esp-now supports one-to-many and many-to-many device connection and control which can be used for the mass data transmission, like network config, firmware upgrade and debugging etc.
Please use the component manager command add-dependency to add the esp-now to your project's dependency, during the CMake step the component will be downloaded automatically.
idf.py add-dependency "espressif/esp-now=*"
Please use the component manager command create-project-from-example to create the project from example template.
idf.py create-project-from-example "espressif/esp-now=*:coin_cell_demo/bulb"
Then the example will be downloaded in current folder, you can check into it for build and flash.
You can use this command to download other examples. Or you can download examples from esp-now repository:
Q1. I encountered the following problems when using the package manager
Executing action: create-project-from-example
CMakeLists.txt not found in project directory /home/username
A1. This is because an older version packege manager was used, please run pip install -U idf-component-manager in ESP-IDF environment to update.