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AN664

更新时间： 2022-04-06 13:39:25

品牌	Logo	应用领域
芯科 - SILICON		/
页数	文件大小	规格书
18页	305K
描述
PRECISION32â¢ CMSIS AND HAL USERâS GUIDE

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AN664 数据手册

AN664

PRECISION32™ CMSIS AND HAL USER’S GUIDE

1. Introduction

CMSIS is the Cortex Microcontroller Software Interface Standard, and the Hardware Access Layer (HAL) is a

defined part of this standard.

The HAL provides an access layer for the SiM3xxxx device registers. The functions and macros are non-blocking

and simple; they cannot return error codes, so they are designed to never fail. The HAL is designed to replace the

individual bit field accesses of the module with a function name that describes the action the bit is controlling.

Note: HAL functions and macros are not designed to be thread-safe. These routines do not disable interrupts during non-

monotonic register modifications.

The HAL is one layer above the hardware and is the only code that accesses the registers directly. More complex

firmware systems like a Real Time Operating System (RTOS) or code example call the HAL and CMSIS routines.

Figure 1 shows the Precision32™ firmware layer block diagram.

CODE EXAMPLES

APPLICATION

si32Library

Callback

RTOS

CMSIS CoreSupport

from ARM

CMSIS

HAL from Silicon Labs

HARDWARE

Figure 1. Firmware Layer Block Diagram

2. Relevant Documentation

Precision32 Application Notes are listed on the following website: www.silabs.com/32bit-appnotes.

AN668: Precision32™ Software Development Kit (SDK) Code Examples Overview

AN670: Getting Started with the Silicon Labs Precision32™ AppBuilder

AN672: Precision32™ si32Library Overview

AN673: Precision32™ Software Development Kit Overview

AN675: Precision32™ Development Suite Overview

Rev. 0.2 3/12

AN664

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