Code Composer Studio v3.3 开发工具入门指南

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"Code Composer Studio Development Tools v3.3 是一款专用于嵌入式系统开发的集成开发环境（IDE），由TI（Texas Instruments）公司提供，适用于eXpressDSP技术。该指南旨在帮助用户快速入门，熟悉软件的各项功能，包括项目创建、编译构建、程序加载、基本调试以及目标机和主机的设置。" Code Composer Studio (CCS) 是一个强大的开发工具，主要服务于TI的微控制器（MCU）和数字信号处理器（DSP）平台。版本3.3提供了多个关键特性以支持高效开发流程： 1. **开发流程**：Code Composer Studio 提供了一种结构化的开发流程，包括项目创建、源代码编写、编译、调试和优化。开发者可以利用此工具进行高效的软件开发和硬件调试。 2. **快速入门**：为了帮助新用户快速上手，指南详细介绍了如何启动CCS IDE。用户可以通过点击图标来打开IDE，然后创建新的项目。此外，指南还涵盖了如何构建程序、加载程序到目标设备以及进行基本的调试步骤。 - **创建新项目**：用户可以在IDE中创建新项目，选择相应的设备和开发板，配置所需的编译器和链接器选项。 - **编译程序**：通过IDE的构建工具，用户可以编译源代码，检查错误和警告。 - **加载程序**：完成编译后，可以将程序下载到目标硬件进行测试。 - **基本调试**：CCS支持多种调试工具，如设置断点、单步执行、查看变量值、控制台输出和符号浏览器等，便于理解程序运行状态。 3. **目标机和主机设置**：这部分指导用户如何配置目标设备和主机环境，以确保正确的通信和调试连接。 - **目标设置**：这涉及到使用Code Composer Studio Setup Utility和Parallel Debug Manager来配置目标设备的连接参数，包括连接/断开硬件，以及查看状态栏信息。 - **主机IDE定制**：用户可以根据个人喜好自定义IDE的界面，包括颜色设定、键盘快捷键以及其他个性化设置，以提高开发效率。 4. **代码创建与项目配置**：在Code Composer Studio中，用户可以对项目进行详细配置，以满足特定的编译需求和优化目标。创建项目时，用户可以选择模板，指定处理器类型，以及添加源文件和库。 Code Composer Studio Development Tools v3.3 是一个全面的开发环境，为eXpressDSP开发者提供了从项目规划到调试的一站式解决方案。通过熟悉并掌握这个工具，开发者能够更有效地开发和调试针对TI DSP和MCU的嵌入式应用。

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2.1 Launching the Code Composer Studio Development Tools

2.1.1 Important Icons Used in Code Composer Studio

Launches Code Composer Studio

Rebuilds the project

Builds the project incrementally

Halts execution

Toggles breakpoint

Runs project

Single steps project

Step out

Step over

2.2 Creating a New Project

Launching the Code Composer Studio Development Tools

To launch Code Composer Studio IDE for the first time, click the icon (shown below) on your desktop. A

simulator is automatically configured by default. To configure Code Composer Studio for a specific target,

see Chapter 3 for more information.

These icons will be referred to throughout this manual.

Figure 2-1. Icons on the Code Composer Studio Toolbar

To create a working project, follow these steps:

1. If you installed Code Composer Studio in C:\CCStudio_v3.3, create a folder called practice in the

C:\CCStudio_v3.3\myprojects folder.

2. Copy the contents of C:\CCStudio_v3.3\tutorial\target\consultant folder to this new folder. Target refers

to the current configuration of Code Composer Studio. There is no default configuration, you must set

a configuration before starting Code Composer Studio. See Chapter 3 for more about Code Composer

Studio configurations.

3. Launch Code Composer Studio.

4. From the CCStudio Project menu, choose New.

5. In the Project Name field, type the project name (practice).

6. In the Location field, type or browse to the folder you created in step 1.

7. By default, Project Type is set as Executable (.out) and Target is set as the current configuration of

Code Composer Studio.

8. Click Finish. Code Composer Studio creates a project file called practice.pjt. This file stores your

project settings and references the various files used by your project.

9. Add files to the project by choosing Add Files to Project from the Project menu. You can also right-click

the project in the Project View window on the left and then select Add Files to Project.

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2.3 Building Your Program

2.4 Loading Your Program

2.5 Basic Debugging

2.5.1 Go to Main

2.5.2 Using Breakpoints

Building Your Program

10. Add main.c, DoLoop.c, and lnk.cmd (this is a linker command file that maps sections to memory) from

the folder you created. You may need to choose All Files from the Files of type dropdown box to view

all the types of files.

11. Next, choose Add Files to Project again and browse to the C:\CCStudio_v3.3\target\cgtools\lib\

directory and add the rts.lib file for your configured target.

12. You do not need to manually add any include files to your project, because the program finds them

automatically when it scans for dependencies as part of the build process. After you build your project,

the include files appear in the Project View.

Now that you have created a functional program, you can build it. Use the Project → Rebuild All function

the first time you build the project. An output window will show the build process and status. When the

build is finished, the output window will display Build complete 0 errors, 0 warnings.

The Rebuild All command is mainly used to rebuild the project when the project options or any files in the

project have changed. For further information, see Section 2.3 .

After the program has been built successfully, load the program by going to File → Load Program. By

default, Code Composer Studio IDE will create a subdirectory called Debug within your project directory

and store the .out file in it. Select practice.out and click Open to load the program.

Note: Remember to reload the program by choosing File → Reload Program if you rebuild the

project after making changes.

To see Code Composer Studio’s versatile debugger in action, complete the following exercises. For more

in-depth information, see Chapter 5 .

To begin execution of the Main function, select Debug → Go Main. The execution halts at the Main function

and you will notice the program counter (yellow arrow) in the left margin beside the function. This is called

the selection margin.

To set a breakpoint, place the cursor on the desired line and press F9. In addition, you can set the

breakpoint by selecting the Toggle Breakpoint toolbar button. When a breakpoint has been set, a red icon

will appear in the selection margin. To remove the breakpoint, simply press F9 or the Toggle Breakpoint

toolbar button again. You can also open the Breakpoints Manager (Debug → Breakpoints) to view all the

breakpoints, set new ones, or change the breakpoint action.

In main.c, set a breakpoint at the line: DoLoop(Input1, Input2, Weights, Output, LOOPCOUNT);As

execution was halted at the main function, you can press F5, select Debug → Run, or select the Run

toolbar button to run the program. Once execution reaches the breakpoint, it halts, as displayed in the

status bar at the bottom of the CCStudio window.

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2.5.3 Source Stepping

2.5.4 Viewing Variables

2.5.5 Output Window

2.5.6 Symbol Browser

2.6 Introduction to Help

Introduction to Help

Source stepping is only possible when program execution has been halted. Since you halted at the

breakpoint, you can now execute the program line by line using source stepping. Step into the DoLoop

function by selecting the Source-Single Step button on the side toolbar. Step through a few times to

observe the executions. The Step Over and Step Out functions are also available below the Single Step

button. Assembly stepping is also available. Whereas source stepping steps through the lines of code,

assembly stepping steps through the assembly instructions. For more information on assembly stepping,

see Section 5.2.1 .

In the debugging process, you should view the value of the variables to ensure that the function executes

properly. Variables can be viewed in the watch window when the CPU has been halted. The watch

window can be opened by selecting View → Watch Window. The Watch Locals tab shows all the relevant

variables in the current execution.

As you continue to Step Into the while loop, the values of the variables change through each execution. In

addition, you can view the values of specific variables by hovering the mouse pointer over the variable or

by placing the variables in the Watch1 tab. For more information on variables and watch windows, see

Section 5.2.4 .

The Output window is located at the bottom of the screen by default. It can also be accessed by

View → Output Window. By default, the printf function displays the same Output window, showing

information such as the contents of Stdout and the build log.

The symbol browser allows you to access all the components in your project with a single click. Select

View → Symbol Browser to open the window. The symbol browser has multiple tabs, including tabs for

Files, Functions, and Globals.

Expanding the tree in the Files tab shows the source files in your project. Double-clicking on files in the

Files or Functions tabs automatically accesses the file. The Globals tab allows you to access the global

symbols in your project.

For more information on the Symbol browser, see Section 5.2.10 .

You should now have successfully created, built, loaded, and debugged your first Code Composer Studio

program.

Code Composer Studio provides many help tools through the Help menu. Select Help → Contents to

search by contents. Select Help → Tutorial to access tutorials to guide you through the Code Composer

Studio development process.

Select Help → Web Resources to obtain the most current help topics and other guidance. User manuals

are PDF files that provide information on specific features or processes.

You can access updates and a number of optional plug-ins through Help → Update Advisor.

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3.1 Setting Up the Target

3.1.1 Code Composer Studio Setup Utility

3.1.1.1 Adding an Existing Configuration

Setting Up the Target

This section provides information on how to define and set up your target configuration for both single

processor and multiprocessor configurations, and how to customize several general IDE options.

The Setup utility allows you to configure the software to work with different hardware or simulator targets.

You must select a configuration in Setup before starting the Code Composer Studio IDE.

You can create a configuration using the provided standard configuration files, or create a customized

configuration using your own configuration files (see the online help and/or the tutorial). This example

uses the standard configuration files.

To create a system configuration using a standard configuration file:

1. Double-click on the Setup CCStudio desktop icon. The System Configuration dialog box appears.

2. From the list of Available Factory Boards, select the standard configuration that matches your system.

Your list of available boards will differ depending on your installation.

Determine if one of the available configurations matches your system. If none are adequate, you can

create a customized configuration (see the online help and/or the tutorial).

Figure 3-1. Standard Setup Configurations

3. Click the Add button to import your selection to the system configuration currently being created. The

configuration you selected now displays under the My System icon in the System Configuration pane

of the Setup window.

If your configuration has more than one target, repeat these steps until you have selected a

configuration for each board.

4. Click the Save & Quit button to save the configuration.

5. Click the Yes button to start the Code Composer Studio IDE with your configuration. You can now start

a project. See Chapter 4 of this book, or the online help and tutorial for more information.

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