SDK Overview

GX8002 chip SDK, we call LVP, LVP full name is Lower-Power Voice Process.

1. Preface

LVP (Low Power Voice Processing) is a speech signal processing framework specially developed for the GX8002 chip. It runs on MCU and NPU, and mainly completes speech signal processing in various working modes, such as noise reduction mode, activation word recognition, etc. In addition, the LVP framework also implements raw voice data collection, voice broadcast, standby time statistics, dynamic frequency modulation and other functions.

2. Using SDK Guide

2.1 Introductory use

• Development board(Grus_Dev_V1.x), Please find our sales purchase development board.
• Build development environment: This document describes how to install the SDK toolchain and obtain the SDK code.
• Make the first Demo: This document introduces SDK compilation, burning and running through its own Demo.
• Serial recording: This document describes how to compile recording firmware using the SDK and how to record over a serial port.
• Rapid application development: This article introduces the SDK directory structure, GPIO configuration, gain adjustment, and application software (app) development.

2.2 Advanced use

• SDK software flow chart: This article introduces the software flow chart for the SDK, which requires some careful reading. Read this article to understand the SDK front and back software process.
• Memory distribution: This article describes the memory distribution for the GX8002 runtime.
• I2C access Guide: This paper introduces how to communicate with GX8002 through I2C bus.
• UART access Guide: This paper describes how to communicate with GX8002 through UART bus.
• OTA updates the migration guide over the serial port: This paper describes how to integrate uart_bootx_example in upper computer to OTA upgrade GX8002 chip through serial port.

2.3 Model compilation and deployment

• Understand NPU: Please read Overview of NPU and NPU compiler installed。
• NPU compiler is used: This article describes the use of the NPU compiler gxnpuc and some considerations for OP use.
• Examples of NPU compiler usage: This article uses MNIST as an example to introduce the use of gxnpuc. It needs to be read carefully.
• NPU model API deployment process: This article describes the API interface for invoking the NPU module.
• NPU model format description: NPU model format description,Be sure to read。
• NPU model deployment Guide: This article mainly explains how the software engineer role can deploy the model trained by the algorithm engineer role on the SDK. Suitable for third-party algorithm companies to read .

2.4 SDK_FAQ

• Dynamic adjustment frequency: This article describes how to call the API driver interface to adjust module frequency. Suitable for third-party algorithm companies to read .
• Dynamic frequency modulation APP introduction(lvp_app_kws_state_demo): This paper introduces how to implement dynamic frequency modulation in app.
• High precision microsecond delay instructions: This paper introduces how to use high precision delay in GX8002 and points for attention.
• GPIO analog Infrared instructions: This paper introduces the points to be paid attention to in GX8002 using GPIO to simulate infrared, the procedure and the code examples.