default_bus_priority()

int fl::default_bus_priority ( Bus b )

constexpr

Default priority assigned to a Bus when registered with the manager.

Higher = preferred. The function is constexpr so callers can use it in constant expressions if needed. Buses without a registered priority fall back to 0.

Definition at line 38 of file bus_priorities.h.

                                                      {
    // FORCE-style overrides (FASTLED_ESP32_FORCE_*) are intentionally not
    // applied here -- the legacy initChannelDrivers() retains its own
    // priority-bumping logic for backward compatibility. This table is the
    // baseline used by the new enableDrivers<>() opt-in API.
    return
        b == Bus::I2S_SPI       ? 10 :
        b == Bus::LCD_SPI       ? 10 :
        b == Bus::PARLIO        ? 4  :
        b == Bus::LCD_RGB       ? 3  :
        b == Bus::RMT           ? 2  :
        b == Bus::LCD_CLOCKLESS ? 2  :
        b == Bus::I2S           ? 1  :
        b == Bus::FLEX_IO       ? 1  :
        b == Bus::OBJECT_FLED   ? 1  :
        b == Bus::SPI           ? 0  :
        b == Bus::BIT_BANG      ? 0  :
        b == Bus::STUB          ? 0  :
        b == Bus::UART          ? -1 :
        0;
}

References BIT_BANG, FL_NOEXCEPT, FLEX_IO, I2S, I2S_SPI, LCD_CLOCKLESS, LCD_RGB, LCD_SPI, OBJECT_FLED, PARLIO, RMT, SPI, STUB, and UART.