fix mhz19 calibration handler

include/sensor_mhz19b.cpp

@@ -66,25 +66,7 @@ void Sensor_MHZ19B::setSettings(float minchange, unsigned long senddelaymax, uns
 }
 
 
-bool Sensor_MHZ19B::mhz19calibrationHandler(const HomieRange& range, const String& value) {
+
-  if (range.isRange) {
-    return false; //if range is given but index is not in allowed range
-  }
-  Homie.getLogger() << "mhz19 calibration " << ": " << value << endl;
-  
-  if (value=="zero") {
-    mhz19->calibrateZero();
-    Homie.getLogger() << "mhz19 calibration " << ": " << value << endl;
-    #ifdef STATUSNODE
-    sensorNode->setProperty("status").send("MHZ19 Zero Calibration triggered");
-    #endif
-  } else {
-    Homie.getLogger() << "Value outside range" << endl;
-    return false;  
-  }
-  
-  return true;
-}
 
 //Called during setup
 void Sensor_MHZ19B::advertise(HomieNode& p_sensorNode)
@@ -92,7 +74,7 @@ void Sensor_MHZ19B::advertise(HomieNode& p_sensorNode)
     sensorNode = &p_sensorNode;
     sensorNode->advertise("co2");
     #ifdef MHZ19CALIBRATIONTOPIC      
-      sensorNode->advertise("mhz19calibration").settable(&Sensor_MHZ19B::mhz19calibrationHandler)); //not working!!! TODO: Fix it
+      sensorNode->advertise("mhz19calibration").settable(mhz19calibrationHandler);
     #endif
 }
 
@@ -169,4 +151,6 @@ int Sensor_MHZ19B::mhz19_readValue_reimplemented(Stream *_streamRef, MHZ19 *_mhz
   return co2;
 }
 
-
+void Sensor_MHZ19B::calibrateZero() {
+  mhz19->calibrateZero();
+}

include/sensor_mhz19b.h

@@ -33,7 +33,7 @@ private:
 
     
 
-    //#define MHZ19CALIBRATIONTOPIC  //TODO: fix it
+    #define MHZ19CALIBRATIONTOPIC
 
 public:
     Sensor_MHZ19B(int prx, int ptx);
@@ -41,10 +41,9 @@ public:
     void init();
     void setSettings(float minchange, unsigned long senddelaymax, unsigned long readdelay);
     void advertise(HomieNode& p_sensorNode);
-    void sensorloop();
+    void sensorloop();  
 
-    bool mhz19calibrationHandler(const HomieRange& range, const String& value);
+    void calibrateZero();
-    
 };
 
 #endif

src/main.cpp

@@ -21,6 +21,12 @@
 
 #define STATUSNODE
 
+
+// data/homie/config.json hochladen mit platformio run --target uploadfs
+// config contains homie device name, mqtt ip and wifi credentials
+
+HomieNode sensorNode("sensors", "Sensors","sensors");  //id, name, type
+
 #include "sensordata.h"
 
 
@@ -189,9 +195,30 @@
 #endif
 
 #ifdef SENSOR_MHZ19B
+  bool mhz19calibrationHandler(const HomieRange& range, const String& value);
   #include "sensor_mhz19b.cpp"
   Sensor_MHZ19B sensor_mhz19b(SENSOR_MHZ19B_SERIAL_RX,SENSOR_MHZ19B_SERIAL_TX);
 
+  bool mhz19calibrationHandler(const HomieRange& range, const String& value) {
+    if (range.isRange) {
+      return false; //if range is given but index is not in allowed range
+    }
+    Homie.getLogger() << "mhz19 calibration " << ": " << value << endl;
+    
+    if (value=="zero") {
+      sensor_mhz19b.calibrateZero();//mhz19->calibrateZero();
+      Homie.getLogger() << "mhz19 calibration " << ": " << value << endl;
+      #ifdef STATUSNODE
+      sensorNode.setProperty("status").send("MHZ19 Zero Calibration triggered");
+      #endif
+    } else {
+      Homie.getLogger() << "Value outside range" << endl;
+      return false;  
+    }
+    
+    return true;
+  }
+
   #ifndef SENSOR_MHZ19B_minchange
     #define SENSOR_MHZ19B_minchange 10.0
   #endif
@@ -317,12 +344,6 @@
   
 #endif
 
-// data/homie/config.json hochladen mit platformio run --target uploadfs
-// config contains homie device name, mqtt ip and wifi credentials
-
-
-
-HomieNode sensorNode("sensors", "Sensors","sensors");  //id, name, type
 
 char tempstring[16]; //for dtostrf