi_channel_group_t * p_group);

/**
 * @brief Function for freeing a DPPI channel group.
 * @details This function also disables the chosen group.
 *
 * @param[in] group DPPI channel group to be freed.
 *
 * @retval NRFX_SUCCESS             The channel group was successfully freed.
 * @retval NRFX_ERROR_INVALID_PARAM The specified group is not allocated.
 */
nrfx_err_t nrfx_dppi_group_free(nrf_dppi_channel_group_t group);

/**
 * @brief Function for including a DPPI channel in a channel group.
 *
 * @param[in] channel DPPI channel to be added.
 * @param[in] group   Channel group in which to include the channel.
 *
 * @retval NRFX_SUCCESS             The channel was successfully included.
 * @retval NRFX_ERROR_INVALID_PARAM The specified group or channel is not allocated.
 */
nrfx_err_t nrfx_dppi_channel_include_in_group(uint8_t                  channel,
                                              nrf_dppi_channel_group_t group);

/**
 * @brief Function for removing a DPPI channel from a channel group.
 *
 * @param[in] channel DPPI channel to be removed.
 * @param[in] group   Channel group from which to remove the channel.
 *
 * @retval NRFX_SUCCESS             The channel was successfully removed.
 * @retval NRFX_ERROR_INVALID_PARAM The specified group or channel is not allocated.
 */
nrfx_err_t nrfx_dppi_channel_remove_from_group(uint8_t                  channel,
                                               nrf_dppi_channel_group_t group);

/**
 * @brief Function for clearing a DPPI channel group.
 *
 * @param[in] group Channel group to be cleared.
 *
 * @retval NRFX_SUCCESS             The group was successfully cleared.
 * @retval NRFX_ERROR_INVALID_PARAM The specified group is not allocated.
 */
nrfx_err_t nrfx_dppi_group_clear(nrf_dppi_channel_group_t group);

/**
 * @brief Function for enabling a DPPI channel group.
 *
 * @param[in] group Channel group to be enabled.
 *
 * @retval NRFX_SUCCESS             The group was successfully enabled.
 * @retval NRFX_ERROR_INVALID_PARAM The specified group is not allocated.
 */
nrfx_err_t nrfx_dppi_group_enable(nrf_dppi_channel_group_t group);

/**
 * @brief Function for disabling a DPPI channel group.
 *
 * @param[in] group Channel group to be disabled.
 *
 * @retval NRFX_SUCCESS             The group was successfully disabled.
 * @retval NRFX_ERROR_INVALID_PARAM The specified group is not allocated.
 */
nrfx_err_t nrfx_dppi_group_disable(nrf_dppi_channel_group_t group);

/** @} */

#ifdef __cplusplus
}
#endif

#endif // NRFX_DPPI_H__