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 * Copyright (c) 2012 - 2018, Nordic Semiconductor ASA
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 * 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.
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 * 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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 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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 */
#include "ble_radio_notification.h"
#include <stdlib.h>


static bool                                 m_radio_active = false;  /**< Current radio state. */
static ble_radio_notification_evt_handler_t m_evt_handler  = NULL;   /**< Application event handler for handling Radio Notification events. */


void SWI1_IRQHandler(void)
{
    m_radio_active = !m_radio_active;
    if (m_evt_handler != NULL)
    {
        m_evt_handler(m_radio_active);
    }
}


uint32_t ble_radio_notification_init(uint32_t                             irq_priority,
                                     uint8_t                              distance,
                                     ble_radio_notification_evt_handler_t evt_handler)
{
    uint32_t err_code;

    m_evt_handler = evt_handler;

    // Initialize Radio Notification software interrupt
    err_code = sd_nvic_ClearPendingIRQ(SWI1_IRQn);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }

    err_code = sd_nvic_SetPriority(SWI1_IRQn, irq_priority);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }

    err_code = sd_nvic_EnableIRQ(SWI1_IRQn);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }

    // Configure the event
    return sd_radio_notification_cfg_set(NRF_RADIO_NOTIFICATION_TYPE_INT_ON_BOTH, distance);
}