mlx90614

C++ implementation

// Tell XOD where it could download the library:
#pragma XOD require "https://github.com/adafruit/Adafruit-MLX90614-Library"

//Include C++ libraries
#include <Wire.h>
#include <Adafruit_MLX90614.h>

node {
    meta {
        // Define our custom type as a pointer on the class instance.
        using Type = Adafruit_MLX90614*;
    }

    uint8_t mem[sizeof(Adafruit_MLX90614)];
    
    void evaluate(Context ctx) {

        if (isSettingUp()) {
           auto address = getValue<input_ADDR>(ctx);
           Type sensor = new (mem) Adafruit_MLX90614(address);
            if (!sensor->begin()) {
                raiseError(ctx);
                return;
            }
        }

        if (isInputDirty<input_UPD>(ctx)) {
            auto sensor = reinterpret_cast<Adafruit_MLX90614*>(mem);
            emitValue<output_AmbC>(ctx, sensor->readAmbientTempC());
            emitValue<output_ObjC>(ctx, sensor->readObjectTempC());
            emitValue<output_DONE>(ctx, 1);
        }
    }
}