STM32_USB_Device_Library
Select one of the symbols to view example projects that use it.
 
Outline
Includes
#include "usbd_dfu.h"
#include "usbd_ctlreq.h"
USBD_DFU
USBD_DFU_CfgDesc
USBD_DFU_DeviceQualifierDesc
USBD_DFU_Init(USBD_HandleTypeDef *, uint8_t)
USBD_DFU_DeInit(USBD_HandleTypeDef *, uint8_t)
USBD_DFU_Setup(USBD_HandleTypeDef *, USBD_SetupReqTypedef *)
USBD_DFU_GetCfgDesc(uint16_t *)
USBD_DFU_EP0_RxReady(USBD_HandleTypeDef *)
USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *)
USBD_DFU_SOF(USBD_HandleTypeDef *)
USBD_DFU_GetDeviceQualifierDesc(uint16_t *)
USBD_DFU_GetUsrStringDesc(USBD_HandleTypeDef *, uint8_t, uint16_t *)
USBD_DFU_RegisterMedia(USBD_HandleTypeDef *, USBD_DFU_MediaTypeDef *)
DFU_Detach(USBD_HandleTypeDef *, USBD_SetupReqTypedef *)
DFU_Download(USBD_HandleTypeDef *, USBD_SetupReqTypedef *)
DFU_Upload(USBD_HandleTypeDef *, USBD_SetupReqTypedef *)
DFU_GetStatus(USBD_HandleTypeDef *)
DFU_ClearStatus(USBD_HandleTypeDef *)
DFU_GetState(USBD_HandleTypeDef *)
DFU_Abort(USBD_HandleTypeDef *)
DFU_Leave(USBD_HandleTypeDef *)
USBD_DFU_GetDfuFuncDesc(uint8_t *)
Files
loading...
CodeScopeSTM32 Libraries and SamplesSTM32_USB_Device_LibraryClass/DFU/Src/usbd_dfu.c
 
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/** ****************************************************************************** * @file usbd_dfu.c * @author MCD Application Team * @brief This file provides the DFU core functions. * ****************************************************************************** * @attention * * Copyright (c) 2015 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** * @verbatim * * =================================================================== * DFU Class Driver Description * =================================================================== * This driver manages the DFU class V1.1 following the "Device Class Specification for * Device Firmware Upgrade Version 1.1 Aug 5, 2004". * This driver implements the following aspects of the specification: * - Device descriptor management * - Configuration descriptor management * - Enumeration as DFU device (in DFU mode only) * - Requests management (supporting ST DFU sub-protocol) * - Memory operations management (Download/Upload/Erase/Detach/GetState/GetStatus) * - DFU state machine implementation. * * @note * ST DFU sub-protocol is compliant with DFU protocol and use sub-requests to manage * memory addressing, commands processing, specific memories operations (ie. Erase) ... * As required by the DFU specification, only endpoint 0 is used in this application. * Other endpoints and functions may be added to the application (ie. DFU ...) * * These aspects may be enriched or modified for a specific user application. * * This driver doesn't implement the following aspects of the specification * (but it is possible to manage these features with some modifications on this driver): * - Manifestation Tolerant mode * * @endverbatim * ****************************************************************************** *//* ... */ /* BSPDependencies - "stm32xxxxx_{eval}{discovery}{nucleo_144}.c" - "stm32xxxxx_{eval}{discovery}_io.c" EndBSPDependencies *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "usbd_dfu.h" #include "usbd_ctlreq.h" /** @addtogroup STM32_USB_DEVICE_LIBRARY * @{ *//* ... */ /** @defgroup USBD_DFU * @brief usbd core module * @{ *//* ... */ /** @defgroup USBD_DFU_Private_TypesDefinitions * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBD_DFU_Private_Defines * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBD_DFU_Private_Macros * @{ *//* ... */ /** * @} *//* ... */ /** @defgroup USBD_DFU_Private_FunctionPrototypes * @{ *//* ... */ static uint8_t USBD_DFU_Init(USBD_HandleTypeDef *pdev, uint8_t cfgidx); static uint8_t USBD_DFU_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx); static uint8_t USBD_DFU_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req); static uint8_t USBD_DFU_EP0_RxReady(USBD_HandleTypeDef *pdev); static uint8_t USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev); static uint8_t USBD_DFU_SOF(USBD_HandleTypeDef *pdev); #ifndef USE_USBD_COMPOSITE static uint8_t *USBD_DFU_GetCfgDesc(uint16_t *length); static uint8_t *USBD_DFU_GetDeviceQualifierDesc(uint16_t *length);/* ... */ #endif /* USE_USBD_COMPOSITE */ #if (USBD_SUPPORT_USER_STRING_DESC == 1U) static uint8_t *USBD_DFU_GetUsrStringDesc(USBD_HandleTypeDef *pdev, uint8_t index, uint16_t *length);/* ... */ #endif /* USBD_SUPPORT_USER_STRING_DESC */ static void DFU_Detach(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req); static void DFU_Download(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req); static void DFU_Upload(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req); static void DFU_GetStatus(USBD_HandleTypeDef *pdev); static void DFU_ClearStatus(USBD_HandleTypeDef *pdev); static void DFU_GetState(USBD_HandleTypeDef *pdev); static void DFU_Abort(USBD_HandleTypeDef *pdev); static void DFU_Leave(USBD_HandleTypeDef *pdev); static void *USBD_DFU_GetDfuFuncDesc(uint8_t *pConfDesc); /** * @} *//* ... */ /** @defgroup USBD_DFU_Private_Variables * @{ *//* ... */ USBD_ClassTypeDef USBD_DFU = { USBD_DFU_Init, USBD_DFU_DeInit, USBD_DFU_Setup, USBD_DFU_EP0_TxReady, USBD_DFU_EP0_RxReady, NULL, NULL, USBD_DFU_SOF, NULL, NULL, #ifdef USE_USBD_COMPOSITE NULL, NULL, NULL, NULL,/* ... */ #else USBD_DFU_GetCfgDesc, USBD_DFU_GetCfgDesc, USBD_DFU_GetCfgDesc, USBD_DFU_GetDeviceQualifierDesc,/* ... */ #endif /* USE_USBD_COMPOSITE */ #if (USBD_SUPPORT_USER_STRING_DESC == 1U) USBD_DFU_GetUsrStringDesc #endif /* USBD_SUPPORT_USER_STRING_DESC */ ...}; #ifndef USE_USBD_COMPOSITE /* USB DFU device Configuration Descriptor */ __ALIGN_BEGIN static uint8_t USBD_DFU_CfgDesc[USB_DFU_CONFIG_DESC_SIZ] __ALIGN_END = { 0x09, /* bLength: Configuration Descriptor size */ USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */ USB_DFU_CONFIG_DESC_SIZ, /* wTotalLength: Bytes returned */ 0x00, 0x01, /* bNumInterfaces: 1 interface */ 0x01, /* bConfigurationValue: Configuration value */ 0x02, /* iConfiguration: Index of string descriptor describing the configuration *//* ... */ #if (USBD_SELF_POWERED == 1U) 0xC0, /* bmAttributes: Bus Powered according to user configuration */ #else 0x80, /* bmAttributes: Bus Powered according to user configuration */ #endif /* USBD_SELF_POWERED */ USBD_MAX_POWER, /* MaxPower (mA) */ /* 09 */ /********** Descriptor of DFU interface 0 Alternate setting 0 **************/ USBD_DFU_IF_DESC(0U), /* This interface is mandatory for all devices */ #if (USBD_DFU_MAX_ITF_NUM > 1U) Descriptor of DFU interface 0 Alternate setting 0 /********** Descriptor of DFU interface 0 Alternate setting 1 **************/ USBD_DFU_IF_DESC(1),/* ... */ #endif /* (USBD_DFU_MAX_ITF_NUM > 1) */ #if (USBD_DFU_MAX_ITF_NUM > 2U) Descriptor of DFU interface 0 Alternate setting 1 /********** Descriptor of DFU interface 0 Alternate setting 2 **************/ USBD_DFU_IF_DESC(2),/* ... */ #endif /* (USBD_DFU_MAX_ITF_NUM > 2) */ #if (USBD_DFU_MAX_ITF_NUM > 3U) Descriptor of DFU interface 0 Alternate setting 2 /********** Descriptor of DFU interface 0 Alternate setting 3 **************/ USBD_DFU_IF_DESC(3),/* ... */ #endif /* (USBD_DFU_MAX_ITF_NUM > 3) */ #if (USBD_DFU_MAX_ITF_NUM > 4U) Descriptor of DFU interface 0 Alternate setting 3 /********** Descriptor of DFU interface 0 Alternate setting 4 **************/ USBD_DFU_IF_DESC(4),/* ... */ #endif /* (USBD_DFU_MAX_ITF_NUM > 4) */ #if (USBD_DFU_MAX_ITF_NUM > 5U) Descriptor of DFU interface 0 Alternate setting 4 /********** Descriptor of DFU interface 0 Alternate setting 5 **************/ USBD_DFU_IF_DESC(5),/* ... */ #endif /* (USBD_DFU_MAX_ITF_NUM > 5) */ #if (USBD_DFU_MAX_ITF_NUM > 6U) #error "ERROR: usbd_dfu_core.c: Modify the file to support more descriptors!" #endif /* (USBD_DFU_MAX_ITF_NUM > 6) */ Descriptor of DFU interface 0 Alternate setting 5 /******************** DFU Functional Descriptor********************/ 0x09, /* blength = 9 Bytes */ DFU_DESCRIPTOR_TYPE, /* DFU Functional Descriptor */ 0x0B, /* bmAttribute: bitCanDnload = 1 (bit 0) bitCanUpload = 1 (bit 1) bitManifestationTolerant = 0 (bit 2) bitWillDetach = 1 (bit 3) Reserved (bit4-6) bitAcceleratedST = 0 (bit 7) *//* ... */ 0xFF, /* DetachTimeOut= 255 ms*/ 0x00, /* WARNING: In DMA mode the multiple MPS packets feature is still not supported ==> In this case, when using DMA USBD_DFU_XFER_SIZE should be set to 64 in usbd_conf.h *//* ... */ TRANSFER_SIZE_BYTES(USBD_DFU_XFER_SIZE), /* TransferSize = 1024 Byte */ 0x1A, /* bcdDFUVersion */ 0x01 DFU Functional Descriptor /***********************************************************/ /* 9*/ ...}; /* USB Standard Device Descriptor */ __ALIGN_BEGIN static uint8_t USBD_DFU_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_DESC] __ALIGN_END = { USB_LEN_DEV_QUALIFIER_DESC, USB_DESC_TYPE_DEVICE_QUALIFIER, 0x00, 0x02, 0x00, 0x00, 0x00, 0x40, 0x01, 0x00, ...};/* ... */ #endif /* USE_USBD_COMPOSITE */ /** * @} *//* ... */ /** @defgroup USBD_DFU_Private_Functions * @{ *//* ... */ /** * @brief USBD_DFU_Init * Initialize the DFU interface * @param pdev: device instance * @param cfgidx: Configuration index * @retval status *//* ... */ static uint8_t USBD_DFU_Init(USBD_HandleTypeDef *pdev, uint8_t cfgidx) { UNUSED(cfgidx); USBD_DFU_HandleTypeDef *hdfu; /* Allocate Audio structure */ hdfu = (USBD_DFU_HandleTypeDef *)USBD_malloc(sizeof(USBD_DFU_HandleTypeDef)); if (hdfu == NULL) { pdev->pClassDataCmsit[pdev->classId] = NULL; return (uint8_t)USBD_EMEM; }if (hdfu == NULL) { ... } pdev->pClassDataCmsit[pdev->classId] = (void *)hdfu; pdev->pClassData = pdev->pClassDataCmsit[pdev->classId]; hdfu->alt_setting = 0U; hdfu->data_ptr = USBD_DFU_APP_DEFAULT_ADD; hdfu->wblock_num = 0U; hdfu->wlength = 0U; hdfu->manif_state = DFU_MANIFEST_COMPLETE; hdfu->dev_state = DFU_STATE_IDLE; hdfu->dev_status[0] = DFU_ERROR_NONE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = DFU_STATE_IDLE; hdfu->dev_status[5] = 0U; /* Initialize Hardware layer */ if (((USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId])->Init() != USBD_OK) { return (uint8_t)USBD_FAIL; }if (((USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId])->Init() != USBD_OK) { ... } return (uint8_t)USBD_OK; }{ ... } /** * @brief USBD_DFU_DeInit * De-Initialize the DFU layer * @param pdev: device instance * @param cfgidx: Configuration index * @retval status *//* ... */ static uint8_t USBD_DFU_DeInit(USBD_HandleTypeDef *pdev, uint8_t cfgidx) { UNUSED(cfgidx); USBD_DFU_HandleTypeDef *hdfu; if (pdev->pClassDataCmsit[pdev->classId] == NULL) { return (uint8_t)USBD_EMEM; }if (pdev->pClassDataCmsit[pdev->classId] == NULL) { ... } hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; hdfu->wblock_num = 0U; hdfu->wlength = 0U; hdfu->dev_state = DFU_STATE_IDLE; hdfu->dev_status[0] = DFU_ERROR_NONE; hdfu->dev_status[4] = DFU_STATE_IDLE; /* DeInit physical Interface components and Hardware Layer */ ((USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId])->DeInit(); USBD_free(pdev->pClassDataCmsit[pdev->classId]); pdev->pClassDataCmsit[pdev->classId] = NULL; pdev->pClassData = NULL; return (uint8_t)USBD_OK; }{ ... } /** * @brief USBD_DFU_Setup * Handle the DFU specific requests * @param pdev: instance * @param req: usb requests * @retval status *//* ... */ static uint8_t USBD_DFU_Setup(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; USBD_StatusTypeDef ret = USBD_OK; uint8_t *pbuf; uint16_t len; uint16_t status_info = 0U; if (hdfu == NULL) { return (uint8_t)USBD_FAIL; }if (hdfu == NULL) { ... } switch (req->bmRequest & USB_REQ_TYPE_MASK) { case USB_REQ_TYPE_CLASS: switch (req->bRequest) { case DFU_DNLOAD: DFU_Download(pdev, req); break; case DFU_DNLOAD: case DFU_UPLOAD: DFU_Upload(pdev, req); break; case DFU_UPLOAD: case DFU_GETSTATUS: DFU_GetStatus(pdev); break; case DFU_GETSTATUS: case DFU_CLRSTATUS: DFU_ClearStatus(pdev); break; case DFU_CLRSTATUS: case DFU_GETSTATE: DFU_GetState(pdev); break; case DFU_GETSTATE: case DFU_ABORT: DFU_Abort(pdev); break; case DFU_ABORT: case DFU_DETACH: DFU_Detach(pdev, req); break; case DFU_DETACH: default: USBD_CtlError(pdev, req); ret = USBD_FAIL; break;default }switch (req->bRequest) { ... } break; case USB_REQ_TYPE_CLASS: case USB_REQ_TYPE_STANDARD: switch (req->bRequest) { case USB_REQ_GET_STATUS: if (pdev->dev_state == USBD_STATE_CONFIGURED) { (void)USBD_CtlSendData(pdev, (uint8_t *)&status_info, 2U); }if (pdev->dev_state == USBD_STATE_CONFIGURED) { ... } else { USBD_CtlError(pdev, req); ret = USBD_FAIL; }else { ... } break; case USB_REQ_GET_STATUS: case USB_REQ_GET_DESCRIPTOR: if ((req->wValue >> 8) == DFU_DESCRIPTOR_TYPE) { pbuf = (uint8_t *)USBD_DFU_GetDfuFuncDesc(pdev->pConfDesc); if (pbuf != NULL) { len = MIN(USB_DFU_DESC_SIZ, req->wLength); (void)USBD_CtlSendData(pdev, pbuf, len); }if (pbuf != NULL) { ... } else { USBD_CtlError(pdev, req); ret = USBD_FAIL; }else { ... } }if ((req->wValue >> 8) == DFU_DESCRIPTOR_TYPE) { ... } break; case USB_REQ_GET_DESCRIPTOR: case USB_REQ_GET_INTERFACE: if (pdev->dev_state == USBD_STATE_CONFIGURED) { (void)USBD_CtlSendData(pdev, (uint8_t *)&hdfu->alt_setting, 1U); }if (pdev->dev_state == USBD_STATE_CONFIGURED) { ... } else { USBD_CtlError(pdev, req); ret = USBD_FAIL; }else { ... } break; case USB_REQ_GET_INTERFACE: case USB_REQ_SET_INTERFACE: if ((uint8_t)(req->wValue) < USBD_DFU_MAX_ITF_NUM) { if (pdev->dev_state == USBD_STATE_CONFIGURED) { hdfu->alt_setting = (uint8_t)(req->wValue); }if (pdev->dev_state == USBD_STATE_CONFIGURED) { ... } else { USBD_CtlError(pdev, req); ret = USBD_FAIL; }else { ... } }if ((uint8_t)(req->wValue) < USBD_DFU_MAX_ITF_NUM) { ... } else { /* Call the error management function (command will be NAKed */ USBD_CtlError(pdev, req); ret = USBD_FAIL; }else { ... } break; case USB_REQ_SET_INTERFACE: case USB_REQ_CLEAR_FEATURE: break; case USB_REQ_CLEAR_FEATURE: default: USBD_CtlError(pdev, req); ret = USBD_FAIL; break;default }switch (req->bRequest) { ... } break; case USB_REQ_TYPE_STANDARD: default: USBD_CtlError(pdev, req); ret = USBD_FAIL; break;default }switch (req->bmRequest & USB_REQ_TYPE_MASK) { ... } return (uint8_t)ret; }{ ... } #ifndef USE_USBD_COMPOSITE /** * @brief USBD_DFU_GetCfgDesc * return configuration descriptor * @param length : pointer data length * @retval pointer to descriptor buffer *//* ... */ static uint8_t *USBD_DFU_GetCfgDesc(uint16_t *length) { *length = (uint16_t)sizeof(USBD_DFU_CfgDesc); return USBD_DFU_CfgDesc; }{ ... } #endif/* ... */ /* USE_USBD_COMPOSITE */ /** * @brief USBD_DFU_EP0_RxReady * handle EP0 Rx Ready event * @param pdev: device instance * @retval status *//* ... */ static uint8_t USBD_DFU_EP0_RxReady(USBD_HandleTypeDef *pdev) { UNUSED(pdev); return (uint8_t)USBD_OK; }{ ... } /** * @brief USBD_DFU_EP0_TxReady * handle EP0 TRx Ready event * @param pdev: device instance * @retval status *//* ... */ static uint8_t USBD_DFU_EP0_TxReady(USBD_HandleTypeDef *pdev) { USBD_SetupReqTypedef req; uint32_t app_addr_ptr; uint32_t addr; USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId]; #if (USBD_DFU_VENDOR_CMD_ENABLED == 1U) uint32_t VendorStatus = 0U; #endif /* USBD_DFU_VENDOR_CMD_ENABLED */ if (hdfu == NULL) { return (uint8_t)USBD_FAIL; }if (hdfu == NULL) { ... } if (hdfu->dev_state == DFU_STATE_DNLOAD_BUSY) { /* Decode the Special Command */ if (hdfu->wblock_num == 0U) { if (hdfu->wlength == 1U) { if (hdfu->buffer.d8[0] == DFU_CMD_GETCOMMANDS) { /* Nothing to do */ }if (hdfu->buffer.d8[0] == DFU_CMD_GETCOMMANDS) { ... } #if (USBD_DFU_VENDOR_CMD_ENABLED == 1U) else { /* Vendor specific DFU CMD */ if (DfuInterface->VendorDownloadCMD(hdfu->buffer.d8, hdfu->wblock_num, hdfu->wlength, &VendorStatus) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = (uint8_t)VendorStatus; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return (uint8_t)USBD_FAIL; }if (DfuInterface->VendorDownloadCMD(hdfu->buffer.d8, hdfu->wblock_num, hdfu->wlength, &VendorStatus) != USBD_OK) { ... } }else { ... } /* ... */#endif /* USBD_DFU_VENDOR_CMD_ENABLED */ }if (hdfu->wlength == 1U) { ... } else if (hdfu->wlength == 5U) { if (hdfu->buffer.d8[0] == DFU_CMD_SETADDRESSPOINTER) { #if (USBD_DFU_VENDOR_CHECK_ENABLED == 1U) if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_SETADDRESSPOINTER, &VendorStatus) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = (uint8_t)VendorStatus; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return (uint8_t)USBD_FAIL; }if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_SETADDRESSPOINTER, &VendorStatus) != USBD_OK) { ... } /* ... */#endif /* USBD_DFU_VENDOR_CHECK_ENABLED */ hdfu->data_ptr = hdfu->buffer.d8[1]; hdfu->data_ptr += (uint32_t)hdfu->buffer.d8[2] << 8; hdfu->data_ptr += (uint32_t)hdfu->buffer.d8[3] << 16; hdfu->data_ptr += (uint32_t)hdfu->buffer.d8[4] << 24; }if (hdfu->buffer.d8[0] == DFU_CMD_SETADDRESSPOINTER) { ... } else if (hdfu->buffer.d8[0] == DFU_CMD_ERASE) { #if (USBD_DFU_VENDOR_CHECK_ENABLED == 1U) if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_DOWNLOAD, &VendorStatus) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = (uint8_t)VendorStatus; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return (uint8_t)USBD_FAIL; }if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_DOWNLOAD, &VendorStatus) != USBD_OK) { ... } /* ... */#endif /* USBD_DFU_VENDOR_CHECK_ENABLED */ app_addr_ptr = hdfu->buffer.d8[1]; app_addr_ptr += (uint32_t)hdfu->buffer.d8[2] << 8; app_addr_ptr += (uint32_t)hdfu->buffer.d8[3] << 16; app_addr_ptr += (uint32_t)hdfu->buffer.d8[4] << 24; if (DfuInterface->Erase(app_addr_ptr) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = DFU_ERROR_VENDOR; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return (uint8_t)USBD_FAIL; }if (DfuInterface->Erase(app_addr_ptr) != USBD_OK) { ... } }else if (hdfu->buffer.d8[0] == DFU_CMD_ERASE) { ... } #if (USBD_DFU_VENDOR_CMD_ENABLED == 1U) else { /* Vendor specific DFU CMD */ if (DfuInterface->VendorDownloadCMD(hdfu->buffer.d8, hdfu->wblock_num, hdfu->wlength, &VendorStatus) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = (uint8_t)VendorStatus; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return (uint8_t)USBD_FAIL; }if (DfuInterface->VendorDownloadCMD(hdfu->buffer.d8, hdfu->wblock_num, hdfu->wlength, &VendorStatus) != USBD_OK) { ... } }else { ... } /* ... */#else else { return (uint8_t)USBD_FAIL; }else { ... } /* ... */#endif /* USBD_DFU_VENDOR_CMD_ENABLED */ }else if (hdfu->wlength == 5U) { ... } else { /* Reset the global length and block number */ hdfu->wlength = 0U; hdfu->wblock_num = 0U; /* Call the error management function (command will be NAKed) */ req.bmRequest = 0U; req.wLength = 1U; USBD_CtlError(pdev, &req); }else { ... } }if (hdfu->wblock_num == 0U) { ... } /* Regular Download Command */ else { if (hdfu->wblock_num > 1U) { #if (USBD_DFU_VENDOR_CHECK_ENABLED == 1U) if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_DOWNLOAD, &VendorStatus) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = (uint8_t)VendorStatus; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return (uint8_t)USBD_FAIL; }if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_DOWNLOAD, &VendorStatus) != USBD_OK) { ... } /* ... */#endif /* USBD_DFU_VENDOR_CHECK_ENABLED */ /* Decode the required address */ addr = ((hdfu->wblock_num - 2U) * USBD_DFU_XFER_SIZE) + hdfu->data_ptr; /* Perform the write operation */ if (DfuInterface->Write(hdfu->buffer.d8, (uint8_t *)addr, hdfu->wlength) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = DFU_ERROR_VENDOR; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return (uint8_t)USBD_FAIL; }if (DfuInterface->Write(hdfu->buffer.d8, (uint8_t *)addr, hdfu->wlength) != USBD_OK) { ... } }if (hdfu->wblock_num > 1U) { ... } }else { ... } /* Reset the global length and block number */ hdfu->wlength = 0U; hdfu->wblock_num = 0U; /* Update the state machine */ hdfu->dev_state = DFU_STATE_DNLOAD_SYNC; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; }if (hdfu->dev_state == DFU_STATE_DNLOAD_BUSY) { ... } else if (hdfu->dev_state == DFU_STATE_MANIFEST)/* Manifestation in progress */ { /* Start leaving DFU mode */ DFU_Leave(pdev); ...} else { return (uint8_t)USBD_FAIL; }else { ... } return (uint8_t)USBD_OK; }{ ... } /** * @brief USBD_DFU_SOF * handle SOF event * @param pdev: device instance * @retval status *//* ... */ static uint8_t USBD_DFU_SOF(USBD_HandleTypeDef *pdev) { UNUSED(pdev); return (uint8_t)USBD_OK; }{ ... } #ifndef USE_USBD_COMPOSITE /** * @brief DeviceQualifierDescriptor * return Device Qualifier descriptor * @param length : pointer data length * @retval pointer to descriptor buffer *//* ... */ static uint8_t *USBD_DFU_GetDeviceQualifierDesc(uint16_t *length) { *length = (uint16_t)sizeof(USBD_DFU_DeviceQualifierDesc); return USBD_DFU_DeviceQualifierDesc; }{ ... } #endif/* ... */ /* USE_USBD_COMPOSITE */ /** * @brief USBD_DFU_GetUsrStringDesc * Manages the transfer of memory interfaces string descriptors. * @param pdev: device instance * @param index: descriptor index * @param length : pointer data length * @retval pointer to the descriptor table or NULL if the descriptor is not supported. *//* ... */ #if (USBD_SUPPORT_USER_STRING_DESC == 1U) static uint8_t *USBD_DFU_GetUsrStringDesc(USBD_HandleTypeDef *pdev, uint8_t index, uint16_t *length) { static uint8_t USBD_StrDesc[255]; USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId]; /* Check if the requested string interface is supported */ if (index <= (USBD_IDX_INTERFACE_STR + USBD_DFU_MAX_ITF_NUM)) { USBD_GetString((uint8_t *)DfuInterface->pStrDesc, USBD_StrDesc, length); return USBD_StrDesc; }if (index <= (USBD_IDX_INTERFACE_STR + USBD_DFU_MAX_ITF_NUM)) { ... } else { /* Not supported Interface Descriptor index */ *length = 0U; return NULL; }else { ... } }{ ... } /* ... */#endif /* USBD_SUPPORT_USER_STRING_DESC */ /** * @brief USBD_MSC_RegisterStorage * @param pdev: device instance * @param fops: storage callback * @retval status *//* ... */ uint8_t USBD_DFU_RegisterMedia(USBD_HandleTypeDef *pdev, USBD_DFU_MediaTypeDef *fops) { if (fops == NULL) { return (uint8_t)USBD_FAIL; }if (fops == NULL) { ... } pdev->pUserData[pdev->classId] = fops; return (uint8_t)USBD_OK; }{ ... } /****************************************************************************** DFU Class requests management ******************************************************************************//* ... */ /** * @brief DFU_Detach * Handles the DFU DETACH request. * @param pdev: device instance * @param req: pointer to the request structure. * @retval None. *//* ... */ static void DFU_Detach(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; USBD_DFUFuncDescTypeDef *pDfuFunc = (USBD_DFUFuncDescTypeDef *)USBD_DFU_GetDfuFuncDesc(pdev->pConfDesc); if ((hdfu == NULL) || (pDfuFunc == NULL)) { return; }if ((hdfu == NULL) || (pDfuFunc == NULL)) { ... } if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_DNLOAD_SYNC) || (hdfu->dev_state == DFU_STATE_DNLOAD_IDLE) || (hdfu->dev_state == DFU_STATE_MANIFEST_SYNC) || (hdfu->dev_state == DFU_STATE_UPLOAD_IDLE)) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_IDLE; hdfu->dev_status[0] = DFU_ERROR_NONE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; /*bwPollTimeout=0ms*/ hdfu->dev_status[4] = hdfu->dev_state; hdfu->dev_status[5] = 0U; /*iString*/ hdfu->wblock_num = 0U; hdfu->wlength = 0U; }if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_DNLOAD_SYNC) || (hdfu->dev_state == DFU_STATE_DNLOAD_IDLE) || (hdfu->dev_state == DFU_STATE_MANIFEST_SYNC) || (hdfu->dev_state == DFU_STATE_UPLOAD_IDLE)) { ... } /* Check the detach capability in the DFU functional descriptor */ if ((pDfuFunc->bmAttributes & DFU_DETACH_MASK) != 0U) { /* Perform an Attach-Detach operation on USB bus */ (void)USBD_Stop(pdev); (void)USBD_Start(pdev); }if ((pDfuFunc->bmAttributes & DFU_DETACH_MASK) != 0U) { ... } else { /* Wait for the period of time specified in Detach request */ USBD_Delay((uint32_t)req->wValue); }else { ... } }{ ... } /** * @brief DFU_Download * Handles the DFU DNLOAD request. * @param pdev: device instance * @param req: pointer to the request structure * @retval None *//* ... */ static void DFU_Download(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; #if (USBD_DFU_VENDOR_CMD_ENABLED == 1U) USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId]; uint32_t VendorStatus = 0U;/* ... */ #endif /* USBD_DFU_VENDOR_CMD_ENABLED */ if (hdfu == NULL) { return; }if (hdfu == NULL) { ... } /* Data setup request */ if (req->wLength > 0U) { if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_DNLOAD_IDLE)) { /* Update the global length and block number */ hdfu->wblock_num = req->wValue; hdfu->wlength = MIN(req->wLength, USBD_DFU_XFER_SIZE); /* Update the state machine */ hdfu->dev_state = DFU_STATE_DNLOAD_SYNC; hdfu->dev_status[4] = hdfu->dev_state; /* Prepare the reception of the buffer over EP0 */ (void)USBD_CtlPrepareRx(pdev, (uint8_t *)hdfu->buffer.d8, hdfu->wlength); }if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_DNLOAD_IDLE)) { ... } /* Unsupported state */ else { /* Call the error management function (command will be NAKed */ USBD_CtlError(pdev, req); }else { ... } }if (req->wLength > 0U) { ... } /* 0 Data DNLOAD request */ else { /* End of DNLOAD operation */ if ((hdfu->dev_state == DFU_STATE_DNLOAD_IDLE) || (hdfu->dev_state == DFU_STATE_IDLE)) { #if (USBD_DFU_VENDOR_CHECK_ENABLED == 1U) if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_SETADDRESSPOINTER, &VendorStatus) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = (uint8_t)VendorStatus; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; }if (DfuInterface->VendorCheck(hdfu->buffer.d8, IS_DFU_SETADDRESSPOINTER, &VendorStatus) != USBD_OK) { ... } else #endif /* USBD_DFU_VENDOR_CHECK_ENABLED */ { hdfu->manif_state = DFU_MANIFEST_IN_PROGRESS; hdfu->dev_state = DFU_STATE_MANIFEST_SYNC; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; }else { ... } }if ((hdfu->dev_state == DFU_STATE_DNLOAD_IDLE) || (hdfu->dev_state == DFU_STATE_IDLE)) { ... } else { /* Call the error management function (command will be NAKed */ USBD_CtlError(pdev, req); }else { ... } }else { ... } }{ ... } /** * @brief DFU_Upload * Handles the DFU UPLOAD request. * @param pdev: instance * @param req: pointer to the request structure * @retval status *//* ... */ static void DFU_Upload(USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId]; uint8_t *phaddr; uint32_t addr; uint32_t CmdLength; #if (USBD_DFU_VENDOR_CMD_ENABLED == 1U) uint32_t VendorStatus = 0U; uint8_t VendorCmdLength = 0U; uint8_t VendorCmdBuffer[DFU_VENDOR_CMD_MAX]; uint8_t idx;/* ... */ #endif /* USBD_DFU_VENDOR_CMD_ENABLED */ if (hdfu == NULL) { return; }if (hdfu == NULL) { ... } /* Data setup request */ if (req->wLength > 0U) { if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_UPLOAD_IDLE)) { /* Update the global length and block number */ hdfu->wblock_num = req->wValue; hdfu->wlength = MIN(req->wLength, USBD_DFU_XFER_SIZE); /* DFU Get Command */ if (hdfu->wblock_num == 0U) { /* Update the state machine */ hdfu->dev_state = (hdfu->wlength > 3U) ? DFU_STATE_IDLE : DFU_STATE_UPLOAD_IDLE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; /* Store the values of all supported commands */ hdfu->buffer.d8[0] = DFU_CMD_GETCOMMANDS; hdfu->buffer.d8[1] = DFU_CMD_SETADDRESSPOINTER; hdfu->buffer.d8[2] = DFU_CMD_ERASE; CmdLength = 3U; #if (USBD_DFU_VENDOR_CMD_ENABLED == 1U) if (DfuInterface->GetVendorCMD != NULL) { (void)DfuInterface->GetVendorCMD(VendorCmdBuffer, (uint8_t *)&VendorCmdLength); for (idx = 0U; idx < MIN(VendorCmdLength, DFU_VENDOR_CMD_MAX); idx++) { hdfu->buffer.d8[idx + 3U] = VendorCmdBuffer[idx]; }for (idx = 0U; idx < MIN(VendorCmdLength, DFU_VENDOR_CMD_MAX); idx++) { ... } CmdLength += MIN(VendorCmdLength, DFU_VENDOR_CMD_MAX); }if (DfuInterface->GetVendorCMD != NULL) { ... } /* ... */#endif /* USBD_DFU_VENDOR_CMD_ENABLED */ /* Send the status data over EP0 */ (void)USBD_CtlSendData(pdev, (uint8_t *)(&(hdfu->buffer.d8[0])), CmdLength); }if (hdfu->wblock_num == 0U) { ... } else if (hdfu->wblock_num > 1U) { hdfu->dev_state = DFU_STATE_UPLOAD_IDLE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; #if (USBD_DFU_VENDOR_CMD_ENABLED == 1U) /* Vendor specific DFU CMD */ if (DfuInterface->VendorUploadCMD(hdfu->data_ptr, hdfu->wblock_num, &VendorStatus) != USBD_OK) { /* Update the state machine */ hdfu->dev_state = DFU_ERROR_STALLEDPKT; hdfu->dev_status[0] = (uint8_t)VendorStatus; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; /* Call the error management function (command will be NAKed) */ USBD_CtlError(pdev, req); }if (DfuInterface->VendorUploadCMD(hdfu->data_ptr, hdfu->wblock_num, &VendorStatus) != USBD_OK) { ... } if (VendorStatus == IS_DFU_PHY_ADDRESS)/* ... */ #endif /* USBD_DFU_VENDOR_CMD_ENABLED */ { addr = ((hdfu->wblock_num - 2U) * USBD_DFU_XFER_SIZE) + hdfu->data_ptr; /* Return the physical address where data are stored */ phaddr = DfuInterface->Read((uint8_t *)addr, hdfu->buffer.d8, hdfu->wlength); if (phaddr == NULL) { hdfu->dev_state = DFU_ERROR_STALLEDPKT; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; /* Call the error management function (command will be NAKed) */ USBD_CtlError(pdev, req); }if (phaddr == NULL) { ... } else { /* Send the status data over EP0 */ (void)USBD_CtlSendData(pdev, phaddr, hdfu->wlength); }else { ... } ...} }else if (hdfu->wblock_num > 1U) { ... } else /* unsupported hdfu->wblock_num */ { hdfu->dev_state = DFU_ERROR_STALLEDPKT; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; /* Call the error management function (command will be NAKed) */ USBD_CtlError(pdev, req); }else { ... } }if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_UPLOAD_IDLE)) { ... } /* Unsupported state */ else { hdfu->wlength = 0U; hdfu->wblock_num = 0U; /* Call the error management function (command will be NAKed) */ USBD_CtlError(pdev, req); }else { ... } }if (req->wLength > 0U) { ... } /* No Data setup request */ else { hdfu->dev_state = DFU_STATE_IDLE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; }else { ... } }{ ... } /** * @brief DFU_GetStatus * Handles the DFU GETSTATUS request. * @param pdev: instance * @retval status *//* ... */ static void DFU_GetStatus(USBD_HandleTypeDef *pdev) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId]; USBD_DFUFuncDescTypeDef *pDfuFunc = (USBD_DFUFuncDescTypeDef *)USBD_DFU_GetDfuFuncDesc(pdev->pConfDesc); if ((hdfu == NULL) || (DfuInterface == NULL) || (pDfuFunc == NULL)) { return; }if ((hdfu == NULL) || (DfuInterface == NULL) || (pDfuFunc == NULL)) { ... } switch (hdfu->dev_state) { case DFU_STATE_DNLOAD_SYNC: if (hdfu->wlength != 0U) { hdfu->dev_state = DFU_STATE_DNLOAD_BUSY; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; if ((hdfu->wblock_num == 0U) && (hdfu->buffer.d8[0] == DFU_CMD_ERASE)) { DfuInterface->GetStatus(hdfu->data_ptr, DFU_MEDIA_ERASE, hdfu->dev_status); }if ((hdfu->wblock_num == 0U) && (hdfu->buffer.d8[0] == DFU_CMD_ERASE)) { ... } else { DfuInterface->GetStatus(hdfu->data_ptr, DFU_MEDIA_PROGRAM, hdfu->dev_status); }else { ... } }if (hdfu->wlength != 0U) { ... } else /* (hdfu->wlength == 0U) */ { hdfu->dev_state = DFU_STATE_DNLOAD_IDLE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; }else { ... } break; case DFU_STATE_DNLOAD_SYNC: case DFU_STATE_MANIFEST_SYNC: if (hdfu->manif_state == DFU_MANIFEST_IN_PROGRESS) { hdfu->dev_state = DFU_STATE_MANIFEST; hdfu->dev_status[1] = 1U; /* bwPollTimeout = 1ms */ hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; }if (hdfu->manif_state == DFU_MANIFEST_IN_PROGRESS) { ... } else { if ((hdfu->manif_state == DFU_MANIFEST_COMPLETE) && ((pDfuFunc->bmAttributes & DFU_MANIFEST_MASK) != 0U)) { hdfu->dev_state = DFU_STATE_IDLE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; }if ((hdfu->manif_state == DFU_MANIFEST_COMPLETE) && ((pDfuFunc->bmAttributes & DFU_MANIFEST_MASK) != 0U)) { ... } }else { ... } break; case DFU_STATE_MANIFEST_SYNC: default: break;default }switch (hdfu->dev_state) { ... } /* Send the status data over EP0 */ (void)USBD_CtlSendData(pdev, (uint8_t *)(&(hdfu->dev_status[0])), 6U); }{ ... } /** * @brief DFU_ClearStatus * Handles the DFU CLRSTATUS request. * @param pdev: device instance * @retval status *//* ... */ static void DFU_ClearStatus(USBD_HandleTypeDef *pdev) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; if (hdfu == NULL) { return; }if (hdfu == NULL) { ... } if (hdfu->dev_state == DFU_STATE_ERROR) { hdfu->dev_state = DFU_STATE_IDLE; hdfu->dev_status[0] = DFU_ERROR_NONE; /* bStatus */ hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; /* bwPollTimeout=0ms */ hdfu->dev_status[4] = hdfu->dev_state; /* bState */ hdfu->dev_status[5] = 0U; /* iString */ }if (hdfu->dev_state == DFU_STATE_ERROR) { ... } else { /* State Error */ hdfu->dev_state = DFU_STATE_ERROR; hdfu->dev_status[0] = DFU_ERROR_UNKNOWN; /* bStatus */ hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; /* bwPollTimeout=0ms */ hdfu->dev_status[4] = hdfu->dev_state; /* bState */ hdfu->dev_status[5] = 0U; /* iString */ }else { ... } }{ ... } /** * @brief DFU_GetState * Handles the DFU GETSTATE request. * @param pdev: device instance * @retval None *//* ... */ static void DFU_GetState(USBD_HandleTypeDef *pdev) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; if (hdfu == NULL) { return; }if (hdfu == NULL) { ... } /* Return the current state of the DFU interface */ (void)USBD_CtlSendData(pdev, &hdfu->dev_state, 1U); }{ ... } /** * @brief DFU_Abort * Handles the DFU ABORT request. * @param pdev: device instance * @retval None *//* ... */ static void DFU_Abort(USBD_HandleTypeDef *pdev) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; if (hdfu == NULL) { return; }if (hdfu == NULL) { ... } if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_DNLOAD_SYNC) || (hdfu->dev_state == DFU_STATE_DNLOAD_IDLE) || (hdfu->dev_state == DFU_STATE_MANIFEST_SYNC) || (hdfu->dev_state == DFU_STATE_UPLOAD_IDLE)) { hdfu->dev_state = DFU_STATE_IDLE; hdfu->dev_status[0] = DFU_ERROR_NONE; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; /* bwPollTimeout=0ms */ hdfu->dev_status[4] = hdfu->dev_state; hdfu->dev_status[5] = 0U; /* iString */ hdfu->wblock_num = 0U; hdfu->wlength = 0U; }if ((hdfu->dev_state == DFU_STATE_IDLE) || (hdfu->dev_state == DFU_STATE_DNLOAD_SYNC) || (hdfu->dev_state == DFU_STATE_DNLOAD_IDLE) || (hdfu->dev_state == DFU_STATE_MANIFEST_SYNC) || (hdfu->dev_state == DFU_STATE_UPLOAD_IDLE)) { ... } }{ ... } /** * @brief DFU_Leave * Handles the sub-protocol DFU leave DFU mode request (leaves DFU mode * and resets device to jump to user loaded code). * @param pdev: device instance * @retval None *//* ... */ static void DFU_Leave(USBD_HandleTypeDef *pdev) { USBD_DFU_HandleTypeDef *hdfu = (USBD_DFU_HandleTypeDef *)pdev->pClassDataCmsit[pdev->classId]; USBD_DFU_MediaTypeDef *DfuInterface = (USBD_DFU_MediaTypeDef *)pdev->pUserData[pdev->classId]; USBD_DFUFuncDescTypeDef *pDfuFunc = (USBD_DFUFuncDescTypeDef *)USBD_DFU_GetDfuFuncDesc(pdev->pConfDesc); if ((hdfu == NULL) || (DfuInterface == NULL) || (pDfuFunc == NULL)) { return; }if ((hdfu == NULL) || (DfuInterface == NULL) || (pDfuFunc == NULL)) { ... } hdfu->manif_state = DFU_MANIFEST_COMPLETE; if ((pDfuFunc->bmAttributes & DFU_MANIFEST_MASK) != 0U) { hdfu->dev_state = DFU_STATE_MANIFEST_SYNC; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; return; }if ((pDfuFunc->bmAttributes & DFU_MANIFEST_MASK) != 0U) { ... } else { hdfu->dev_state = DFU_STATE_MANIFEST_WAIT_RESET; hdfu->dev_status[1] = 0U; hdfu->dev_status[2] = 0U; hdfu->dev_status[3] = 0U; hdfu->dev_status[4] = hdfu->dev_state; /* Disconnect the USB device */ (void)USBD_Stop(pdev); #if (USBD_DFU_VENDOR_EXIT_ENABLED == 1U) /* Jump should be ensured by user application */ DfuInterface->LeaveDFU(hdfu->data_ptr);/* ... */ #else /* Generate system reset to allow jumping to the user code */ NVIC_SystemReset();/* ... */ #endif /* USBD_DFU_VENDOR_EXIT_ENABLED */ /* The next instructions will not be reached (system reset) */ }else { ... } }{ ... } /** * @brief USBD_DFU_GetDfuFuncDesc * This function return the DFU descriptor * @param pdev: device instance * @param pConfDesc: pointer to Bos descriptor * @retval pointer to the DFU descriptor *//* ... */ static void *USBD_DFU_GetDfuFuncDesc(uint8_t *pConfDesc) { USBD_ConfigDescTypeDef *desc = (USBD_ConfigDescTypeDef *)(void *)pConfDesc; USBD_DescHeaderTypeDef *pdesc = (USBD_DescHeaderTypeDef *)(void *)pConfDesc; uint8_t *pDfuDesc = NULL; uint16_t ptr; if (desc->wTotalLength > desc->bLength) { ptr = desc->bLength; while (ptr < desc->wTotalLength) { pdesc = USBD_GetNextDesc((uint8_t *)pdesc, &ptr); if (pdesc->bDescriptorType == DFU_DESCRIPTOR_TYPE) { pDfuDesc = (uint8_t *)pdesc; break; }if (pdesc->bDescriptorType == DFU_DESCRIPTOR_TYPE) { ... } }while (ptr < desc->wTotalLength) { ... } }if (desc->wTotalLength > desc->bLength) { ... } return pDfuDesc; }{ ... } /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */ Includes