flex_sensor.h

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#include "sensor_converter_func.h"
#include "biquad.h"
 
 
class FlexConverter : public SensorConverter {
public:
    FlexConverter() {
        // Update rate is 50-150hz, so this actually filters at 0.5-1.5hz -3db depending on E%, which is ok
        m_filter.configureLowpass(100, 1);
    }
 
    SensorResult convert(float frequency) const override {
        // Sensor should only report 50-150hz, significantly outside that range indicates a problem
        // it changes to 200hz+ to indicate methanol "contamination"
        if (frequency < 45) {
            return UnexpectedCode::Low;
        }
 
        if (frequency > 155) {
            return UnexpectedCode::High;
        }
 
        float flexPct = clampF(0, frequency - 50, 100);
 
        return m_filter.filter(flexPct);
    }
 
private:
    mutable Biquad m_filter;
};