Icon64 Example

This is a simple "getting started" example for the ThingPulse Icon64 device. Icon64 includes 64 WS2812B RGB LEDs, an MAX98357A I2S DAC with built-in amplifier, and an ESP32 WROVER-B module.

The example plays a .wav file and blinks the LEDs. See main/example_main.cpp — there is not much to it.

Other supporting components of the example include:

• WAV reader library from https://github.com/brglng/libwav/.
• icon64 helper for board-specific functions
• code to mount an SPIFFS partition
• code to play a WAV file over I2S

Build and Flash

You need ESP-IDF 4.x to build this project. See the ESP-IDF Getting Started Guide for full steps to configure and use ESP-IDF to build projects.

When IDF is set up, use the following command to build the project, flash it to the board, and run monitor tool to view serial output:

idf.py -p PORT flash monitor

Files from data directory are automatically uploaded to an SPIFFS partition when idf.py flash is executed. You can use this partition to store sounds and images.

To build and flash the app only (which is faster), run instead:

idf.py -p PORT app-flash monitor

Credits

Thanks to @squix78 for sending me an Icon64 board!

WAV library from https://github.com/brglng/libwav/ is licensed under MPL license. You might consider using something else if you are building a commercial project.

WAV files in data directory are from AOSP project, which is Apache 2.0 licensed.

The rest of the code is based on ESP-IDF examples. It is released into public domain or CC0-licensed, at your option.