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README
Apache-2.0

device_espressif

介绍

目录
device/soc/espressif
├── esp32_wrover_ie                       # 芯片SOC名称
├── ...                                   # 芯片SOC名称
├── Kconfig.liteos_m.defconfig            # kconfig 默认宏配置
├── Kconfig.liteos_m.series               # esp系列soc配置宏
└── Kconfig.liteos_m.soc                  # soc kconfig配置宏

编译环境搭建包含如下几步:

  1. 环境搭建
  2. 获取源码
  3. 源码构建
  4. 在开发板中运行镜像

1.环境搭建

  1. esp-idf安装

    使用安装指导请参考:(https://docs.espressif.com/projects/esp-idf/zh_CN/release-v4.1/get-started/index.html)

    注:esp-idf安装可以跳过,当前已将生成好的bootloader.bin和partition-table.bin放入device\soc\espressif\esp32_wrover_ie\pack_tools文件夹中。

  2. esptool安装

    python -m pip install esptool
  3. hb工具安装

    a) 运行如下命令安装hb

    pip3 install build/lite

    b) 设置环境变量

    vim ~/.bashrc

    将以下命令拷贝到.bashrc文件的最后一行,保存并退出。

    export PATH=~/.local/bin:$PATH

    执行如下命令更新环境变量。

    source ~/.bashrc

    c) 执行"hb -h",有打印以下信息即表示安装成功:

    usage: hb
    
    OHOS build system
    
    positional arguments:
    {build,set,env,clean}
       build               Build source code
       set                 OHOS build settings
       env                 Show OHOS build env
       clean               Clean output
    
    optional arguments:
    -h, --help            show this help message and exit
  4. 编译镜像

    a) 生成bootloader.bin

    $ cd esp-idf
    $ ./install.sh
    $ ./export.sh
    $ cd examples/get-started/hello_world
    $ make menuconfig
    (关掉 Partition Table -> [*] Generate an MD5 checksum for the partition table 选项)
    $ make bootloader

    b) 生成分区表

    使用gen_esp32part.py脚本将用户自定义csv文件转换为对应bin文件,如:

    $ gen_esp32part.py partitions_user.csv partitions_user.bin --disable-md5sum

    esp32 csv文件可参考以下配置:

    nvs,data,nvs,0x9000,24K,
    phy_init,data,phy,0xf000,4K,
    factory,app,factory,0x10000,1M,

注:编译镜像可以跳过,当前已将生成好的bootloader.bin和partition-table.bin放入device\soc\espressif\esp32_wrover_ie\pack_tools文件夹中。

2.获取源码

代码获取

提示: 可以使用 repo 命令来获取源码。

下载好源码后通过下列指令下载开发板代码:

   $ repo init -u https://gitee.com/openharmony-sig/manifest.git -m devboard_espressif.xml --no-repo-verify
   $ repo sync -c
   $ repo forall -c 'git lfs pull'

3.源码构建

  1. 执行hb set命令并选择项目esp32_wrover_ie_demo

    $ hb set
  2. 进入kernel/liteos_m中执行make manuconfig选择Platform -> Chip -> qemu_xtensa_esp32,配置当前开发板。

    $ cd kernel/liteos_m/
    $ make menuconfig
  3. 执行hb clean && hb build命令构建产生 OHOS_Image 的可执行文件。

    $ hb clean && hb build
  4. 在构建完成之后,对应的可执行文件在主目录下:

    out/esp32_devkitc_v4/esp32_wrover_ie_demo/
  5. 在主目录下执行以下命令生成bin文件:

    esptool.py --chip esp32 elf2image --flash_mode dio --flash_freq 80m     \
     --flash_size 4MB -o out/esp32_devkitc_v4/esp32_wrover_ie_demo/OHOS_Image.bin out/esp32_devkitc_v4/esp32_wrover_ie_demo/OHOS_Image

4.在开发板中运行镜像

  1. 下载烧录工具

    烧录工具(Flash下载工具)链接:https://www.espressif.com/zh-hans/support/download/other-tools

  2. 使用烧录工具

    使用参考 https://docs.ai-thinker.com/esp_download 中 “不支持OTA” 的FLASH地址配置方式:

    a) 配置bootloader.bin在地址0x1000,配置partition-table.bin在地址0x8000,配置OHOS_Image.bin在地址0x10000。

    b) 配置SPI SPEED为40MHz,配置SPI MODE为DOUT,配置FLASH SIZE为8Mbit,波特率设置为115200。

    c) 点击START开始下载。

注1:如果没有手动生成bootloader.bin和partition-table.bin,可以直接使用device\soc\espressif\esp32_wrover_ie\pack_tools下的bootloader.bin和partition-table.bin。

注2:烧录用的bin文件需要按照3-4中的方法使用esptool.py工具生成。

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