ant_sdm_common_data.c

/**
 * Copyright (c) 2015 - 2017, 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.
 * 
 */
#include "sdk_common.h"
#if NRF_MODULE_ENABLED(ANT_SDM)

#include "ant_sdm_common_data.h"
#include "ant_sdm_utils.h"

#define NRF_LOG_MODULE_NAME "ANT_SDM"
#if ANT_SDM_LOG_ENABLED
#define NRF_LOG_LEVEL       ANT_SDM_LOG_LEVEL
#define NRF_LOG_INFO_COLOR  ANT_SDM_INFO_COLOR
#else // ANT_SDM_LOG_ENABLED
#define NRF_LOG_LEVEL       0
#endif // ANT_SDM_LOG_ENABLED
#include "nrf_log.h"

/**@brief SDM common page data layout structure. */
typedef struct
{
    uint8_t reserved0[3];
    uint8_t speed_integer   :4;
    uint8_t reserved1       :4;
    uint8_t speed_fractional;
    uint8_t reserved2[2];
}ant_sdm_speed_data_layout_t;

/**@brief Function for tracing common data.
 *
 * @param[in]  p_common_data      Pointer to the common data.
 */
static void speed_data_log(ant_sdm_common_data_t const * p_common_data)
{
    uint32_t speed = ANT_SDM_SPEED_RESCALE(p_common_data->speed);
    UNUSED_VARIABLE(speed);

    NRF_LOG_INFO("Speed                                        %u.%02u m/s\r\n\n",
                 (unsigned int)(speed / ANT_SDM_SPEED_DISP_PRECISION),
                 (unsigned int)(speed % ANT_SDM_SPEED_DISP_PRECISION));
}

void ant_sdm_speed_encode(uint8_t                     * p_page_buffer,
                          ant_sdm_common_data_t const * p_common_data)
{
    ant_sdm_speed_data_layout_t * p_outcoming_data  = (ant_sdm_speed_data_layout_t *)p_page_buffer;
    uint16_t speed                                  = p_common_data->speed;

    p_outcoming_data->speed_integer                 = speed / ANT_SDM_SPEED_UNIT_REVERSAL;
    p_outcoming_data->speed_fractional              = speed % ANT_SDM_SPEED_UNIT_REVERSAL;

    speed_data_log(p_common_data);
}

void ant_sdm_speed_decode(uint8_t const         * p_page_buffer,
                          ant_sdm_common_data_t * p_common_data)
{
    ant_sdm_speed_data_layout_t const * p_incoming_data = (ant_sdm_speed_data_layout_t *)p_page_buffer;
    uint16_t                            speed           = (p_incoming_data->speed_integer
                                                        * ANT_SDM_SPEED_UNIT_REVERSAL)
                                                        + p_incoming_data->speed_fractional;

    p_common_data->speed  = speed;

    speed_data_log(p_common_data);
}

#endif // NRF_MODULE_ENABLED(ANT_SDM)