FlowSensor.cpp

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#include <Arduino.h>
 
#include "FlowSensor.h"
#include "imath.h"
 
FlowSensor::FlowSensor(uint8_t pin) : pin(pin) {}
 
double FlowSensor::readFlowrate() const {
    double value = analogRead(pin);
 
    // Calculate flowrate from voltage using polynomial approximation
    return ( coeffs[0] * ipow(value, 5)
           + coeffs[1] * ipow(value, 4)
           + coeffs[2] * ipow(value, 3)
           + coeffs[3] * ipow(value, 2)
           + coeffs[4] * value
           + coeffs[5]);
}