switch-heater-off
wayland/sgp40-air-quality-sensor/switch-heater-off
Turn off heater to lower curent consumption. Next measurement will automatically reactivate the heater.
switch-heater-off
@/switch-heater-off
Turn off heater to lower curent consumption. Next measurement will automatically reactivate the heater.
DEV@/sgp40-device
An SGP40 device.
UPDpulse
Update.
OKpulse
Pulse if heater successfully switched off.
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);
// Attempt to switch off heater; if attempt fails emit error
if (!sensor->heaterOff()) {
raiseError(ctx);
return;
}
emitValue<output_OK>(ctx, 1);
}
}