STM32F10xxx USBv3.3固件库全功能开发指南

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本篇文档是STM32F10xxx USBv3.3版本的固件库英文说明手册，发布日期为2009年11月，文档编号为DocID13465Rev8。该手册详细介绍了STM32F10xxx USB-FS-Device Development Kit，这是一套完整的硬件和软件包，旨在支持STM32F10xxx系列微控制器家族，特别针对USB Full-Speed (FS) 设备功能进行开发。 STM32F10xxx USB-FS-Device Library 是核心组件，涵盖了所有与默认端点和标准请求相关的处理流程，为开发者提供了实现各种USB传输类型（控制、中断、批量和异步）的基础。此库的目标是帮助用户通过至少一个预置的固件示例实现USB数据传输。手册详细列出了以下几个主要示例和演示项目： 1. **Device Firmware Upgrade (DFU) Demo** - 控制传输类型的示例，用于设备固件升级。 2. **Joystick Mouse Demo** - 利用中断传输实现鼠标功能，通过模拟输入设备操作。 3. **Custom HID Demo** - 同样基于中断传输的自定义Human Interface Device (HID) 示例，可能包括键盘或游戏手柄等。 4. **Mass Storage Demo** - 使用批量传输实现文件系统访问，如U盘或外部存储设备。 5. **Virtual COM Port** - 结合中断和批量传输，提供虚拟串口功能，便于与电脑通信。 6. **USB Voice Speaker Demo (USB Speaker)** - 异步传输的应用实例，可能是一个简单的音频播放设备。 7. **USB Audio Streaming Demo** - 进一步展示了异步传输在音频流处理中的应用，用于实时音频数据传输。整个开发工具包旨在简化USB设备开发过程，并通过这些全面的示例和演示，帮助开发者快速上手并理解不同类型的USB传输模式。此外，文档还包含详细的目录结构和内容概述，便于用户查找所需的信息。在开发过程中，遵循文档提供的指南和设计，可以确保STM32F10xxx微控制器的USB功能得到充分利用。

STM32F10xxx USB-FS-Device firmware library UM0424

14/82 Doc ID 13465 Rev 8

1.2.2 usb_int (.h , .c)

The usb_int module handles the correct transfer interrupt service routines; it offers the link

between the USB device protocol events and the library.

The STM32F10xxx USB-FS_Device peripheral provides two correct transfer routines:

● Low-priority interrupt: managed by the function CTR_LP() and used for control,

interrupt and bulk (in simple buffer mode).

● High-priority interrupt: managed by the function CTR_HP() and used for faster transfer

mode like Isochronous and bulk (in double buffer mode).

1.2.3 usb_mem (.h , .c)

The usb_mem copies a buffer data from the user memory area to the packet memory area

(PMA) and vice versa. It provides two differents functions:

void UserToPMABufferCopy(uint8_t *pbUsrBuf,uint16_t wPMABufAddr, uint16_t wNBytes);

void PMAToUserBufferCopy(uint8_t *pbUsrBuf,uint16_t wPMABufAddr, uint16_t wNBytes);

Where:

–

pbUsrBuf is the pointer to the user memory area generally in the product’s SRAM.

–

wPMABufAddr is the address in PMA ( 512-byte packet memory area dedicaded to

USB).

–

wNBytes is the number of bytes to be copied.

1.3 OTG-FS_Device peripheral interface

Tab le 3 presents the OTG-FS_Device peripheral interface modules:

1.3.1 otgd_fs_dev(.h, .c).

The otgd_fs_dev module provides the main high layer functions for handling the OTG-

FS_Device peripheral in device mode. It also contains the main functions for handling

endpoints.

The main functions are listed in Ta bl e 4 :

Table 3. OTG-FS_Device peripheral interface modules

File Description

otgd_fs_dev (.h , .c) OTG-FS_Device device mode high-layer management

otgd_fs_int (.h , .c) OTG-FS_Device interrupt handlers

otgd_fs_pcd (.h , .c) OTG-FS_Device device mode low-layer management

otgd_fs_cal (.h , .c) OTG-FS_Device peripheral control and status management (low layer).

otgd_fs_regs.h OTG-FS_Device peripheral register definitions

UM0424 STM32F10xxx USB-FS-Device firmware library

Doc ID 13465 Rev 8 15/82

1.3.2 otgd_fs_int(.h, .c)

The otgd_fs_int module handles the different interrupt service routines generated by the

OTG-FS_Device peripheral. It provides the link between the USB protocol events and the

library core.

The STM32F10xxx OTG-FS_Device peripheral provides interrupt routines as listed in

Tab le 5 :

Table 4. otgd_fs_dev functions

Function Description

void OTGD_FS_Dev_Init(void)

Resets and initializes all the OTG-

FS_Device peripheral and initializes

endpoint 0.

void OTG_DEV_EP_Init(uint8_t bEpAdd, uint8_t

bEpType, uint16_t wEpMaxPackSize)

Configures and enables the selected

endpoint (this function is not used for

endpoint 0).

void OTGD_FS_Dev_Connect(void)

Connects the OTG-FS_Device

peripheral through the internal

integrated pull-up resistors

void OTGD_FS_Dev_Disconnect(void)

Disconnects the OTG-FS_Device

peripheral through the internal

integrated pull-up resistors

uint32_t OTGD_FS_GetEPTxStatus(uint8_t bEpNum)

Returns the transmitting status of the

selected endpoint (valid, stall, NaK,

disable)

uint32_t OTGD_FS_GetEPRxStatus(uint8_t bEpNum)

Returns the receiving status of the

selected endpoint (valid, stall, NaK,

disable)

void OTGD_FS_SetEPTxStatus(uint8_t bEpNum,

uint32_t Status)

Configure a selected transmitting status

for the selected endpoint (valid, stall,

NaK, disable)

void OTGD_FS_SetEPRxStatus(uint8_t bEpNum,

uint32_t Status)

Configure a selected receiving status

for the selected endpoint (valid, stall,

NaK, disable)

Table 5. otgd_fs_int functions

Function Description

uint32_t OTGD_FS_HandleInEP_ISR(void); Handles the IN endpoint interrupts

uint32_t OTGD_FS_HandleOutEP_ISR(void); Handles the OUT endpoint interrupts

uint32_t OTGD_FS_HandleSof_ISR(void); Handles the Start Of Frame interrupt

uint32_t

OTGD_FS_HandleRxStatusQueueLevel_ISR(void);

Handles the Rx Status Queue level

interrupt (data received in the internal

USB RAM)

uint32_t OTGD_FS_HandleEnumDone_ISR(void);

Handles the Enumeration Done

interrupt

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