groupByClockPin()

fl::vector< SpiChannelEngineAdapter::ClockPinGroup > fl::SpiChannelEngineAdapter::groupByClockPin ( fl::span< const ChannelDataPtr > channels )

private

Group adjacent channels with matching pins, host, and clock rate.

Parameters

channels

Span of channel data to group

Returns

Vector of groups in enqueue order

Definition at line 298 of file spi_channel_adapter.cpp.hpp.

               {
    fl::vector<ClockPinGroup> groups;
 
    for (const auto& channel : channels) {
        if (!channel) {
            continue;
        }
 
        // Extract clock pin from chipset configuration
        const auto& chipset = channel->getChipset();
        if (!chipset.is<SpiChipsetConfig>()) {
            FL_WARN("SpiChannelEngineAdapter: Non-SPI chipset in groupByClockPin");
            continue;
        }
 
        const SpiChipsetConfig& spiConfig = chipset.get<SpiChipsetConfig>();
        int clockPin = spiConfig.clockPin;
        int dataPin = channel->getPin();
        u32 clockSpeedHz = spiConfig.timing.clock_hz;
 
        // Preserve enqueue order when the same host alternates configurations.
        if (!groups.empty()) {
            ClockPinGroup& last = groups.back();
            if (last.clockPin == clockPin && last.dataPin == dataPin &&
                last.clockSpeedHz == clockSpeedHz &&
                last.requestedBus == spiConfig.spiBus) {
                last.channels.push_back(channel);
                continue;
            }
        }
 
        ClockPinGroup newGroup;
        newGroup.clockPin = clockPin;
        newGroup.dataPin = dataPin;
        newGroup.clockSpeedHz = clockSpeedHz;
        newGroup.requestedBus = spiConfig.spiBus;
        newGroup.channels.push_back(channel);
        groups.push_back(newGroup);
    }
 
    return groups;
}

References fl::vector< T >::back(), fl::SpiChannelEngineAdapter::ClockPinGroup::channels, fl::SpiEncoder::clock_hz, fl::SpiChannelEngineAdapter::ClockPinGroup::clockPin, fl::SpiChipsetConfig::clockPin, fl::SpiChannelEngineAdapter::ClockPinGroup::clockSpeedHz, fl::SpiChannelEngineAdapter::ClockPinGroup::dataPin, fl::vector_basic::empty(), fl::FL_NO_EXCEPT, FL_WARN, fl::vector< T >::push_back(), fl::SpiChannelEngineAdapter::ClockPinGroup::requestedBus, fl::SpiChipsetConfig::spiBus, and fl::SpiChipsetConfig::timing.

Referenced by show().

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