【TDA2x学习】6、Vision SDK目录结构及常见FAQ

VISION SDK是TI的ADAS软件开发平台,基于'Links and Chains'框架,支持视频处理和分析。目录包括核心SDK(links_fw)和演示应用。常见问题涉及Link运行核心、执行步骤验证、多邮箱使用场景以及何时需要重新编译。

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VISION SDK是一个多处理器的ADAS-SoCs的TI系列软件开发平台。软件框架允许用户创建不同的ADAS应用程序数据流,包括视频捕获、视频预处理、视频分析算法和视频显示。该框架具有ADAS数据流样本,在ADAS SoC中运行不同的cpu和硬件加速器,并向客户展示如何在SoC中有效地使用不同的子系统。

VISION SDK基于一个名为“链接和链”(“Links and Chains”)的框架。连接(link)是视频数据流中的基本处理步骤。链接由一个与消息框(message box)耦合的操作系统线程(使用操作系统信号量实现)组成。由于每个链接作为单独的线程运行,因此链接可以彼此并行运行。与链接关联的消息框允许用户应用程序以及其他链接与该链接对话。该链接实现了一个特定的接口,该接口允许其他链接与该链接交换视频帧和/或比特流。

Link API允许用户创建、控制和连接链接。Link API可以与不同处理器上的控制链接进行对话。Link API的用户不必担心底层处理器间的通信细节

链接的连接称为链(chains)。在指定为主机CPU的处理器上创建链(TDA2xx的情况下为IPU1-M4-0,ADAS SOC的TDA3xx系列)


1、Vision Software Development Kit (Vision SDK) 可以大致分为以下两类:

  • Core SDK Framework (links_fw)【核心SDK构架】
  • Demo Application (apps)【演示应用程序】

### VehicleProperty in Automotive Software Development In automotive software development, `VehicleProperty` refers to a set of parameters that define various attributes and characteristics of the vehicle's systems and components. These properties can be accessed through APIs designed specifically for interacting with different parts of the car’s electronic control units (ECUs). This allows developers to retrieve information about specific aspects such as engine status, battery level, tire pressure, etc., which are crucial for implementing advanced driver assistance systems (ADAS), infotainment features, and other connected services. For instance, when working within NVIDIA DRIVE platforms, one might find configurations related to these properties under paths similar to those mentioned previously[^3]. Developers often utilize virtual prototypes during early stages of product lifecycle management because they allow simultaneous hardware-software co-development without requiring actual physical devices being available yet[^1]. Here is how you could interact with some hypothetical `VehicleProperty` using Python-like pseudocode: ```python from automotive_api import VehiclePropertyManager # Initialize manager object manager = VehiclePropertyManager() # Get current value of a particular property e.g., Battery Level battery_level = manager.get_property('BATTERY_LEVEL') print(f"Battery Level: {battery_level}%") # Set new values for multiple properties simultaneously updates = { 'ENGINE_STATUS': True, 'TIRE_PRESSURE_FRONT_LEFT': 30.5, } manager.set_properties(updates) # Monitor changes over time via subscription mechanism def on_change(prop_name, old_val, new_val): print(f"{prop_name} changed from {old_val} to {new_val}") subscription_id = manager.subscribe_to_changes(on_change) ```
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