initializeControllerIfNeeded()

bool fl::SpiChannelEngineAdapter::initializeControllerIfNeeded ( ControllerInfo & ctrl, int clockPin, int dataPin, u32 clockSpeedHz )

private

Initialize controller if needed for this clock pin.

Parameters

ctrl	Controller to initialize
clockPin	Clock pin for configuration
dataPin	Data pin for configuration
clockSpeedHz	Requested SPI clock rate

Returns

true on success, false on error

Definition at line 154 of file spi_channel_adapter.cpp.hpp.

                                                                                    {
 
    if (ctrl.isInitialized) {
        if (!ctrl.assignedClockPins.empty() &&
            ctrl.assignedClockPins[0] == clockPin &&
            ctrl.configuredDataPin == dataPin &&
            ctrl.configuredClockSpeedHz == clockSpeedHz) {
            return true;
        }
        ctrl.controller->end();
        ctrl.isInitialized = false;
        ctrl.assignedClockPins.clear();
    }
 
    // Initialize controller based on lane count
    u8 lanes = ctrl.controller->getLaneCount();
 
    if (lanes == 1) {
        SpiHw1::Config config;
        config.bus_num = static_cast<fl::u8>(ctrl.controller->getBusId());
        config.clock_pin = clockPin;
        config.data_pin = dataPin;
        config.clock_speed_hz = clockSpeedHz;
        config.max_transfer_sz = 65536;
 
        if (!ctrl.controller->begin(&config)) {
            FL_WARN("SpiChannelEngineAdapter: Failed to initialize " << ctrl.name);
            return false;
        }
    } else {
        // TODO: Multi-lane initialization (SpiHw2/4/8/16)
        FL_WARN("SpiChannelEngineAdapter: Multi-lane init not yet implemented");
        return false;
    }
 
    ctrl.isInitialized = true;
    ctrl.configuredDataPin = dataPin;
    ctrl.configuredClockSpeedHz = clockSpeedHz;
    ctrl.assignedClockPins.push_back(clockPin);
 
    FL_DBG("SpiChannelEngineAdapter: Initialized " << ctrl.name << " with clock pin " << clockPin);
 
    return true;
}

References FL_DBG, fl::FL_NO_EXCEPT, and FL_WARN.

Referenced by transmitBatch().

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