int _bt_le_connection_update(const char *sender,
unsigned char *device_address,
float interval_min, float interval_max,
guint16 latency, guint16 time_out);
int _bt_le_connection_update(const char *sender,
unsigned char *device_address,
float interval_min, float interval_max,
guint16 latency, guint16 time_out);