measure-iaq
wayland/sgp30/measure-iaq
Take a single CO2/TVOC measurement.
measure-iaq
@/measure-iaq
Take a single CO2/TVOC measurement.
DEV@/sgp30-device
An SGP30 device.
UPDpulse
Update.
Donepulse
Pulse when a measurement has completed successfully.
TVOCnumber
Total volatile organic compounds (ppb).
CO2number
CO2 (ppm).
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;
auto sensor = getValue<input_DEV>(ctx);
if (! sensor->IAQmeasure()) {
raiseError(ctx);
return;
}
emitValue<output_CO2>(ctx, sensor->eCO2);
emitValue<output_TVOC>(ctx, sensor->TVOC);
emitValue<output_Done>(ctx, 1);
}
}