#include <phyphoxBle.h> 

int AnalogPin=27;
float Messwert;
float Offset;
float Magnetfeld;

void setup() {
    PhyphoxBLE::start("Magnetfeldsensor_01");                //Start the BLE server

//Experiment
    PhyphoxBleExperiment experiment;

    experiment.setTitle("Magnetfeld");
    experiment.setCategory("Arduino Experiments");
    experiment.setDescription("Plot the magnetic field of a Hall sensor over time.");

    //View
    PhyphoxBleExperiment::View view;

    //Value
    PhyphoxBleExperiment::Value Value1;      
    Value1.setLabel("B = ");                            
    Value1.setUnit("mT");                     
    Value1.setChannel(1);

    //Graph
    PhyphoxBleExperiment::Graph graph;
    graph.setLabel("B over time");
    graph.setUnitX("s");
    graph.setUnitY("mT");
    graph.setLabelX("time");
    graph.setLabelY("B");

 
    view.addElement(graph);                 //Attach graph to view
    view.addElement(Value1);
    experiment.addView(view);               //Attach view to experiment
    PhyphoxBLE::addExperiment(experiment);  //Attach experiment to server

    //Offsetkorrektur  
  Offset=0;
  for(int i=0;i<7;i++){
    Offset+=analogRead(AnalogPin);
    delay(10);
  }
  Offset=Offset/7;

}

void loop() {
//  Messwert=0;
//  for(int i=0;i<37;i++){
//    Messwert+=analogRead(AnalogPin);
//delay(10);
//  }
//  Messwert=Messwert/37;

 Messwert=analogRead(AnalogPin);
 Magnetfeld=(Messwert-Offset)*(-0.0492);
 PhyphoxBLE::write(Magnetfeld);
 delay(50);
}