STM32F4xx USB Host BgndProcess

[TAzja.1]

STM32F401

in usbh_def.h:

typedef struct
{
  const char          *Name;
  uint8_t              ClassCode;
  USBH_StatusTypeDef(*Init)(struct _USBH_HandleTypeDef *phost);
  USBH_StatusTypeDef(*DeInit)(struct _USBH_HandleTypeDef *phost);
  USBH_StatusTypeDef(*Requests)(struct _USBH_HandleTypeDef *phost);
  USBH_StatusTypeDef(*BgndProcess)(struct _USBH_HandleTypeDef *phost);
  USBH_StatusTypeDef(*SOFProcess)(struct _USBH_HandleTypeDef *phost);
  void                *pData;
} USBH_ClassTypeDef;

What function is BgndProcess exactly pointing to? I did a search in the project files, theres only 2 lines matching, one of which is a declaration of a pointer to a function, and the other being function call. Does anybody know what exactly this function does, and where in the files I can see the full function?

[Imen.D]

Hello @TAzja.1​ ,

BgndProcess: Class operation background process. Called from the core state machine during HOST_CLASS state.

You can refer to this UM1720 STM32Cube USB host library, it may help you.

Imen