DSP/BIOS内核技术概述：构建实时DSP应用的关键

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"TI DSP/BIOS Kernel Technical Overview" TI DSP/BIOS 是一款专为开发者构建数字信号处理（DSP）应用程序并管理应用资源而设计的实时运行时内核。该内核通过提供实时运行时服务，扩展了DSP指令集，构建了实时DSP应用的基础架构或基础设施。它与TI的Code Composer Studio集成开发环境（IDE）紧密配合，以支持以下功能： 1. **DSP/BIOS配置工具**：开发者可以使用此工具选择和配置应用所需的基石模块和内核对象，确保应用的基础结构符合需求。 2. **CCStudio插件实用程序**：为用户提供对DSP/BIOS内核对象的查看功能，增强了代码调试和理解。 3. **实时分析特性**：通过主机端工具，支持对DSP/BIOS内核的实时分析，有助于性能调优和故障排查。在应用开发周期中，DSP/BIOS内核起着核心作用，特别是在创建一个实时DSP环境中。这样的环境对于需要精确时间控制和高效资源管理的复杂系统至关重要。 **实时DSP环境**： - 开发DSP/BIOS应用程序时，首先需要考虑的是如何构建一个能够满足严格时间约束的实时环境。这包括设计任务调度、中断处理和同步机制。 **DSP/BIOS配置工具**： - 这个工具是开发过程中的关键组成部分，允许开发者定义任务、队列、信号量等内核对象，以及设置优先级和调度策略。通过这个工具，可以定制内核以适应特定应用的需求。 **应用开发流程**： - 开发者使用DSP/BIOS配置工具来规划和定义应用的结构，然后利用编译器和链接器将这些配置转化为可执行代码。 - 内核的实时分析特性使开发者能够在调试阶段监测任务执行、内存使用和系统性能，从而进行优化。 TI DSP/BIOS内核是构建高效、可靠的实时DSP应用程序的基础，通过其丰富的服务和与IDE的深度集成，简化了开发过程，并提供了强大的分析工具，以确保应用的性能和稳定性。

SPRA780

DSP/BIOS Kernel Technical Overview

Developers use the DSP/BIOS configuration tool to select which DSP/BIOS modules they will

use in their application; they may declare and configure objects from these modules as well.

This pre-creates DSP/BIOS objects to save memory, and pre-validates the configuration

parameters. The configuration tool generates four output files:

• programcfg.sxx DSP/BIOS Assembly source file. This file is linked with the application.

• programcfg_c.c DSP/BIOS source file for Initialization of Chip Support Library (CSL).

• programcfg.h DSP/BIOS header file for definition of extern objects.

• programcfg.hxx DSP/BIOS Assembly header file. This header file is included by the

programcfg.s62 file.

• programcfg.cmd Linker command file. Used when linking the executable file. This file

defines DSP/BIOS-specific link options, object names, and generic data sections for DSP

programs (e.g., .text, .bss, .data, etc.).

• program.cdb Stores configuration settings. This file is created by the Configuration

Tool, and used by both the Configuration Tool and the DSP/BIOS plug-ins.

For the C programmer, special header files included during program compilation define the

DSP/BIOS APIs within the context of the language. Alternative versions of many of the APIs

support direct use of DSP/BIOS services from assembly language programs using an optimized

set of macros.

After compilation or assembly, the standard TMS320 linker binds the selected DSP/BIOS

services with the application into an executable program image (see Figure 2). The selected

modules bind with the target application program, and may be located anywhere within the

memory space of the target DSP platform, either in RAM or in ROM. The Configuration Tool

provides the interface to locate the memory sections.

2.1.1 DSP/BIOS Configuration Tool

The DSP/BIOS Configuration Tool tightly integrates with CCStudio. This tool enables developers

to select and deselect kernel modules, and control a wide range of configurable parameters

accessed by the DSP/BIOS kernel at run-time, as shown in Figure 3. A file of data tables

generated by the tool ultimately becomes an input to the program linker.

The DSP/BIOS Configuration Tool (see Figure 3) serves as a special-purpose visual editor for

creating and assigning attributes to individual run-time kernel objects (threads, streams, etc.)

used by the target application program in conjunction with DSP/BIOS API calls. The

Configuration Tool provides developers the ability to statically declare and configure DSP/BIOS

kernel objects during program development, rather than during program execution. Declaring

these kernel objects through the Configuration Tool produces static objects, which exist for the

duration of the program. It also allows dynamic creation and deletion for many of the kernel

objects during program execution. However, dynamically created objects require additional code

to support the dynamic operations. Statically-declared objects minimize memory footprint, since

they do not include the additional create code.

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DSP/BIOS内核技术概述：构建实时DSP应用的关键

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