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esp-idf/examples/get-started/hello_world
Historia
Frantisek Hrbata fbe8bf89ee fix: properly resolve component dependencies 
There is currently a bug in the __build_resolve_and_add_req function in
tools/cmake/build.cmake where the check for registered component
requirements is incorrectly applied to the component itself rather than
its dependencies. This issue likely originated from a typo, using
component_target instead of _component_target. To prevent further
confusion, _component_target has been renamed to _req_target.

Fixing this revealed multiple incorrect dependencies for the Linux
target, which have now been resolved by explicitly specifying the
dependencies for the Linux target.

Closes https://github.com/espressif/esp-idf/issues/13447

Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
 		2024-05-30 22:01:55 +08:00
..
main fix: properly resolve component dependencies 2024-05-30 22:01:55 +08:00
CMakeLists.txt
…
README.md feat(esp32c61): final introduce helloworld support 2024-04-02 10:50:52 +08:00
pytest_hello_world.py feat(ci): Added CI host test for the linux target on MacOS runners 2024-05-24 16:29:22 +02:00
sdkconfig.ci
…

README.md

Supported Targets ESP32 ESP32-C2 ESP32-C3 ESP32-C5 ESP32-C6 ESP32-C61 ESP32-H2 ESP32-P4 ESP32-S2 ESP32-S3 Linux

Hello World Example

Starts a FreeRTOS task to print "Hello World".

(See the README.md file in the upper level 'examples' directory for more information about examples.)

How to use example

Follow detailed instructions provided specifically for this example.

Select the instructions depending on Espressif chip installed on your development board:

Example folder contents

The project hello_world contains one source file in C language hello_world_main.c. The file is located in folder main.

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).

Below is short explanation of remaining files in the project folder.

├── CMakeLists.txt
├── pytest_hello_world.py      Python script used for automated testing
├── main
│   ├── CMakeLists.txt
│   └── hello_world_main.c
└── README.md                  This is the file you are currently reading

For more information on structure and contents of ESP-IDF projects, please refer to Section Build System of the ESP-IDF Programming Guide.

Troubleshooting

  • Program upload failure

    • Hardware connection is not correct: run idf.py -p PORT monitor, and reboot your board to see if there are any output logs.
    • The baud rate for downloading is too high: lower your baud rate in the menuconfig menu, and try again.

Technical support and feedback

Please use the following feedback channels:

  • For technical queries, go to the esp32.com forum
  • For a feature request or bug report, create a GitHub issue

We will get back to you as soon as possible.