STM32CubeH7软件库使用教程：STM32H7xx固件开发指南

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"STM32H7系列单片机的STM32CubeH7软件库使用指南_ENV5_20190403.pdf详细介绍了如何使用STM32H7xx系列的官方软件包，包括固件库、驱动库以及板级支持包的开发说明。这份指南旨在帮助开发者降低开发难度、时间和成本，涵盖了STM32Cube的全部功能。" STM32Cube是意法半导体（STMicroelectronics）推出的一项创新项目，其目标是简化开发者的工作，通过减少开发工作量、时间和成本来提高效率。STM32Cube覆盖了整个STM32产品线。这个平台包含了一系列用户友好的软件开发工具，以支持从项目构思到实现的全过程： 1. **STM32CubeMX** 是一个图形化的软件配置工具，通过图形化向导自动生成C语言初始化代码，帮助用户快速配置芯片的外设和参数。 2. **STM32CubeProgrammer (STM32CubeProg)** 提供了图形化和命令行两种版本的编程工具，用于对STM32微控制器进行编程和调试。 3. **STM32CubeMonitor-Power (STM32CubeMonPwr)** 是一款监控工具，用于测量并优化MCU的功耗，帮助开发者优化能源效率。 STM32Cube还提供了一个全面的嵌入式软件平台，针对每个系列（如STM32CubeH7专为STM32H7系列设计）： 1. **STM32CubeHAL** 是STM32的抽象层嵌入式软件，确保在STM32产品系列间的最大可移植性。它提供了一套高级接口，允许开发者以统一的方式访问和控制各种STM32微控制器的功能。 2. **STM32Cube低层APIs** 专注于性能和代码尺寸，提供高度的硬件控制，以实现最佳的性能表现。 3. **一系列中间件组件** 包括实时操作系统(RTOS)、USB堆栈、TCP/IP协议栈、文件系统等，这些组件使开发者能够快速构建复杂的应用。此外，这份指南还包括STM32H7系列驱动库的使用说明，指导开发者如何利用这些库有效地驱动和控制芯片的各个外设，如GPIO、ADC、DAC、I2C、SPI、UART等。同时，板级支持包(BSP)提供了与开发板相关的配置和驱动，以便快速验证和调试代码。 STM32CubeH7软件库使用指南是STM32H7系列开发者的重要参考资料，它详细阐述了如何利用官方提供的工具和库进行高效开发，对于新手和经验丰富的开发者来说都具有极高的价值。

It allows linking the component driver to a specific board and provides a set of user-friendly APIs. The API

naming rule is BSP_FUNCT_Action(): ex. BSP_LED_Init(),BSP_LED_On()

The BSP is based on a modular architecture allowing an easy porting on any hardware by just implementing the

low level routines.

2.1.2 Hardware Abstraction Layer (HAL) and low-layer (LL)

The HAL layer provides the low level drivers and the hardware interfacing methods to interact with the upper

layers (application, libraries and stacks). It provides generic, multi instance and function-oriented APIs which

simplify the user application implementation by providing ready-to-use processes. As example, for the

communication peripherals (I2S, UART…), it includes APIs allowing to initialize and configure the peripheral,

manage data transfer based on polling, interrupt or DMA process, and handle communication errors that may

raise during communication. The HAL Drivers APIs are split in two categories:

• Generic APIs which provide common and generic functions to all the STM32 Series

• Extension APIs which provide specific and customized functions for a specific family or a specific part

number

• The low-layer APIs provide low-level APIs at register level, with better optimization but less portability. They

require a deep knowledge of MCU and peripheral specifications. The LL drivers are designed to offer a fast

light-weight expert-oriented layer which is closer to the hardware than the HAL. Contrary to the HAL, LL

APIs are not provided for peripherals where optimized access is not a key feature, or for those requiring

heavy software configuration and/or complex upper-level stack. The LL drivers feature:

– A set of functions to initialize peripheral main features according to the parameters specified in data

structures

– A set of functions used to fill initialization data structures with the reset values corresponding to each

field

– Function for peripheral de-initialization (peripheral registers restored to their default values)

– A set of inline functions for direct and atomic register access

– Full independence from HAL and capability to be used in standalone mode (without HAL drivers) – Full

coverage of the supported peripheral features.

• Dual Core implementation:

– The same HAL/LL drivers support both the single and dual core STM32H7 lines

◦ In the STM32H7 dual core devices all peripherals can be accessed in the same way by the two

cores (Cortex

-M7 and Cortex

-M4). It means there is no peripherals split or default allocation

between Cortex

-M7 and Cortex

-M4. For this reason the same peripheral HAL and LL drivers

are shared between the two cores.

◦ Furthermore, some peripherals ( mainly: RCC, GPIO, FLASH, PWR, HSEM..) have additional

dual core specific features:

• “DUAL_CORE” define is used to delimit code (defines , functions, macros.. ) available only

in dual core line.

• “CORE_CM4” define is used to delimit code where we a specific configuration/code portion

for Cortex

-M4 core

• “CORE_CM7” define is used to delimit code where we a specific configuration/code portion

for Cortex

-M7 core on a dual core line.

2.1.3 Basic peripheral usage examples

This layer contains the examples of the basic operation of the STM32H7 peripherals using either the HAL APIs as

well as the BSP resources.

2.2 Level 1

This level is divided into two sub-layers:

2.2.1 Middleware components

Middleware components are a set of libraries covering USB Host and Device Libraries, STemWin, TouchGFX,

LibJPEG, FreeRTOS, OpenAMP, FatFS, LwIP, mbedTLS, and PDM2PCM audio library. Horizontal interactions

between the components of this layer are performed directly by calling the feature APIs while the vertical

UM2204

Level 1

UM2204 - Rev 5

page 5/25

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