read-pressure

wayland/bme280-barometer/read-pressure

Read pressure in Pascal.
read-pressure
@/read-pressure
Read pressure in Pascal.
DEV@/bme280-device
A BME280 device.
UPDpulse
Update. Trigger read.
read-pressure
PRESS
DONE
DEV
UPD
DONEpulse
Pulse on read.
PRESSnumber
Atmospheric pressure in Pascal.
To use the node in your project you should have the wayland/bme280-barometer library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.

C++ implementation

#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_UPD

node {
    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 sensor = getValue<input_DEV>(ctx);
        emitValue<output_PRESS>(ctx, sensor->readPressure());
        emitValue<output_DONE>(ctx, 1);
    }
}