STM32Cube固件架构，一些概念求解答

Soitgoes

请问什么是HAL driver, BSP driver, LL driver, middleware components, middleware stack，求解释这些概念和彼此联系，谢谢大佬~

高成

你是没看HAL 库的API指南吧，下面是我复制的
The HAL driver layer provides a generic multi-instance simple set of APIs (application programming
interfaces) to interact with the upper layer (application, libraries and stacks).
The HAL driver APIs are split into two categories: generic APIs which provide common and generic
functions for all the STM32 series and extension APIs which include specific and customized functions
for a given line or part number. The HAL drivers include a complete set of ready-to-use APIs which
simplify the user application implementation. As an example, the communication peripherals contain
APIs to initialize and configure the peripheral, manage data transfers in polling mode, handle interrupts
or DMA, and manage communication errors.
The HAL drivers are feature-oriented instead of IP-oriented. As an example, the timer APIs are split into
several categories following the IP functions: basic timer, capture, pulse width modulation (PWM), etc..
The HAL driver layer implements run-time failure detection by checking the input values of all functions.
Such dynamic checking contributes to enhance the firmware robustness. Run-time detection is also
suitable for user application development and debugging.
The LL drivers offer hardware services based on the available features of the STM32 peripherals. These
services reflect exactly the hardware capabilities and provide atomic operations that must be called
following the programming model described in the product line reference manual. As a result, the LL
services are not based on standalone processes and do not require any additional memory resources to
save their states, counter or data pointers: all operations are performed by changing the associated
peripheral registers content. Contrary to the HAL, the LL APIs are not provided for peripherals for which
optimized access is not a key feature, or for those requiring heavy software configuration and/or
complex upper level stack (such as FSMC, USB, SDMMC).
UM1850：Description of STM32F1 HAL and Low-layer drivers

宇智波白

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Soitgoes

高成 发表于 2019-11-27 15:23
你是没看HAL 库的API指南吧，下面是我复制的
The HAL driver layer provides a generic multi-instance si ...

谢谢~，后面的middleware，请问您了解吗

Soitgoes

@正点原子

正点原子

Soitgoes 发表于 2019-11-28 09:47
@正点原子

从头开始看HAL库，看MDK介绍。

candylife9

Soitgoes 发表于 2019-11-28 09:45
谢谢~，后面的middleware，请问您了解吗

middleware就是一些第三方写的软件包，比如freertos,fatfs等。

candylife9

这个你不用看啊，你会配置就行了，反正最后就是生成一个keil的工程，什么HAL,BSP,MIDDLEWARE之类的只是工程里面的一个文件夹名称，里面就是放了一些分类的源文件而已。