This drives the WS2812B led, with E1.31 protocol. I essentially did stuff from scratch, communicating with the WS2812B using PWM signals, and communicating wirelessly from the computer using Wi-Fi AT commands. I used the STM32L475 MCU, but it shouldn't really matter.
*Note: * Go to the folder "Core" for the main code, the others are essential libraries and configuriations.