checkOneGroup()

HandleResult fl::can_match_detail::checkOneGroup ( const DriverCapabilities & caps, const PinGroup & g, const ChannelRequest & r )

inline

Definition at line 149 of file can_match.cpp.hpp.

                                              {
    if (g.protocol != r.protocol) {
        return HandleResult::NoProtocol;
    }
    if (!g.data_pins.acceptsAll(r.data_pins)) {
        return HandleResult::NoPin;
    }
    if (g.pins_must_be_contiguous && !isContiguousBitset(r.data_pins)) {
        return HandleResult::NoPin;
    }
    if (r.protocol == Protocol::Spi) {
        if (!g.clock_pins.accepts(r.clock_pin)) {
            return HandleResult::NoPinPair;
        }
    }
    // Capacity: bulk requests consume one slot per set bit on this
    // group (the "ganged into one group" model). For "fan out across
    // independent groups" the resolver handles distribution at a higher
    // layer — this free function answers "does THIS group accept the
    // entire bitset?". Single-pin requests trivially fit (count=1
    // <= max_concurrent for any sane group).
    fl::u32 requested_count = r.data_pins.count();
    if (g.max_concurrent != 0u && requested_count > static_cast<fl::u32>(g.max_concurrent)) {
        return HandleResult::NoCapacity;
    }
    if (r.frequency_hz.has_value()) {
        FreqRange fr = effectiveFrequencyRange(caps, g);
        if (!fr.isUnspecified() && !fr.contains(*r.frequency_hz)) {
            return HandleResult::NoFrequency;
        }
    }
    if (r.protocol == Protocol::Clockless) {
        if (!isClocklessTimingCompatible(caps.clockless_timing, r.timing)) {
            return HandleResult::NoTiming;
        }
    }
    return HandleResult::Yes;
}

References fl::Clockless, fl::FreqRange::contains(), effectiveFrequencyRange(), fl::FL_NO_EXCEPT, fl::g, isClocklessTimingCompatible(), isContiguousBitset(), fl::FreqRange::isUnspecified(), fl::NoCapacity, fl::NoFrequency, fl::NoPin, fl::NoPinPair, fl::NoProtocol, fl::NoTiming, fl::Spi, and fl::Yes.

Referenced by fl::canMatch().

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