屏幕布对面的高手看过来ST公司的数据结构是什么意思

2万 · 2009-9-19 14:03

typedef union
{
  u16 whole;
  struct
  {
unsigned IMPLEMENTED : 1; /**< Indicates that the key is implemented (from Customer Code to TSL only) */
unsigned ENABLED    : 1; /**< Indicates that the key is enabled (from Customer Code to TSL only) */
unsigned DETECTED : 1; /**< Indicates that the key is detected (from TSL to Customer Code only) */
unsigned CHANGED    : 1; /**< Indicates that the key state has changed (from TSL to Customer Code only) */
unsigned POSCHANGED  : 1; /**< Indicates that the MC key position has changed (from TSL to Customer Code only) */
unsigned ERROR    : 1; /**< Indicates that the key has an error (from TSL to Customer Code only) */
unsigned NOISE    : 1; /**< Indicates that the key measurement has noise (from TSL to Customer Code only) */
unsigned LOCKED    : 1; /**< Reserved (TSL internal usage) */
unsigned DIRECTION : 1; /**< Reserved (TSL internal usage) */
unsigned MCKEY_TYPE  : 1; /**< Indicates the type of MCkey: Wheel(0) or Slider(1) (from Customer Code to TSL only) */
unsigned RESERVED0 : 1; /**< Reserved for future use */
unsigned RESERVED1 : 1; /**< Reserved for future use */
unsigned RESERVED2 : 1; /**< Reserved for future use */
unsigned RESERVED3 : 1; /**< Reserved for future use */
unsigned RESERVED4 : 1; /**< Reserved for future use */
unsigned RESERVED5 : 1; /**< Reserved for future use */
  } b;
} KeyFlag_T;

我不明白的是那个：号是什么意思