FastLED-idf

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Hello,

I am trying to make a firmware (based on example code from espressif's homekit SDK) for a board that uses homekit to control WS2812B lights. While trying to add the FastLed component to the lightbulb example, a ton of warnings and errors occur. I have attached a build log (the output of idf.py build) and the modified example. Can you please tell me what I am doing wrong and how I could fix it?

This is on a MacBook Pro running 11.2.1 with idf version ESP-IDF v4.4-dev-479-g1067b2870.

(I have removed the build folder to due github upload size limitation, please ask if I need to provide it)

build_log.txt ledstrip.zip

All files that import FastLED.h need to be .cpp files. Have you made this change? For example my project which uses FastLED-idf + esp-homekit-sdk has an app_main.cpp file, and all other files are also *.cpp files.

The only thing I did was dragging components/FastLED-idf to the components folder of esp-homekit-sdk. I see here That you should drop FastLED as well?! Is there an installation/starting out section?

You dropped just the FastLED-idf component into your components folder, right? Make sure you didn't put this entire repository in your components folder because the actual FastLED-idf component is inside this repository's components directory.

Also make sure you clean your project (idf.py fullclean)

I tried to replicate errors after every little step. It appears that after changing the app_main and lightbulb c files to be cpp files, it won't compile. This is without including FastLED. Any idea? Link to example

What does your CMakeLists.txt look like? Make sure to include the .cpp files you were referencing above. Here is mine:

idf_component_register(
  SRCS
    app_main.cpp
    lightbulb.cpp
    # ... other files

  INCLUDE_DIRS "."
)

Also make sure your app_main.cpp has extern "C" like so:

#ifdef __cplusplus
extern "C"
{
#endif
  void app_main()
  {
    my_code_here();
  }
#ifdef __cplusplus
}
#endif

You may also need to define extern "C" around any files that import FastLED.h