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IDF Component Manager

The IDF Component manager is a tool that downloads dependencies for any ESP-IDF CMake project. It makes sure that the right versions of all components required for a successful build of your project are in place. The download happens automatically during a run of CMake. It can source components either from the component registry or from a git repository.

A list of components can be found on https://components.espressif.com/

Installing the IDF Component Manager

IDF component manager can be used with ESP-IDF v4.1 and later.

For ESP-IDF v4.4 the idf-component-manager package is installed by default and no extra action is necessary.

In ESP-IDF v4.1 — v4.3, you need to install the following Python package to use the component manager:

source $IDF_PATH/export.sh
pip install idf-component-manager --upgrade

Activating the Component Manager

If CMake is started using idf.py or ESP-IDF VSCode Extension then the Component manager will be activated by default.

If CMake is used directly or with some CMake-based IDE like CLion, it’s necessary to set the IDF_COMPONENT_MANAGER environment variable to 1 to enable the component manager integration with the build system.

Using with a project

You can add idf_component.yml manifest files with the list of dependencies to any component in your project.

IDF Component Manager will download dependencies automatically during the project build process.

When CMake configures the project (e.g. idf.py reconfigure) component manager does a few things:

  • Processes idf_component.yml manifests for every component in the project
  • Creates a dependencies.lock file in the root of the project with a full list of dependencies
  • Downloads all dependencies to the managed_components directory

The component manager won't try to regenerate dependencies.lock or download any components if manifests, lock file, and content of managed_component directory weren't modified since the last successful build.

Defining dependencies in the manifest

All dependencies are defined in the manifest file.

dependencies:
  # Required IDF version
  idf: ">=4.1"
  # For components maintained by Espressif only name can be used.
  # Same as `espressif/component`
  component:
    version: "~2.0.0"
  # Or in a shorter form
  component2: ">=1.0.0"
  # For 3rd party components :
  username/component:
    version: "~1.0.0"
    # For transient dependencies `public` flag can be set.
    # `public` flag doesn't have an effect for the `main` component.
    # All dependencies of `main` are public by default.
    public: true
  anotheruser/component: "<3.2.20"
  # For components hosted on non-default registry:
  company_user/component:
    version: "~1.0.0"
    service_url: "https://componentregistry.company.com"
  # For components in git repository:
  test_component:
    path: test_component
    git: ssh://[email protected]/user/components.git
  # For test projects during component development
  # components can be used from a local directory
  # with relative or absolute path
  some_local_component:
    path: ../../projects/component

Contributions Guide

We welcome all contributions to the Component Manager project.

You can contribute by fixing bugs, adding features, adding documentation, or reporting an issue. We accept contributions via Github Pull Requests.

Before reporting an issue, make sure you've searched for a similar one that was already created. If you are reporting a new issue, please follow the Issue Template.

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