How to obtain the device ID using IPC SDK?

/**
 * \fn OPERATE_RET tuya_ipc_get_device_id
 * \brief get device ID
 * \
 * \return OPRT_OK if get device ID success .other is failed;
 */
OPERATE_RET tuya_ipc_get_device_id(IN OUT CHAR_T *devid, IN OUT INT_T * id_len);