read-altitude

C++ implementation

#define SEALEVELPRESSURE_HPA (1013.25)

struct State {
};

{{ GENERATED_CODE }}

void evaluate(Context ctx) {
    // The node responds only if there is an input pulse
    if (!isInputDirty<input_UPD>(ctx))
        return;

    // Get a pointer to the `Adafruit_BME280` class instance
    auto bme = getValue<input_DEV>(ctx);
    emitValue<output_ALT>(ctx, bme->readAltitude(SEALEVELPRESSURE_HPA));
    emitValue<output_DONE>(ctx, 1);
}