USB库的疑惑

只看该作者 · 2013-9-18 09:38

STM32的USB库里定义了这样的一个结构体
typedef struct _USER_STANDARD_REQUESTS
{
  void (*User_GetConfiguration)(void);    /* Get Configuration */
  void (*User_SetConfiguration)(void);    /* Set Configuration */
  void (*User_GetInterface)(void);          /* Get Interface */
  void (*User_SetInterface)(void);          /* Set Interface */
  void (*User_GetStatus)(void);             /* Get Status */
  void (*User_ClearFeature)(void);          /* Clear Feature */
  void (*User_SetEndPointFeature)(void);    /* Set Endpoint Feature */
  void (*User_SetDeviceFeature)(void);    /* Set Device Feature */
  void (*User_SetDeviceAddress)(void);    /* Set Device Address */
}USER_STANDARD_REQUESTS;

但是在调用时似乎是一个数组的形式
USER_STANDARD_REQUESTS User_Standard_Requests =
  {
Joystick_GetConfiguration,
Joystick_SetConfiguration,
Joystick_GetInterface,
Joystick_SetInterface,
Joystick_GetStatus,
Joystick_ClearFeature,
Joystick_SetEndPointFeature,
Joystick_SetDeviceFeature,
Joystick_SetDeviceAddress
  };

可以这样调用的吗，