1

I created 4 libraries, each in .h and .cpp files, and tested them individually. I kept the project flexibility by defining 3 flags that allow or disallow the usage of the libraries.

When integrating them into project I received linking errors. During the debugging I reduced it to minimum - a single .ino file that contains the minimal declarations and calls; but the error messages are still fired.

I looked at the shrunk code (only 63 lines!) and saw no issue. I'd appreciate any help in finding the issue. enter image description here

The code:

#define RadioIncluded  
#define IrrigationStation  
#define RTCincluded

/********************************************/


#ifdef RTCincluded

  class rtcHighLevel
  {
    public: 
      String rtcInterpreter(String cmd);
  };
  rtcHighLevel rtc;
#endif


#ifdef IrrigationStation
class measureEC
{
  public:
  void   initMeasurementStation ();
    String SD12_Parser (String commandLine);
};
  measureEC soilParams;


class valveControl
{
  public:
    void   valveInit();
};
  valveControl valve;
#endif


#ifdef RadioIncluded

  class LoRaAddClass
  {
    public:
      void   LoRaBegin(long BAND);
  };
  LoRaAddClass LoRaAdd;
#endif


/*********************************************************/
void setup() {
  Serial.begin(9600);
  while (!Serial) {};


#ifdef RadioIncluded

  LoRaAdd.LoRaBegin(915000000);
#endif


#ifdef IrrigationStation

  valve.valveInit();
  soilParams.initMeasurementStation();
#endif


#ifdef RTCincluded

  String s = rtc.rtcInterpreter("A");
#endif
}
/*********************************************************/
void loop() {}
user1511360
  • 61
  • 3

1 Answers1

1

Solved: while initially I devoted sub-directory for every class, no issues when all the classes were brought to the same folder with the INO file all the issues disappeared. Is this a known issue?

user1511360
  • 61
  • 3