readme: Ubuntu 22.04 env setup
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README.md
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README.md
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# 项目简介
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- Milk-V Duo是一个基于CV1800B芯片的超紧凑嵌入式开发平台。它可以运行Linux和RTOS,为专业人士、工业ODM厂商、AIoT爱好者、DIY爱好者和创作者提供了一个可靠、低成本和高性能的平台。
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## 硬件参数
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- 处理器: CVITEK CV1800B (C906@1Ghz + C906@700MHz)
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- 内存: 64MB
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- 网口: 10/100Mbps 以太网 (需外接扩展板)
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<br>
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# SDK目录结构
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# 快速开始
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## 准备编译环境
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- 使用本地的Ubuntu系统,推荐 `Ubuntu 20.04 LTS` (也可以使用虚拟机中的Ubuntu系统、Windows中WSL安装的Ubuntu、基于Docker的Ubuntu系统)
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- 使用本地的Ubuntu系统,推荐 `Ubuntu 20.04 LTS`
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<br>
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(也可以使用虚拟机中的Ubuntu系统、Windows中WSL安装的Ubuntu、基于Docker的Ubuntu系统)
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- 安装串口工具: `mobarXterm` 或者 `Xshell` 或者其他
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- 安装编译依赖的工具:
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### Ubuntu 20.04 LTS 下需要安装的工具
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安装编译依赖的工具:
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```
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sudo apt install pkg-config build-essential ninja-build automake autoconf libtool wget curl git gcc libssl-dev bc slib squashfs-tools android-sdk-libsparse-utils android-sdk-ext4-utils jq python3-distutils tclsh scons parallel ssh-client tree python3-dev python3-pip device-tree-compiler ssh cpio fakeroot libncurses5 flex bison libncurses5-dev genext2fs rsync unzip dosfstools mtools
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sudo apt install pkg-config build-essential ninja-build automake autoconf libtool wget curl git gcc libssl-dev bc slib squashfs-tools android-sdk-libsparse-utils jq python3-distutils scons parallel tree python3-dev python3-pip device-tree-compiler ssh cpio fakeroot libncurses5 flex bison libncurses5-dev genext2fs rsync unzip dosfstools mtools tclsh ssh-client android-sdk-ext4-utils
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```
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注意:`cmake` 版本最低要求 `3.16.5`
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@ -52,13 +61,36 @@ cmake version 3.16.3
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```
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wget https://github.com/Kitware/CMake/releases/download/v3.26.4/cmake-3.26.4-linux-x86_64.sh
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chmod +x cmake-3.26.4-linux-x86_64.sh
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sudo ./cmake-3.26.4-linux-x86_64.sh --skip-license --prefix=/usr/local/
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sudo sh cmake-3.26.4-linux-x86_64.sh --skip-license --prefix=/usr/local/
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```
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手动安装的`cmake`在`/usr/local/bin`中,此时用`cmake --version`命令查看其版本号, 应为
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```
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cmake version 3.26.4
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```
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### Ubuntu 22.04 LTS 下需要安装的工具
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安装编译依赖的工具:
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```
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sudo apt install pkg-config build-essential ninja-build automake autoconf libtool wget curl git gcc libssl-dev bc slib squashfs-tools android-sdk-libsparse-utils jq python3-distutils scons parallel tree python3-dev python3-pip device-tree-compiler ssh cpio fakeroot libncurses5 flex bison libncurses5-dev genext2fs rsync unzip dosfstools mtools tcl openssh-client cmake
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```
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另外,SDK中的mkimage命令依赖的libssl1.1,在Ubuntu22.04中已不存在,需要手动安装,以下两种方法都可以
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1. 补源安装
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```
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echo "deb http://security.ubuntu.com/ubuntu focal-security main" | sudo tee /etc/apt/sources.list.d/focal-security.list
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sudo apt update
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sudo apt install libssl1.1
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```
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2. 手动下载deb包安装
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```
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wget http://security.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.1-1ubuntu2.1~18.04.23_amd64.deb
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sudo dpkg -i libssl1.1_1.1.1-1ubuntu2.1~18.04.23_amd64.deb
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```
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<br>
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## 获取SDK
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```
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git clone https://github.com/milkv-duo/duo-buildroot-sdk.git
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@ -74,6 +106,19 @@ cd duo-buildroot-sdk/
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*注: 第一次编译会自动下载所需的工具链,大小为840M左右,下载完会自动解压到SDK目录下的`host-tools`目录,下次编译时检测到已存在`host-tools`目录,就不会再次下载了*
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如有需要分步编译,可依次输入如下命令
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```
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export MILKV_BOARD=milkv-duo
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source milkv/boardconfig-milkv-duo.sh
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source build/milkvsetup.sh
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defconfig cv1800b_milkv_duo_sd
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clean_all
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build_all
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pack_sd_image
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```
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生成的固件位置: `install/soc_cv1800b_milkv_duo_sd/milkv-duo.img`
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## SD卡烧录
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> 注意: 将镜像写入TF卡会擦除卡中原有数据,记得在烧录前备份重要的数据!!!
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## 开机
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- 将烧录好镜像的TF卡插入 Milk-V Duo 的TF卡槽中
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- 接好串口线
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- 接好串口线(可选)
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- 将平台上电,Duo会正常开机进入系统
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- 串口工具中可以看到开机日志,进系统后可通过串口登入终端,执行Linux下的相关命令
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- 如有接串口线,在串口工具中可以看到开机日志,进系统后可通过串口登入终端,执行Linux下的相关命令
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### 登陆到Duo终端的方法
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- 通过串口线
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- 通过USB网卡(RNDIS)方式
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- 通过以太网接口(需要扩展板支持)
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登陆Duo终端的用户名和密码分别为
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```
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root
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milkv
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```
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### 禁用LED闪烁
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上电后LED会自动闪烁,这个是通过开机脚本实现的,如果需要禁用LED闪烁功能,在Duo的终端中执行:
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```
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mv /mnt/system/blink.sh /mnt/system/blink.sh_backup && sync
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```
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也就是将LED闪烁脚本改名,重启Duo后,LED就不闪了
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<br>
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如果需要恢复LED闪烁,再将其名字改回来,重启即可
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```
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mv /mnt/system/blink.sh_backup /mnt/system/blink.sh && sync
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```
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<br>
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@ -99,7 +167,20 @@ cd duo-buildroot-sdk/
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2. 为什么查看RAM只显示28M?
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因为有一部分RAM被分配绐了 [ION](https://github.com/milkv-duo/duo-buildroot-sdk/blob/develop/build/boards/default/dts/cv180x/cv180x_default_memmap.dtsi#L15),您可以修改这个 [ION_SIZE](https://github.com/milkv-duo/duo-buildroot-sdk/blob/develop/build/boards/cv180x/cv1800b_milkv_duo_sd/memmap.py#L43) 的值然后重新编译生成固件.
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因为有一部分RAM被分配绐了 [ION](https://github.com/milkv-duo/duo-buildroot-sdk/blob/develop/build/boards/default/dts/cv180x/cv180x_default_memmap.dtsi#L15),是在使用摄像头跑算法时需要占用的内存。如果不使用摄像头,您可以修改这个 [ION_SIZE](https://github.com/milkv-duo/duo-buildroot-sdk/blob/develop/build/boards/cv180x/cv1800b_milkv_duo_sd/memmap.py#L43) 的值为`0`然后重新编译生成固件
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<br>
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## 芯片原厂一些资料的链接
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- CV181x/CV180x MMF SDK 开发文档汇总
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<br>
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[https://developer.sophgo.com/thread/471.html](https://developer.sophgo.com/thread/471.html)
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- CV系列芯片 TPU SDK 开发资料汇总
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<br>
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[https://developer.sophgo.com/thread/473.html](https://developer.sophgo.com/thread/473.html)
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<br>
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