Wetterstation_Boris/include/mess_htu21.h

#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_I2CDevice.h>
#include <Adafruit_HTU21DF.h>

Adafruit_HTU21DF htu = Adafruit_HTU21DF();

bool F_HTU_21D;
float K_HTU= -0.00;

struct {
  char temperature[15] = {0};
  char humity[15] = {0};
} htuData;

void init_HTU21(){
    F_HTU_21D = false;
    if (!htu.begin()) {
        Serial.println("Couldn't find sensor HUT21D!");
        SystemStatus = SystemStatus | HTU21noReady;
    
    }
    F_HTU_21D = true;
    Serial.println("HUT21D gefunden");
}

void read_HTU21D() {
    float t = htu.readTemperature();
    t = t + K_HTU;
    dtostrf(t,7,1,htuData.temperature);
    float h = htu.readHumidity();
    dtostrf(h,7,1,htuData.humity);
    Serial.print("Temperature (HTU21D):\t");
    Serial.print(htuData.temperature);
    Serial.println(" °C");
    Serial.print("Luftfeuchtigkeit:\t");
    Serial.print(htuData.humity);
    Serial.println(" %");

}

void M2M_HTU21D(String deviceId = "4711") {
    char topic[100];
    sprintf(topic, "%s%s%s", "hjk/devices/", deviceId.c_str(), "/telemetry/temperature_Htu_21" );
    client.publish(topic, htuData.temperature, true);
    sprintf(topic, "%s%s%s", "hjk/devices/", deviceId.c_str(), "/telemetry/humity" );
    client.publish(topic, htuData.humity, true);
    /* Serial.printf("HTU21:\t\t %s °C\n", htuData.temperature);
    Serial.printf("HTU21:\t\t %s %%\n", htuData.humity); */
}