What

(2024-03 .. 2024-05)

Arduino library to control LED stripe.

My journey to the land of microcontrollers programming and back. There are some dragons.

Buzzwords description

Arduino. AVR. ATmega328/P. 16 MHz. RGB LED stripe. WS2812B. Function. C. Assembler. Standalone implementation. GPL3.

Requirements

• arduino-cli
• bash

Install

Run Install.sh.

Remove

Run Remove.sh.

How

#include <me_Ws2812b.h>
...
using namespace me_Ws2812b;

TPixel Pixels[] =
  {
    { .Green = 0xFF, .Red = 0, .Blue = 0 },
    { .Green = 0, .Red = 0xFF, .Blue = 0 },
    { .Green = 0, .Red = 0, .Blue = 0xFF },
  };

TLedStripeState State;

State.Pixels = Pixels;
State.Length = sizeof(Pixels) / sizeof(TPixel);
State.Pin = A0;

SetLedStripeState(State);

See examples for real code.

Code

Code is readable.

• Interface
• Implementation

Other people implementations

I'm aware of them and intentionally decided to write my own.

Main issue there is bad design. It's unlimited. They are trying to write multi-platform code in C lol. And they are putting all the fancy color manipulation routines in their libraries. Neverending projects.

More important, you can't change LED output pin at runtime there.

• FastLED
• Adafruit NeoPixel

See also

• My development rantings
• Additional documentation (Datasheet, oscilloscope timings, sticky pins weirdness.)
• My other repositories