Wetterstation_Boris/include/mcp9808.h

#include <Arduino.h>
/*  Daten:
 *  Temperaturbereich -40 bis 125°C
 *  Genauigkeit: ± 0,25°C
 *  Auflösung: 0,0625°C
 */
#include <Wire.h>
#include "Adafruit_MCP9808.h"
float valTemp;

// Create MCP9808 temperature sensor object
Adafruit_MCP9808 tempsensor = Adafruit_MCP9808();

bool F_MCP9808;

char Temperature[15] = {0};

void init_MCP9808(){
  F_MCP9808 = true;
    // Make sure the sensor is found, you can also pass in a different i2c
  // address with tempsensor.begin(0x19) for example, also can be left in blank for default address use
  // Also there is a table with all addres possible for this sensor, you can connect multiple sensors
  // to the same i2c bus, just configure each sensor with a different address and define multiple objects for that
  //  A2 A1 A0 address
  //  0  0  0   0x18  this is the default address
  //  0  0  1   0x19
  //  0  1  0   0x1A
  //  0  1  1   0x1B
  //  1  0  0   0x1C
  //  1  0  1   0x1D
  //  1  1  0   0x1E
  //  1  1  1   0x1F
  if (!tempsensor.begin(0x18)) {
    Serial.println("MCP9808 not connected!");
    SystemStatus = SystemStatus | MCP9808noReady;
    F_MCP9808 = false;
   
  }
  //Serial.println("Found MCP9808!");
  tempsensor.setResolution(3); // sets the resolution mode of reading, the modes are defined in the table bellow:
  // Mode Resolution SampleTime
  //  0    0.5°C       30 ms
  //  1    0.25°C      65 ms
  //  2    0.125°C     130 ms
  //  3    0.0625°C    250 ms
}


float getTemperature_MCP9808(){
   // Wake up MSP9808 - power consumption ~200 mikro Ampere
  tempsensor.wake();
  float temperature = tempsensor.readTempC();
  tempsensor.shutdown();
  dtostrf(temperature,7,1,Temperature);
  Serial.print("Temperatur (MCP9808):\t");
  Serial.print(Temperature);
  Serial.println(" °C");
  tempsensor.shutdown_wake(1); // shutdown MSP9808 - power consumption ~0.1 mikro Ampere, stops temperature sampling
  return temperature;
}

void M2M_Temperatur_MCP9808(String deviceId = "4711") {
    char topic[100];
    dtostrf(valTemp,7,1,Temperature);
    sprintf(topic, "%s%s%s", "hjk/devices/", deviceId.c_str(), "/telemetry/temperature_MCP9808");
    client.publish(topic, Temperature, true);
}
void Clear_MCP9808(String deviceId = "4711") {
  char topic[100];
  char test[1] = "";
  sprintf(topic, "%s%s%s", "hjk/devices/", deviceId.c_str(), "/telemetry/temperature_MCP9808");
  client.publish(topic, test, false);
  delay(50);
}