/**
 * Copyright (c) 2012 - 2021, 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, 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
 *    conditions and the following disclaimer in the documentation and/or other
 *    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.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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.
 *
 */
/**
 * This file contains the source code for a sample application using both Nordic Gazell proprietary
 * radio protocol and Bluetooth Low Energy radio protocol. In Bluetooth mode, it behave as a Heart
 * Rate sensor, in Gazell mode it behaves as a 'device'.
 */

#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "nrf_sdm.h"
#include "app_error.h"
#include "ble_app_gzll_device.h"
#include "ble_app_gzll_hr.h"
#include "ble_app_gzll_ui.h"
#include "ble_app_gzll_common.h"
#include "app_timer.h"
#include "nrf_drv_clock.h"
#include "bsp.h"
#include "nrf_pwr_mgmt.h"

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"

// Store current mode
volatile radio_mode_t running_mode = BLE;


/**@brief Function for initializing power management.
 */
static void power_management_init(void)
{
    ret_code_t err_code;
    err_code = nrf_pwr_mgmt_init();
    APP_ERROR_CHECK(err_code);
}


/**
 * @brief Function for application main entry.
 */
int main(void)
{
    uint32_t     err_code;
    radio_mode_t previous_mode = running_mode;

    // Setup logger.
    err_code = NRF_LOG_INIT(NULL);
    APP_ERROR_CHECK(err_code);

    NRF_LOG_DEFAULT_BACKENDS_INIT();

    NRF_LOG_INFO("Multiprotocol application example started.");
    NRF_LOG_INFO("BLE mode");

    power_management_init();
    ble_stack_start();
    NRF_LOG_FLUSH();

    // Initialize timer module, making it use the scheduler.
    err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);

    bsp_init_app();
    ble_hrs_app_start();

    // Enter main loop.
    for (;;)
    {
        NRF_LOG_FLUSH();
        nrf_pwr_mgmt_run();

        if (bsp_button_is_pressed(BLE_BUTTON_ID))
        {
            running_mode = BLE;
        }
        else if (bsp_button_is_pressed(GZLL_BUTTON_ID))
        {
            running_mode = GAZELL;
        }

        if (running_mode != previous_mode)
        {
            previous_mode = running_mode;
            if (running_mode == GAZELL)
            {
                NRF_LOG_INFO("Gazell mode");

                // Stop all heart rate functionality before disabling the SoftDevice.
                ble_hrs_app_stop();

                // Disable the softdevice stack.
                ble_stack_stop();

                // Request Low frequency clock to re-enable the clock after the softdevice stops it.
                nrf_drv_clock_lfclk_request(NULL);

                err_code = bsp_indication_set(BSP_INDICATE_IDLE);
                APP_ERROR_CHECK(err_code);

                // Enable Gazell.
                gzll_app_start();
            }
            else if (running_mode == BLE)
            {
                NRF_LOG_INFO("BLE mode");
                    
                // Disable low frequency clock. Readying for softdevice startup.
                nrf_drv_clock_lfclk_release();

                // Disable Gazell.
                gzll_app_stop();

                err_code = bsp_indication_set(BSP_INDICATE_IDLE);
                APP_ERROR_CHECK(err_code);

                // Re-enable the softdevice stack.
                ble_stack_start();
                ble_hrs_app_start();
            }
        }
    }
}


