描述 格式 注释 笔记 描述 Main items are used to either define or group certain types of data fields within a Report descriptor. There are two types of Main items: data and non-data. D...
描述 格式 注释 描述 The short item format packs the item size, type, and tag into the first byte. The first byte may be followed by 0, 1, 2, or 4 optional data bytes depending on the...
描述 格式 笔记 描述 Like the short item format, the long item format packs the item size, type, and tag into the first byte. The long item format uses a special item tag value to ind...