GP2Y0A02.cpp

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#include "GP2Y0A02.hpp"
 
namespace
{
const auto kMinDistance = 25;  // GP2Y0A02's minimum distance
const auto kMaxDistance = 120; // GP2Y0A02's maximum distance
} // namespace
 
GP2Y0A02::GP2Y0A02(Runtime& runtime, uint8_t pin)
    : InfraredAnalogSensor(runtime)
    , kPin{ pin }
    , mRuntime(runtime)
{
}
 
unsigned int GP2Y0A02::getDistance()
{
    auto analogReading = mRuntime.getAnalogPinState(kPin);
    // It's OK to surpress this clang-tidy warning since this is part of a magic (!) formula
    // NOLINTNEXTLINE(readability-magic-numbers)
    auto result = static_cast<unsigned int>(9462 / (analogReading - 16.92));
 
    return (result >= kMinDistance && result <= kMaxDistance ? result : 0);
}