detect-flicker
wayland/as7341-spectrometer/detect-flicker
Detect a flickering light.
detect-flicker
@/detect-flicker
Detect a flickering light.
DEV@/as7341-device
An as7341-device.
UPDpulse
Update.
DONEpulse
Pulse on read.
Hznumber
The frequency of a detected flicker or 1 if a flicker of unknown frequency is detected.
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);
emitValue<output_Hz>(ctx, sensor->detectFlickerHz());
emitValue<output_DONE>(ctx, 1);
}
}