publishTemperatureHumidity.ino

#include "Adafruit_Si7021.h"

Adafruit_Si7021 sensor = Adafruit_Si7021();

double h;
double t;

void setup() {
    sensor.begin();

    Particle.variable("t", &t, DOUBLE);
    Particle.variable("h", &h, DOUBLE);
}

void loop() {
    h = sensor.readHumidity();
    t = sensor.readTemperature();

    Particle.publish("temperature", String::format("%1.2f", t), PRIVATE);
    Particle.publish("humidity", String::format("%1.2f", h), PRIVATE);
 
    delay(1800000);
}