2025-03-2600

include/mcp9808.h

@@ -0,0 +1,67 @@
+#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("Couldn't find MCP9808! Check your connections and verify the address is correct.");
+    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);
+}