measure_vbatt
ret = measure_vbatt(info, OCV_MODE_ACTIVE, &data);
ret = measure_vbatt(info, OCV_MODE_SLEEP, &ocv);
ret = measure_vbatt(info, OCV_MODE_ACTIVE, &data);
ret = measure_vbatt(info, OCV_MODE_ACTIVE, &data);
ret = measure_vbatt(info, OCV_MODE_ACTIVE, &data);
ret = measure_vbatt(info, OCV_MODE_ACTIVE, &data);
ret = measure_vbatt(info, OCV_MODE_ACTIVE, &data);