DC_TAG dc_tag_add dc_tag_add_subscription DC_TAG_CALLBACK dc_tag_close dc_tag_error_code dc_tag_explain_quality DC_TAG_HANDLE dc_tag_init DC_TAG_MAX_RW_COUNT dc_tag_open dc_tag_read dc_tag_read_subscription dc_tag_remove dc_tag_remove_subscription dc_tag_uninit dc_tag_update dc_tag_write

void* dc_tag_add_subscription ( DC_TAG_HANDLE  tag_handles[], uint32_t  tag_count  ) Subscribe tags for read. If you need to read some tags periodically, you can subscribe these tags before read and call dc_tag_read_subscription to read tag values, this will achieve the best reading performance. Parameters [in] tag_handles The tag handle array contains all tag handles to be read. [in] tag_count The count of the tag handle in the tag_handles. Returns On success, a subscription context will returned, otherwise a NULL is returned. Examples: dc_tag_read_subscription.c.