This library is based on code found here. But it has one major difference - it is configured in more clear way.
Just add files to your project and define pin used to control LEDs and strip length For example
#define WS2812B_PORT GPIOD_PORT
#define WS2812B_PIN 3
#define NB_LEDS 60
Files WS2812B_LLD.c, WS2812B_LLD.h and ws2812b_conf.h do not depend on any external libraries and may be used without STM8 SPL. They are low level drivers for LEDs and are mainly written in assembler. The only requirement is that MCU runs on 16MHz and pin is configured as fast PUSH_PULL output.
File WS2812B_FX.c contains some demo animations. It requires some realisation of void _delay_ms(u16 wait) for proper operation.
Only one LED strip is supported.