Help¶

When shifted out at the configured clock frequency, this must generate a pulse whose width fits within the chipset specifications for T1H, and whose interpulse timing meets low times. It is recommended that the first and last bits in the frame be zero; this “encourages” SPI IPs to leave MOSI low between frames.

Direct dependencies¶

WS2812_STRIP && LED_STRIP

(Includes any dependencies from if’s and menus.)

Defaults¶

0x7c if WS2812_STRIP && LED_STRIP

Kconfig definition¶

At drivers/led_strip/Kconfig.ws2812:54

Included via Kconfig:10 → Kconfig.zephyr:29 → drivers/Kconfig:76 → drivers/led_strip/Kconfig:46

Menu path: (top menu) → Device Drivers → LED strip drivers → Enable WS2812 (and compatible) LED strip driver

config WS2812_STRIP_ONE_FRAME
    hex
    prompt "SPI frame to shift out to signal a one bit" if WS2812_STRIP && LED_STRIP
    default 0x7c if WS2812_STRIP && LED_STRIP
    depends on WS2812_STRIP && LED_STRIP
    help
      When shifted out at the configured clock frequency,
      this must generate a pulse whose width fits within the chipset
      specifications for T1H, and whose interpulse timing meets low
      times. It is recommended that the first and last bits in the
      frame be zero; this "encourages" SPI IPs to leave MOSI low
      between frames.

(Definitions include propagated dependencies, including from if’s and menus.)