/* int sensor_static_calibrate(int axis, void *buf,void *para) { int ret =-1; if(buf == NULL||para == NULL) return -1; if(tag == TAG_DEV_ACC) { ret = sensor_static_calibrate_acc(axis,buf,para); } else { } return ret; }  */
int find_empty_obj()
/* int sensor_static_calibrate(int axis, void *buf,void *para) { int ret =-1; if(buf == NULL||para == NULL) return -1; if(tag == TAG_DEV_ACC) { ret = sensor_static_calibrate_acc(axis,buf,para); } else { } return ret; }  */
int find_empty_obj()
{
    for(int i = 0;i < MAX_SRNSOR_NUM; i++)
    {
        if(g_sensor_static_para[i].in_use==0)
            return i;
    }
    return -1;
}