AN4141 datasheet(7/42 Pages) STMICROELECTRONICS

7 / 42 page

DocID023425 Rev 2

7/42

AN4141

Why migrate from HAL to StdPeriph_Lib?

1.1.1

CMSIS description

As part of the CMSIS, ARM provides the following software layers, which are available for

various compiler implementations:

•

Core peripheral access layer: contains name definitions, address definitions and

helper functions to access core registers and peripherals. It also defines a device-

independent interface for RTOS kernels that includes debug channel definitions.

•

Device peripheral access layer: provides definitions for all device peripherals.

For a Cortex-Mx microcontroller system, CMSIS defines:

•

A common way of accessing peripheral registers and a common way of defining

exception vectors

•

A device-independent interface for RTOS kernels, including a debug channel

•

Interfaces for middleware components (TCP/IP stack, flash file system)

1.1.2

CMSIS structure

Figure 1 illustrates different layers for a CMSIS-based application.

Figure 1. CMSIS layer structure

Application code

Real-time

kernel

Middleware

components

Core peripheral

functions

Middleware access

functions

Device peripheral

functions

Peripheral register & interrupt vector definitions

Cortex

CPU

SysTick

RTOS kernel

timer

NVIC

nested vector

interrupt controller

Debug/Trace

interface

Other

peripherals

ai15990

AN4141 数据表(PDF) 7 Page - STMicroelectronics

AN4141 数据表(HTML) 7 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

数据表下载

链接网址

AN4141 数据表(PDF) 7 Page - STMicroelectronics

AN4141 数据表(HTML) 7 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

数据表 下载

链接网址

数据表下载