[技术讨论]

从芯片到云的高效全链设计YoC平台概述

2022-3-9 07:38:54 4213 RISC-V 芯片

0 Yun On Chip (YoC) is a basic software platform based onRTOS. It provides SoC developers with unified low-level aRVM-CSI APIs as well as business developers with IoT edge solutions in different fields-oriented, including Bluetooth, Wi-Fi, voice, and multimedia. YoC provides an edge-cloud integrated development environment (IDE) called Jianchi CDK and system performance analysis tool, whichhelp developers simplifying development process and locating issues rapidly. Functional component building blocks can be deployed in a flexible manner, helping SoC vendors and developers quickly implement to create chip SDK . Combined with the functional services provided by OCC such as IoT device OTA upgrade and device provision in order to reduce the product development period and make the development of terminal product easier. Basic components YoC（Yun on Chip)--Open OS on IoT Since the loT chip market is relatively fragmented, breakthroughs in design methodology and infrastructure are required to solve the technical and productization problems in chips. To address this problem, T-Head developed YoC, which is a basic software platform. From the start of its establishment, YoC has been positioned as a full-stack IoT technology platform for efficient full-chain design from edge to cloud. The YoC platform is mainly composed of the following layers: Hardware specification layer: YoC platform provides standardized RVM-CSI APIs for hardware abstraction layer, which covers system service including chip peripheral drivers, RTOS functional service APIs, DSP and processor algorithm AI engine. Core service layer: YoC platform integrates core components such as RTOS, device management framework, security framework, low power consumption framework, and virtual file system. It also provides communication service components such as network protocol stack and Bluetooth protocol stack. Application component layer: YoC platform provides varies functional application components, which can address the technical requirements and software ecosystem of different application fields. Service framework layer: YoC platform integrates service frameworks in various application fields such as IoT cloud-based framework, wireless business framework, intelligent speech framework, vision AI framework, in order to reduce the development difficulty of application solutions in further. Features of YoC Unlike other development platforms, the YoC platform complies with the IEC 61508 industrial standard in terms of code. Embedded platforms can be optimized deeplyin terms of code density. More than 1000 test cases for automation testing are provided,toensure code quality. The AliOS-Things kernel is natively supported. In addition, the YoC platform has four major features: minimalist development, component building block development, rich IoT components, and domain-oriented software framework. The details are shown below: (1) Minimalist development Provides the integrated development environment (IDE)-Jianchi CDK Provides skilled and useful diagnostic tool which can support various detection of memory stomping, memory leaks, maximum stack depth, and so on Provides various product-level software components including file storage with power loss protection and load balancing (2) Component building block development The component repository evolves and iterates independently andsupports collaborative development by multiple people. The component hierarchy is intelligible, and functional components can be in flexible deployment. Edge-to-Cloud integrated visual programming. (3) Rich loT components Provide unified low-level RVM-CSI APIs independently research and developIoT operating system kernel Supports multiple network protocol stacks: ① TCP/IP protocol stack (LwIP) ② Socket adaptation layer (SAL) ③ Self-organizing network protocol (uMesh) ④ Supports communication hardware such as Wi-Fi, WLAN, NB-IoT, GPRS, and Bluetooth The AT instruction set developed by T-Head is supported. Support multiple IoT protocols a, such as Alink, MQTT, CoAP, and LwM2M. Rapid deployment from edge to cloud Support connectivity of various sensors. Provide Comprehensive security protection ① Support system and chip level security protection . ② Support Trusted execution environment (TEE) . Support secure OTA updates a. (4) Domain-oriented software framework Software framework for connectivity and migrating IoT data to the cloud Software framework for BLE/MESH application Software framework for IoT security application Software framework for intelligent voice applications Software framework for visual AI applications 文章转载自：平头哥芯片开放社区作者：未来开发者 0
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