/* Create instance */
IAveragedBuffer* pThis = AveragedBufferCreate(...);
/* Add new value: pass `IAveragedBuffer*` to 1st argument */
AveragedBufferAdd(pThis, 100);
/* Acquire the average: pass `IAveragedBuffer*` to 1st argument */
AveragedBufferType value = AveragedBufferAverage(pThis);

/**
 * @brief   Configuration of the Averaged Buffer
 * @attention   The entity of configuration must be placed in the static area.
 *              The buffer might cause an unexpected behavior if configuration
 *              is placed in the stack area.
 */
static const AveragedBufferConfig configForSimple = {
    AVERAGED_BUFFER_ALGO_SIMPLE,    /* Averaging algorithm */
    128,    /* Length of the buffer */
    NULL    /* Parameter for averaging algorithm */
};

/**
 * @brief   Entity of simple averaging buffer
 */
static IAveragedBuffer* pSimple = AveragedBufferCreate(&configForSimple);

/**
 * @brief   Entity of weighted averaging buffer
 */
static IAveragedBuffer* pWeighted;

void func_initialize(void)
{
    /** Configuration for weighted averaging buffer
     * @attention   The buffer might cause an unexpected behavior if
     *              you remove `static` at next line.
     */
    static const AveragedBufferConfig configForWeighted = {
        AVERAGED_BUFFER_ALGO_WEIGHTED,
        10,
        &weightedConfig
    };
    /* Create the instance of weighted averaging buffer */
    pWeighted = AveragedBufferCreate(&configForWeighted);
}

void func_add(AveragedBufferType Value)
{
    /* Add value to each Averaged Buffers */
    AveragedBufferAdd(pSimple, Value);
    AveragedBufferAdd(pWeighted, Value);
}

void func_average(void)
{
    /** Acquire the average of simple averaging buffer.
     * The error code of this API will be disposed because
     * 2nd argument is NULL.
     */
    AveragedBufferType value1 = AveragedBufferAverage(pSimple, NULL);
    /** Acquire the average of weighted averaging buffer.
     * The error code of this API will be stored into `ErrorCode`.
     */
    AveragedBufferError ErrorCode;
    AveragedBufferType value2 = AveragedBufferAverage(pWeighted, &ErrorCode);
}