busName()

const char * fl::busName ( Bus b )

inline

Canonical driver-name string for a Bus value.

Each Bus::X corresponds to exactly one concrete IChannelDriver. That driver's getName() returns a stable string that ChannelManager uses as the lookup key (findDriverByName / getDriverByName). Channels read ChannelOptions::mBus (#2459) and the dispatch layer derives the lookup string via busName(mBus) — typo-prone string literals never appear at the call site.

Returns "AUTO" for Bus::AUTO — diagnostic/log paths get a stable human-readable label. mBus == Bus::AUTO means "no Bus pin; let the manager pick by priority", so this name never reaches the manager's lookup.

Spelling is normalized to match the C++ enumerator name exactly (including underscores in FLEX_IO, OBJECT_FLED, BIT_BANG). Driver getName() implementations return the same string, so callers never need a reverse mapping or special-case handling.

Lifetime. Every returned pointer is to a string literal, so it has static storage duration — safe to feed to fl::string::from_literal().

Definition at line 167 of file bus.h.

                                              {
    switch (b) {
        case Bus::AUTO:          return "AUTO";
        case Bus::RMT:           return "RMT";
        case Bus::PARLIO:        return "PARLIO";
        case Bus::SPI:           return "SPI";
        case Bus::I2S:           return "I2S";
        case Bus::I2S_SPI:       return "I2S_SPI";
        case Bus::LCD_RGB:       return "LCD_RGB";
        case Bus::LCD_SPI:       return "LCD_SPI";
        case Bus::LCD_CLOCKLESS: return "LCD_CLOCKLESS";
        case Bus::UART:          return "UART";
        case Bus::FLEX_IO:       return "FLEX_IO";
        case Bus::OBJECT_FLED:   return "OBJECT_FLED";
        case Bus::LPUART:        return "LPUART";
        case Bus::BIT_BANG:      return "BIT_BANG";
        case Bus::STUB:          return "STUB";
    }
    return "";  // unreachable — silences -Wreturn-type on toolchains that miss the exhaustive switch
}

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

Referenced by fl::Channel::resolveDynamicDriver(), and fl::ChannelManager::setExclusiveDriver().

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