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53 lines
2.3 KiB
Markdown
53 lines
2.3 KiB
Markdown
# Hello World Example
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Starts a FreeRTOS task to print "Hello World".
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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## How to use example
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Follow detailed instructions provided specifically for this example.
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Select the instructions depending on Espressif chip installed on your development board:
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- [ESP32 Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/stable/get-started/index.html)
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- [ESP32-S2 Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/get-started/index.html)
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## Example folder contents
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The project **hello_world** contains one source file in C language [hello_world_main.c](main/hello_world_main.c). The file is located in folder [main](main).
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ESP-IDF projects are built using CMake. The project build configuration is contained in `CMakeLists.txt` files that provide set of directives and instructions describing the project's source files and targets (executable, library, or both).
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Below is short explanation of remaining files in the project folder.
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```
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├── CMakeLists.txt
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├── example_test.py Python script used for automated example testing
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├── main
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│ ├── CMakeLists.txt
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│ ├── component.mk Component make file
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│ └── hello_world_main.c
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├── Makefile Makefile used by legacy GNU Make
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└── README.md This is the file you are currently reading
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```
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For more information on structure and contents of ESP-IDF projects, please refer to Section [Build System](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/build-system.html) of the ESP-IDF Programming Guide.
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## Troubleshooting
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* Program upload failure
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* Hardware connection is not correct: run `idf.py -p PORT monitor`, and reboot your board to see if there are any output logs.
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* The baud rate for downloading is too high: lower your baud rate in the `menuconfig` menu, and try again.
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## Technical support and feedback
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Please use the following feedback channels:
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* For technical queries, go to the [esp32.com](https://esp32.com/) forum
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* For a feature request or bug report, create a [GitHub issue](https://github.com/espressif/esp-idf/issues)
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We will get back to you as soon as possible.
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