kopia lustrzana https://github.com/espressif/esp-idf
72 wiersze
4.6 KiB
Markdown
72 wiersze
4.6 KiB
Markdown
# Examples
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This directory contains a range of example ESP-IDF projects. These examples are intended to demonstrate parts of the ESP-IDF functionality, and to provide code that you can copy and adapt into your own projects.
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## Example Layout
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The examples are grouped into subdirectories by category. Each category directory contains one or more example projects:
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- `bluetooth/bluedroid` Classic BT, BLE and coex examples using default Bluedroid host stack.
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- `bluetooth/nimble` BLE examples using NimBLE host stack.
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- `bluetooth/esp_ble_mesh` ESP BLE Mesh examples.
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- `bluetooth/hci` HCI transport (VHCI and HCI UART) examples.
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- `build_system` Examples of build system features.
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- `cxx` C++ language utilization examples and experimental components.
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- `ethernet` Ethernet network examples.
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- `get-started` Simple examples with minimal functionality. Good start point for beginners.
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- `mesh` Wi-Fi Mesh examples.
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- `network` Examples related to general network environment, test & analysis.
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- `openthread` OpenThread examples.
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- `peripherals` Examples showing driver functionality for the various onboard ESP32 peripherals.
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- `protocols` Examples showing network protocol interactions.
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- `provisioning` Wi-Fi provisioning examples.
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- `security` Examples about security features.
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- `storage` Examples showing data storage methods using SPI flash, external storage like the SD/MMC interface and flash partitioning.
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- `system` Demonstrates some internal chip features, or debugging & development tools.
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- `wifi` Advanced Wi-Fi features (For network protocol examples, see `protocols` instead.)
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In addition to these examples, `commmon_components` directory contains code shared by several examples.
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## Using Examples
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Before building an example, be sure to follow the [ESP-IDF Getting Started Guide](https://idf.espressif.com/) to ensure you have the required development environment.
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Building an example is the same as building any other project:
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- Change into the directory of the new example you'd like to build.
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- Run `idf.py set-target TARGET` to select the correct chip target to build before opening the project configuration menu. By default the target is `esp32`. For all options see `idf.py set-target --help`
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- Run `idf.py menuconfig` to open the project configuration menu. Most examples have a project-specific "Example Configuration" section here (for example, to set the WiFi SSID & password to use).
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- `idf.py build` to build the example.
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- Follow the printed instructions to flash, or run `idf.py -p PORT flash`.
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## Running Test Python Script (ttfw)
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Some of the examples have `..._test.py` scripts that are used to test that the example works as expected. These scripts run automatically in the internal test queue. They are not intended to be run by ESP-IDF users but sometimes you may want to run them locally. The following requirements must be met in the IDF python virtual environment.
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- ttfw needs to be in the `PYTHONPATH`. Add it like this: `export PYTHONPATH=$PYTHONPATH:$IDF_PATH/tools/ci/python_packages`
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- Install all requirements from `tools/ci/python_packages/ttfw_idf/requirements.txt`: `python -m pip install -r $IDF_PATH/tools/ci/python_packages/ttfw_idf/requirements.txt`
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These commands help solve the issue with `ModuleNotFoundError: No module named 'ttfw_idf'` and `ModuleNotFoundError: No module named 'tiny_test_fw'`.
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Some examples might fail due to other missing packages. You might need to install them manually: `pip install websocket`.
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## Running Test Python Script (pytest)
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Some of the examples have `pytest_....py` scripts that are using the `pytest` as the test framework. For detailed information, please refer to the "Run the Tests Locally" Section under [ESP-IDF tests in Pytest documentation](../docs/en/contribute/esp-idf-tests-with-pytest.rst)
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Using `pytest` is the recommended way to write new tests. We will migrate all the example test scripts to this new framework soon.
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## Copying Examples
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Each example is a standalone project. The examples _do not have to be inside the esp-idf directory_. You can copy an example directory to anywhere on your computer in order to make a copy that you can modify and work with.
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The `IDF_PATH` environment variable is the only thing that connects the example to the rest of ESP-IDF.
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If you're looking for a more bare-bones project to start from, try [esp-idf-template](https://github.com/espressif/esp-idf-template).
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## Contributing Examples
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If you have a new example you think we'd like, please consider sending it to us as a Pull Request.
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In the ESP-IDF documentation, you can find a ["Creating Examples" page](../docs/en/contribute/creating-examples.rst) which lays out the steps to creating a top quality example.
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