Release v2.7.1

Class/AUDIO/Src/usbd_audio.c

@@ -162,8 +162,12 @@ __ALIGN_BEGIN static uint8_t USBD_AUDIO_CfgDesc[USB_AUDIO_CONFIG_DESC_SIZ] __ALI
   0x02,                                 /* bNumInterfaces */
   0x01,                                 /* bConfigurationValue */
   0x00,                                 /* iConfiguration */
-  0xC0,                                 /* bmAttributes  BUS Powred*/
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                 /* bMaxPower = 100 mA*/
+  0xC0,                                 /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                 /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                       /* bMaxPower = 100 mA */
   /* 09 byte*/
 
   /* USB Speaker Standard interface descriptor */
@@ -229,7 +233,7 @@ __ALIGN_BEGIN static uint8_t USBD_AUDIO_CfgDesc[USB_AUDIO_CONFIG_DESC_SIZ] __ALI
   0x00,                                 /* iTerminal */
   /* 09 byte*/
 
-  /* USB Speaker Standard AS Interface Descriptor - Audio Streaming Zero Bandwith */
+  /* USB Speaker Standard AS Interface Descriptor - Audio Streaming Zero Bandwidth */
   /* Interface 1, Alternate Setting 0                                             */
   AUDIO_INTERFACE_DESC_SIZE,            /* bLength */
   USB_DESC_TYPE_INTERFACE,              /* bDescriptorType */
@@ -424,6 +428,11 @@ static uint8_t USBD_AUDIO_Setup(USBD_HandleTypeDef *pdev,
 
   haudio = (USBD_AUDIO_HandleTypeDef *)pdev->pClassData;
 
+  if (haudio == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
     case USB_REQ_TYPE_CLASS:
@@ -490,7 +499,7 @@ static uint8_t USBD_AUDIO_Setup(USBD_HandleTypeDef *pdev,
             }
             else
             {
-          /* Call the error management function (command will be nacked */
+              /* Call the error management function (command will be NAKed */
               USBD_CtlError(pdev, req);
               ret = USBD_FAIL;
             }
@@ -562,6 +571,11 @@ static uint8_t USBD_AUDIO_EP0_RxReady(USBD_HandleTypeDef *pdev)
   USBD_AUDIO_HandleTypeDef *haudio;
   haudio = (USBD_AUDIO_HandleTypeDef *)pdev->pClassData;
 
+  if (haudio == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if (haudio->control.cmd == AUDIO_REQ_SET_CUR)
   {
     /* In this driver, to simplify code, only SET_CUR request is managed */
@@ -712,6 +726,11 @@ static uint8_t USBD_AUDIO_DataOut(USBD_HandleTypeDef *pdev, uint8_t epnum)
 
   haudio = (USBD_AUDIO_HandleTypeDef *)pdev->pClassData;
 
+  if (haudio == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if (epnum == AUDIO_OUT_EP)
   {
     /* Get received data packet length */
@@ -767,6 +786,11 @@ static void AUDIO_REQ_GetCurrent(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef
   USBD_AUDIO_HandleTypeDef *haudio;
   haudio = (USBD_AUDIO_HandleTypeDef *)pdev->pClassData;
 
+  if (haudio == NULL)
+  {
+    return;
+  }
+
   (void)USBD_memset(haudio->control.data, 0, 64U);
 
   /* Send the current mute state */
@@ -785,6 +809,11 @@ static void AUDIO_REQ_SetCurrent(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef
   USBD_AUDIO_HandleTypeDef *haudio;
   haudio = (USBD_AUDIO_HandleTypeDef *)pdev->pClassData;
 
+  if (haudio == NULL)
+  {
+    return;
+  }
+
   if (req->wLength != 0U)
   {
     /* Prepare the reception of the buffer over EP0 */

Class/BillBoard/Src/usbd_billboard.c

@@ -150,8 +150,12 @@ __ALIGN_BEGIN static uint8_t USBD_BB_CfgDesc[USB_BB_CONFIG_DESC_SIZ]  __ALIGN_EN
   0x01,                        /* bNumInterfaces: 1 interface */
   0x01,                        /* bConfigurationValue: Configuration value */
   USBD_IDX_CONFIG_STR,         /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                        /* bmAttributes: bus powered and Support Remote Wake-up */
+#if (USBD_SELF_POWERED == 1U)
-  0x00,                        /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xC0,                        /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                        /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,              /* MaxPower 100 mA: this current is used for detecting Vbus */
   /* 09 */
 
   /************** Descriptor of BillBoard interface ****************/
@@ -170,15 +174,19 @@ __ALIGN_BEGIN static uint8_t USBD_BB_CfgDesc[USB_BB_CONFIG_DESC_SIZ]  __ALIGN_EN
 /* USB device Other Speed Configuration Descriptor */
 __ALIGN_BEGIN static uint8_t USBD_BB_OtherSpeedCfgDesc[USB_BB_CONFIG_DESC_SIZ]   __ALIGN_END  =
 {
-  0x09,                        /* bLength: Configuation Descriptor size */
+  0x09,                        /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,
   USB_BB_CONFIG_DESC_SIZ,
   0x00,
   0x01,                        /* bNumInterfaces: 1 interface */
   0x01,                        /* bConfigurationValue: */
   USBD_IDX_CONFIG_STR,         /* iConfiguration: */
-  0xC0,                        /* bmAttributes: */
+#if (USBD_SELF_POWERED == 1U)
-  0x00,                        /* MaxPower 100 mA */
+  0xC0,                        /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                        /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,              /* MaxPower 100 mA */
 
   /************** Descriptor of BillBoard interface ****************/
   /* 09 */

Class/CDC/Inc/usbd_cdc.h

@@ -65,6 +65,7 @@ extern "C" {
 #define CDC_DATA_FS_IN_PACKET_SIZE                  CDC_DATA_FS_MAX_PACKET_SIZE
 #define CDC_DATA_FS_OUT_PACKET_SIZE                 CDC_DATA_FS_MAX_PACKET_SIZE
 
+#define CDC_REQ_MAX_DATA_SIZE                       0x7U
 /*---------------------------------------------------------------------*/
 /*  CDC definitions                                                    */
 /*---------------------------------------------------------------------*/

Class/CDC/Src/usbd_cdc.c

@@ -166,15 +166,18 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_CfgHSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN
   0x02,                                       /* bNumInterfaces: 2 interface */
   0x01,                                       /* bConfigurationValue: Configuration value */
   0x00,                                       /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                       /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                       /* MaxPower 0 mA */
+  0xC0,                                       /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                       /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                             /* MaxPower 100 mA */
 
   /*---------------------------------------------------------------------------*/
 
   /* Interface Descriptor */
   0x09,                                       /* bLength: Interface Descriptor size */
   USB_DESC_TYPE_INTERFACE,                    /* bDescriptorType: Interface */
-                                              /* Interface descriptor type */
   0x00,                                       /* bInterfaceNumber: Number of Interface */
   0x00,                                       /* bAlternateSetting: Alternate setting */
   0x01,                                       /* bNumEndpoints: One endpoints used */
@@ -262,8 +265,12 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_CfgFSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN
   0x02,                                       /* bNumInterfaces: 2 interface */
   0x01,                                       /* bConfigurationValue: Configuration value */
   0x00,                                       /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                       /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                       /* MaxPower 0 mA */
+  0xC0,                                       /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                       /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                             /* MaxPower 100 mA */
 
   /*---------------------------------------------------------------------------*/
 
@@ -348,15 +355,19 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_CfgFSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN
 
 __ALIGN_BEGIN static uint8_t USBD_CDC_OtherSpeedCfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
 {
-  0x09,                                       /* bLength: Configuation Descriptor size */
+  0x09,                                       /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,
   USB_CDC_CONFIG_DESC_SIZ,
   0x00,
   0x02,                                       /* bNumInterfaces: 2 interfaces */
   0x01,                                       /* bConfigurationValue: */
   0x04,                                       /* iConfiguration: */
-  0xC0,                                       /* bmAttributes: */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                       /* MaxPower 100 mA */
+  0xC0,                                       /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                       /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                             /* MaxPower 100 mA */
 
   /*Interface Descriptor */
   0x09,                                       /* bLength: Interface Descriptor size */
@@ -576,10 +587,16 @@ static uint8_t USBD_CDC_Setup(USBD_HandleTypeDef *pdev,
                               USBD_SetupReqTypedef *req)
 {
   USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
+  uint16_t len;
   uint8_t ifalt = 0U;
   uint16_t status_info = 0U;
   USBD_StatusTypeDef ret = USBD_OK;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
     case USB_REQ_TYPE_CLASS:
@@ -591,7 +608,8 @@ static uint8_t USBD_CDC_Setup(USBD_HandleTypeDef *pdev,
                                                             (uint8_t *)hcdc->data,
                                                             req->wLength);
 
-          (void)USBD_CtlSendData(pdev, (uint8_t *)hcdc->data, req->wLength);
+          len = MIN(CDC_REQ_MAX_DATA_SIZE, req->wLength);
+          (void)USBD_CtlSendData(pdev, (uint8_t *)hcdc->data, len);
         }
         else
         {
@@ -740,6 +758,11 @@ static uint8_t USBD_CDC_EP0_RxReady(USBD_HandleTypeDef *pdev)
 {
   USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if ((pdev->pUserData != NULL) && (hcdc->CmdOpCode != 0xFFU))
   {
     ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(hcdc->CmdOpCode,
@@ -836,6 +859,11 @@ uint8_t USBD_CDC_SetTxBuffer(USBD_HandleTypeDef *pdev,
 {
   USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   hcdc->TxBuffer = pbuff;
   hcdc->TxLength = length;
 
@@ -852,6 +880,11 @@ uint8_t USBD_CDC_SetRxBuffer(USBD_HandleTypeDef *pdev, uint8_t *pbuff)
 {
   USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   hcdc->RxBuffer = pbuff;
 
   return (uint8_t)USBD_OK;

Class/CDC/Src/usbd_cdc_if_template.c

@@ -213,7 +213,7 @@ static int8_t TEMPLATE_Receive(uint8_t *Buf, uint32_t *Len)
 
 /**
   * @brief  TEMPLATE_TransmitCplt
-  *         Data transmited callback
+  *         Data transmitted callback
   *
   *         @note
   *         This function is IN transfer complete callback used to inform user that

Class/CDC_ECM/Inc/usbd_cdc_ecm.h

@@ -75,6 +75,8 @@ extern "C" {
 
 #define CDC_ECM_CONFIG_DESC_SIZ                         79U
 
+#define CDC_ECM_DATA_BUFFER_SIZE                        2000U
+
 #define CDC_ECM_DATA_HS_IN_PACKET_SIZE                  CDC_ECM_DATA_HS_MAX_PACKET_SIZE
 #define CDC_ECM_DATA_HS_OUT_PACKET_SIZE                 CDC_ECM_DATA_HS_MAX_PACKET_SIZE
 
@@ -173,7 +175,7 @@ typedef struct
 
 typedef struct
 {
-  uint32_t data[2000 / 4];      /* Force 32bits alignment */
+  uint32_t data[CDC_ECM_DATA_BUFFER_SIZE / 4];      /* Force 32bits alignment */
   uint8_t  CmdOpCode;
   uint8_t  CmdLength;
   uint8_t  Reserved1;  /* Reserved Byte to force 4 bytes alignment of following fields */

Class/CDC_ECM/Src/usbd_cdc_ecm.c

@@ -113,7 +113,8 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_ECM_DeviceQualifierDesc[USB_LEN_DEV_QUALIF
 };
 
 static uint32_t ConnSpeedTab[2] = {CDC_ECM_CONNECT_SPEED_UPSTREAM,
-                                   CDC_ECM_CONNECT_SPEED_DOWNSTREAM};
+                                   CDC_ECM_CONNECT_SPEED_DOWNSTREAM
+                                  };
 
 /**
   * @}
@@ -157,8 +158,12 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_ECM_CfgHSDesc[] __ALIGN_END =
   0x02,                                     /* bNumInterfaces: 2 interface */
   0x01,                                     /* bConfigurationValue: Configuration value */
   0x00,                                     /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                     /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                     /* MaxPower 0 mA */
+  0xC0,                                     /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                     /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                           /* MaxPower 100 mA */
 
   /*---------------------------------------------------------------------------*/
 
@@ -265,8 +270,12 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_ECM_CfgFSDesc[] __ALIGN_END =
   0x02,                                     /* bNumInterfaces: 2 interface */
   0x01,                                     /* bConfigurationValue: Configuration value */
   0x00,                                     /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                     /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                     /* MaxPower 0 mA */
+  0xC0,                                     /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                     /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                           /* MaxPower 100 mA */
 
   /*---------------------------------------------------------------------------*/
   /* IAD descriptor */
@@ -371,8 +380,12 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_ECM_OtherSpeedCfgDesc[] __ALIGN_END =
   0x02,                                     /* bNumInterfaces: 2 interface */
   0x01,                                     /* bConfigurationValue: Configuration value */
   0x04,                                     /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                     /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                     /* MaxPower 0 mA */
+  0xC0,                                     /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                     /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                           /* MaxPower 100 mA */
 
   /*--------------------------------------- ------------------------------------*/
   /* IAD descriptor */
@@ -602,8 +615,14 @@ static uint8_t USBD_CDC_ECM_Setup(USBD_HandleTypeDef *pdev,
   USBD_CDC_ECM_HandleTypeDef *hcdc = (USBD_CDC_ECM_HandleTypeDef *) pdev->pClassData;
   USBD_CDC_ECM_ItfTypeDef *EcmInterface = (USBD_CDC_ECM_ItfTypeDef *)pdev->pUserData;
   USBD_StatusTypeDef ret = USBD_OK;
-  uint8_t ifalt = 0U;
+  uint16_t len;
   uint16_t status_info = 0U;
+  uint8_t ifalt = 0U;
+
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
 
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
@@ -615,7 +634,8 @@ static uint8_t USBD_CDC_ECM_Setup(USBD_HandleTypeDef *pdev,
           EcmInterface->Control(req->bRequest,
                                 (uint8_t *)hcdc->data, req->wLength);
 
-        (void)USBD_CtlSendData(pdev, (uint8_t *)hcdc->data, req->wLength);
+          len = MIN(CDC_ECM_DATA_BUFFER_SIZE, req->wLength);
+          (void)USBD_CtlSendData(pdev, (uint8_t *)hcdc->data, len);
         }
         else
         {
@@ -769,7 +789,7 @@ static uint8_t USBD_CDC_ECM_DataOut(USBD_HandleTypeDef *pdev, uint8_t epnum)
     if ((CurrPcktLen < hcdc->MaxPcktLen) || (hcdc->RxLength >= CDC_ECM_ETH_MAX_SEGSZE))
     {
       /* USB data will be immediately processed, this allow next USB traffic being
-      NACKed till the end of the application Xfer */
+      NAKed till the end of the application Xfer */
 
       /* Process data by application (ie. copy to app buffer or notify user)
       hcdc->RxLength must be reset to zero at the end of the call of this function */
@@ -801,6 +821,11 @@ static uint8_t USBD_CDC_ECM_EP0_RxReady(USBD_HandleTypeDef *pdev)
 {
   USBD_CDC_ECM_HandleTypeDef *hcdc = (USBD_CDC_ECM_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if ((pdev->pUserData != NULL) && (hcdc->CmdOpCode != 0xFFU))
   {
     ((USBD_CDC_ECM_ItfTypeDef *)pdev->pUserData)->Control(hcdc->CmdOpCode,
@@ -924,6 +949,11 @@ uint8_t USBD_CDC_ECM_SetTxBuffer(USBD_HandleTypeDef *pdev, uint8_t *pbuff, uint3
 {
   USBD_CDC_ECM_HandleTypeDef *hcdc = (USBD_CDC_ECM_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   hcdc->TxBuffer = pbuff;
   hcdc->TxLength = length;
 
@@ -941,6 +971,11 @@ uint8_t USBD_CDC_ECM_SetRxBuffer(USBD_HandleTypeDef *pdev, uint8_t *pbuff)
 {
   USBD_CDC_ECM_HandleTypeDef *hcdc = (USBD_CDC_ECM_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   hcdc->RxBuffer = pbuff;
 
   return (uint8_t)USBD_OK;
@@ -1019,6 +1054,11 @@ uint8_t USBD_CDC_ECM_SendNotification(USBD_HandleTypeDef *pdev,
   USBD_CDC_ECM_HandleTypeDef *hcdc = (USBD_CDC_ECM_HandleTypeDef *)pdev->pClassData;
   USBD_StatusTypeDef ret = USBD_OK;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Initialize the request fields */
   (hcdc->Req).bmRequest = CDC_ECM_BMREQUEST_TYPE_ECM;
   (hcdc->Req).bRequest = (uint8_t)Notif;

Class/CDC_ECM/Src/usbd_cdc_ecm_if_template.c

@@ -201,7 +201,7 @@ static int8_t CDC_ECM_Itf_Receive(uint8_t *Buf, uint32_t *Len)
 
 /**
   * @brief  CDC_ECM_Itf_TransmitCplt
-  *         Data transmited callback
+  *         Data transmitted callback
   *
   *         @note
   *         This function is IN transfer complete callback used to inform user that

Class/CDC_RNDIS/Src/usbd_cdc_rndis.c

@@ -144,10 +144,12 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_RNDIS_DeviceQualifierDesc[USB_LEN_DEV_QUAL
 };
 
 static uint8_t MAC_StrDesc[6] = {CDC_RNDIS_MAC_ADDR0, CDC_RNDIS_MAC_ADDR1, CDC_RNDIS_MAC_ADDR2,
-                                 CDC_RNDIS_MAC_ADDR3, CDC_RNDIS_MAC_ADDR4, CDC_RNDIS_MAC_ADDR5};
+                                 CDC_RNDIS_MAC_ADDR3, CDC_RNDIS_MAC_ADDR4, CDC_RNDIS_MAC_ADDR5
+                                };
 
 static uint32_t ConnSpeedTab[2] = {CDC_RNDIS_CONNECT_SPEED_UPSTREAM,
-                                   CDC_RNDIS_CONNECT_SPEED_DOWNSTREAM};
+                                   CDC_RNDIS_CONNECT_SPEED_DOWNSTREAM
+                                  };
 
 static uint8_t EmptyResponse = 0x00U;
 
@@ -193,8 +195,12 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_RNDIS_CfgHSDesc[] __ALIGN_END =
   0x02,                                        /* bNumInterfaces: 2 interface */
   0x01,                                        /* bConfigurationValue: Configuration value */
   0x00,                                        /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                        /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                        /* MaxPower 0 mA */
+  0xC0,                                        /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                        /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                              /* MaxPower 100 mA */
 
   /*---------------------------------------------------------------------------*/
   /* IAD descriptor */
@@ -298,8 +304,12 @@ __ALIGN_BEGIN static uint8_t  USBD_CDC_RNDIS_CfgFSDesc[] __ALIGN_END =
   0x02,                                        /* bNumInterfaces: 2 interface */
   0x01,                                        /* bConfigurationValue: Configuration value */
   0x00,                                        /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                        /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                        /* MaxPower 0 mA */
+  0xC0,                                        /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                        /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                              /* MaxPower 100 mA */
 
   /*---------------------------------------------------------------------------*/
   /* IAD descriptor */
@@ -401,8 +411,12 @@ __ALIGN_BEGIN static uint8_t USBD_CDC_RNDIS_OtherSpeedCfgDesc[] __ALIGN_END =
   0x02,                                        /* bNumInterfaces: 2 interface */
   0x01,                                        /* bConfigurationValue: Configuration value */
   0x04,                                        /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                        /* bmAttributes: self powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                        /* MaxPower 0 mA */
+  0xC0,                                        /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                        /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                              /* MaxPower 100 mA */
 
   /*---------------------------------------------------------------------------*/
   /* IAD descriptor */
@@ -662,6 +676,11 @@ static uint8_t USBD_CDC_RNDIS_Setup(USBD_HandleTypeDef *pdev,
   uint16_t status_info = 0U;
   USBD_StatusTypeDef ret = USBD_OK;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
     case USB_REQ_TYPE_CLASS :
@@ -867,7 +886,7 @@ static uint8_t USBD_CDC_RNDIS_DataOut(USBD_HandleTypeDef *pdev, uint8_t epnum)
         (hcdc->RxLength >= (CDC_RNDIS_ETH_MAX_SEGSZE + sizeof(USBD_CDC_RNDIS_PacketMsgTypeDef))))
     {
       /* USB data will be immediately processed, this allow next USB traffic being
-      NACKed till the end of the application Xfer */
+      NAKed till the end of the application Xfer */
 
       /* Call data packet message parsing and processing function */
       (void)USBD_CDC_RNDIS_ProcessPacketMsg(pdev, (USBD_CDC_RNDIS_PacketMsgTypeDef *)(void *)hcdc->RxBuffer);
@@ -898,6 +917,11 @@ static uint8_t USBD_CDC_RNDIS_EP0_RxReady(USBD_HandleTypeDef *pdev)
 {
   USBD_CDC_RNDIS_HandleTypeDef *hcdc = (USBD_CDC_RNDIS_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if ((pdev->pUserData != NULL) && (hcdc->CmdOpCode != 0xFFU))
   {
     /* Check if the received command is SendEncapsulated command */
@@ -1034,6 +1058,11 @@ uint8_t USBD_CDC_RNDIS_SetTxBuffer(USBD_HandleTypeDef *pdev, uint8_t *pbuff, uin
 {
   USBD_CDC_RNDIS_HandleTypeDef *hcdc = (USBD_CDC_RNDIS_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   hcdc->TxBuffer = pbuff;
   hcdc->TxLength = length;
 
@@ -1051,6 +1080,11 @@ uint8_t USBD_CDC_RNDIS_SetRxBuffer(USBD_HandleTypeDef *pdev, uint8_t *pbuff)
 {
   USBD_CDC_RNDIS_HandleTypeDef *hcdc = (USBD_CDC_RNDIS_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   hcdc->RxBuffer = pbuff;
 
   return (uint8_t)USBD_OK;
@@ -1154,6 +1188,11 @@ uint8_t USBD_CDC_RNDIS_SendNotification(USBD_HandleTypeDef *pdev,
   UNUSED(bVal);
   UNUSED(pData);
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Initialize the request fields */
   (hcdc->Req).bmRequest = CDC_RNDIS_BMREQUEST_TYPE_RNDIS;
   (hcdc->Req).bRequest = (uint8_t)Notif;
@@ -1164,10 +1203,12 @@ uint8_t USBD_CDC_RNDIS_SendNotification(USBD_HandleTypeDef *pdev,
       (hcdc->Req).wValue = 0U;
       (hcdc->Req).wIndex = CDC_RNDIS_CMD_ITF_NBR;
       (hcdc->Req).wLength = 0U;
+
       for (Idx = 0U; Idx < 8U; Idx++)
       {
         (hcdc->Req).data[Idx] = 0U;
       }
+
       ReqSize = 8U;
       break;
 
@@ -1264,6 +1305,11 @@ static uint8_t USBD_CDC_RNDIS_ProcessInitMsg(USBD_HandleTypeDef *pdev,
   /* Store the Message Request ID */
   uint32_t ReqId = InitMessage->ReqId;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Check correctness of the message (MsgType already checked by entry to this function) */
   if ((InitMessage->MsgLength != sizeof(USBD_CDC_RNDIS_InitMsgTypeDef)) || \
       (InitMessage->MajorVersion < CDC_RNDIS_VERSION_MAJOR))
@@ -1315,10 +1361,15 @@ static uint8_t USBD_CDC_RNDIS_ProcessHaltMsg(USBD_HandleTypeDef *pdev,
   /* Get the CDC_RNDIS handle pointer */
   USBD_CDC_RNDIS_HandleTypeDef *hcdc = (USBD_CDC_RNDIS_HandleTypeDef *)pdev->pClassData;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Set CDC_RNDIS state to INITIALIZED */
   hcdc->State = CDC_RNDIS_STATE_UNINITIALIZED;
 
-  /* No response required for this message, so no notification (RESPNSE_AVAILABLE) is sent */
+  /* No response required for this message, so no notification (RESPONSE_AVAILABLE) is sent */
 
   UNUSED(Msg);
 
@@ -1345,6 +1396,11 @@ static uint8_t USBD_CDC_RNDIS_ProcessKeepAliveMsg(USBD_HandleTypeDef *pdev,
   /* Store the Message Request ID */
   uint32_t ReqId = Msg->ReqId;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Check correctness of the message (MsgType already checked by entry to this function) */
   if (Msg->MsgLength != sizeof(USBD_CDC_RNDIS_KpAliveMsgTypeDef))
   {
@@ -1390,6 +1446,11 @@ static uint8_t USBD_CDC_RNDIS_ProcessQueryMsg(USBD_HandleTypeDef *pdev,
   /* Store the Message Request ID */
   uint32_t ReqId = Msg->RequestId;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Process the OID depending on its code */
   switch (Msg->Oid)
   {
@@ -1533,6 +1594,11 @@ static uint8_t USBD_CDC_RNDIS_ProcessSetMsg(USBD_HandleTypeDef *pdev,
   /* Store the Message Request ID */
   uint32_t ReqId = SetMessage->ReqId;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (SetMessage->Oid)
   {
     case OID_GEN_CURRENT_PACKET_FILTER:
@@ -1584,6 +1650,11 @@ static uint8_t USBD_CDC_RNDIS_ProcessResetMsg(USBD_HandleTypeDef *pdev,
   /* Use same Msg input buffer as response buffer */
   USBD_CDC_RNDIS_ResetCpltMsgTypeDef *ResetResponse = (USBD_CDC_RNDIS_ResetCpltMsgTypeDef *)(void *)Msg;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if ((ResetMessage->MsgLength != sizeof(USBD_CDC_RNDIS_ResetMsgTypeDef)) || \
       (ResetMessage->Reserved != 0U))
   {
@@ -1631,13 +1702,18 @@ static uint8_t USBD_CDC_RNDIS_ProcessPacketMsg(USBD_HandleTypeDef *pdev,
   /* Get and format the Msg input */
   USBD_CDC_RNDIS_PacketMsgTypeDef *PacketMsg = (USBD_CDC_RNDIS_PacketMsgTypeDef *)Msg;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Check correctness of the message */
   if ((PacketMsg->MsgType != CDC_RNDIS_PACKET_MSG_ID))
   {
     return (uint8_t)USBD_FAIL;
   }
 
-  /* Point to the payload and udpate the message length */
+  /* Point to the payload and update the message length */
 
   /* Use temporary storage variables to comply with MISRA-C 2012 rule of (+) operand allowed types */
   tmp1 = (uint32_t)PacketMsg;
@@ -1668,6 +1744,11 @@ static uint8_t USBD_CDC_RNDIS_ProcessUnsupportedMsg(USBD_HandleTypeDef *pdev,
   /* Use same Msg input buffer as response buffer */
   USBD_CDC_RNDIS_StsChangeMsgTypeDef *Response = (USBD_CDC_RNDIS_StsChangeMsgTypeDef *)(void *)Msg;
 
+  if (hcdc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   /* Setup the response buffer content */
   Response->MsgType = CDC_RNDIS_INDICATE_STATUS_MSG_ID;
   Response->MsgLength = sizeof(USBD_CDC_RNDIS_StsChangeMsgTypeDef);

Class/CDC_RNDIS/Src/usbd_cdc_rndis_if_template.c

@@ -186,7 +186,7 @@ static int8_t CDC_RNDIS_Itf_Receive(uint8_t *Buf, uint32_t *Len)
 
 /**
   * @brief  CDC_RNDIS_Itf_TransmitCplt
-  *         Data transmited callback
+  *         Data transmitted callback
   *
   *         @note
   *         This function is IN transfer complete callback used to inform user that

Class/CustomHID/Inc/usbd_customhid.h

@@ -42,10 +42,16 @@ extern "C" {
   * @{
   */
 #define CUSTOM_HID_EPIN_ADDR                         0x81U
+
+#ifndef CUSTOM_HID_EPIN_SIZE
 #define CUSTOM_HID_EPIN_SIZE                         0x02U
+#endif
 
 #define CUSTOM_HID_EPOUT_ADDR                        0x01U
+
+#ifndef CUSTOM_HID_EPOUT_SIZE
 #define CUSTOM_HID_EPOUT_SIZE                        0x02U
+#endif
 
 #define USB_CUSTOM_HID_CONFIG_DESC_SIZ               41U
 #define USB_CUSTOM_HID_DESC_SIZ                      9U

Class/CustomHID/Src/usbd_customhid.c

@@ -128,14 +128,17 @@ __ALIGN_BEGIN static uint8_t USBD_CUSTOM_HID_CfgFSDesc[USB_CUSTOM_HID_CONFIG_DES
 {
   0x09,                                               /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                        /* bDescriptorType: Configuration */
-  USB_CUSTOM_HID_CONFIG_DESC_SIZ,
+  USB_CUSTOM_HID_CONFIG_DESC_SIZ,                     /* wTotalLength: Bytes returned */
-                                                      /* wTotalLength: Bytes returned */
   0x00,
   0x01,                                               /* bNumInterfaces: 1 interface */
   0x01,                                               /* bConfigurationValue: Configuration value */
   0x00,                                               /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                               /* bmAttributes: bus powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                               /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xC0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                               /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                     /* MaxPower 100 mA: this current is used for detecting Vbus */
 
   /************** Descriptor of CUSTOM HID interface ****************/
   /* 09 */
@@ -186,14 +189,17 @@ __ALIGN_BEGIN static uint8_t USBD_CUSTOM_HID_CfgHSDesc[USB_CUSTOM_HID_CONFIG_DES
 {
   0x09,                                               /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                        /* bDescriptorType: Configuration */
-  USB_CUSTOM_HID_CONFIG_DESC_SIZ,
+  USB_CUSTOM_HID_CONFIG_DESC_SIZ,                     /* wTotalLength: Bytes returned */
-                                                      /* wTotalLength: Bytes returned */
   0x00,
   0x01,                                               /* bNumInterfaces: 1 interface */
   0x01,                                               /* bConfigurationValue: Configuration value */
   0x00,                                               /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                               /* bmAttributes: bus powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                               /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xC0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                               /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                     /* MaxPower 100 mA: this current is used for detecting Vbus */
 
   /************** Descriptor of CUSTOM HID interface ****************/
   /* 09 */
@@ -244,14 +250,17 @@ __ALIGN_BEGIN static uint8_t USBD_CUSTOM_HID_OtherSpeedCfgDesc[USB_CUSTOM_HID_CO
 {
   0x09,                                               /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                        /* bDescriptorType: Configuration */
-  USB_CUSTOM_HID_CONFIG_DESC_SIZ,
+  USB_CUSTOM_HID_CONFIG_DESC_SIZ,                     /* wTotalLength: Bytes returned */
-                                                      /* wTotalLength: Bytes returned */
   0x00,
   0x01,                                               /* bNumInterfaces: 1 interface */
   0x01,                                               /* bConfigurationValue: Configuration value */
   0x00,                                               /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                               /* bmAttributes: bus powered */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                               /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xC0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                               /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                     /* MaxPower 100 mA: this current is used for detecting Vbus */
 
   /************** Descriptor of CUSTOM HID interface ****************/
   /* 09 */
@@ -282,7 +291,7 @@ __ALIGN_BEGIN static uint8_t USBD_CUSTOM_HID_OtherSpeedCfgDesc[USB_CUSTOM_HID_CO
 
   CUSTOM_HID_EPIN_ADDR,                               /* bEndpointAddress: Endpoint Address (IN) */
   0x03,                                               /* bmAttributes: Interrupt endpoint */
-  CUSTOM_HID_EPIN_SIZE,                               /* wMaxPacketSize: 2 Byte max */
+  CUSTOM_HID_EPIN_SIZE,                               /* wMaxPacketSize: 2 Bytes max */
   0x00,
   CUSTOM_HID_FS_BINTERVAL,                            /* bInterval: Polling Interval */
   /* 34 */
@@ -412,7 +421,7 @@ static uint8_t USBD_CUSTOM_HID_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
   pdev->ep_out[CUSTOM_HID_EPOUT_ADDR & 0xFU].is_used = 0U;
   pdev->ep_out[CUSTOM_HID_EPOUT_ADDR & 0xFU].bInterval = 0U;
 
-  /* FRee allocated memory */
+  /* Free allocated memory */
   if (pdev->pClassData != NULL)
   {
     ((USBD_CUSTOM_HID_ItfTypeDef *)pdev->pUserData)->DeInit();
@@ -439,6 +448,11 @@ static uint8_t USBD_CUSTOM_HID_Setup(USBD_HandleTypeDef *pdev,
   uint16_t status_info = 0U;
   USBD_StatusTypeDef ret = USBD_OK;
 
+  if (hhid == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
     case USB_REQ_TYPE_CLASS:
@@ -704,6 +718,11 @@ static uint8_t USBD_CUSTOM_HID_EP0_RxReady(USBD_HandleTypeDef *pdev)
 {
   USBD_CUSTOM_HID_HandleTypeDef *hhid = (USBD_CUSTOM_HID_HandleTypeDef *)pdev->pClassData;
 
+  if (hhid == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if (hhid->IsReportAvailable == 1U)
   {
     ((USBD_CUSTOM_HID_ItfTypeDef *)pdev->pUserData)->OutEvent(hhid->Report_buf[0],

Class/DFU/Src/usbd_dfu.c

@@ -153,16 +153,19 @@ USBD_ClassTypeDef USBD_DFU =
 /* USB DFU device Configuration Descriptor */
 __ALIGN_BEGIN static uint8_t USBD_DFU_CfgDesc[USB_DFU_CONFIG_DESC_SIZ] __ALIGN_END =
 {
-  0x09,                                                /* bLength: Configuation Descriptor size */
+  0x09,                                                /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                         /* bDescriptorType: Configuration */
-  USB_DFU_CONFIG_DESC_SIZ,
+  USB_DFU_CONFIG_DESC_SIZ,                             /* wTotalLength: Bytes returned */
-                                                       /* wTotalLength: Bytes returned */
   0x00,
   0x01,                                                /* bNumInterfaces: 1 interface */
   0x01,                                                /* bConfigurationValue: Configuration value */
   0x02,                                                /* iConfiguration: Index of string descriptor describing the configuration */
-  0xC0,                                                /* bmAttributes: bus powered and Supprts Remote Wakeup */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                                /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xC0,                                                /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                                /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                      /* MaxPower 100 mA: this current is used for detecting Vbus */
   /* 09 */
 
   /**********  Descriptor of DFU interface 0 Alternate setting 0 **************/
@@ -337,6 +340,11 @@ static uint8_t USBD_DFU_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *re
   uint16_t len = 0U;
   uint16_t status_info = 0U;
 
+  if (hdfu == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
     case USB_REQ_TYPE_CLASS:
@@ -405,7 +413,7 @@ static uint8_t USBD_DFU_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *re
         case USB_REQ_GET_INTERFACE:
           if (pdev->dev_state == USBD_STATE_CONFIGURED)
           {
-        (void)USBD_CtlSendData(pdev, (uint8_t *)hdfu->alt_setting, 1U);
+            (void)USBD_CtlSendData(pdev, (uint8_t *)&hdfu->alt_setting, 1U);
           }
           else
           {
@@ -429,7 +437,7 @@ static uint8_t USBD_DFU_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *re
           }
           else
           {
-        /* Call the error management function (command will be nacked */
+            /* Call the error management function (command will be NAKed */
             USBD_CtlError(pdev, req);
             ret = USBD_FAIL;
           }
@@ -495,6 +503,11 @@ static uint8_t  USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev)
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
   USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData;
 
+  if (hdfu == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if (hdfu->dev_state == DFU_STATE_DNLOAD_BUSY)
   {
     /* Decode the Special Command */
@@ -504,7 +517,7 @@ static uint8_t  USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev)
       {
         if (hdfu->buffer.d8[0] == DFU_CMD_GETCOMMANDS)
         {
-          /* nothink to do */
+          /* Nothing to do */
         }
       }
       else if (hdfu->wlength == 5U)
@@ -530,7 +543,7 @@ static uint8_t  USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev)
         }
         else
         {
-          /* .. */
+          return (uint8_t)USBD_FAIL;
         }
       }
       else
@@ -538,7 +551,7 @@ static uint8_t  USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev)
         /* Reset the global length and block number */
         hdfu->wlength = 0U;
         hdfu->wblock_num = 0U;
-        /* Call the error management function (command will be nacked) */
+        /* Call the error management function (command will be NAKed) */
         req.bmRequest = 0U;
         req.wLength = 1U;
         USBD_CtlError(pdev, &req);
@@ -552,7 +565,7 @@ static uint8_t  USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev)
         /* Decode the required address */
         addr = ((hdfu->wblock_num - 2U) * USBD_DFU_XFER_SIZE) + hdfu->data_ptr;
 
-        /* Preform the write operation */
+        /* Perform the write operation */
         if (DfuInterface->Write(hdfu->buffer.d8, (uint8_t *)addr, hdfu->wlength) != USBD_OK)
         {
           return (uint8_t)USBD_FAIL;
@@ -579,7 +592,7 @@ static uint8_t  USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev)
   }
   else
   {
-    /* .. */
+    return (uint8_t)USBD_FAIL;
   }
 
   return (uint8_t)USBD_OK;
@@ -615,7 +628,7 @@ static uint8_t *USBD_DFU_GetDeviceQualifierDesc(uint16_t *length)
   * @brief  USBD_DFU_GetUsrStringDesc
   *         Manages the transfer of memory interfaces string descriptors.
   * @param  speed : current device speed
-  * @param  index: desciptor index
+  * @param  index: descriptor index
   * @param  length : pointer data length
   * @retval pointer to the descriptor table or NULL if the descriptor is not supported.
   */
@@ -671,6 +684,11 @@ static void DFU_Detach(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
 {
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
+
   if ((hdfu->dev_state == DFU_STATE_IDLE) ||
       (hdfu->dev_state == DFU_STATE_DNLOAD_SYNC) ||
       (hdfu->dev_state == DFU_STATE_DNLOAD_IDLE) ||
@@ -714,6 +732,11 @@ static void DFU_Download(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
 {
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
+
   /* Data setup request */
   if (req->wLength > 0U)
   {
@@ -733,7 +756,7 @@ static void DFU_Download(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
     /* Unsupported state */
     else
     {
-      /* Call the error management function (command will be nacked */
+      /* Call the error management function (command will be NAKed */
       USBD_CtlError(pdev, req);
     }
   }
@@ -752,7 +775,7 @@ static void DFU_Download(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
     }
     else
     {
-      /* Call the error management function (command will be nacked */
+      /* Call the error management function (command will be NAKed */
       USBD_CtlError(pdev, req);
     }
   }
@@ -772,6 +795,11 @@ static void DFU_Upload(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
   uint8_t *phaddr;
   uint32_t addr;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
+
   /* Data setup request */
   if (req->wLength > 0U)
   {
@@ -826,7 +854,7 @@ static void DFU_Upload(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
         hdfu->dev_status[3] = 0U;
         hdfu->dev_status[4] = hdfu->dev_state;
 
-        /* Call the error management function (command will be nacked */
+        /* Call the error management function (command will be NAKed */
         USBD_CtlError(pdev, req);
       }
     }
@@ -836,7 +864,7 @@ static void DFU_Upload(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
       hdfu->wlength = 0U;
       hdfu->wblock_num = 0U;
 
-      /* Call the error management function (command will be nacked */
+      /* Call the error management function (command will be NAKed */
       USBD_CtlError(pdev, req);
     }
   }
@@ -863,6 +891,11 @@ static void DFU_GetStatus(USBD_HandleTypeDef *pdev)
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
   USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
+
   switch (hdfu->dev_state)
   {
     case DFU_STATE_DNLOAD_SYNC:
@@ -938,6 +971,11 @@ static void DFU_ClearStatus(USBD_HandleTypeDef *pdev)
 {
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
+
   if (hdfu->dev_state == DFU_STATE_ERROR)
   {
     hdfu->dev_state = DFU_STATE_IDLE;
@@ -971,6 +1009,11 @@ static void DFU_GetState(USBD_HandleTypeDef *pdev)
 {
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
+
   /* Return the current state of the DFU interface */
   (void)USBD_CtlSendData(pdev, &hdfu->dev_state, 1U);
 }
@@ -985,6 +1028,10 @@ static void DFU_Abort(USBD_HandleTypeDef *pdev)
 {
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
 
   if ((hdfu->dev_state == DFU_STATE_IDLE) ||
       (hdfu->dev_state == DFU_STATE_DNLOAD_SYNC) ||
@@ -1015,6 +1062,11 @@ static void DFU_Leave(USBD_HandleTypeDef *pdev)
 {
   USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassData;
 
+  if (hdfu == NULL)
+  {
+    return;
+  }
+
   hdfu->manif_state = DFU_MANIFEST_COMPLETE;
 
   if (((USBD_DFU_CfgDesc[(11U + (9U * USBD_DFU_MAX_ITF_NUM))]) & 0x04U) != 0U)

Class/HID/Src/usbd_hid.c

@@ -105,7 +105,8 @@ static uint8_t *USBD_HID_GetDeviceQualifierDesc(uint16_t *length);
   * @{
   */
 
-USBD_ClassTypeDef USBD_HID = {
+USBD_ClassTypeDef USBD_HID =
+{
   USBD_HID_Init,
   USBD_HID_DeInit,
   USBD_HID_Setup,
@@ -123,17 +124,21 @@ USBD_ClassTypeDef USBD_HID = {
 };
 
 /* USB HID device FS Configuration Descriptor */
-__ALIGN_BEGIN static uint8_t USBD_HID_CfgFSDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END = {
+__ALIGN_BEGIN static uint8_t USBD_HID_CfgFSDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END =
+{
   0x09,                                               /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                        /* bDescriptorType: Configuration */
-  USB_HID_CONFIG_DESC_SIZ,
+  USB_HID_CONFIG_DESC_SIZ,                            /* wTotalLength: Bytes returned */
-                                                      /* wTotalLength: Bytes returned */
   0x00,
   0x01,                                               /* bNumInterfaces: 1 interface */
   0x01,                                               /* bConfigurationValue: Configuration value */
   0x00,                                               /* iConfiguration: Index of string descriptor describing the configuration */
-  0xE0,                                               /* bmAttributes: bus powered and Support Remote Wake-up */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                               /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xE0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0xA0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                     /* MaxPower 100 mA: this current is used for detecting Vbus */
 
   /************** Descriptor of Joystick Mouse interface ****************/
   /* 09 */
@@ -171,17 +176,21 @@ __ALIGN_BEGIN static uint8_t USBD_HID_CfgFSDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN
 };
 
 /* USB HID device HS Configuration Descriptor */
-__ALIGN_BEGIN static uint8_t USBD_HID_CfgHSDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END = {
+__ALIGN_BEGIN static uint8_t USBD_HID_CfgHSDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END =
+{
   0x09,                                               /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                        /* bDescriptorType: Configuration */
-  USB_HID_CONFIG_DESC_SIZ,
+  USB_HID_CONFIG_DESC_SIZ,                            /* wTotalLength: Bytes returned */
-                                                      /* wTotalLength: Bytes returned */
   0x00,
   0x01,                                               /* bNumInterfaces: 1 interface */
   0x01,                                               /* bConfigurationValue: Configuration value */
   0x00,                                               /* iConfiguration: Index of string descriptor describing the configuration */
-  0xE0,                                               /* bmAttributes: bus powered and Support Remote Wake-up */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                               /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xE0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0xA0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                     /* MaxPower 100 mA: this current is used for detecting Vbus */
 
   /************** Descriptor of Joystick Mouse interface ****************/
   /* 09 */
@@ -219,17 +228,21 @@ __ALIGN_BEGIN static uint8_t USBD_HID_CfgHSDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN
 };
 
 /* USB HID device Other Speed Configuration Descriptor */
-__ALIGN_BEGIN static uint8_t USBD_HID_OtherSpeedCfgDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END = {
+__ALIGN_BEGIN static uint8_t USBD_HID_OtherSpeedCfgDesc[USB_HID_CONFIG_DESC_SIZ] __ALIGN_END =
+{
   0x09,                                               /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                        /* bDescriptorType: Configuration */
-  USB_HID_CONFIG_DESC_SIZ,
+  USB_HID_CONFIG_DESC_SIZ,                            /* wTotalLength: Bytes returned */
-                                                      /* wTotalLength: Bytes returned */
   0x00,
   0x01,                                               /* bNumInterfaces: 1 interface */
   0x01,                                               /* bConfigurationValue: Configuration value */
   0x00,                                               /* iConfiguration: Index of string descriptor describing the configuration */
-  0xE0,                                               /* bmAttributes: bus powered and Support Remote Wake-up */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                               /* MaxPower 100 mA: this current is used for detecting Vbus */
+  0xE0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0xA0,                                               /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                     /* MaxPower 100 mA: this current is used for detecting Vbus */
 
   /************** Descriptor of Joystick Mouse interface ****************/
   /* 09 */
@@ -268,7 +281,8 @@ __ALIGN_BEGIN static uint8_t USBD_HID_OtherSpeedCfgDesc[USB_HID_CONFIG_DESC_SIZ]
 
 
 /* USB HID device Configuration Descriptor */
-__ALIGN_BEGIN static uint8_t USBD_HID_Desc[USB_HID_DESC_SIZ] __ALIGN_END = {
+__ALIGN_BEGIN static uint8_t USBD_HID_Desc[USB_HID_DESC_SIZ] __ALIGN_END =
+{
   /* 18 */
   0x09,                                               /* bLength: HID Descriptor size */
   HID_DESCRIPTOR_TYPE,                                /* bDescriptorType: HID */
@@ -282,7 +296,8 @@ __ALIGN_BEGIN static uint8_t USBD_HID_Desc[USB_HID_DESC_SIZ] __ALIGN_END = {
 };
 
 /* USB Standard Device Descriptor */
-__ALIGN_BEGIN static uint8_t USBD_HID_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_DESC] __ALIGN_END = {
+__ALIGN_BEGIN static uint8_t USBD_HID_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_DESC] __ALIGN_END =
+{
   USB_LEN_DEV_QUALIFIER_DESC,
   USB_DESC_TYPE_DEVICE_QUALIFIER,
   0x00,
@@ -295,7 +310,8 @@ __ALIGN_BEGIN static uint8_t USBD_HID_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_
   0x00,
 };
 
-__ALIGN_BEGIN static uint8_t HID_MOUSE_ReportDesc[HID_MOUSE_REPORT_DESC_SIZE] __ALIGN_END = {
+__ALIGN_BEGIN static uint8_t HID_MOUSE_ReportDesc[HID_MOUSE_REPORT_DESC_SIZE] __ALIGN_END =
+{
   0x05,   0x01,
   0x09,   0x02,
   0xA1,   0x01,
@@ -409,7 +425,7 @@ static uint8_t USBD_HID_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
   pdev->ep_in[HID_EPIN_ADDR & 0xFU].is_used = 0U;
   pdev->ep_in[HID_EPIN_ADDR & 0xFU].bInterval = 0U;
 
-  /* FRee allocated memory */
+  /* Free allocated memory */
   if (pdev->pClassData != NULL)
   {
     (void)USBD_free(pdev->pClassData);
@@ -434,6 +450,11 @@ static uint8_t USBD_HID_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *re
   uint8_t *pbuf;
   uint16_t status_info = 0U;
 
+  if (hhid == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
     case USB_REQ_TYPE_CLASS :
@@ -550,6 +571,11 @@ uint8_t USBD_HID_SendReport(USBD_HandleTypeDef *pdev, uint8_t *report, uint16_t
 {
   USBD_HID_HandleTypeDef *hhid = (USBD_HID_HandleTypeDef *)pdev->pClassData;
 
+  if (hhid == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   if (pdev->dev_state == USBD_STATE_CONFIGURED)
   {
     if (hhid->state == HID_IDLE)

Class/MSC/Src/usbd_msc.c

@@ -123,7 +123,7 @@ USBD_ClassTypeDef  USBD_MSC =
 /*   All Descriptors (Configuration, Interface, Endpoint, Class, Vendor */
 __ALIGN_BEGIN static uint8_t USBD_MSC_CfgHSDesc[USB_MSC_CONFIG_DESC_SIZ]  __ALIGN_END =
 {
-  0x09,                                            /* bLength: Configuation Descriptor size */
+  0x09,                                            /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                     /* bDescriptorType: Configuration */
   USB_MSC_CONFIG_DESC_SIZ,
 
@@ -131,8 +131,12 @@ __ALIGN_BEGIN static uint8_t USBD_MSC_CfgHSDesc[USB_MSC_CONFIG_DESC_SIZ]  __ALIG
   0x01,                                            /* bNumInterfaces: 1 interface */
   0x01,                                            /* bConfigurationValue: */
   0x04,                                            /* iConfiguration: */
-  0xC0,                                            /* bmAttributes: */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                            /* MaxPower 100 mA */
+  0xC0,                                            /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                            /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                  /* MaxPower 100 mA */
 
   /********************  Mass Storage interface ********************/
   0x09,                                            /* bLength: Interface Descriptor size */
@@ -166,7 +170,7 @@ __ALIGN_BEGIN static uint8_t USBD_MSC_CfgHSDesc[USB_MSC_CONFIG_DESC_SIZ]  __ALIG
 /* All Descriptors (Configuration, Interface, Endpoint, Class, Vendor */
 __ALIGN_BEGIN static uint8_t USBD_MSC_CfgFSDesc[USB_MSC_CONFIG_DESC_SIZ]  __ALIGN_END =
 {
-  0x09,                                            /* bLength: Configuation Descriptor size */
+  0x09,                                            /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_CONFIGURATION,                     /* bDescriptorType: Configuration */
   USB_MSC_CONFIG_DESC_SIZ,
 
@@ -174,8 +178,12 @@ __ALIGN_BEGIN static uint8_t USBD_MSC_CfgFSDesc[USB_MSC_CONFIG_DESC_SIZ]  __ALIG
   0x01,                                            /* bNumInterfaces: 1 interface */
   0x01,                                            /* bConfigurationValue: */
   0x04,                                            /* iConfiguration: */
-  0xC0,                                            /* bmAttributes: */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                            /* MaxPower 100 mA */
+  0xC0,                                            /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                            /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                  /* MaxPower 100 mA */
 
   /********************  Mass Storage interface ********************/
   0x09,                                            /* bLength: Interface Descriptor size */
@@ -207,7 +215,7 @@ __ALIGN_BEGIN static uint8_t USBD_MSC_CfgFSDesc[USB_MSC_CONFIG_DESC_SIZ]  __ALIG
 
 __ALIGN_BEGIN static uint8_t USBD_MSC_OtherSpeedCfgDesc[USB_MSC_CONFIG_DESC_SIZ]   __ALIGN_END  =
 {
-  0x09,                                           /* bLength: Configuation Descriptor size */
+  0x09,                                           /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,
   USB_MSC_CONFIG_DESC_SIZ,
 
@@ -215,8 +223,12 @@ __ALIGN_BEGIN static uint8_t USBD_MSC_OtherSpeedCfgDesc[USB_MSC_CONFIG_DESC_SIZ]
   0x01,                                           /* bNumInterfaces: 1 interface */
   0x01,                                           /* bConfigurationValue: */
   0x04,                                           /* iConfiguration: */
-  0xC0,                                           /* bmAttributes: */
+#if (USBD_SELF_POWERED == 1U)
-  0x32,                                           /* MaxPower 100 mA */
+  0xC0,                                           /* bmAttributes: Bus Powered according to user configuration */
+#else
+  0x80,                                           /* bmAttributes: Bus Powered according to user configuration */
+#endif
+  USBD_MAX_POWER,                                 /* MaxPower 100 mA */
 
   /********************  Mass Storage interface ********************/
   0x09,                                           /* bLength: Interface Descriptor size */
@@ -320,7 +332,7 @@ uint8_t USBD_MSC_Init(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
 
 /**
   * @brief  USBD_MSC_DeInit
-  *         DeInitilaize  the mass storage configuration
+  *         DeInitialize  the mass storage configuration
   * @param  pdev: device instance
   * @param  cfgidx: configuration index
   * @retval status
@@ -337,12 +349,12 @@ uint8_t USBD_MSC_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
   (void)USBD_LL_CloseEP(pdev, MSC_EPIN_ADDR);
   pdev->ep_in[MSC_EPIN_ADDR & 0xFU].is_used = 0U;
 
-  /* De-Init the BOT layer */
-  MSC_BOT_DeInit(pdev);
-
   /* Free MSC Class Resources */
   if (pdev->pClassData != NULL)
   {
+    /* De-Init the BOT layer */
+    MSC_BOT_DeInit(pdev);
+
     (void)USBD_free(pdev->pClassData);
     pdev->pClassData = NULL;
   }
@@ -362,6 +374,11 @@ uint8_t USBD_MSC_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
   USBD_StatusTypeDef ret = USBD_OK;
   uint16_t status_info = 0U;
 
+  if (hmsc == NULL)
+  {
+    return (uint8_t)USBD_FAIL;
+  }
+
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
     /* Class request */

Class/MSC/Src/usbd_msc_bot.c

@@ -99,6 +99,11 @@ void MSC_BOT_Init(USBD_HandleTypeDef *pdev)
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   hmsc->bot_state = USBD_BOT_IDLE;
   hmsc->bot_status = USBD_BOT_STATUS_NORMAL;
 
@@ -111,7 +116,7 @@ void MSC_BOT_Init(USBD_HandleTypeDef *pdev)
   (void)USBD_LL_FlushEP(pdev, MSC_EPOUT_ADDR);
   (void)USBD_LL_FlushEP(pdev, MSC_EPIN_ADDR);
 
-  /* Prapare EP to Receive First BOT Cmd */
+  /* Prepare EP to Receive First BOT Cmd */
   (void)USBD_LL_PrepareReceive(pdev, MSC_EPOUT_ADDR, (uint8_t *)&hmsc->cbw,
                                USBD_BOT_CBW_LENGTH);
 }
@@ -126,28 +131,37 @@ void MSC_BOT_Reset(USBD_HandleTypeDef *pdev)
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   hmsc->bot_state  = USBD_BOT_IDLE;
   hmsc->bot_status = USBD_BOT_STATUS_RECOVERY;
 
   (void)USBD_LL_ClearStallEP(pdev, MSC_EPIN_ADDR);
   (void)USBD_LL_ClearStallEP(pdev, MSC_EPOUT_ADDR);
 
-  /* Prapare EP to Receive First BOT Cmd */
+  /* Prepare EP to Receive First BOT Cmd */
   (void)USBD_LL_PrepareReceive(pdev, MSC_EPOUT_ADDR, (uint8_t *)&hmsc->cbw,
                                USBD_BOT_CBW_LENGTH);
 }
 
 /**
   * @brief  MSC_BOT_DeInit
-*         Deinitialize the BOT Machine
+  *         DeInitialize the BOT Machine
   * @param  pdev: device instance
   * @retval None
   */
 void MSC_BOT_DeInit(USBD_HandleTypeDef  *pdev)
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
+
+  if (hmsc != NULL)
+  {
     hmsc->bot_state = USBD_BOT_IDLE;
   }
+}
 
 /**
   * @brief  MSC_BOT_DataIn
@@ -162,6 +176,11 @@ void MSC_BOT_DataIn(USBD_HandleTypeDef *pdev, uint8_t epnum)
 
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   switch (hmsc->bot_state)
   {
     case USBD_BOT_DATA_IN:
@@ -193,6 +212,11 @@ void MSC_BOT_DataOut(USBD_HandleTypeDef *pdev, uint8_t epnum)
 
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   switch (hmsc->bot_state)
   {
     case USBD_BOT_IDLE:
@@ -221,6 +245,11 @@ static void  MSC_BOT_CBW_Decode(USBD_HandleTypeDef *pdev)
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   hmsc->csw.dTag = hmsc->cbw.dTag;
   hmsc->csw.dDataResidue = hmsc->cbw.dDataLength;
 
@@ -286,6 +315,11 @@ static void  MSC_BOT_SendData(USBD_HandleTypeDef *pdev, uint8_t *pbuf, uint32_t
 
   uint32_t length = MIN(hmsc->cbw.dDataLength, len);
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   hmsc->csw.dDataResidue -= len;
   hmsc->csw.bStatus = USBD_CSW_CMD_PASSED;
   hmsc->bot_state = USBD_BOT_SEND_DATA;
@@ -304,6 +338,11 @@ void  MSC_BOT_SendCSW(USBD_HandleTypeDef *pdev, uint8_t CSW_Status)
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   hmsc->csw.dSignature = USBD_BOT_CSW_SIGNATURE;
   hmsc->csw.bStatus = CSW_Status;
   hmsc->bot_state = USBD_BOT_IDLE;
@@ -327,6 +366,11 @@ static void  MSC_BOT_Abort(USBD_HandleTypeDef *pdev)
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   if ((hmsc->cbw.bmFlags == 0U) &&
       (hmsc->cbw.dDataLength != 0U) &&
       (hmsc->bot_status == USBD_BOT_STATUS_NORMAL))
@@ -355,6 +399,11 @@ void  MSC_BOT_CplClrFeature(USBD_HandleTypeDef *pdev, uint8_t epnum)
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   if (hmsc->bot_status == USBD_BOT_STATUS_ERROR) /* Bad CBW Signature */
   {
     (void)USBD_LL_StallEP(pdev, MSC_EPIN_ADDR);

Class/MSC/Src/usbd_msc_scsi.c

@@ -123,6 +123,11 @@ int8_t SCSI_ProcessCmd(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *cmd)
   int8_t ret;
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   switch (cmd[0])
   {
     case SCSI_TEST_UNIT_READY:
@@ -208,6 +213,11 @@ static int8_t SCSI_TestUnitReady(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t
   UNUSED(params);
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   /* case 9 : Hi > D0 */
   if (hmsc->cbw.dDataLength != 0U)
   {
@@ -249,6 +259,11 @@ static int8_t SCSI_Inquiry(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *param
   uint16_t len;
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (hmsc->cbw.dDataLength == 0U)
   {
     SCSI_SenseCode(pdev, hmsc->cbw.bLUN, ILLEGAL_REQUEST, INVALID_CDB);
@@ -303,6 +318,11 @@ static int8_t SCSI_ReadCapacity10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t
   int8_t ret;
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   ret = ((USBD_StorageTypeDef *)pdev->pUserData)->GetCapacity(lun, &hmsc->scsi_blk_nbr, &hmsc->scsi_blk_size);
 
   if ((ret != 0) || (hmsc->scsi_medium_state == SCSI_MEDIUM_EJECTED))
@@ -342,6 +362,11 @@ static int8_t SCSI_ReadCapacity16(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t
   int8_t ret;
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   ret = ((USBD_StorageTypeDef *)pdev->pUserData)->GetCapacity(lun, &hmsc->scsi_blk_nbr, &hmsc->scsi_blk_size);
 
   if ((ret != 0) || (hmsc->scsi_medium_state == SCSI_MEDIUM_EJECTED))
@@ -395,6 +420,11 @@ static int8_t SCSI_ReadFormatCapacity(USBD_HandleTypeDef *pdev, uint8_t lun, uin
   int8_t ret;
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   ret = ((USBD_StorageTypeDef *)pdev->pUserData)->GetCapacity(lun, &blk_nbr, &blk_size);
 
   if ((ret != 0) || (hmsc->scsi_medium_state == SCSI_MEDIUM_EJECTED))
@@ -438,6 +468,11 @@ static int8_t SCSI_ModeSense6(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *pa
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
   uint16_t len = MODE_SENSE6_LEN;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (params[4] <= len)
   {
     len = params[4];
@@ -462,6 +497,11 @@ static int8_t SCSI_ModeSense10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *p
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
   uint16_t len = MODE_SENSE10_LEN;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (params[8] <= len)
   {
     len = params[8];
@@ -486,6 +526,11 @@ static int8_t SCSI_RequestSense(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *
   uint8_t i;
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (hmsc->cbw.dDataLength == 0U)
   {
     SCSI_SenseCode(pdev, hmsc->cbw.bLUN, ILLEGAL_REQUEST, INVALID_CDB);
@@ -538,6 +583,11 @@ void SCSI_SenseCode(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t sKey, uint8_t
   UNUSED(lun);
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return;
+  }
+
   hmsc->scsi_sense[hmsc->scsi_sense_tail].Skey = sKey;
   hmsc->scsi_sense[hmsc->scsi_sense_tail].w.b.ASC = ASC;
   hmsc->scsi_sense[hmsc->scsi_sense_tail].w.b.ASCQ = 0U;
@@ -562,6 +612,11 @@ static int8_t SCSI_StartStopUnit(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t
   UNUSED(lun);
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if ((hmsc->scsi_medium_state == SCSI_MEDIUM_LOCKED) && ((params[4] & 0x3U) == 2U))
   {
     SCSI_SenseCode(pdev, lun, ILLEGAL_REQUEST, INVALID_FIELED_IN_COMMAND);
@@ -603,6 +658,11 @@ static int8_t SCSI_AllowPreventRemovable(USBD_HandleTypeDef *pdev, uint8_t lun,
   UNUSED(lun);
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (params[4] == 0U)
   {
     hmsc->scsi_medium_state = SCSI_MEDIUM_UNLOCKED;
@@ -629,6 +689,11 @@ static int8_t SCSI_Read10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (hmsc->bot_state == USBD_BOT_IDLE) /* Idle */
   {
     /* case 10 : Ho <> Di */
@@ -690,6 +755,11 @@ static int8_t SCSI_Read12(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (hmsc->bot_state == USBD_BOT_IDLE) /* Idle */
   {
     /* case 10 : Ho <> Di */
@@ -754,6 +824,11 @@ static int8_t SCSI_Write10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *param
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
   uint32_t len;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (hmsc->bot_state == USBD_BOT_IDLE) /* Idle */
   {
     if (hmsc->cbw.dDataLength == 0U)
@@ -834,6 +909,11 @@ static int8_t SCSI_Write12(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *param
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
   uint32_t len;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if (hmsc->bot_state == USBD_BOT_IDLE) /* Idle */
   {
     if (hmsc->cbw.dDataLength == 0U)
@@ -917,6 +997,11 @@ static int8_t SCSI_Verify10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *para
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if ((params[1] & 0x02U) == 0x02U)
   {
     SCSI_SenseCode(pdev, lun, ILLEGAL_REQUEST, INVALID_FIELED_IN_COMMAND);
@@ -946,6 +1031,11 @@ static int8_t SCSI_CheckAddressRange(USBD_HandleTypeDef *pdev, uint8_t lun,
 {
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   if ((blk_offset + blk_nbr) > hmsc->scsi_blk_nbr)
   {
     SCSI_SenseCode(pdev, lun, ILLEGAL_REQUEST, ADDRESS_OUT_OF_RANGE);
@@ -966,6 +1056,11 @@ static int8_t SCSI_ProcessRead(USBD_HandleTypeDef *pdev, uint8_t lun)
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
   uint32_t len = hmsc->scsi_blk_len * hmsc->scsi_blk_size;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   len = MIN(len, MSC_MEDIA_PACKET);
 
   if (((USBD_StorageTypeDef *)pdev->pUserData)->Read(lun, hmsc->bot_data,
@@ -1003,6 +1098,11 @@ static int8_t SCSI_ProcessWrite(USBD_HandleTypeDef *pdev, uint8_t lun)
   USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
   uint32_t len = hmsc->scsi_blk_len * hmsc->scsi_blk_size;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   len = MIN(len, MSC_MEDIA_PACKET);
 
   if (((USBD_StorageTypeDef *)pdev->pUserData)->Write(lun, hmsc->bot_data,
@@ -1039,7 +1139,7 @@ static int8_t SCSI_ProcessWrite(USBD_HandleTypeDef *pdev, uint8_t lun)
   * @brief  SCSI_UpdateBotData
   *         fill the requested Data to transmit buffer
   * @param  hmsc handler
-* @param  params: Data buffer
+  * @param  pBuff: Data buffer
   * @param  length: Data length
   * @retval status
   */
@@ -1048,6 +1148,11 @@ static int8_t SCSI_UpdateBotData(USBD_MSC_BOT_HandleTypeDef *hmsc,
 {
   uint16_t len = length;
 
+  if (hmsc == NULL)
+  {
+    return -1;
+  }
+
   hmsc->bot_data_length = len;
 
   while (len != 0U)

Class/Template/Src/usbd_template.c

@@ -128,7 +128,7 @@ USBD_ClassTypeDef USBD_TEMPLATE_ClassDriver =
 /* USB TEMPLATE device Configuration Descriptor */
 __ALIGN_BEGIN static uint8_t USBD_TEMPLATE_CfgDesc[USB_TEMPLATE_CONFIG_DESC_SIZ] __ALIGN_END =
 {
-  0x09, /* bLength: Configuation Descriptor size */
+  0x09, /* bLength: Configuration Descriptor size */
   USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION, /* bDescriptorType: Configuration */
   USB_TEMPLATE_CONFIG_DESC_SIZ,
   /* wTotalLength: Bytes returned */
@@ -239,7 +239,6 @@ static uint8_t USBD_TEMPLATE_Setup(USBD_HandleTypeDef *pdev,
   return (uint8_t)ret;
 }
 
-
 /**
   * @brief  USBD_TEMPLATE_GetCfgDesc
   *         return configuration descriptor
@@ -264,7 +263,6 @@ uint8_t *USBD_TEMPLATE_DeviceQualifierDescriptor(uint16_t *length)
   return USBD_TEMPLATE_DeviceQualifierDesc;
 }
 
-
 /**
   * @brief  USBD_TEMPLATE_DataIn
   *         handle data IN Stage
@@ -289,6 +287,7 @@ static uint8_t USBD_TEMPLATE_EP0_RxReady(USBD_HandleTypeDef *pdev)
 
   return (uint8_t)USBD_OK;
 }
+
 /**
   * @brief  USBD_TEMPLATE_EP0_TxReady
   *         handle EP0 TRx Ready event
@@ -300,6 +299,7 @@ static uint8_t USBD_TEMPLATE_EP0_TxReady(USBD_HandleTypeDef *pdev)
 
   return (uint8_t)USBD_OK;
 }
+
 /**
   * @brief  USBD_TEMPLATE_SOF
   *         handle SOF event
@@ -311,6 +311,7 @@ static uint8_t USBD_TEMPLATE_SOF(USBD_HandleTypeDef *pdev)
 
   return (uint8_t)USBD_OK;
 }
+
 /**
   * @brief  USBD_TEMPLATE_IsoINIncomplete
   *         handle data ISO IN Incomplete event
@@ -323,6 +324,7 @@ static uint8_t USBD_TEMPLATE_IsoINIncomplete(USBD_HandleTypeDef *pdev, uint8_t e
 
   return (uint8_t)USBD_OK;
 }
+
 /**
   * @brief  USBD_TEMPLATE_IsoOutIncomplete
   *         handle data ISO OUT Incomplete event

Class/VIDEO/Inc/usbd_video.h

@@ -0,0 +1,457 @@
+/**
+  ******************************************************************************
+  * @file    usbd_video.h
+  * @author  MCD Application Team
+  * @brief   header file for the usbd_video.c file.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                      www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_VIDEO_H
+#define __USBD_VIDEO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include  "usbd_ioreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+  * @{
+  */
+
+/** @defgroup USBD_VIDEO
+  * @brief This file is the Header file for usbd_video.c
+  * @{
+  */
+
+
+/** @defgroup usbd_VIDEO_Exported_Defines
+  * @{
+  */
+
+/* USB Video device class specification version 1.10 */
+#ifdef UVC_1_0
+#define UVC_VERSION                                   0x0100U      /* UVC 1.0 */
+#else
+#define UVC_VERSION                                   0x0110U      /* UVC 1.1 */
+#endif
+
+/* bEndpointAddress in Endpoint Descriptor */
+#ifndef UVC_IN_EP
+#define UVC_IN_EP                                     0x81U
+#endif /* VIDEO_IN_EP */
+
+/* These defines shall be updated in the usbd_conf.h file */
+#ifndef UVC_WIDTH
+#define UVC_WIDTH                                     400U
+#endif /* UVC_WIDTH */
+
+#ifndef UVC_HEIGHT
+#define UVC_HEIGHT                                    240U
+#endif /* UVC_HEIGHT */
+
+#ifndef UVC_CAM_FPS_FS
+#define UVC_CAM_FPS_FS                                10U
+#endif /* UVC_CAM_FPS_FS */
+
+#ifndef UVC_CAM_FPS_HS
+#define UVC_CAM_FPS_HS                                5U
+#endif /* UVC_CAM_FPS_HS */
+
+#ifndef UVC_PACKET_SIZE
+#define UVC_PACKET_SIZE                               512U
+#endif /* UVC_PACKET_SIZE */
+
+#ifndef UVC_MAX_FRAME_SIZE
+#define UVC_MAX_FRAME_SIZE                            (UVC_WIDTH * UVC_HEIGHT * 16U / 2U)
+#endif /* UVC_MAX_FRAME_SIZE */
+
+#ifndef UVC_COLOR_PRIMARIE
+#define UVC_COLOR_PRIMARIE                            0x01U
+#endif /* UVC_COLOR_PRIMARIE */
+
+#ifndef UVC_TFR_CHARACTERISTICS
+#define UVC_TFR_CHARACTERISTICS                       0x01U
+#endif /* UVC_TFR_CHARACTERISTICS */
+
+#ifndef UVC_MATRIX_COEFFICIENTS
+#define UVC_MATRIX_COEFFICIENTS                       0x04U
+#endif /* UVC_MATRIX_COEFFICIENTS */
+
+#ifndef UVC_BITS_PER_PIXEL
+#define UVC_BITS_PER_PIXEL                            12U
+#endif /* UVC_BITS_PER_PIXEL */
+
+#define UVC_GUID_YUY2                                 0x32595559U
+#define UVC_GUID_NV12                                 0x3231564EU
+
+#ifndef UVC_UNCOMPRESSED_GUID
+#define UVC_UNCOMPRESSED_GUID                         UVC_GUID_NV12
+#endif /* UVC_UNCOMPRESSED_GUID */
+
+#define UVC_INTERVAL(n)                               (10000000U/(n))
+
+#define UVC_MIN_BIT_RATE(n)                           (UVC_WIDTH * UVC_HEIGHT * 16U * (n)) /* 16 bit */
+#define UVC_MAX_BIT_RATE(n)                           (UVC_WIDTH * UVC_HEIGHT * 16U * (n)) /* 16 bit */
+
+#define UVC_PACKETS_IN_FRAME(n)                       (UVC_MAX_FRAME_SIZE / (n))
+
+#ifndef UVC_ISO_FS_MPS
+#define UVC_ISO_FS_MPS                                256U
+#endif
+
+#ifndef UVC_ISO_HS_MPS
+#define UVC_ISO_HS_MPS                                512U
+#endif
+
+#ifndef UVC_HEADER_PACKET_CNT
+#define UVC_HEADER_PACKET_CNT                         0x01U
+#endif
+
+
+#define UVC_REQ_READ_MASK                             0x80U
+#define UVC_VC_IF_NUM                                 0x00U
+#define UVC_VS_IF_NUM                                 0x01U
+#define UVC_TOTAL_IF_NUM                              0x02U
+
+#ifdef USBD_UVC_FORMAT_UNCOMPRESSED
+#define UVC_CONFIG_DESC_SIZ                           (0x88U + 0x16U)
+#else
+#define UVC_CONFIG_DESC_SIZ                           0x88U
+#endif
+
+#define UVC_TOTAL_BUF_SIZE                            0x04U
+
+#define UVC_VC_EP_DESC_SIZE                           0x05U
+#define UVC_STREAMING_EP_DESC_SIZE                    0x07U
+#define UVC_EP_DESC_TYPE                              0x25U
+
+/* Video Interface Class Codes*/
+#define UVC_CC_VIDEO                                  0x0EU
+
+#define UVC_PLAY_STATUS_STOP                          0x00U
+#define UVC_PLAY_STATUS_READY                         0x01U
+#define UVC_PLAY_STATUS_STREAMING                     0x02U
+
+#ifndef WBVAL
+#define WBVAL(x) ((x) & 0xFFU),(((x) >> 8) & 0xFFU)
+#endif
+#ifndef DBVAL
+#define DBVAL(x) ((x)& 0xFFU),(((x) >> 8) & 0xFFU),(((x)>> 16) & 0xFFU),(((x) >> 24) & 0xFFU)
+#endif
+
+/* Video Interface Protocol Codes */
+#define PC_PROTOCOL_UNDEFINED                         0x00U
+
+#define VIDEO_VC_IF_HEADER_DESC_SIZE                  0x0DU
+#define VIDEO_IN_TERMINAL_DESC_SIZE                   0x08U
+#define VIDEO_OUT_TERMINAL_DESC_SIZE                  0x09U
+#define VIDEO_VS_IF_IN_HEADER_DESC_SIZE               0x0EU
+
+#define VS_FORMAT_UNCOMPRESSED_DESC_SIZE              0x1BU
+#define VS_FORMAT_MJPEG_DESC_SIZE                     0x0BU
+#define VS_FRAME_DESC_SIZE                            0x1EU
+#define VS_COLOR_MATCHING_DESC_SIZE                   0x06U
+
+#ifdef USBD_UVC_FORMAT_UNCOMPRESSED
+#define VS_FORMAT_DESC_SIZE                           VS_FORMAT_UNCOMPRESSED_DESC_SIZE
+#define VS_FORMAT_SUBTYPE                             VS_FORMAT_UNCOMPRESSED
+#define VS_FRAME_SUBTYPE                              VS_FRAME_UNCOMPRESSED
+
+#define VC_HEADER_SIZE (VIDEO_VS_IF_IN_HEADER_DESC_SIZE + \
+                        VS_FORMAT_UNCOMPRESSED_DESC_SIZE + \
+                        VS_FRAME_DESC_SIZE + \
+                        VS_COLOR_MATCHING_DESC_SIZE)
+#else
+#define VS_FORMAT_DESC_SIZE                           VS_FORMAT_MJPEG_DESC_SIZE
+#define VS_FORMAT_SUBTYPE                             VS_FORMAT_MJPEG
+#define VS_FRAME_SUBTYPE                              VS_FRAME_MJPEG
+
+#define VC_HEADER_SIZE (VIDEO_VS_IF_IN_HEADER_DESC_SIZE + \
+                        VS_FORMAT_DESC_SIZE + \
+                        VS_FRAME_DESC_SIZE)
+#endif
+
+/*
+ * Video Class specification release 1.1
+ * Appendix A. Video Device Class Codes defines
+ */
+
+/* Video Interface Subclass values */
+#define SC_UNDEFINED                                  0x00U
+#define SC_VIDEOCONTROL                               0x01U
+#define SC_VIDEOSTREAMING                             0x02U
+#define SC_VIDEO_INTERFACE_COLLECTION                 0x03U
+
+/* Video Class-Specific Descriptor Types */
+#define CS_UNDEFINED                                  0x20U
+#define CS_DEVICE                                     0x21U
+#define CS_CONFIGURATION                              0x22U
+#define CS_STRING                                     0x23U
+#define CS_INTERFACE                                  0x24U
+#define CS_ENDPOINT                                   0x25U
+
+/* Video Class-Specific VideoControl Interface Descriptor Subtypes */
+#define VC_DESCRIPTOR_UNDEFINED                       0x00U
+#define VC_HEADER                                     0x01U
+#define VC_INPUT_TERMINAL                             0x02U
+#define VC_OUTPUT_TERMINAL                            0x03U
+#define VC_SELECTOR_UNIT                              0x04U
+#define VC_PROCESSING_UNIT                            0x05U
+#define VC_EXTENSION_UNIT                             0x06U
+
+/* Video Class-Specific VideoStreaming Interface Descriptor Subtypes */
+#define VS_UNDEFINED                                  0x00U
+#define VS_INPUT_HEADER                               0x01U
+#define VS_OUTPUT_HEADER                              0x02U
+#define VS_STILL_IMAGE_FRAME                          0x03U
+#define VS_FORMAT_UNCOMPRESSED                        0x04U
+#define VS_FRAME_UNCOMPRESSED                         0x05U
+#define VS_FORMAT_MJPEG                               0x06U
+#define VS_FRAME_MJPEG                                0x07U
+#define VS_FORMAT_MPEG2TS                             0x0AU
+#define VS_FORMAT_DV                                  0x0CU
+#define VS_COLORFORMAT                                0x0DU
+#define VS_FORMAT_FRAME_BASED                         0x10U
+#define VS_FRAME_FRAME_BASED                          0x11U
+#define VS_FORMAT_STREAM_BASED                        0x12U
+
+/* Video Class-Specific Request values */
+#define UVC_RQ_UNDEFINED                               0x00U
+#define UVC_SET_CUR                                    0x01U
+#define UVC_GET_CUR                                    0x81U
+#define UVC_GET_MIN                                    0x82U
+#define UVC_GET_MAX                                    0x83U
+#define UVC_GET_RES                                    0x84U
+#define UVC_GET_LEN                                    0x85U
+#define UVC_GET_INFO                                   0x86U
+#define UVC_GET_DEF                                    0x87U
+
+/* VideoControl Interface Control Selectors */
+#define VC_CONTROL_UNDEFINED                           0x00U
+#define VC_VIDEO_POWER_MODE_CONTROL                    0x01U
+#define VC_REQUEST_ERROR_CODE_CONTROL                  0x02U
+
+/* Request Error Code Control */
+#define UVC_NO_ERROR_ERR                               0x00U
+#define UVC_NOT_READY_ERR                              0x01U
+#define UVC_WRONG_STATE_ERR                            0x02U
+#define UVC_POWER_ERR                                  0x03U
+#define UVC_OUT_OF_RANGE_ERR                           0x04U
+#define UVC_INVALID_UNIT_ERR                           0x05U
+#define UVC_INVALID_CONTROL_ERR                        0x06U
+#define UVC_INVALID_REQUEST_ERR                        0x07U
+#define UVC_UNKNOWN_ERR                                0xFFU
+
+/*Terminal Control Selectors*/
+#define TE_CONTROL_UNDEFINED                           0x00U
+
+/* Selector Unit Control Selectors */
+#define SU_CONTROL_UNDEFINED                           0x00U
+#define SU_INPUT_SELECT_CONTROL                        0x01U
+
+/* Camera Terminal Control Selectors */
+#define CT_CONTROL_UNDEFINED                           0x00U
+#define CT_SCANNING_MODE_CONTROL                       0x01U
+#define CT_AE_MODE_CONTROL                             0x02U
+#define CT_AE_PRIORITY_CONTROL                         0x03U
+#define CT_EXPOSURE_TIME_ABSOLUTE_CONTROL              0x04U
+#define CT_EXPOSURE_TIME_RELATIVE_CONTROL              0x05U
+#define CT_FOCUS_ABSOLUTE_CONTROL                      0x06U
+#define CT_FOCUS_RELATIVE_CONTROL                      0x07U
+#define CT_FOCUS_AUTO_CONTROL                          0x08U
+#define CT_IRIS_ABSOLUTE_CONTROL                       0x09U
+#define CT_IRIS_RELATIVE_CONTROL                       0x0AU
+#define CT_ZOOM_ABSOLUTE_CONTROL                       0x0BU
+#define CT_ZOOM_RELATIVE_CONTROL                       0x0CU
+#define CT_PANTILT_ABSOLUTE_CONTROL                    0x0DU
+#define CT_PANTILT_RELATIVE_CONTROL                    0x0EU
+#define CT_ROLL_ABSOLUTE_CONTROL                       0x0FU
+#define CT_ROLL_RELATIVE_CONTROL                       0x10U
+#define CT_PRIVACY_CONTROL                             0x11U
+
+/* Processing Unit Control Selectors */
+#define PU_CONTROL_UNDEFINED                           0x00U
+#define PU_BACKLIGHT_COMPENSATION_CONTROL              0x01U
+#define PU_BRIGHTNESS_CONTROL                          0x02U
+#define PU_CONTRAST_CONTROL                            0x03U
+#define PU_GAIN_CONTROL                                0x04U
+#define PU_POWER_LINE_FREQUENCY_CONTROL                0x05U
+#define PU_HUE_CONTROL                                 0x06U
+#define PU_SATURATION_CONTROL                          0x07U
+#define PU_SHARPNESS_CONTROL                           0x08U
+#define PU_GAMMA_CONTROL                               0x09U
+#define PU_WHITE_BALANCE_TEMPERATURE_CONTROL           0x0AU
+#define PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL      0x0BU
+#define PU_WHITE_BALANCE_COMPONENT_CONTROL             0x0CU
+#define PU_WHITE_BALANCE_COMPONENT_AUTO_CONTROL        0x0DU
+#define PU_DIGITAL_MULTIPLIER_CONTROL                  0x0EU
+#define PU_DIGITAL_MULTIPLIER_LIMIT_CONTROL            0x0FU
+#define PU_HUE_AUTO_CONTROL                            0x10U
+#define PU_ANALOG_VIDEO_STANDARD_CONTROL               0x11U
+#define PU_ANALOG_LOCK_STATUS_CONTROL                  0x12U
+
+/*Extension Unit Control Selectors */
+#define XU_CONTROL_UNDEFINED                           0x00U
+
+/* VideoStreaming Interface Control Selectors */
+#define VS_CONTROL_UNDEFINED                           0x00U
+#define VS_PROBE_CONTROL                               0x100U
+#define VS_COMMIT_CONTROL                              0x200U
+#define VS_STILL_PROBE_CONTROL                         0x03U
+#define VS_STILL_COMMIT_CONTROL                        0x04U
+#define VS_STILL_IMAGE_TRIGGER_CONTROL                 0x05U
+#define VS_STREAM_ERROR_CODE_CONTROL                   0x06U
+#define VS_GENERATE_KEY_FRAME_CONTROL                  0x07U
+#define VS_UPDATE_FRAME_SEGMENT_CONTROL                0x08U
+#define VS_SYNC_DELAY_CONTROL                          0x09U
+
+
+/* Control Capabilities */
+#define UVC_SUPPORTS_GET                               0x01U
+#define UVC_SUPPORTS_SET                               0x02U
+#define UVC_STATE_DISABLED                             0x04U
+#define UVC_AUTOUPDATE_CONTROL                         0x08U
+#define UVC_ASYNCHRONOUS_CONTROL                       0x10U
+
+/* USB Terminal Types */
+#define TT_VENDOR_SPECIFIC                             0x0100U
+#define TT_STREAMING                                   0x0101U
+
+/* Input Terminal Types */
+#define ITT_VENDOR_SPECIFIC                            0x0200U
+#define ITT_CAMERA                                     0x0201U
+#define ITT_MEDIA_TRANSPORT_INPUT                      0x0202U
+
+/*Output Terminal Types */
+#define OTT_VENDOR_SPECIFIC                            0x0300U
+#define OTT_DISPLAY                                    0x0301U
+#define OTT_MEDIA_TRANSPORT_OUTPUT                     0x0302U
+
+/* External Terminal Types */
+#define EXTERNAL_VENDOR_SPECIFIC                       0x0400U
+#define COMPOSITE_CONNECTOR                            0x0401U
+#define SVIDEO_CONNECTOR                               0x0402U
+#define COMPONENT_CONNECTOR                            0x0403U
+
+
+/* VIDEO Commands enumeration */
+typedef enum
+{
+  VIDEO_CMD_START = 1U,
+  VIDEO_CMD_PLAY,
+  VIDEO_CMD_STOP,
+} VIDEO_CMD_TypeDef;
+
+typedef enum
+{
+  VIDEO_OFFSET_NONE = 0U,
+  VIDEO_OFFSET_HALF,
+  VIDEO_OFFSET_FULL,
+  VIDEO_OFFSET_UNKNOWN,
+} VIDEO_OffsetTypeDef;
+
+typedef  struct  _VIDEO_DescHeader
+{
+  uint8_t  bLength;
+  uint8_t  bDescriptorType;
+  uint8_t  bDescriptorSubType;
+} USBD_VIDEO_DescHeader_t;
+
+typedef struct
+{
+  uint8_t  bLength;
+  uint8_t  bDescriptorType;
+  uint8_t  bDescriptorSubType;
+  uint8_t  bFrameIndex;
+  uint8_t  bmCapabilities;
+  uint16_t wWidth;
+  uint16_t wHeight;
+  uint32_t dwMinBitRate;
+  uint32_t dwMaxBitRate;
+  uint32_t dwMaxVideoFrameBufSize;
+  uint32_t dwDefaultFrameInterval;
+  uint8_t  bFrameIntervalType;
+  uint32_t dwMinFrameInterval;
+  uint32_t dwMaxFrameInterval;
+  uint32_t dwFrameIntervalStep;
+} __PACKED USBD_VIDEO_VSFrameDescTypeDef;
+
+typedef struct
+{
+  uint8_t cmd;
+  uint8_t data[USB_MAX_EP0_SIZE];
+  uint8_t len;
+  uint8_t unit;
+} USBD_VIDEO_ControlTypeDef;
+
+typedef struct
+{
+  uint32_t                   interface;
+  uint32_t                   uvc_state;
+  uint8_t                    buffer[UVC_TOTAL_BUF_SIZE];
+  VIDEO_OffsetTypeDef        offset;
+  USBD_VIDEO_ControlTypeDef  control;
+} USBD_VIDEO_HandleTypeDef;
+
+typedef struct
+{
+  int8_t (* Init)(void);
+  int8_t (* DeInit)(void);
+  int8_t (* Control)(uint8_t, uint8_t *, uint16_t);
+  int8_t (* Data)(uint8_t **, uint16_t *, uint16_t *);
+  uint8_t  *pStrDesc;
+} USBD_VIDEO_ItfTypeDef;
+
+/* UVC uses only 26 first bytes */
+typedef struct
+{
+  uint16_t    bmHint;
+  uint8_t     bFormatIndex;
+  uint8_t     bFrameIndex;
+  uint32_t    dwFrameInterval;
+  uint16_t    wKeyFrameRate;
+  uint16_t    wPFrameRate;
+  uint16_t    wCompQuality;
+  uint16_t    wCompWindowSize;
+  uint16_t    wDelay;
+  uint32_t    dwMaxVideoFrameSize;
+  uint32_t    dwMaxPayloadTransferSize;
+  uint32_t    dwClockFrequency;
+  uint8_t     bmFramingInfo;
+  uint8_t     bPreferedVersion;
+  uint8_t     bMinVersion;
+  uint8_t     bMaxVersion;
+} __PACKED USBD_VideoControlTypeDef;
+
+extern USBD_ClassTypeDef    USBD_VIDEO;
+#define USBD_VIDEO_CLASS    &USBD_VIDEO
+/**
+  * @}
+  */
+
+/** @defgroup USB_CORE_Exported_Functions
+  * @{
+  */
+
+uint8_t USBD_VIDEO_RegisterInterface(USBD_HandleTypeDef *pdev, USBD_VIDEO_ItfTypeDef *fops);
+
+/**
+  * @}
+  */
+
+
+#endif /* _USBD_VIDEO_H_ */

Class/VIDEO/Inc/usbd_video_if_template.h

@@ -0,0 +1,142 @@
+/**
+  ******************************************************************************
+  * @file    usbd_video_if_template.h
+  * @author  MCD Application Team
+  * @brief   Template Header file for the video Interface application layer functions
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                      www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_VIDEO_IF_H__
+#define __USBD_VIDEO_IF_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_video.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @brief For Usb device.
+  * @{
+  */
+
+/** @defgroup USBD_VIDEO_IF
+  * @brief Usb VIDEO interface device module.
+  * @{
+  */
+
+/** @defgroup USBD_VIDEO_IF_Exported_Defines
+  * @brief Defines.
+  * @{
+  */
+
+/* USER CODE BEGIN EXPORTED_DEFINES */
+
+/* USER CODE END EXPORTED_DEFINES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Exported_Types
+  * @brief Types.
+  * @{
+  */
+
+/* USER CODE BEGIN EXPORTED_TYPES */
+
+/* USER CODE END EXPORTED_TYPES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Exported_Macros
+  * @brief Aliases.
+  * @{
+  */
+
+/* USER CODE BEGIN EXPORTED_MACRO */
+
+/* USER CODE END EXPORTED_MACRO */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Exported_Variables
+  * @brief Public variables.
+  * @{
+  */
+
+/** VIDEO_IF Interface callback. */
+extern USBD_VIDEO_ItfTypeDef USBD_VIDEO_fops_FS;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Exported_FunctionsPrototype
+  * @brief Public functions declaration.
+  * @{
+  */
+
+/**
+  * @brief  Manages the DMA full transfer complete event.
+  * @retval None
+  */
+void TransferComplete_CallBack_FS(void);
+
+/**
+  * @brief  Manages the DMA half transfer complete event.
+  * @retval None
+  */
+void HalfTransfer_CallBack_FS(void);
+
+/* USER CODE BEGIN EXPORTED_FUNCTIONS */
+
+/* USER CODE END EXPORTED_FUNCTIONS */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBD_VIDEO_IF_H_ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+
+

Class/VIDEO/Src/usbd_video_if_template.c

@@ -0,0 +1,296 @@
+/**
+  ******************************************************************************
+  * @file    usbd_video_if_template.c
+  * @author  MCD Application Team
+  * @brief   Template file for Video Interface application layer functions
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                      www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_video_if.h"
+
+/* Include you image binary file here
+    Binary image template shall provide:
+     - tImagesList: table containing pointers to all images
+     - tImagesSizes: table containing sizes of each image respectively
+     - img_count: global image counter variable
+     - IMG_NBR: Total image number
+
+     To generate such file, it is possible to use tools converting video to MJPEG then to JPEG images.
+ */
+/* #include "img_bin.h" */
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+  * @brief Usb device library.
+  * @{
+  */
+
+/** @addtogroup USBD_VIDEO_IF
+  * @{
+  */
+
+/** @defgroup USBD_VIDEO_IF_Private_TypesDefinitions
+  * @brief Private types.
+  * @{
+  */
+
+/* USER CODE BEGIN PRIVATE_TYPES */
+
+/* USER CODE END PRIVATE_TYPES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Private_Defines
+  * @brief Private defines.
+  * @{
+  */
+
+/* USER CODE BEGIN PRIVATE_DEFINES */
+
+/* USER CODE END PRIVATE_DEFINES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Private_Macros
+  * @brief Private macros.
+  * @{
+  */
+
+/* USER CODE BEGIN PRIVATE_MACRO */
+
+/* USER CODE END PRIVATE_MACRO */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Private_Variables
+  * @brief Private variables.
+  * @{
+  */
+
+/* USER CODE BEGIN PRIVATE_VARIABLES */
+
+/* USER CODE END PRIVATE_VARIABLES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Exported_Variables
+  * @brief Public variables.
+  * @{
+  */
+
+
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+  * @}
+  */
+
+/** @defgroup USBD_VIDEO_IF_Private_FunctionPrototypes
+  * @brief Private functions declaration.
+  * @{
+  */
+
+static int8_t VIDEO_Itf_Init(void);
+static int8_t VIDEO_Itf_DeInit(void);
+static int8_t VIDEO_Itf_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length);
+static int8_t VIDEO_Itf_Data(uint8_t **pbuf, uint16_t *psize, uint16_t *pcktidx);
+
+
+/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
+
+/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
+
+/**
+  * @}
+  */
+
+USBD_VIDEO_ItfTypeDef USBD_VIDEO_fops_FS =
+{
+  VIDEO_Itf_Init,
+  VIDEO_Itf_DeInit,
+  VIDEO_Itf_Control,
+  VIDEO_Itf_Data,
+};
+
+/* Private functions ---------------------------------------------------------*/
+/**
+  * @brief  Initializes the VIDEO media low layer over USB FS IP
+  * @param  VIDEOFreq: VIDEO frequency used to play the VIDEO stream.
+  * @param  Volume: Initial volume level (from 0 (Mute) to 100 (Max))
+  * @param  options: Reserved for future use
+  * @retval USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t VIDEO_Itf_Init(void)
+{
+  /*
+     Add your initialization code here
+  */
+
+  return (0);
+}
+
+/**
+  * @brief  TEMPLATE_DeInit
+  *         DeInitializes the UVC media low layer
+  * @param  None
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t VIDEO_Itf_DeInit(void)
+{
+  /*
+     Add your deinitialization code here
+  */
+  return (0);
+}
+
+
+/**
+  * @brief  TEMPLATE_Control
+  *         Manage the UVC class requests
+  * @param  Cmd: Command code
+  * @param  Buf: Buffer containing command data (request parameters)
+  * @param  Len: Number of data to be sent (in bytes)
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t VIDEO_Itf_Control(uint8_t cmd, uint8_t *pbuf, uint16_t length)
+{
+
+  return (0);
+}
+
+/**
+  * @brief  TEMPLATE_Data
+  *         Manage the UVC data packets
+  * @param  pbuf: pointer to the buffer data to be filled
+  * @param  psize: pointer tot he current packet size to be filled
+  * @param  pcktidx: pointer to the current packet index in the current image
+  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+  */
+static int8_t VIDEO_Itf_Data(uint8_t **pbuf, uint16_t *psize, uint16_t *pcktidx)
+{
+  /*
+    Implementation of this function is mandatory to provide the video data to the USB video class
+    This function shall parse the MJPEG images and provide each time the buffer packet relative to
+    current packet index and its size.
+    If the packet is the first packet in the current MJPEG image, then packet size shall be zero and
+    the pbuf is ignored and pcktidx shall be zero.
+    Below is typical implementation of this function based on a binary image template.
+
+    Binary image template shall provide:
+     - tImagesList: table containing pointers to all images
+     - tImagesSizes: table containing sizes of each image respectively
+     - img_count: global image counter variable
+     - IMG_NBR: Total image number
+
+     To generate such file, it is possible to use tools converting video to MJPEG then to JPEG images.
+
+  */
+  const uint8_t *(*ImagePtr) = tImagesList;
+  uint32_t packet_count = (tImagesSizes[img_count]) / ((uint16_t)(UVC_PACKET_SIZE - (UVC_HEADER_PACKET_CNT * 2U)));
+  uint32_t packet_remainder = (tImagesSizes[img_count]) % ((uint16_t)(UVC_PACKET_SIZE - (UVC_HEADER_PACKET_CNT * 2U)));
+  static uint8_t packet_index = 0;
+
+  /* Check if end of current image has been reached */
+  if (packet_index < packet_count)
+  {
+    /* Set the current packet size */
+    *psize = (uint16_t)UVC_PACKET_SIZE;
+
+    /* Get the pointer to the next packet to be transmitted */
+    *pbuf = (uint8_t *)(*(ImagePtr + img_count) + packet_index * ((uint16_t)(UVC_PACKET_SIZE - (UVC_HEADER_PACKET_CNT * 2U))));
+  }
+  else if ((packet_index == packet_count))
+  {
+    if (packet_remainder != 0U)
+    {
+      /* Get the pointer to the next packet to be transmitted */
+      *pbuf = (uint8_t *)(*(ImagePtr + img_count) + packet_index * ((uint16_t)(UVC_PACKET_SIZE - (UVC_HEADER_PACKET_CNT * 2U))));
+
+      /* Set the current packet size */
+      *psize = packet_remainder + (UVC_HEADER_PACKET_CNT * 2U);
+    }
+    else
+    {
+      packet_index++;
+
+      /* New image to be started, send only the packet header */
+      *psize = 2;
+    }
+  }
+  else
+  {
+    /* New image to be started, send only the packet header */
+    *psize = 2;
+  }
+
+  /* Update the packet index */
+  *pcktidx = packet_index;
+
+  /* Increment the packet count and check if it reached the end of current image buffer */
+  if (packet_index++ >= (packet_count + 1))
+  {
+    /* Reset the packet count to zero */
+    packet_index = 0U;
+
+    /* Move to the next image in the images table */
+
+    img_count++;
+    HAL_Delay(USBD_VIDEO_IMAGE_LAPS);
+    /* Check if images count has been reached, then reset to zero (go back to first image in circular loop) */
+    if (img_count == IMG_NBR)
+    {
+      img_count = 0U;
+    }
+  }
+
+  return (0);
+}
+
+/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
+
+/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

Core/Inc/usbd_conf_template.h

@@ -71,15 +71,66 @@ extern "C" {
 /* AUDIO Class Config */
 #define USBD_AUDIO_FREQ                             22100U
 
+/* CustomHID Class Config */
+#define CUSTOM_HID_HS_BINTERVAL                     0x05U
+#define CUSTOM_HID_FS_BINTERVAL                     0x05U
+#define USBD_CUSTOMHID_OUTREPORT_BUF_SIZE           0x02U
+#define USBD_CUSTOM_HID_REPORT_DESC_SIZE            163U
+
+/* VIDEO Class Config */
+#define UVC_1_1 /* #define UVC_1_0 */
+
+/* To be used only with YUY2 and NV12 Video format, shouldn't be defined for MJPEG format */
+#define USBD_UVC_FORMAT_UNCOMPRESSED
+
+#ifdef USBD_UVC_FORMAT_UNCOMPRESSED
+#define UVC_BITS_PER_PIXEL                          12U
+#define UVC_UNCOMPRESSED_GUID                       UVC_GUID_NV12 /* UVC_GUID_YUY2 */
+
+/* refer to Table 3-18 Color Matching Descriptor video class v1.1 */
+#define UVC_COLOR_PRIMARIE                          0x01U
+#define UVC_TFR_CHARACTERISTICS                     0x01U
+#define UVC_MATRIX_COEFFICIENTS                     0x04U
+#endif
+
+/* Video Stream frame width and height */
+#define UVC_WIDTH                                   176U
+#define UVC_HEIGHT                                  144U
+
+/* bEndpointAddress in Endpoint Descriptor */
+#define UVC_IN_EP                                   0x81U
+
+#define UVC_CAM_FPS_FS                              10U
+#define UVC_CAM_FPS_HS                              5U
+
+#define UVC_ISO_FS_MPS                              512U
+#define UVC_ISO_HS_MPS                              512U
+
+#define UVC_PACKET_SIZE                             UVC_ISO_FS_MPS
+/* To be used with Device Only IP supporting double buffer mode */
+/* #define UVC_HEADER_PACKET_CNT                     0x02U */
+/* #define UVC_PACKET_SIZE                           (UVC_ISO_FS_MPS * UVC_HEADER_PACKET_CNT) */
+
+#define UVC_MAX_FRAME_SIZE                          (UVC_WIDTH * UVC_HEIGHT * 16U / 8U)
+
 /** @defgroup USBD_Exported_Macros
   * @{
   */
 
-/* Memory management macros */
+/* Memory management macros make sure to use static memory allocation */
-#define USBD_malloc               malloc
+/** Alias for memory allocation. */
-#define USBD_free                 free
+#define USBD_malloc         (void *)USBD_static_malloc
+
+/** Alias for memory release. */
+#define USBD_free           USBD_static_free
+
+/** Alias for memory set. */
 #define USBD_memset         memset
+
+/** Alias for memory copy. */
 #define USBD_memcpy         memcpy
+
+/** Alias for delay. */
 #define USBD_Delay          HAL_Delay
 
 /* DEBUG macros */
@@ -149,6 +200,9 @@ extern "C" {
 /** @defgroup USBD_CONF_Exported_FunctionsPrototype
   * @{
   */
+/* Exported functions -------------------------------------------------------*/
+void *USBD_static_malloc(uint32_t size);
+void USBD_static_free(void *p);
 /**
   * @}
   */

Core/Inc/usbd_def.h

@@ -61,6 +61,10 @@ extern "C" {
 #define USBD_SELF_POWERED                               1U
 #endif /*USBD_SELF_POWERED */
 
+#ifndef USBD_MAX_POWER
+#define USBD_MAX_POWER                                  0x32U /* 100 mA */
+#endif /* USBD_MAX_POWER */
+
 #ifndef USBD_SUPPORT_USER_STRING_DESC
 #define USBD_SUPPORT_USER_STRING_DESC                   0U
 #endif /* USBD_SUPPORT_USER_STRING_DESC */
@@ -114,6 +118,7 @@ extern "C" {
 #define  USB_DESC_TYPE_ENDPOINT                         0x05U
 #define  USB_DESC_TYPE_DEVICE_QUALIFIER                 0x06U
 #define  USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION        0x07U
+#define  USB_DESC_TYPE_IAD                              0x0BU
 #define  USB_DESC_TYPE_BOS                              0x0FU
 
 #define USB_CONFIG_REMOTE_WAKEUP                        0x02U
@@ -125,6 +130,11 @@ extern "C" {
 
 #define USB_DEVICE_CAPABITY_TYPE                        0x10U
 
+#define USB_CONF_DESC_SIZE                              0x09U
+#define USB_IF_DESC_SIZE                                0x09U
+#define USB_EP_DESC_SIZE                                0x07U
+#define USB_IAD_DESC_SIZE                               0x08U
+
 #define USB_HS_MAX_PACKET_SIZE                          512U
 #define USB_FS_MAX_PACKET_SIZE                          64U
 #define USB_MAX_EP0_SIZE                                64U
@@ -150,7 +160,6 @@ extern "C" {
 #define USBD_EP_TYPE_BULK                               0x02U
 #define USBD_EP_TYPE_INTR                               0x03U
 
-
 /**
   * @}
   */
@@ -173,8 +182,7 @@ typedef struct
 {
   uint8_t   bLength;
   uint8_t   bDescriptorType;
-  uint8_t   wDescriptorLengthLow;
+  uint16_t  wTotalLength;
-  uint8_t   wDescriptorLengthHigh;
   uint8_t   bNumInterfaces;
   uint8_t   bConfigurationValue;
   uint8_t   iConfiguration;
@@ -190,6 +198,15 @@ typedef struct
   uint8_t   bNumDeviceCaps;
 } USBD_BosDescTypedef;
 
+typedef struct
+{
+  uint8_t   bLength;
+  uint8_t   bDescriptorType;
+  uint8_t   bEndpointAddress;
+  uint8_t   bmAttributes;
+  uint16_t  wMaxPacketSize;
+  uint8_t   bInterval;
+} USBD_EpDescTypedef;
 
 struct _USBD_HandleTypeDef;
 
@@ -274,10 +291,10 @@ typedef struct _USBD_HandleTypeDef
   USBD_SpeedTypeDef       dev_speed;
   USBD_EndpointTypeDef    ep_in[16];
   USBD_EndpointTypeDef    ep_out[16];
-  uint32_t                ep0_state;
+  __IO uint32_t           ep0_state;
   uint32_t                ep0_data_len;
-  uint8_t                 dev_state;
+  __IO uint8_t            dev_state;
-  uint8_t                 dev_old_state;
+  __IO uint8_t            dev_old_state;
   uint8_t                 dev_address;
   uint8_t                 dev_connection_status;
   uint8_t                 dev_test_mode;
@@ -317,11 +334,21 @@ __STATIC_INLINE uint16_t SWAPBYTE(uint8_t *addr)
   return _SwapVal;
 }
 
+#ifndef LOBYTE
 #define LOBYTE(x)  ((uint8_t)((x) & 0x00FFU))
-#define HIBYTE(x)  ((uint8_t)(((x) & 0xFF00U) >> 8U))
+#endif
-#define MIN(a, b)  (((a) < (b)) ? (a) : (b))
-#define MAX(a, b)  (((a) > (b)) ? (a) : (b))
 
+#ifndef HIBYTE
+#define HIBYTE(x)  ((uint8_t)(((x) & 0xFF00U) >> 8U))
+#endif
+
+#ifndef MIN
+#define MIN(a, b)  (((a) < (b)) ? (a) : (b))
+#endif
+
+#ifndef MAX
+#define MAX(a, b)  (((a) > (b)) ? (a) : (b))
+#endif
 
 #if  defined ( __GNUC__ )
 #ifndef __weak

Core/Src/usbd_conf_template.c

@@ -21,6 +21,7 @@
 
 /* Includes ------------------------------------------------------------------*/
 #include "usbd_core.h"
+#include "usbd_hid.h" /* Include class header file */
 /* Private typedef -----------------------------------------------------------*/
 /* Private define ------------------------------------------------------------*/
 /* Private macro -------------------------------------------------------------*/
@@ -223,7 +224,7 @@ USBD_StatusTypeDef USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev,
   * @brief  Returns the last transferred packet size.
   * @param  pdev: Device handle
   * @param  ep_addr: Endpoint Number
-  * @retval Recived Data Size
+  * @retval Received Data Size
   */
 uint32_t USBD_LL_GetRxDataSize(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
 {
@@ -233,6 +234,27 @@ uint32_t USBD_LL_GetRxDataSize(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
   return 0U;
 }
 
+/**
+  * @brief  Static single allocation.
+  * @param  size: Size of allocated memory
+  * @retval None
+  */
+void *USBD_static_malloc(uint32_t size)
+{
+  static uint32_t mem[(sizeof(USBD_HID_HandleTypeDef) / 4) + 1]; /* On 32-bit boundary */
+  return mem;
+}
+
+/**
+  * @brief  Dummy memory free
+  * @param  p: Pointer to allocated  memory address
+  * @retval None
+  */
+void USBD_static_free(void *p)
+{
+
+}
+
 /**
   * @brief  Delays routine for the USB Device Library.
   * @param  Delay: Delay in ms

Core/Src/usbd_core.c

@@ -123,7 +123,7 @@ USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev,
 
 /**
   * @brief  USBD_DeInit
-*         Re-Initialize th device library
+  *         Re-Initialize the device library
   * @param  pdev: device instance
   * @retval status: status
   */
@@ -280,7 +280,7 @@ USBD_StatusTypeDef USBD_ClrClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
 
 
 /**
-* @brief  USBD_SetupStage
+  * @brief  USBD_LL_SetupStage
   *         Handle the setup stage
   * @param  pdev: device instance
   * @retval status
@@ -318,10 +318,11 @@ USBD_StatusTypeDef USBD_LL_SetupStage(USBD_HandleTypeDef *pdev, uint8_t *psetup)
 }
 
 /**
-* @brief  USBD_DataOutStage
+  * @brief  USBD_LL_DataOutStage
   *         Handle data OUT stage
   * @param  pdev: device instance
   * @param  epnum: endpoint index
+  * @param  pdata: data pointer
   * @retval status
   */
 USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev,
@@ -344,11 +345,14 @@ USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev,
       }
       else
       {
-        if ((pdev->pClass->EP0_RxReady != NULL) &&
+        if (pdev->dev_state == USBD_STATE_CONFIGURED)
-            (pdev->dev_state == USBD_STATE_CONFIGURED))
+        {
+          if (pdev->pClass->EP0_RxReady != NULL)
           {
             pdev->pClass->EP0_RxReady(pdev);
           }
+        }
+
         (void)USBD_CtlSendStatus(pdev);
       }
     }
@@ -366,8 +370,11 @@ USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev,
 #endif
     }
   }
-  else if ((pdev->pClass->DataOut != NULL) &&
+  else
-           (pdev->dev_state == USBD_STATE_CONFIGURED))
+  {
+    if (pdev->dev_state == USBD_STATE_CONFIGURED)
+    {
+      if (pdev->pClass->DataOut != NULL)
       {
         ret = (USBD_StatusTypeDef)pdev->pClass->DataOut(pdev, epnum);
 
@@ -376,17 +383,14 @@ USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev,
           return ret;
         }
       }
-  else
+    }
-  {
-    /* should never be in this condition */
-    return USBD_FAIL;
   }
 
   return USBD_OK;
 }
 
 /**
-* @brief  USBD_DataInStage
+  * @brief  USBD_LL_DataInStage
   *         Handle data in stage
   * @param  pdev: device instance
   * @param  epnum: endpoint index
@@ -428,11 +432,13 @@ USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev,
         }
         else
         {
-          if ((pdev->pClass->EP0_TxSent != NULL) &&
+          if (pdev->dev_state == USBD_STATE_CONFIGURED)
-              (pdev->dev_state == USBD_STATE_CONFIGURED))
+          {
+            if (pdev->pClass->EP0_TxSent != NULL)
             {
               pdev->pClass->EP0_TxSent(pdev);
             }
+          }
           (void)USBD_LL_StallEP(pdev, 0x80U);
           (void)USBD_CtlReceiveStatus(pdev);
         }
@@ -455,8 +461,11 @@ USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev,
       pdev->dev_test_mode = 0U;
     }
   }
-  else if ((pdev->pClass->DataIn != NULL) &&
+  else
-           (pdev->dev_state == USBD_STATE_CONFIGURED))
+  {
+    if (pdev->dev_state == USBD_STATE_CONFIGURED)
+    {
+      if (pdev->pClass->DataIn != NULL)
       {
         ret = (USBD_StatusTypeDef)pdev->pClass->DataIn(pdev, epnum);
 
@@ -465,10 +474,7 @@ USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev,
           return ret;
         }
       }
-  else
+    }
-  {
-    /* should never be in this condition */
-    return USBD_FAIL;
   }
 
   return USBD_OK;
@@ -489,9 +495,17 @@ USBD_StatusTypeDef USBD_LL_Reset(USBD_HandleTypeDef *pdev)
   pdev->dev_config = 0U;
   pdev->dev_remote_wakeup = 0U;
 
+  if (pdev->pClass == NULL)
+  {
+    return USBD_FAIL;
+  }
+
   if (pdev->pClassData != NULL)
   {
-    pdev->pClass->DeInit(pdev, (uint8_t)pdev->dev_config);
+    if (pdev->pClass->DeInit != NULL)
+    {
+      (void)pdev->pClass->DeInit(pdev, (uint8_t)pdev->dev_config);
+    }
   }
 
   /* Open EP0 OUT */
@@ -510,7 +524,7 @@ USBD_StatusTypeDef USBD_LL_Reset(USBD_HandleTypeDef *pdev)
 }
 
 /**
-* @brief  USBD_LL_Reset
+  * @brief  USBD_LL_SetSpeed
   *         Handle Reset event
   * @param  pdev: device instance
   * @retval status
@@ -524,7 +538,7 @@ USBD_StatusTypeDef USBD_LL_SetSpeed(USBD_HandleTypeDef *pdev,
 }
 
 /**
-* @brief  USBD_Suspend
+  * @brief  USBD_LL_Suspend
   *         Handle Suspend event
   * @param  pdev: device instance
   * @retval status
@@ -539,7 +553,7 @@ USBD_StatusTypeDef USBD_LL_Suspend(USBD_HandleTypeDef *pdev)
 }
 
 /**
-* @brief  USBD_Resume
+  * @brief  USBD_LL_Resume
   *         Handle Resume event
   * @param  pdev: device instance
   * @retval status
@@ -556,7 +570,7 @@ USBD_StatusTypeDef USBD_LL_Resume(USBD_HandleTypeDef *pdev)
 }
 
 /**
-* @brief  USBD_SOF
+  * @brief  USBD_LL_SOF
   *         Handle SOF event
   * @param  pdev: device instance
   * @retval status
@@ -564,11 +578,16 @@ USBD_StatusTypeDef USBD_LL_Resume(USBD_HandleTypeDef *pdev)
 
 USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef *pdev)
 {
+  if (pdev->pClass == NULL)
+  {
+    return USBD_FAIL;
+  }
+
   if (pdev->dev_state == USBD_STATE_CONFIGURED)
   {
     if (pdev->pClass->SOF != NULL)
     {
-      pdev->pClass->SOF(pdev);
+      (void)pdev->pClass->SOF(pdev);
     }
   }
 
@@ -576,7 +595,7 @@ USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef *pdev)
 }
 
 /**
-* @brief  USBD_IsoINIncomplete
+  * @brief  USBD_LL_IsoINIncomplete
   *         Handle iso in incomplete event
   * @param  pdev: device instance
   * @retval status
@@ -584,15 +603,24 @@ USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef *pdev)
 USBD_StatusTypeDef USBD_LL_IsoINIncomplete(USBD_HandleTypeDef *pdev,
                                            uint8_t epnum)
 {
-  /* Prevent unused arguments compilation warning */
+  if (pdev->pClass == NULL)
-  UNUSED(pdev);
+  {
-  UNUSED(epnum);
+    return USBD_FAIL;
+  }
+
+  if (pdev->dev_state == USBD_STATE_CONFIGURED)
+  {
+    if (pdev->pClass->IsoINIncomplete != NULL)
+    {
+      (void)pdev->pClass->IsoINIncomplete(pdev, epnum);
+    }
+  }
 
   return USBD_OK;
 }
 
 /**
-* @brief  USBD_IsoOUTIncomplete
+  * @brief  USBD_LL_IsoOUTIncomplete
   *         Handle iso out incomplete event
   * @param  pdev: device instance
   * @retval status
@@ -600,15 +628,24 @@ USBD_StatusTypeDef USBD_LL_IsoINIncomplete(USBD_HandleTypeDef *pdev,
 USBD_StatusTypeDef USBD_LL_IsoOUTIncomplete(USBD_HandleTypeDef *pdev,
                                             uint8_t epnum)
 {
-  /* Prevent unused arguments compilation warning */
+  if (pdev->pClass == NULL)
-  UNUSED(pdev);
+  {
-  UNUSED(epnum);
+    return USBD_FAIL;
+  }
+
+  if (pdev->dev_state == USBD_STATE_CONFIGURED)
+  {
+    if (pdev->pClass->IsoOUTIncomplete != NULL)
+    {
+      (void)pdev->pClass->IsoOUTIncomplete(pdev, epnum);
+    }
+  }
 
   return USBD_OK;
 }
 
 /**
-* @brief  USBD_DevConnected
+  * @brief  USBD_LL_DevConnected
   *         Handle device connection event
   * @param  pdev: device instance
   * @retval status
@@ -622,7 +659,7 @@ USBD_StatusTypeDef USBD_LL_DevConnected(USBD_HandleTypeDef *pdev)
 }
 
 /**
-* @brief  USBD_DevDisconnected
+  * @brief  USBD_LL_DevDisconnected
   *         Handle device disconnection event
   * @param  pdev: device instance
   * @retval status
@@ -634,7 +671,7 @@ USBD_StatusTypeDef USBD_LL_DevDisconnected(USBD_HandleTypeDef *pdev)
 
   if (pdev->pClass != NULL)
   {
-    pdev->pClass->DeInit(pdev, (uint8_t)pdev->dev_config);
+    (void)pdev->pClass->DeInit(pdev, (uint8_t)pdev->dev_config);
   }
 
   return USBD_OK;

Core/Src/usbd_ctlreq.c

@@ -501,7 +501,9 @@ static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *r
             USBD_CtlError(pdev, req);
             err++;
           }
-#elif (USBD_CLASS_USER_STRING_DESC == 1U)
+#endif
+
+#if (USBD_CLASS_USER_STRING_DESC == 1U)
           if (pdev->pDesc->GetUserStrDescriptor != NULL)
           {
             pbuf = pdev->pDesc->GetUserStrDescriptor(pdev->dev_speed, (req->wValue), &len);
@@ -511,7 +513,9 @@ static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *r
             USBD_CtlError(pdev, req);
             err++;
           }
-#else
+#endif
+
+#if ((USBD_CLASS_USER_STRING_DESC == 0U) && (USBD_SUPPORT_USER_STRING_DESC == 0U))
           USBD_CtlError(pdev, req);
           err++;
 #endif
@@ -554,8 +558,7 @@ static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *r
   {
     return;
   }
-  else
+
-  {
   if (req->wLength != 0U)
   {
     if (len != 0U)
@@ -573,7 +576,7 @@ static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *r
     (void)USBD_CtlSendStatus(pdev);
   }
 }
-}
+
 
 /**
   * @brief  USBD_SetAddress
@@ -825,6 +828,7 @@ static void USBD_ClrFeature(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
   }
 }
 
+
 /**
   * @brief  USBD_ParseSetupRequest
   *         Copy buffer into setup structure
@@ -832,7 +836,6 @@ static void USBD_ClrFeature(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
   * @param  req: usb request
   * @retval None
   */
-
 void USBD_ParseSetupRequest(USBD_SetupReqTypedef *req, uint8_t *pdata)
 {
   uint8_t *pbuff = pdata;
@@ -854,6 +857,7 @@ void USBD_ParseSetupRequest(USBD_SetupReqTypedef *req, uint8_t *pdata)
   req->wLength = SWAPBYTE(pbuff);
 }
 
+
 /**
   * @brief  USBD_CtlError
   *         Handle USB low level Error
@@ -861,7 +865,6 @@ void USBD_ParseSetupRequest(USBD_SetupReqTypedef *req, uint8_t *pdata)
   * @param  req: usb request
   * @retval None
   */
-
 void USBD_CtlError(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req)
 {
   UNUSED(req);
@@ -908,6 +911,7 @@ void USBD_GetString(uint8_t *desc, uint8_t *unicode, uint16_t *len)
   }
 }
 
+
 /**
   * @brief  USBD_GetLen
   *         return the string length

Core/Src/usbd_ioreq.c

@@ -90,7 +90,12 @@ USBD_StatusTypeDef USBD_CtlSendData(USBD_HandleTypeDef *pdev,
   /* Set EP0 State */
   pdev->ep0_state = USBD_EP0_DATA_IN;
   pdev->ep_in[0].total_length = len;
+
+#ifdef USBD_AVOID_PACKET_SPLIT_MPS
+  pdev->ep_in[0].rem_length = 0U;
+#else
   pdev->ep_in[0].rem_length = len;
+#endif
 
   /* Start the transfer */
   (void)USBD_LL_Transmit(pdev, 0x00U, pbuf, len);
@@ -129,7 +134,12 @@ USBD_StatusTypeDef USBD_CtlPrepareRx(USBD_HandleTypeDef *pdev,
   /* Set EP0 State */
   pdev->ep0_state = USBD_EP0_DATA_OUT;
   pdev->ep_out[0].total_length = len;
+
+#ifdef USBD_AVOID_PACKET_SPLIT_MPS
+  pdev->ep_out[0].rem_length = 0U;
+#else
   pdev->ep_out[0].rem_length = len;
+#endif
 
   /* Start the transfer */
   (void)USBD_LL_PrepareReceive(pdev, 0U, pbuf, len);

Release_Notes.html

@@ -15,6 +15,7 @@
 
 
 
+
 <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
 <link rel="File-List" href="Release_Notes_for_STM32F2xx_StdPeriph_Driver_files/filelist.xml">
 <link rel="Edit-Time-Data" href="Release_Notes_for_STM32F2xx_StdPeriph_Driver_files/editdata.mso"><!--[if !mso]>
@@ -923,7 +924,49 @@ ul
    <tbody><tr>
     <td style="padding: 0in;" valign="top">
     <h2 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;"><a name="History"></a><span style="font-size: 12pt; color: white;">Update History</span></h2>
-            <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.6.1 / 05-June-2020</span></h3>
+            
+            <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.7.1 / 18-August-2020</span></h3>
+            <b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
+Changes<br>
+</span></u></b>
+            <ul style="margin-top: 0cm;" type="square">
+<li>USB All Class:</li>
+              <ul>
+                <li>Add NULL pointer access check to Class handler<br>
+                </li>
+              </ul>
+            </ul>
+
+            <h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.7.0 / 12-August-2020</span></h3>
+<p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt;"><b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
+Changes</span></u></b></p><ul style="margin-top: 0cm;" type="square"><li>Integration of&nbsp; new USB device Class driver:</li><ul><li>USB video Class driver based on USB-IF video class definition version 1.1</li></ul></ul>
+
+
+
+
+
+
+
+
+
+
+
+
+            
+            
+            
+            
+            
+            
+            
+            
+            
+            
+            
+            <ul style="margin-top: 0cm;" type="square"><li>USB Core:</li><ul><li>Enhance NULL pointer check in Core APIs</li><li>Allow supporting both USER and USER Class string desc</li><li>Add support of USB controller which handles packet-size splitting by hardware</li><li>Avoid compilation warning due macro redefinition</li><li>change
+added to USBD_HandleTypeDef structure: dev_state, old_dev_state and
+ep0_state declaration become volatile to disable compiler optimization</li><li>Word spelling correction and file indentation improved</li><li>usbd_conf.h/c Template file updated to suggest using by default a static memory allocation for Class handler</li></ul></ul><ul style="margin-top: 0cm;" type="square"><li>USB All Classes</li><ul><li>Word spelling correction and file indentation improved</li><li>Allow updating device config descriptor Max power from user code usbd_conf.h using USBD_MAX_POWER define</li><li>Fix device config descriptor bmAttributes value which depends on user code define USBD_SELF_POWERED</li></ul></ul><ul style="margin-top: 0cm;" type="square"><li>USB CDC Class:</li><ul><li>Class specific request, add protection to limit the maximum data length to be sent by the CDC device</li></ul></ul><ul style="margin-top: 0cm;" type="square"><li>USB CustomHID Class:</li><ul><li>Allow changing CustomHID data EP size from user code </li></ul></ul>
+            <br><h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.6.1 / 05-June-2020</span></h3>
 
 
             
@@ -996,7 +1039,7 @@ Changes</span></u></b><u><span style="font-size: 10pt; font-family: Verdana; col
             
             
             
-            <ul style="margin-top: 0cm;" type="square"><li>Integration of three new USB device Class drivers:</li><ul><li>USB CDC ECM Class driver</li><li>USB CDC RNDIS Microsoft Class driver</li><li>USB Billboard Class driver</li></ul><li>Fix mondatory misra-c 2012 violations</li><li>update user core and class template files</li><li>USB Core:</li><ul><li>Fix unexpected EP0 stall during enumeration phase&nbsp;</li><li>Improve APIs error&nbsp;management and prevent accessing NULL pointers</li></ul><li>USB MSC Class:</li><ul><li>Fix USBCV specific class tests</li><li>Fix multiple error with SCSI commands handling</li><li>Protect medium access when host ask for medium ejection</li></ul><li>USB CDC Class:</li><ul><li>Add new function to inform user that current IN transfer is completed</li><li>update transmit and receive APIs to transfer up to 64KB</li></ul></ul><ul style="margin-top: 0cm;" type="square"><li>USB AUDIO Class:</li><ul><li>Fix audio sync start buffer size</li><li>update user callback periodicTC args by adding pointer to user buffer and size</li></ul><li>USB CustomHID Class:</li><ul><li>Rework the OUT transfer complete and prevent automatically re-enabling the OUT EP&nbsp;</li><li>Add new user API to restart the OUT transfer: USBD_CUSTOM_HID_ReceivePacket()</li></ul></ul><h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.5.3 / 30-April-2019</span></h3><p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt;"><b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
+            <ul style="margin-top: 0cm;" type="square"><li>Integration of three new USB device Class drivers:</li><ul><li>USB CDC ECM Class driver</li><li>USB CDC RNDIS Microsoft Class driver</li><li>USB Billboard Class driver</li></ul><li>Fix mandatory misra-c 2012 violations</li><li>update user core and class template files</li><li>USB Core:</li><ul><li>Fix unexpected EP0 stall during enumeration phase&nbsp;</li><li>Improve APIs error&nbsp;management and prevent accessing NULL pointers</li></ul><li>USB MSC Class:</li><ul><li>Fix USBCV specific class tests</li><li>Fix multiple error with SCSI commands handling</li><li>Protect medium access when host ask for medium ejection</li></ul><li>USB CDC Class:</li><ul><li>Add new function to inform user that current IN transfer is completed</li><li>update transmit and receive APIs to transfer up to 64KB</li></ul></ul><ul style="margin-top: 0cm;" type="square"><li>USB AUDIO Class:</li><ul><li>Fix audio sync start buffer size</li><li>update user callback periodicTC args by adding pointer to user buffer and size</li></ul><li>USB CustomHID Class:</li><ul><li>Rework the OUT transfer complete and prevent automatically re-enabling the OUT EP&nbsp;</li><li>Add new user API to restart the OUT transfer: USBD_CUSTOM_HID_ReceivePacket()</li></ul></ul><h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.5.3 / 30-April-2019</span></h3><p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt;"><b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
 Changes</span></u></b><u><span style="font-size: 10pt; font-family: Verdana; color: black;"><o:p></o:p></span></u></p>
 
 
@@ -1019,7 +1062,7 @@ Changes</span></u></b><u><span style="font-size: 10pt; font-family: Verdana; col
             
             
             
-            <ul style="margin-top: 0cm;" type="square"><li>Fix misra-c 2012 high severity violations</li><li>Core driver:</li><ul><li>protect shared macros __ALIGN_BEGIN, __ALIGN_END with C directive #ifndef</li><li>update Core driver and DFU Class driver to use&nbsp;USBD_SUPPORT_USER_STRING_DESC insead of &nbsp;USBD_SUPPORT_USER_STRING</li><li>&nbsp;prevent accessing to NULL pointer if the get descriptor functions are not defined</li><li>Update on USBD_LL_Resume(),&nbsp; restore the device state only if the current state is USBD_STATE_SUSPENDED </li></ul></ul><h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.5.2 / 27-Mars-2019</span></h3><p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt;"><b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
+            <ul style="margin-top: 0cm;" type="square"><li>Fix misra-c 2012 high severity violations</li><li>Core driver:</li><ul><li>protect shared macros __ALIGN_BEGIN, __ALIGN_END with C directive #ifndef</li><li>update Core driver and DFU Class driver to use&nbsp;USBD_SUPPORT_USER_STRING_DESC instead of &nbsp;USBD_SUPPORT_USER_STRING</li><li>&nbsp;prevent accessing to NULL pointer if the get descriptor functions are not defined</li><li>Update on USBD_LL_Resume(),&nbsp; restore the device state only if the current state is USBD_STATE_SUSPENDED </li></ul></ul><h3 style="background: rgb(51, 102, 255) none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; margin-right: 500pt; width: 180px;"><span style="font-size: 10pt; font-family: Arial; color: white;">V2.5.2 / 27-Mars-2019</span></h3><p class="MsoNormal" style="margin: 4.5pt 0cm 4.5pt 18pt;"><b style=""><u><span style="font-size: 10pt; font-family: Verdana; color: black;">Main
 Changes</span></u></b><u><span style="font-size: 10pt; font-family: Verdana; color: black;"><o:p></o:p></span></u></p>