Unidentified reference to linker error

[kash84]

Hi, I'm a first time poster and haven't touched any type of programming in years. I'm hoping that I'm just missing something simple. I should note that the code is not originally mine and is being used by permission of the original creator, Mancave Effects. I cannot seem to find the TEA5767radio.h header in the Arduino IDE library so created a local copy of it. I get a "undefined reference to `TEA5767Radio::setFrequency(float)'" for all three instances of attempting to use a function declared in the header.

Header:

#include <Wire.h>

#ifndef TEA5767Radio_h
#define TEA5767Radio_h


class TEA5767Radio
{
private:
	int _address;

public:
  TEA5767Radio();
  TEA5767Radio(int address);
  void setFrequency(float frequency);
  void setFrequency();
};

#endif

Program:

#include <TEA5767.h>
#include <TM1637Display.h>
#include <Wire.h>
#include "TEA5767Radio.h"

TEA5767Radio radio = TEA5767Radio();


int switchPin = 2;                    // Switch for tuning Up
int switchPin1 = 3;                   // Switch for tuning Random
int switchPin2 = 4;                   // Switch for tuning Down
int potPin = A2;                      // scan speed Potentiometer
int val = 0;
int senseLimit = 15;                  // raise this number to decrease sensitivity (up to 1023 max)
int probePin = A0;                    // analog 5




bool running = false;
const int CLK = 12; // Display clk
const int DIO = 11; // Display dio
long randNumber;
TM1637Display display(CLK, DIO);

void setup()
{
  Serial.begin(9600);
  pinMode(switchPin, INPUT);                //defines switchpin as Input
  digitalWrite(switchPin, HIGH);
  pinMode(switchPin1, INPUT);               //defines switchpin as Input
  digitalWrite(switchPin1, HIGH);
  pinMode(switchPin2, INPUT);               //defines switchpin as Input
  digitalWrite(switchPin2, HIGH);
  unsigned char buf[5];
  Wire.begin();
  display.setBrightness(0x0a);               //set the diplay to maximum brightness
  randomSeed(analogRead(0));

}
void(* resetFunc) (void) = 0;                //declare reset function @ address 0
void loop ()
{
  if (digitalRead(switchPin1) == LOW)
  { randNumber = random(80.1, 110.1);        //radio scans random number from freq. 80.1-110.1
    radio.setFrequency(randNumber);
    display.showNumberDec(randNumber, false);
    val = analogRead(potPin);                // read the value from the sensor
    delay(val);                              // map potentiometer value to delay
    if

    (digitalRead(switchPin1) == HIGH) {

    display.showNumberDec(0000);
    resetFunc();                             //reset arduino board
    }
  }

  if (digitalRead(switchPin) == LOW)
    for ( int i = 750 ; i < 1100 ; i++ ) {
      float freq1 = i / 10.0 ;
      radio.setFrequency(freq1); 
      display.showNumberDec(i);
      val = analogRead(potPin);              // read the value from the sensor
      delay(val);                            // map potentiometer value to delay
  if
     (digitalRead(switchPin) == HIGH) {
      display.showNumberDec(0000);
      resetFunc();                           //reset arduino board
      }
    }
  if (digitalRead(switchPin2) == LOW)
   { 
    for ( int i = 1100 ; i > 750 ; i-- ) {
      float freq1 = i / 10.0 ;
      radio.setFrequency(freq1); 
      display.showNumberDec(i);
      val = analogRead(potPin);    
      delay(val);                  
      if
      (digitalRead(switchPin2) == HIGH) {
       display.showNumberDec(0000);
       resetFunc();
      }}}}

Error:
C:\Users\kshir\AppData\Local\Temp\ccRxNzBc.ltrans0.ltrans.o: In function global constructors keyed to 65535_0_SpiritBox_Main.ino.cpp.o.3374': <artificial>:(.text.startup+0x78): undefined reference to TEA5767Radio::TEA5767Radio()'
C:\Users\kshir\AppData\Local\Temp\ccRxNzBc.ltrans0.ltrans.o: In function loop': C:\Users\kshir\Downloads\The Ultimate GD\The Ultimate GD\Arduino\SpiritBox_Main/SpiritBox_Main.ino:50: undefined reference to TEA5767Radio::setFrequency(float)'
C:\Users\kshir\Downloads\The Ultimate GD\The Ultimate GD\Arduino\SpiritBox_Main/SpiritBox_Main.ino:66: undefined reference to TEA5767Radio::setFrequency(float)' C:\Users\kshir\Downloads\The Ultimate GD\The Ultimate GD\Arduino\SpiritBox_Main/SpiritBox_Main.ino:80: undefined reference to TEA5767Radio::setFrequency(float)'
collect2.exe: error: ld returned 1 exit status

exit status 1

Compilation error: exit status 1

I appreciate any help I can get in resolving this error.

Thanks,

Kash

[Juraj]

and where is the function?

[ibuildrobots]

Do you have a TEA5767radio.cpp file to go along with that TEA5767radio.h?

[kash84]

Haven't done programming in so long, completely forgot about the function itself! Thank you both, I'll get back to it tomorrow and setup the cpp file and define the function.

Thanks again,

Kash