LED Face Mask

Yep, it's gonna be awesome!

Configuration

Hardware:
- STM32F429I-DISC1 Board
  - Contains STM32F429ZIT MCU
- 8 x 8 WS2812B LED Array
Software:
- The WS2812B Datasheet says it uses "NZR" communication for data, which, I have no idea what that is and DuckDuckGo can't find anything on it
- Using SPI in order to send the data fast enough
  - SPI Setup:
    - Mode: Transmit Only Master
    - Data size of 8 bits
    - Most Significant Bit (MSB) first, as that would be the most straightforward
    - Rate of 2.5 Mbit/sec, as that would allow for 400 nanosecond pulse widths
    - Clock Polarity: Don't Care
    - Clock Phase: Don't Care
    - Will NOT be using the SPI Clock signal, as the WS2812B LEDs do not need it
    - Global Interrupt: Enabled
- For switching LED designs:
  - Using TIM6 as a "cooldown" to not have it switch the design hundreds of times on a single button-press
    - While in "cooldown" state, LEDs will be off, to signify that the button press has been received and the LED design will be changed
    - TIM6 is using APB1, which the timer clocks are set at 80 MHz
    - "Cooldown" time of 0.5 seconds is desired:
      - 80000000 Hz * 0.5 seconds = 40000000 clock cycles
    - TIM6 Configuration:
      - One Pulse Mode: Enabled
      - Prescaler: 4000
      - Counter Mode: Up
      - Counter Period: 10000
      - Auto-Reload Preload: Enabled
      - Trigger Event Selection: Reset (UG bit from TIMx_EGR)
      - Global Interrupt: Enabled