* @return 0 on success, otherwise a negative error value
* @see If the gpio pin is not open, creates gpio handle before reading the value of gpio.
*/
-extern int resource_read_vibration_sensor(int pin_num, int *out_value);
+extern int resource_read_vibration_sensor(int pin_num, uint32_t *out_value);
#endif /* __POSITION_FINDER_RESOURCE_VIBRATION_SENSOR_H__ */