LPA3399Pro User Manual

LPA3399Pro

• Preface
  • Overview
  • OS version
  • The current version of the document

Get started quickly

• Product Description
  • Feature Summary
• Interface Definition
  • Overall Interface Definition
• System Debugging
  • Serial Port Debugging
    • Choosing an Adapter
    • Hardware Connection
    • Windows Serial Port Tools
    • Linux Serial Port Tools
  • adb debugging
    • Introduction to Adb
    • Installing Adb on Windows
    • Installing Adb on Ubuntu
    • Common Adb Commands

Upgrade the firmware

• Updated firmware
  • Preface
  • Firmware acquisition
  • Upgrade method
  • Boot memory
  • Boot mode
    • Normal mode
    • Loader mode
    • MaskRom mode
• Firmware Upgrade Using USB Cable
  • Introduction
  • Preparation Tools
  • Preparing the Firmware
  • Installing the Burning Tool
    • Windows Operating System
    • Linux Operating System
  • Entering Upgrade Mode
    • Loader Mode
    • MaskRom Mode
  • Burning the Firmware
    • Windows Operating System
    • Linux Operating System
  • Common Issues
    • How to Force Enter MaskRom Mode
    • Analysis of Burning Failure
• MaskRom Mode
  • Introduction

Android development

• Android 9 system compilation
  • Hardware configuration
  • Software configuration
  • Compile the firmware
  • Package the firmware
  • Fully automatic compilation
  • Partition image

Linux development

• Ubuntu System Compilation
  • Hardware Configuration
  • Software Configuration
  • Compile SDK
• Debian System Compilation
  • Hardware Configuration
  • Software Configuration
  • Compile SDK
• Buildroot Compilation
  • Hardware Configuration
  • Software Configuration
  • Compile SDK
• Neardi Linux User Manual

Demo

• Android tools
  • RKDevicetest
  • RKUpdateService
  • RockVideoPlayer
• Linux tools
  • Number Writing Tool
  • PCBA testing tool
  • AI development
  • MPP Development Reference
• How to Compile rkmedia on a Linux Board
  • Introduction
  • Compile
    • Copy the Source Code
    • Install the Compilation Environment
    • Compile easymedia
    • Install easymedia
    • Modify imported files
    • Compile rkmedia

System customization

• Android system customization
  • Scope of application
  • Explanation of terms
  • Boot logo animation modification
    • Phase 1
    • Phase 2s
  • Default Screen Orientation Modification
    • Temporary Modification Method
    • Code Modification Method
  • Default Hide Status Bar
    • Temporary Modification Method
    • Code Modification Method
  • Default Hide Navigation Bar
    • Code Modification Method
  • Built-in APP Methods
    • Code Modification Method
    • Temporary Modification Method
    • Code Modification Method
  • Boot Start Application
    • Code Modification Method
  • Default Language Modification
    • Temporary Modification Method
    • Code Modification Method
  • Default Time Zone Modification
    • Temporary Modification Method
    • Code Modification Method
  • Default ROOT
    • Temporary Modification Method
    • Code Modification Method
  • Default System Time 24-Hour Format
    • Code Modification Method
  • Default Never Sleep
    • Code Modification Method
  • Setting Time Invalid
    • Code Modification Method
  • Default Open Network ADB
    • Temporary Modification Method
    • Code Modification Method
  • Default Setting OTG USB3.0 as Device Mode
    • Temporary Modification Method
    • Code Modification Method
  • Enable or Disable Installation of Unknown Apps
    • Code Modification Method
  • Enable or Disable Touch Sounds
    • Code Modification Method
  • Configure USB Camera as Front or Rear
    • Temporary Modification Method
    • Code Modification Method
• Linux System Customization
  • Applicability
  • 1.Modifying the rootfs Partition
    • 1.1.Viewing the Entire eMMC Partition Situation
    • 1.2.Unmounting the Mounted Partitions userdata and oem
    • 1.3.Deleting userdata and oem Partitions
    • 1.4.Adjusting the Size of the rootfs Partition
    • 1.5.Activating the rootfs Partition
  • 2.Enabling systemd in buildroot
    • 2.1.Clearing the Cache
    • 2.2.Selecting Configuration
    • 2.3.Configuring systemd
    • 2.4.Saving the Configuration
    • 2.5.Checking if the Configuration is Effective
    • 2.6.Compiling the Firmware
    • 2.7.Verifying if systemd is Working

Accessories

• cameramodule
• Display module
• Communication module

Faqs

• FAQs
  • How to manually switch HDMI 4K resolution
    • Android System
  • Is there an issue when connecting a national standard headphone to the 3.5mm jack?
  • What to do if the device is booting abnormally and keeps restarting?
  • What are the default username and password?
    • Ubuntu20.04/Ubuntu22.04 System
  • Writing tool to write SN, MAC address
    • Windows Method
  • In the Ubuntu system, if there is no sound after plugging in headphones, how to deal with it?
  • How to deal with system lag?
  • How to capture system LOG?
    • Android System

Release Notes

• Version 1.3.3