ST意法半导体中文论坛问答

求助，STM32F723ZCT6 使用内部HS phy 实现SD卡模拟U盘功能，可.....

STM32 STM32F7

butterflyspring 回答时间：2020-5-14 11:19

找到了一个官方例程，在HAL 库里，供你参考，希望能解决你的问题。 STM32Cube_FW_F7_V1.11.0\Projects\STM32756G_EVAL\Applications%uSB_Device\MSC_Standalone\EWARM 其实在F4系列上也发现了这样的官方例程，刚好有F4的板子，试了一下，可以连接和格式化的

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4 回答

网上那些V2.93版本的uCOSII从哪来的？？

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feier567 回答时间：2020-5-13 22:36

找半天原来不在micrium了，在siliconlabs上，想从2.86升级上去，但看了2.93的cpu汇编好像改了好多，不知道怎么用了

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10 回答

STM32L011F4P6怎么会运行不起来？

STM32 STM32L0

butterflyspring 回答时间：2020-5-13 17:18

有趣的观点不过搞嵌入式不易，都得懂点啊

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10 回答

STM32F407 ADC采集电池的电压，电池存在异常耗电

STM32 STM32F4

butterflyspring 回答时间：2020-5-13 17:00

R39用的是0欧姆,在MCU 上电工作时有一定的注入电流，会很小但也应该避免。在MCU掉电后，会有很大的电流产生。并且ADC转换电路也需要一个外部串联电阻，基于你的这个应用，这个电阻尽量大些，但是要考虑充放电时间，还请根据手册估算一下，软件的采样时间也选择尽可能长的时间以减少平时的电流消耗。

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8 回答

F4之FPU库里面arm_sin_f32()的计算

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lanmanck 回答时间：2020-5-13 11:50

验证个毛线，老子怼的就是你。n多的bug已经被证明，自己好好看一看。 http://blog.csdn.net/xfwangqiang/article/details/51365168

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3 回答

不好意思，我可能说的不够清楚，因为是在STM32_USB-Host-Device_Lib_V2.2.0库的基础上修改的，只修改了usbd_customhid_core.c这个文件的内容。我把完整的内容贴出来。 /** ****************************************************************************** * @file usbd_customhid_core.c * @author MCD Application Team * @version V1.2.0 * @date 09-November-2015 * @brief This file provides the CUSTOM_HID core functions. * * @verbatim * * =================================================================== * CUSTOM_HID Class Description * =================================================================== * This module manages the HID class V1.11 following the "Device Class Definition * for Human Interface Devices (CUSTOM_HID) Version 1.11 Jun 27, 2001". * This driver implements the following aspects of the specification: * - The Boot Interface Subclass * - The Mouse protocol * - Usage Page : Generic Desktop * - Usage : Vendor * - Collection : Application * * @note In HS mode and when the DMA is used, all variables and data structures * dealing with the DMA during the transaction process should be 32-bit aligned. * * * @endverbatim * ****************************************************************************** * @attention * * © COPYRIGHT 2015 STMicroelectronics * * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); * You may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.st.com/software_license_agreement_liberty_v2 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "usbd_customhid_core.h" #include "usbd_desc.h" #include "usbd_req.h" extern void addData2RcvBuffer(u8 *pData, u8 Len); /** @defgroup USBD_CUSTOM_HID_Private_FunctionPrototypes * @{ */ uint8_t USBD_CUSTOM_HID_Init (void *pdev, uint8_t cfgidx); uint8_t USBD_CUSTOM_HID_DeInit (void *pdev, uint8_t cfgidx); uint8_t USBD_CUSTOM_HID_Setup (void *pdev, USB_SETUP_REQ *req); static uint8_t *USBD_CUSTOM_HID_GetCfgDesc (uint8_t speed, uint16_t *length); uint8_t USBD_CUSTOM_HID_DataIn (void *pdev, uint8_t epnum); uint8_t USBD_CUSTOM_HID_DataOut (void *pdev, uint8_t epnum); uint8_t USBD_CUSTOM_HID_EP0_RxReady (void *pdev); /** * @} */ /** @defgroup USBD_HID_Private_Variables * @{ */ USBD_Class_cb_TypeDef USBD_CUSTOMHID_cb = { USBD_CUSTOM_HID_Init, USBD_CUSTOM_HID_DeInit, USBD_CUSTOM_HID_Setup, NULL, /*EP0_TxSent*/ USBD_CUSTOM_HID_EP0_RxReady, /*EP0_RxReady*/ /* STATUS STAGE IN */ USBD_CUSTOM_HID_DataIn, /*DataIn*/ USBD_CUSTOM_HID_DataOut, NULL, /*SOF */ NULL, NULL, USBD_CUSTOM_HID_GetCfgDesc, #ifdef USB_OTG_HS_CORE USBD_CUSTOM_HID_GetCfgDesc, /* use same config as per FS */ #endif }; uint8_t USB_HID_RcvBuf[64]; uint8_t USBD_HID_Report_ID=0; __IO uint32_t IsReportAvailable = 0; uint8_t usbRcvCnt = 0; //extern uint8_t PrevXferDone; #ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED #if defined ( __ICCARM__ ) /*!< IAR Compiler */ #pragma data_alignment=4 #endif #endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */ __ALIGN_BEGIN static uint32_t USBD_HID_AltSet __ALIGN_END = 0; #ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED #if defined ( __ICCARM__ ) /*!< IAR Compiler */ #pragma data_alignment=4 #endif #endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */ __ALIGN_BEGIN static uint32_t USBD_HID_Protocol __ALIGN_END = 0; #ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED #if defined ( __ICCARM__ ) /*!< IAR Compiler */ #pragma data_alignment=4 #endif #endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */ __ALIGN_BEGIN static uint32_t USBD_HID_IdleState __ALIGN_END = 0; #ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED #if defined ( __ICCARM__ ) /*!< IAR Compiler */ #pragma data_alignment=4 #endif #endif /* USB_OTG_HS_INTERNAL_DMA_ENABLED */ /* USB HID device Configuration Descriptor */ __ALIGN_BEGIN static uint8_t USBD_CUSTOM_HID_CfgDesc __ALIGN_END = { 0x09, /* bLength: Configuration Descriptor size */ USB_CONFIGURATION_DESCRIPTOR_TYPE, /* bDescriptorType: Configuration */ USB_CUSTOM_HID_CONFIG_DESC_SIZ, /* 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 and Support Remote Wake-up */ 0x32, /*MaxPower 100 mA: this current is used for detecting Vbus*/ /************** Descriptor of Custom HID interface ****************/ /* 09 */ 0x09, /*bLength: Interface Descriptor size*/ USB_INTERFACE_DESCRIPTOR_TYPE,/*bDescriptorType: Interface descriptor type*/ 0x00, /*bInterfaceNumber: Number of Interface*/ 0x00, /*bAlternateSetting: Alternate setting*/ 0x02, /*bNumEndpoints*/ 0x03, /*bInterfaceClass: HID*/ 0x00, /*bInterfaceSubClass : 1=BOOT, 0=no boot*/ 0x00, /*nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse*/ 0, /*iInterface: Index of string descriptor*/ /******************** Descriptor of Custom HID ********************/ /* 18 */ 0x09, /*bLength: HID Descriptor size*/ CUSTOM_HID_DESCRIPTOR_TYPE, /*bDescriptorType: HID*/ 0x11, /*bcdHID: HID Class Spec release number*/ 0x01, 0x00, /*bCountryCode: Hardware target country*/ 0x01, /*bNumDescriptors: Number of HID class descriptors to follow*/ 0x22, /*bDescriptorType*/ USBD_CUSTOM_HID_REPORT_DESC_SIZE,/*wItemLength: Total length of Report descriptor*/ 0x00, /******************** Descriptor of Custom HID endpoints ***********/ /* 27 */ 0x07, /* bLength: Endpoint Descriptor size */ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */ HID_IN_EP, /* bEndpointAddress: Endpoint Address (IN) */ 0x03, /* bmAttributes: Interrupt endpoint */ 0x40, //HID_IN_PACKET, /* wMaxPacketSize: Bytes max */ 0x00, 0x20, /* bInterval: Polling Interval (32 ms) */ /* 34 */ 0x07, /* bLength: Endpoint Descriptor size */ USB_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType: */ /* Endpoint descriptor type */ HID_OUT_EP, /* bEndpointAddress: */ /* Endpoint Address (OUT) */ 0x03, /* bmAttributes: Interrupt endpoint */ 0x40, //HID_OUT_PACKET, /* wMaxPacketSize: 2 Bytes max */ 0x00, 0x20, /* bInterval: Polling Interval (20 ms) */ /* 41 */ } ; #ifdef USB_OTG_HS_INTERNAL_DMA_ENABLED #if defined ( __ICCARM__ ) /*!< IAR Compiler */ #pragma data_alignment=4 #endif #endif __ALIGN_BEGIN static uint8_t CustomHID_ReportDesc __ALIGN_END = { 0x06,0x00,0xff,/* USAGE_PAGE */ 0x05, 0x8c, /* USAGE_PAGE (ST Page) */ 0x09, 0x01, /* USAGE (Demo Kit) */ 0xa1, 0x01, /* COLLECTION (Application) */ // The Input report 0x09,0x03, // USAGE ID - Vendor defined 0x15,0x00, // LOGICAL_MINIMUM (0) 0x26,0x00, 0xFF, // LOGICAL_MAXIMUM (255) 0x75,0x08, // REPORT_SIZE (8bit) 0x95,0x40, // REPORT_COUNT (64Byte) 0x81,0x02, // INPUT (Data,Var,Abs) // The Output report 0x09,0x04, // USAGE ID - Vendor defined 0x15,0x00, // LOGICAL_MINIMUM (0) 0x26,0x00,0xFF, // LOGICAL_MAXIMUM (255) 0x75,0x08, // REPORT_SIZE (8bit) 0x95,0x40, // REPORT_COUNT (64Byte) 0x91,0x02, // OUTPUT (Data,Var,Abs) 0xc0 /* END_COLLECTION */ }; /** * @} */ /** @defgroup USBD_HID_Private_Functions * @{ */ /** * @brief USBD_HID_Init * Initialize the HID interface * @param pdev: device instance * @param cfgidx: Configuration index * @retval status */ uint8_t USBD_CUSTOM_HID_Init (void *pdev, uint8_t cfgidx) { /* Open EP IN */ DCD_EP_Open(pdev, HID_IN_EP, HID_IN_PACKET, USB_OTG_EP_INT); /* Open EP OUT */ DCD_EP_Open(pdev, HID_OUT_EP, HID_OUT_PACKET, USB_OTG_EP_INT); /*Receive Data*/ DCD_EP_PrepareRx(pdev,HID_OUT_EP, USB_HID_RcvBuf,64); return USBD_OK; } /** * @brief USBD_HID_Init * DeInitialize the HID layer * @param pdev: device instance * @param cfgidx: Configuration index * @retval status */ uint8_t USBD_CUSTOM_HID_DeInit (void *pdev, uint8_t cfgidx) { /* Close HID EPs */ DCD_EP_Close (pdev , HID_IN_EP); DCD_EP_Close (pdev , HID_OUT_EP); return USBD_OK; } /** * @brief USBD_HID_Setup * Handle the HID specific requests * @param pdev: instance * @param req: usb requests * @retval status */ uint8_t USBD_CUSTOM_HID_Setup (void *pdev, USB_SETUP_REQ *req) { uint8_t USBD_HID_Report_LENGTH=0; uint16_t len = 0; uint8_t *pbuf = NULL; switch (req->bmRequest & USB_REQ_TYPE_MASK) { case USB_REQ_TYPE_CLASS : switch (req->bRequest) { case CUSTOM_HID_REQ_SET_PROTOCOL: USBD_HID_Protocol = (uint8_t)(req->wValue); break; case CUSTOM_HID_REQ_GET_PROTOCOL: USBD_CtlSendData (pdev, (uint8_t *)&USBD_HID_Protocol, 1); break; case CUSTOM_HID_REQ_SET_IDLE: USBD_HID_IdleState = (uint8_t)(req->wValue >> 8); break; case CUSTOM_HID_REQ_GET_IDLE: USBD_CtlSendData (pdev, (uint8_t *)&USBD_HID_IdleState, 1); break; case CUSTOM_HID_REQ_SET_REPORT: IsReportAvailable = 1; USBD_HID_Report_ID = (uint8_t)(req->wValue); USBD_HID_Report_LENGTH = (uint8_t)(req->wLength); USBD_CtlPrepareRx (pdev, USB_HID_RcvBuf, USBD_HID_Report_LENGTH); break; default: USBD_CtlError (pdev, req); return USBD_FAIL; } break; case USB_REQ_TYPE_STANDARD: switch (req->bRequest) { case USB_REQ_GET_DESCRIPTOR: if( req->wValue >> 8 == CUSTOM_HID_REPORT_DESC) { len = MIN(USBD_CUSTOM_HID_REPORT_DESC_SIZE , req->wLength); pbuf = (uint8_t*)CustomHID_ReportDesc; } else if( req->wValue >> 8 == CUSTOM_HID_DESCRIPTOR_TYPE) { pbuf = (uint8_t*)USBD_CUSTOM_HID_CfgDesc + 0x12; len = MIN(USB_CUSTOM_HID_DESC_SIZ , req->wLength); } USBD_CtlSendData (pdev, pbuf, len); break; case USB_REQ_GET_INTERFACE : USBD_CtlSendData (pdev, (uint8_t *)&USBD_HID_AltSet, 1); break; case USB_REQ_SET_INTERFACE : USBD_HID_AltSet = (uint8_t)(req->wValue); break; } } return USBD_OK; } /** * @brief USBD_HID_SendReport * Send HID Report * @param pdev: device instance * @param buff: pointer to report * @retval status */ uint8_t USBD_CUSTOM_HID_SendReport (USB_OTG_CORE_HANDLE *pdev, uint8_t *report, uint16_t len) { if (pdev->dev.device_status == USB_OTG_CONFIGURED ) { DCD_EP_Tx (pdev, HID_IN_EP, report, len); } return USBD_OK; } /** * @brief USBD_HID_GetCfgDesc * return configuration descriptor * @param speed : current device speed * @param length : pointer data length * @retval pointer to descriptor buffer */ static uint8_t *USBD_CUSTOM_HID_GetCfgDesc (uint8_t speed, uint16_t *length) { *length = sizeof (USBD_CUSTOM_HID_CfgDesc); return USBD_CUSTOM_HID_CfgDesc; } /** * @brief USBD_HID_DataIn * handle data IN Stage * @param pdev: device instance * @param epnum: endpoint index * @retval status */ uint8_t USBD_CUSTOM_HID_DataIn (void *pdev, uint8_t epnum) { /* Ensure that the FIFO is empty before a new transfer, this condition could be caused by a new transfer before the end of the previous transfer */ DCD_EP_Flush(pdev, HID_IN_EP); //if (epnum == 2) PrevXferDone = 1; return USBD_OK; } /** * @brief USBD_HID_DataOut * handle data IN Stage * @param pdev: device instance * @param epnum: endpoint index * @retval status */ uint8_t USBD_CUSTOM_HID_DataOut (void *pdev, uint8_t epnum) { /*查看接收数据长度 */ usbRcvCnt = USBD_GetRxCount(pdev, epnum); DCD_EP_PrepareRx(pdev,HID_OUT_EP, USB_HID_RcvBuf, 64); addData2RcvBuffer(USB_HID_RcvBuf, usbRcvCnt); return USBD_OK; } /** * @brief USBD_HID_EP0_RxReady * Handles control request data. * @param pdev: device instance * @param epnum: endpoint index * @retval status */ uint8_t USBD_CUSTOM_HID_EP0_RxReady(void *pdev) { return USBD_OK; }

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2 回答

USB官方代码中 USB Mass storage Standard Inquiry Data含义？

USB

周锦明回答时间：2020-5-13 08:10

谢谢

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4 回答

stm32F103 DMA模式采集AD数据问题

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yayayue 回答时间：2020-5-12 20:41

楼主的数据对齐是左对齐呀，数据转换的时候需要格外注意一下

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3 回答

AN2946文档对应的程序怎么找

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likang1202 回答时间：2020-5-12 19:27

可以查一下用的那个开发板，再去找对应的程序

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15 回答

STM32F407管脚重映射问题

STM32 STM32F4

wu1835195 回答时间：2020-5-12 17:29

感谢

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1 回答

Max Readble Current最大可读电流的作用

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butterflyspring 回答时间：2020-5-12 16:51

Nominal Current 电机的工作时候的额定电流值，电机铭牌上一般都有提供。 Max Readble Current 是指电流采样电路可读的最大电流值，由运放电路的采样电阻和放大倍数和偏置值决定，使用WB配置的时候会自动计算出。 Expected over-current 过流保护值，为了在电机失控的时候保护功率器件的电机的过流保护值，需要比电机的额定电流值要高。

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1 回答

ST MC WORKBENCH电机功率问题

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butterflyspring 回答时间：2020-5-12 16:50

有幸遇到相关人士，据说目前的版本是这样的，计划后面的版本会更新

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1 回答

如何在STM32CubeMX配置中更改LwIP的版本？

STM32 STM32CubeMX

nyszx 回答时间：2020-5-12 16:47

LwIP的版本是由芯片的firmware package 版本决定，具体版本可以查看“STM32Cube_FW_XXXX\Middlewares\Third_Party\LwIP\src\include\lwip”目录下的“init.h”文件。而firmware package 版本由CubeMX版本决定，这里以4.27和5.20版本为例，然后选择低版本的package，这里以F4为例，firmware package 版本选择STM32Cube_FW_F4_V1.10.0以下的Lwip版本是1.4.1,往上就是1.5.0版本。但是配置页面还是显示高版本的LwIP，不过不影响，如果要在这里配置LwIP参数，那就不知道会不会出问题了：生成代码后查看版本：虽然能CubeMX能选择firmware package 版本，但是不能保存，4.27的你下次打开就成了空白，5.20的就恢复成默认的最新版本了： CubeMX的BUG很多，估计用过的都已经习惯了。

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3 回答