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59 lines
2.2 KiB
Markdown
59 lines
2.2 KiB
Markdown
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
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| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- | -------- | -------- |
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# Using the component manager for downloading dependencies
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This example demonstrates how to use [IDF Component Manager](https://pypi.org/project/idf-component-manager/) for downloading dependencies from [the component registry](https://components.espressif.com). More details and use cases of IDF Component Manager can be found in the programming guide under `API Guides` -> `Tools` -> `IDF Component Manager`.
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## How to use the example
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### Hardware Required
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This example is designed to work with any commonly available development kit.
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### Build and Flash
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Run `idf.py reconfigure` to configure this project. During CMake execution the component manager will process data from the manifest file `./main/idf_component.yml` where 2 dependencies are defined:
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- `idf: ">=4.1"` - Specifies required version of ESP-IDF.
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- `example/cmp: ">=3.3.3"` - Defines dependency on [example/cmp](https://components.espressif.com/component/example/cmp) component that is used by the main component.
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CMake Output:
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```
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...
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Solving dependencies requirements
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Updating lock file at /home/user/esp-idf/examples/build_system/cmake/component_manager/dependencies.lock
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Processing 2 dependencies:
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[1/2] example/cmp
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[2/2] idf
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...
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```
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Content of the `./managed_components` directory after successful build:
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```
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> find ./managed_components
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./managed_components
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./managed_components/example__cmp
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./managed_components/example__cmp/include
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./managed_components/example__cmp/include/cmp.h
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./managed_components/example__cmp/LICENSE
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./managed_components/example__cmp/README.md
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./managed_components/example__cmp/CMakeLists.txt
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./managed_components/example__cmp/changelog.md
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./managed_components/example__cmp/cmp.c
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./managed_components/example__cmp/idf_component.yml
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```
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Flash the project and run the serial monitor to view the output:
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```
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idf.py -p PORT flash monitor
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```
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### Example Output
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The example outputs a line from the `cmp_hello` function from the component downloaded by the component manager.
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```
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Hello from example component!
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```
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