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/**
 * @brief This module contains buffer for frames received by nRF 802.15.4 radio driver.
 *
 */

#ifndef NRF_802154_RX_BUFFER_H_
#define NRF_802154_RX_BUFFER_H_

#include <stdbool.h>
#include <stdint.h>

#include "nrf_802154_const.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief Structure containing received frame.
 */
typedef struct
{
    uint8_t psdu[MAX_PACKET_SIZE + 1];
    bool    free; // If this buffer is free or contains a frame.
} rx_buffer_t;

/**
 * @brief Array containing all buffers used to receive frame.
 *
 * This array is in global scope to allow optimizations in Core module in case there is only
 * one buffer provided by this module.
 *
 */
extern rx_buffer_t nrf_802154_rx_buffers[];

/**
 * @brief Initialize buffer for received frames.
 */
void nrf_802154_rx_buffer_init(void);

/**
 * @brief Get free buffer to receive a frame.
 *
 * @return  Pointer to free buffer of NULL if no free buffer is available.
 */
rx_buffer_t * nrf_802154_rx_buffer_free_find(void);

#ifdef __cplusplus
}
#endif

#endif /* NRF_802154_RX_BUFFER_H_ */