esp-idf/examples
Renz Christian Bagaporo 3882e48e8a cmake: use new signature form of target_link_library to link components
!4452 used setting LINK_LIBRARIES and INTERFACE_LINK_LIBRARIES to link
components built under ESP-IDF build system. However, LINK_LIBRARIES does
not produce behavior same as linking PRIVATE. This MR uses the new
signature for target_link_libraries directly instead. This also moves
setting dependencies during component registration rather than after all
components have been processed.

The consequence is that internally, components have to use the new
signature form as well. This does not affect linking the components to
external targets, such as with idf_as_lib example. This only affects
linking additional libraries to ESP-IDF libraries outside component processing (after
idf_build_process), which is not even possible for CMake<v3.13 as
target_link_libraries is not valid for targets not created in current
directory. See https://cmake.org/cmake/help/v3.13/policy/CMP0079.html#policy:CMP0079
2019-06-11 18:09:26 +08:00
..
bluetooth Delete unneeded code fragments from GPIO-example 2019-05-29 18:02:18 +05:30
build_system/cmake cmake: use new signature form of target_link_library to link components 2019-06-11 18:09:26 +08:00
common_components/protocol_examples_common Rename Kconfig options (examples) 2019-05-21 09:32:55 +02:00
ethernet esp_event: fix bug in set_default_eth_handler 2019-05-31 16:00:15 +08:00
get-started examples: Move blink code to main task 2019-02-28 12:12:24 +05:30
mesh examples: update with build system changes 2019-05-14 18:01:14 +08:00
peripherals all: Using xxx_periph.h 2019-06-03 14:15:08 +08:00
protocols mbedtls: add config option for setting debug level 2019-06-06 18:28:19 +05:30
provisioning Merge branch 'feature/prov_mgr' into 'master' 2019-06-11 09:46:50 +08:00
storage Merge branch 'bugfix/nvs_typedef_naming_pr3239' into 'master' 2019-05-29 08:14:00 +08:00
system Added support for NVS iterators 2019-06-10 16:42:39 +02:00
wifi update ota examples to support both Wi-Fi and Ethernet 2019-05-22 17:56:10 +08:00
README.md examples: generic cmake support examples 2018-11-27 13:59:26 +08:00

Examples

This directory contains a range of example ESP-IDF projects. These are intended to demonstrate parts of ESP-IDF functionality, and to provide code that you can copy and adapt into your own projects.

Example Layout

The examples are grouped into subdirectories by category. Each category directory contains one or more example projects:

  • bluetooth contains Bluetooth (BLE & BT Classic) examples.
  • ethernet contains Ethernet examples.
  • get-started contains some very simple examples with minimal functionality.
  • mesh contains Wi-Fi Mesh examples.
  • peripherals contains examples showing driver functionality for the various onboard ESP32 peripherals.
  • protocols contains examples showing network protocol interactions.
  • storage contains examples showing data storage methods using SPI flash or external storage like the SD/MMC interface.
  • system contains examples which demonstrate some internal chip features, or debugging & development tools.
  • wifi contains examples of advanced Wi-Fi features. (For network protocol examples, see protocols instead.)
  • build_system contains examples of build system features

Using Examples

Building an example is the same as building any other project:

  • Follow the Getting Started instructions which include building the "Hello World" example.
  • Change into the directory of the new example you'd like to build.
  • make menuconfig to configure the example. Most examples have a project-specific "Example Configuration" section here (for example, to set the WiFi SSID & password to use).
  • make to build the example.
  • Follow the printed instructions to flash, or run make flash.

Copying Examples

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.

The IDF_PATH environment variable is the only thing that connects the example to the rest of ESP-IDF.

If you're looking for a more bare-bones project to start from, try esp-idf-template.

Contributing Examples

If you have a new example you think we'd like, please consider sending it to us as a Pull Request.

In the ESP-IDF documentation, you can find a "Creating Examples" page which lays out the steps to creating a top quality example.