Texas Instruments PurePath Studio组件开发白皮书

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“ComponentDevelopmentWhitepaper”是关于Texas Instruments的PurePath Studio组件开发的文档，主要针对使用PurePath Studio自己开发组件的指导。在本文档中，作者E. Kuzemchak详细介绍了如何在PurePath Studio环境中进行组件开发。PurePath Studio是Texas Instruments提供的一款强大的工具，用于设计和调试复杂的数字信号处理(DSP)系统。这个白皮书涵盖了多个版本，从2006年6月的初始草案到2008年2月的更新，反映了组件开发技术的不断演进和改进。文档的主要内容包括： 1. **修订历史**：记录了每次版本更新的时间、版本号、变更描述以及作者。这表明文档经过多次修订和完善，包含了从2006年到2008年的最新进展。 2. **纯路径工作室(PurePath Studio)**：这是TI提供的一个集成开发环境(IDE)，专为数字信号处理应用设计，支持用户自定义组件开发，以满足特定的硬件和算法需求。 3. **组件开发**：文档详细阐述了如何在PurePath Studio中创建和配置自定义组件，包括组件的结构、功能、输入输出通道的设计，以及如何利用其内建的功能来实现延迟内存和动态I2C支持。 4. **新属性访问函数**：随着版本的升级，2.5版添加了新的属性访问函数，并对延迟属性的描述进行了更新，这提高了组件的灵活性和可编程性。 5. **特殊属性**：2.7版增加了关于特殊属性的信息，这些属性可能与特定组件的行为或性能优化有关。 6. **输入和输出通道信息**：2.8版更新了输入和输出通道的相关信息，这对于理解组件间的数据流和通信至关重要。 7. **示例代码**：例如，2.6版将PFC样本从PfcGeneric更改为PfcMixer，提供了实际应用中的组件实例，帮助开发者更好地理解和应用这些概念。通过这份白皮书，开发者可以学习到如何利用PurePath Studio的高级特性，创建和优化自己的组件，从而提升DSP系统的效能和效率。无论是对于新手还是经验丰富的开发者，这份文档都提供了宝贵的资源和指导。

PurePath Studio

Texas Instruments

Component Development

PurePath Studio Component Development Page 7 of 34

A component consists of the following items, which are described in further detail later.

• The Component XML defines all the information that the GDE needs to process the component. This

includes the component name, number of inputs and outputs, properties, and special tools for

processing the component. The Component XML is generated by the Component Publisher, described

in Section 4.

• The Component Help File (optional) provides additional information about the component that can be

displayed by the GDE. This documentation may describe the implementation of the component or

provide assistance in using the component in the GDE. The component help file format is described in

Section 9.

• Component Templates are the actual source code for the component. Templates may include DSP

assembly, 8051 C code, or any other source code format that can be used by the Code Generators.

Component templates are described in Section 3.

• A Process Flow Controller is a non-graphical plug-in to the GDE that controls the behavior of the

component during build and execution. Process Flow Controllers respond to changes in the component

properties and, during execution, communicate those changes to the EVM hardware via I²C. The

interfaces for building Process Flow Controllers are described in Section 6.

A Pop-up GUI is a custom pop-up interface created by the user to allow customization to the entry of

properties allowing calculations and manipulation to the values. Pop-up GUIs require .NET

programming and are considered an advanced feature of the component development process. This

process is defined in the Advanced Component Development Whitepaper. An example of a pop-up GUI

is in the biquad component, which has biquad coefficient values as properties. A user-friendly

configuration interface for biquad would resemble a filter design application.

Creating a component will always require creating a component XML with the Component Publisher and will

likely require component help files and component templates. Many components will also need a process

flow controller. Generic DLLs are used when no changes to the properties are required when sending values

to the EVM via I

C. Custom DLLs are used when properties sent to the I

C require modifications such as

calculations, look up tables, or other means. Advanced users may develop custom components utilizing

specialized pop-up GUIs, properties, or process flow controllers.

3. Component Templates

Component templates are text files provided by the component. They are used to generate the DSP or 8051

code for the audio application. Normally, templates are used to generate DSP assembly or 8051 C code,

although there is no restriction in the toolset on how the generated files may be used. Code templates may,

for example, be used to generate test data.

3.1 DSP Code Templates

DSP code templates are text files used by the GDE to produce DSP assembly code. DSP code templates should

use the extension .asmx while generated DSP code files use .asm.

Before writing the DSP code templates, it is important to understand how the DSP application is built.

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