Moved to new project

I created a new more flexible led library implementation at this new project: https://github.com/ForsakenNGS/PicoLED

Simple WS2812 LED library for the Raspberry Pi Pico in C++

After not finding any libraries to address my WS2812, I took the sample code from the documentation and wrote a simple library based on it.

Getting started

• Copy over the WS2812.cpp, WS2812.hpp and WS2812.pio files into your project
• Add pico_generate_pio_header(YourProject ${CMAKE_CURRENT_LIST_DIR}/WS2812.pio) to your CMakeLists.txt (Replacing YourProject with the name of your project, duh :D)
• Add the WS2812.cpp to your add_executable instruction of your CMakeLists.txt
• Make sure hardware_pio is included within the target_link_libraries instruction of your CMakeLists.txt
• Initialize a WS2812-Object with the desired parameters (see below for more details)
• Set the pixels values using setPixelColor or fill
• Send the pixel data to the LED strip using show

Initialization

WS2812(uint pin, uint length, PIO pio, uint sm);
WS2812(uint pin, uint length, PIO pio, uint sm, DataFormat format);
WS2812(uint pin, uint length, PIO pio, uint sm, DataByte b1, DataByte b2, DataByte b3);
WS2812(uint pin, uint length, PIO pio, uint sm, DataByte b1, DataByte b2, DataByte b3, DataByte b4);

Required:

• pin: The GPIO-pin of the pico that is connected to the data line of your LED strip
• length: The number of LEDs in your strip
• pio: Either pio0 or pio1 representing one of the two PIO-Blocks available in the pico
• sm: The index of the state machine for interfacing with the led strip (0-3) which can only be used once per PIO-Block

Optional simple:

• format: One of FORMAT_RGB, FORMAT_GRB or FORMAT_WRGB depending on your LED strip. Default is FORMAT_GRB. If in doubt just try it out.

Optional flexible:

If none of the predefined formats matches your strip, you can define the byte order manually

• b1-b4: One of RED, GREEN, BLUE, WHITE

For example (GBR-Format):

WS2812 ledStrip(0, 6, pio0, 0, WS2812.GREEN, WS2812.BLUE, WS2812.RED);

Example

For a quick start you can simply use this repository as a starting point. The example.cpp contains the entry point and the CMakeLists.txt is already configured properly. All you have to do is compile it and upload it to your Raspberry Pi Pico.