To use the node in your project you should have the wayland/max31855 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
// Tell XOD where it could download the library:
#pragma XOD require "https://github.com/adafruit/Adafruit-MAX31855-library"
//Include C++ libraries
#include <SPI.h>
#include <Adafruit_MAX31855.h>
node {
meta {
using Type = Adafruit_MAX31855*;
}
static_assert(isValidDigitalPort(constant_input_SCLK), "must be a valid digital port");
static_assert(isValidDigitalPort(constant_input_CS), "must be a valid digital port");
static_assert(isValidDigitalPort(constant_input_MISO), "must be a valid digital port");
Adafruit_MAX31855 thermocouple = Adafruit_MAX31855(constant_input_SCLK, constant_input_CS, constant_input_MISO);
void evaluate(Context ctx) {
if (isSettingUp()) {
if (!thermocouple.begin()) {
raiseError(ctx);
return;
}
}
if (isInputDirty<input_UPD>(ctx)) {
emitValue<output_tempC>(ctx, thermocouple.readCelsius());
emitValue<output_DONE>(ctx, 1);
}
}
}