Initialize SCD4X device. The SCD4X device is in idle mode on initialization.
init
@/init
Initialize SCD4X device. The SCD4X device is in idle mode on initialization.
DEV@/scd4x-device
An SCD4X device.
I2Cxod/i2c/i2c
I²C bus
INITpulse
Initialize.
OKpulse
Pulse on successful initialization.
To use the node in your project you should have the wayland/scd4x-co2-rh-temp 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_INIT
node {
void evaluate(Context ctx) {
// The node responds only if there is an input pulse
if (!isInputDirty<input_INIT>(ctx))
return;
auto sensor = getValue<input_DEV>(ctx);
auto wire = getValue<input_I2C>(ctx);
// Initialize SCD4X device with user specified I2C interface
sensor->begin(*wire);
auto sensorError = sensor->stopPeriodicMeasurement();
if (sensorError) {
raiseError(ctx);
return;
}
emitValue<output_OK>(ctx, 1);
}
}