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

Adafruit_HTU21DF htu = Adafruit_HTU21DF();

#define I2C_SDA 22
#define I2C_SCL 27


bool F_HTU_21D;
float K_HTU= -0.00;

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

void init_HTU21(){
    Wire.begin(I2C_SDA, I2C_SCL);
    F_HTU_21D = false;
    if (!htu.begin()) {
        Serial.println("Couldn't find sensor HUT21D!");
        //SystemStatus = SystemStatus | HTU21noReady;
    
    }else{
        F_HTU_21D = true;
        Serial.println("HUT21D gefunden");
    }
    
}

float read_HTU21D() {
    float t = htu.readTemperature();
    //t = t + KorrekturTemperaturHTU;
    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.print(" °C\t");
    tft.drawString("Temperatur:    ", 1, x, 4);
    tft.drawFloat(t, 1.0,190, x,4);
    tft.drawString("o", 252, x, 1);
    tft.drawString("C", 260, x, 4);

    Serial.println(t,8);
    Serial.print("Luftfeuchtigkeit:\t");
    Serial.print(htuData.humity);
    Serial.println(" %");
    tft.drawString("Luftfeuchtigkeit: ", 1, x +=25, 4);
    tft.drawFloat(h, 1.0,190, x, 4);
    tft.drawString("%", 252, x, 4);
    x = 100;
    return t;
}

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); */
}