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stm32f407xx.h
#define USB_OTG_HS_PERIPH_BASE 0x40040000UL
#define USB_OTG_HS ((USB_OTG_GlobalTypeDef *) USB_OTG_HS_PERIPH_BASE)
定义全局变量 USBD_HandleTypeDef hUsbDeviceHS;并默认全零初始化
/* USB Device handle structure */
typedef struct _USBD_HandleTypeDef
{
uint8_t id;
uint32_t dev_config;
uint32_t dev_default_config;
uint32_t dev_config_status;
USBD_SpeedTypeDef dev_speed;
USBD_EndpointTypeDef ep_in[16];
USBD_EndpointTypeDef ep_out[16];
__IO uint32_t ep0_state;
uint32_t ep0_data_len;
__IO uint8_t dev_state;
__IO uint8_t dev_old_state;
uint8_t dev_address;
uint8_t dev_connection_status;
uint8_t dev_test_mode;
uint32_t dev_remote_wakeup;
uint8_t ConfIdx;
USBD_SetupReqTypedef request;
USBD_DescriptorsTypeDef *pDesc;
USBD_ClassTypeDef *pClass[USBD_MAX_SUPPORTED_CLASS];
void *pClassData;
void *pClassDataCmsit[USBD_MAX_SUPPORTED_CLASS];
void *pUserData[USBD_MAX_SUPPORTED_CLASS];
void *pData;
void *pBosDesc;
void *pConfDesc;
uint32_t classId;
uint32_t NumClasses;
#ifdef USE_USBD_COMPOSITE
USBD_CompositeElementTypeDef tclasslist[USBD_MAX_SUPPORTED_CLASS];
#endif /* USE_USBD_COMPOSITE */
} USBD_HandleTypeDef;
定义全局变量USBD_DescriptorsTypeDef HS_Desc，并赋值初始化
/** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
* @brief Private variables.
* @{
*/
USBD_DescriptorsTypeDef HS_Desc =
{
USBD_HS_DeviceDescriptor
, USBD_HS_LangIDStrDescriptor
, USBD_HS_ManufacturerStrDescriptor
, USBD_HS_ProductStrDescriptor
, USBD_HS_SerialStrDescriptor
, USBD_HS_ConfigStrDescriptor
, USBD_HS_InterfaceStrDescriptor
#if (USBD_LPM_ENABLED == 1)
, USBD_HS_USR_BOSDescriptor
#endif /* (USBD_LPM_ENABLED == 1) */
};
//=====================================================//
//=====================================================//
/* USB Device descriptors structure */
typedef struct
{
uint8_t *(*GetDeviceDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *(*GetLangIDStrDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *(*GetManufacturerStrDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *(*GetProductStrDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *(*GetSerialStrDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *(*GetConfigurationStrDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
uint8_t *(*GetInterfaceStrDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
#if (USBD_CLASS_USER_STRING_DESC == 1)
uint8_t *(*GetUserStrDescriptor)(USBD_SpeedTypeDef speed, uint8_t idx, uint16_t *length);
#endif /* USBD_CLASS_USER_STRING_DESC */
#if ((USBD_LPM_ENABLED == 1U) || (USBD_CLASS_BOS_ENABLED == 1))
uint8_t *(*GetBOSDescriptor)(USBD_SpeedTypeDef speed, uint16_t *length);
#endif /* (USBD_LPM_ENABLED == 1U) || (USBD_CLASS_BOS_ENABLED == 1) */
} USBD_DescriptorsTypeDef;
//=====================================================//
//=====================================================//
/**
* @brief Return the device descriptor
* @param speed : Current device speed
* @param length : Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t * USBD_HS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
UNUSED(speed);
*length = sizeof(USBD_HS_DeviceDesc);
return USBD_HS_DeviceDesc;
}
/**
* @brief Return the LangID string descriptor
* @param speed : Current device speed
* @param length : Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t * USBD_HS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
UNUSED(speed);
*length = sizeof(USBD_LangIDDesc);
return USBD_LangIDDesc;
}
/**
* @brief Return the product string descriptor
* @param speed : current device speed
* @param length : pointer to data length variable
* @retval pointer to descriptor buffer
*/
uint8_t * USBD_HS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
if(speed == 0)
{
USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_HS, USBD_StrDesc, length);
}
else
{
USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_HS, USBD_StrDesc, length);
}
return USBD_StrDesc;
}
/**
* @brief Return the manufacturer string descriptor
* @param speed : Current device speed
* @param length : Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t * USBD_HS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
UNUSED(speed);
USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
return USBD_StrDesc;
}
/**
* @brief Return the serial number string descriptor
* @param speed : Current device speed
* @param length : Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t * USBD_HS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
UNUSED(speed);
*length = USB_SIZ_STRING_SERIAL;
/* Update the serial number string descriptor with the data from the unique
* ID */
Get_SerialNum();
/* USER CODE BEGIN USBD_HS_SerialStrDescriptor */
/* USER CODE END USBD_HS_SerialStrDescriptor */
return (uint8_t *) USBD_StringSerial;
}
/**
* @brief Return the configuration string descriptor
* @param speed : Current device speed
* @param length : Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t * USBD_HS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
if(speed == USBD_SPEED_HIGH)
{
USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_HS, USBD_StrDesc, length);
}
else
{
USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_HS, USBD_StrDesc, length);
}
return USBD_StrDesc;
}
/**
* @brief Return the interface string descriptor
* @param speed : Current device speed
* @param length : Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t * USBD_HS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
if(speed == 0)
{
USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_HS, USBD_StrDesc, length);
}
else
{
USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_HS, USBD_StrDesc, length);
}
return USBD_StrDesc;
}
#if (USBD_LPM_ENABLED == 1)
/**
* @brief Return the BOS descriptor
* @param speed : Current device speed
* @param length : Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t * USBD_HS_USR_BOSDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
{
UNUSED(speed);
*length = sizeof(USBD_HS_BOSDesc);
return (uint8_t*)USBD_HS_BOSDesc;
}
#endif /* (USBD_LPM_ENABLED == 1) */
全局宏定义，区分高速和全速USB
/* #define for FS and HS identification */
#define DEVICE_FS 0
#define DEVICE_HS 1/