set-ambient-pressure

Measurements of carbon dioxide concentration based on the non-dispersive infrared (NDIR) principle are influenced by ambient pressure. Use this node to set the ambient pressure compensation of the SCD30. Ambient pressure value is saved in non-volatile memory. The last set value will be used for ambient pressure compensation after repowering. Setting the ambient pressure will overwrite previous and future settings of altitude compensation. Setting the MBAR input to zero will deactivate the ambient pressure compensation.

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 `SCD30` class instance
    auto airSensor = getValue<input_DEV>(ctx);

    airSensor->setAmbientPressure(getValue<input_MBAR>(ctx));
    emitValue<output_DONE>(ctx,1);

}