read-all-channels

wayland/as7341-spectrometer/read-all-channels

Read all channels and store measurements in an internal buffer. To retrieve a measurement for a specific channel, use the appropriate get-ch-* node.
read-all-channels
@/read-all-channels
Read all channels and store measurements in an internal buffer. To retrieve a measurement for a specific channel, use the appropriate get-ch-* node.
DEV@/as7341-device
An as7341-device.
UPDpulse
Update. Pulse triggers read.
read-all-channels
DEV
UPD
DONE
DONEpulse
Pulse on successful read.
To use the node in your project you should have the wayland/as7341-spectrometer 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;

       auto sensor = getValue<input_DEV>(ctx);

       if (!sensor->readAllChannels()) {
            raiseError(ctx);
            return;
       }

       emitValue<output_DONE>(ctx, 1);

    }
}