void Task_Motion_Sensor(void) {
    static int16_t prev_acc_X=0, prev_acc_Y=0, prev_acc_Z=0;
    int16_t acc_X=0, acc_Y=0, acc_Z=0;
    uint8_t rf, gf, bf;

    SET_BIT(DEBUG_TASK_MOTION_SENSOR);          //  set task motion sensor bit high

    read_full_xyz(&acc_X, &acc_Y, &acc_Z);

    rf = abs(prev_acc_X - acc_X) > ACC_SENSITIVITY ? 1 : 0;
    gf = abs(prev_acc_Y - acc_Y) > ACC_SENSITIVITY ? 1 : 0;
    bf = abs(prev_acc_Z - acc_Z) > ACC_SENSITIVITY ? 1 : 0;

    Control_RGB_LEDs(rf, gf, bf);
    Delay(FLASH_DELAY);
    Control_RGB_LEDs(0, 0, 0);
    Delay(FLASH_DELAY*2);

    prev_acc_X = acc_X;
    prev_acc_Y = acc_Y;
    prev_acc_Z = acc_Z;
    CLEAR_BIT(DEBUG_TASK_MOTION_SENSOR);        //  set task motion sensor bit low
}