基于LPC845的简单四足机器人设计.zip

1 Overview

The MCUXpresso Software Development Kit (SDK) provides

comprehensive software support for Kinetis and LPC

Microcontrollers. The MCUXpresso SDK includes a flexible

set of peripheral drivers designed to speed up and simplify

development of embedded applications. Along with the

peripheral drivers, the MCUXpresso SDK provides an

extensive and rich set of example applications covering

everything from basic peripheral use case examples to full

MCUXpresso SDK homepage MCUXpresso-SDK: Software

Development Kit for MCUXpresso.

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Document Number: MCUXSDKGSUG

User's Guide

Rev. 10, 06/2019

Getting Started with MCUXpresso

SDK

Contents

1 Overview................................ ................................ 1

6 Run a demo using Arm® GCC............................. 38

7 MCUXpresso Config Tools...................................50

8 MCUXpresso IDE New Project

Wizard................................................................... 51

9 Appendix A - How to determine COM

port.........................................................................51

10 Appendix B - Default debug interfaces ................53

11 Appendix C - Updating debugger

firmware................................................................55

12 Revision history.................................................... 57

Figure 1. MCUXpresso SDK layers

2

MCUXpresso SDK board support folders

MCUXpresso SDK board support provides example applications for NXP development and evaluation boards for Arm

• cmsis_driver_examples: Simple applications intended to concisely illustrate how to use CMSIS drivers.

• demo_apps: Full-featured applications intended to highlight key functionality and use cases of the target MCU. These

applications typically use multiple MCU peripherals and may leverage stacks and middleware.

• driver_examples: Simple applications intended to concisely illustrate how to use the MCUXpresso SDK’s peripheral

drivers for a single use case. These applications typically only use a single peripheral, but there are cases where

multiple are used (for example, SPI conversion using DMA).

• emwin_examples: Applications that use the emWin GUI widgets.

• rtos_examples: Basic FreeRTOS

OS examples showcasing the use of various RTOS objects (semaphores, queues,

and so on) and interfacing with the MCUXpresso SDK’s RTOS drivers

Each <board_name> folder in the boards directory contains a comprehensive set of examples that are relevant to that specific

piece of hardware. Although we use the hello_world example (part of the demo_apps folder), the same general rules apply to

any type of example in the <board_name> folder.

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In the hello_world application folder you see the following contents:

All files in the application folder are specific to that example, so it is easy to copy and paste an existing example to start

developing a custom application based on a project provided in the MCUXpresso SDK.

The main areas of the MCUXpresso SDK tree used in all example applications are:

• devices/<device_name>: The device’s CMSIS header file, MCUXpresso SDK feature file and a few other things.

• devices/<device_name>/cmsis_drivers: All the CMSIS drivers for your specific MCU.

• devices/<device_name>/drivers: All of the peripheral drivers for your specific MCU.

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• devices/<device_name>/<tool_name>: Toolchain-specific startup code. Vector table definitions are here.

• devices/<device_name>/utilities: Items such as the debug console that are used by many of the example applications.

• devices/<devices_name>/project template

For examples containing middleware/stacks or an RTOS, there are references to the appropriate source code. Middleware

source files are located in the middleware folder and RTOSes are in the rtos folder. Again, the core files of each of these are

shared, so modifying them could have potential impacts on other projects that depend on them.

3 Run a demo using MCUXpresso IDE

Every time MCUXpresso IDE launches, it prompts the user to select a workspace location. MCUXpresso IDE is built on top

of Eclipse, which uses workspace to store information about its current configuration, and in some use cases, source files for

the projects in the workspace. The location of the workspace can be anywhere, but it is recommended that the workspace be

outside of the MCUXpresso SDK tree.

To build an example application, follow these steps.

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click the “Next” button.

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