weather-monitor-getWeatherData.c

char* WeatherService::getWeatherData() {
    serialPrintln();

    // Measure Relative Humidity from the HTU21D or Si7021
    float humidity = _sensor.getRH();

    // Measure Temperature from the HTU21D or Si7021
    float tempf = _sensor.getTempF();

    //Measure the Barometer temperature in F from the MPL3115A2
    // float baroTemp = _sensor.readBaroTempF();

    //Measure Pressure from the MPL3115A2 in Pascals
    // 1 Pa = 0.000295299830714 inHg (inches of Mercury)
    float pascals = _sensor.readPressure();
    float mmHg = pascals * 0.000295299830714;

    //If in altitude mode, you can get a reading in feet with this line:
    //altf = _sensor.readAltitudeFt();

    // get fuel guage and bundle with temperature data
    FuelGauge fuel;

    // get the avg wind speed and gust speed
    float gustMPH;
    float windMPH = getAnemometerMPH(&gustMPH);

    StaticJsonBuffer<400> jsonBuffer;

    JsonObject& root = jsonBuffer.createObject();
    root["h"] = humidity;
    root["t"] = tempf;
    root["p"] = mmHg;
    root["st"] = getSoilTemp(); // soil temp in degF
    root["m"] = getSoilMoisture(); // soil moisture level
    root["a"] = windMPH; // anemometer MPH
    root["d"] = getWindVaneDegrees(); // wind vane degrees
    root["r"] = getAndResetRainInches(); // rain gauge count
    root["v"] = fuel.getVCell(); // voltage
    root["c"] = fuel.getSoC(); // state of charge in %

    static char buffer[400];
    root.printTo(buffer, sizeof(buffer));
    return buffer;
}