0, ubuntu1804 environment installation is mainly the installation of esp-idf (SDK)

Installation Precautions:

Choose the esp-idf version instead of master, it is better to choose the latest release version

If the ubuntu source is slow, it is recommended to replace it with Tsinghua source

If the esp-idf versions are mixed, the compilation will fail, please delete and start again

The default source of ubuntu is extremely slow, waiting for the progress bar is a waste of life.

cp /etc/apt/sources.list   /etc/apt/sources.list-bak

vim   /etc/apt/sources.list 




######################################################################
# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse

# 预发布软件源，不建议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
######################################################################

apt update

apt upgrade

1. Download esp-idf (you can use the source of gitee or github) <Try to choose the release version! > <lastest is really easy to roll over>

Select the release v4.2 version of esp-idf

git clone -b v4.2 --recursive  https://gitee.com/EspressifSystems/esp-idf.git
git clone https://gitee.com/EspressifSystems/esp-gitee-tools.git

2. Download the components component

cd esp-idf

../esp-gitee-tools/submodule-update.sh

3. Install sdk

cd esp-idf

git log

./install.sh 

********************************************************************

（如果出现bidict>=0.21.0t版本不对的问题，可以换成pyhton3 方法如下）

vim tools/idf_tools.py

--   1         #!/usr/bin/env python
++   1         #!/usr/bin/env python3

./install.sh

出现/usr/bin/python3 No Module named pip


sudo apt install python3-pip

./install.sh



********************************************************************

Add an environment variable alias

vi ~/.bashrc

alias get_idf='. /home/airgens/workspace/esp32_workspace/esp-code/esp-idf/export.sh'

source ~/.bashrc

4. Compile sample->hello world

cd examples/get-started/hello_world/

###############   esp32也有可能是其它target   ##########
idf.py set-target esp32


idf.py menuconfig


idf.py build

compile successfully

5. Download to the board

In the lower right corner of the virtual machine, the serial port is recognized

ls /dev/ttyUSB0

sudo chmod 777 /dev/ttyUSB0

idf.py -p /dev/ttyUSB0 flash

#您可使用快捷键 Ctrl+]，退出 IDF 监视器。
idf.py -p /dev/ttyUSB0 monitor

esptools -p /dev/ttyUSB0 -b 460800 --before default_reset --after hard_reset --chip esp32  write_flash --flash_mode dio --flash_size detect --flash_freq 40m 0x1000 build/bootloader/bootloader.bin 0x8000 build/partition_table/partition-table.bin 0x10000 build/hello-world.bin

Can be downloaded successfully

But using idf.py -p /dev/USB0 -b 460800 flash command to download failed

Guess it should be due to the version of python.

We modify idf.sh

vim   ../../../esp-idf/idf.py

-- 1   #!/usr/bin/env python
++ 1   #!/usr/bin/env python3

保存

idf.py -p /dev/USB0 -b 460800 flash

success

idf.py -p /dev/ttyUSB0 -b 460800 flash monitor

ESP32 ubuntu1804 compilation environment construction