mirror of https://github.com/espressif/esp-idf.git synced 2024-09-21 06:56:11 -04:00

History

Djordje Nedic facab8c5a7 tools: Increase the minimal supported CMake version to 3.16 This updates the minimal supported version of CMake to 3.16, which in turn enables us to use more CMake features and have a cleaner build system. This is the version that provides most new features and also the one we use in our latest docker image for CI.		2022-06-01 06:35:02 +00:00
..
main	hello_world: fix incorrect printf format	2022-05-06 10:38:49 +00:00
CMakeLists.txt	tools: Increase the minimal supported CMake version to 3.16	2022-06-01 06:35:02 +00:00
pytest_hello_world.py	ci: add qemu example	2022-05-21 00:11:59 +08:00
README.md	ci: add qemu example	2022-05-21 00:11:59 +08:00
sdkconfig.ci	example_tests: Deletes usage esp32c3 ECO0 in CI (by default ECO3)	2021-09-24 13:55:07 +08:00

README.md

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.