show()

void fl::SpiChannelEngineAdapter::show ( )

overridevirtual

Trigger transmission of enqueued data.

Note

Groups channels by clock pin, acquires DMA buffers, calls transmit()

Implements fl::IChannelDriver.

Definition at line 229 of file spi_channel_adapter.cpp.hpp.

                                                {
    if (mEnqueuedChannels.empty()) {
        return;
    }
 
    FL_DBG("SpiChannelEngineAdapter: show() called with " << mEnqueuedChannels.size() << " channels");
 
    // Move enqueued channels to transmitting list
    mTransmittingChannels = fl::move(mEnqueuedChannels);
    mEnqueuedChannels.clear();
 
    // Group channels by clock pin
    // Channels with the same clock pin can share SPI bus configuration
    auto groups = groupByClockPin(mTransmittingChannels);
 
    FL_DBG("SpiChannelEngineAdapter: Grouped into " << groups.size() << " clock pin groups");
 
    // Transmit each group sequentially
    for (size_t i = 0; i < groups.size(); i++) {
        const ClockPinGroup& group = groups[i];
 
        FL_DBG("SpiChannelEngineAdapter: Transmitting group with clock pin " << group.clockPin << " (" << group.channels.size() << " channels)");
 
        if (!transmitBatch(group.channels)) {
            FL_WARN("SpiChannelEngineAdapter: Failed to transmit batch for clock pin " << group.clockPin);
            // Continue with other groups rather than aborting entirely
        }
    }
 
    FL_DBG("SpiChannelEngineAdapter: show() complete");
}

References fl::SpiChannelEngineAdapter::ClockPinGroup::channels, fl::SpiChannelEngineAdapter::ClockPinGroup::clockPin, FL_DBG, fl::FL_NO_EXCEPT, FL_WARN, groupByClockPin(), mEnqueuedChannels, fl::adl_barrier::move(), mTransmittingChannels, fl::vector_basic::size(), and transmitBatch().

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