undefined reference when compiling the PS2X_example from Bill porter

Ralphy1976 · December 13, 2018, 9:31pm

Good evening,

I am trying to run the PS2X_example sketch using my wireless PS2 lynxmotion controller together with my arduino UNO.

I followed the instructions i found on arduino.cc with regards to downloading zip files and installing libraries, and i went onto github to get the PS2X_lib from Bill porter. Once unzipped, the Arduino-PS2X-Master folder is added automatically to my library folder. I checked that it was where it was supposed to be, and yes it is with all the other libraries i have already downloaded.

My setup is simple : Arduino UNO powered and nothing else. I just want to compile the PS2X_example sketch and see if i have any error messages before doing anything else.

To my surprise i have multiple error message, but they are all of the same flavour as you can read below.

Arduino: 1.8.7 (Mac OS X), Board: "Arduino/Genuino Uno"

/var/folders/g5/4wf76ps914j5sc59dw_rv66c0000gn/T//ccrTM0vO.ltrans0.ltrans.o: In function `setup':
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:44: undefined reference to `PS2X::config_gamepad(unsigned char, unsigned char, unsigned char, unsigned char, bool, bool)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:73: undefined reference to `PS2X::readType()'
/var/folders/g5/4wf76ps914j5sc59dw_rv66c0000gn/T//ccrTM0vO.ltrans0.ltrans.o: In function `loop':
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:100: undefined reference to `PS2X::read_gamepad()'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:102: undefined reference to `PS2X::ButtonPressed(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:104: undefined reference to `PS2X::ButtonPressed(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:106: undefined reference to `PS2X::ButtonPressed(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:108: undefined reference to `PS2X::ButtonPressed(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:110: undefined reference to `PS2X::ButtonPressed(unsigned int)'
/var/folders/g5/4wf76ps914j5sc59dw_rv66c0000gn/T//ccrTM0vO.ltrans0.ltrans.o:/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:113: more undefined references to `PS2X::ButtonPressed(unsigned int)' follow
/var/folders/g5/4wf76ps914j5sc59dw_rv66c0000gn/T//ccrTM0vO.ltrans0.ltrans.o: In function `loop':
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:116: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:118: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:121: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:123: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:126: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:132: undefined reference to `PS2X::read_gamepad(bool, unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:134: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:136: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:139: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:141: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:143: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:145: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:147: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:149: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:151: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:153: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:156: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:157: undefined reference to `PS2X::NewButtonState()'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:158: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:160: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:162: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:164: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:166: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:170: undefined reference to `PS2X::ButtonPressed(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:172: undefined reference to `PS2X::NewButtonState(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:174: undefined reference to `PS2X::ButtonReleased(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:177: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:177: undefined reference to `PS2X::Button(unsigned int)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:179: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:181: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:183: undefined reference to `PS2X::Analog(unsigned char)'
/Users/berthelot/Documents/Arduino/libraries/Arduino-PS2X-master/PS2X_lib/examples/PS2X_Example/PS2X_Example.ino:185: undefined reference to `PS2X::Analog(unsigned char)'
collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

I have looked at the PS2X_lib.h file and i can see that config_gamepad(), ButtonPressed(), Button(), read_gamepad(), Analog(), NewButtonState() and ButtonReleased() are declared in the class PS2X section of the code.

Has anyone come accross such strange message?

Thanks for your insight,
Ralphy

pert · December 13, 2018, 10:02pm

Post a link to where you got the library from. Please use the chain links icon on the forum toolbar to make it clickable.

Deva_Rishi · December 13, 2018, 10:04pm

Yes and please post the example code

Ralphy1976 · December 14, 2018, 6:07am

Alright,

The GITHUB folder where i downloaded the library is here :

GitHub - madsci1016/Arduino-PS2X: Read a Playstation 2 Gamepad or Guitar Hero Controller using an Arduino which has you can see has 159 stars.

As for the code, it is below, but you can also see it here code

#include <PS2X_lib.h>  //for v1.6

/******************************************************************
 * set pins connected to PS2 controller:
 *   - 1e column: original 
 *   - 2e colmun: Stef?
 * replace pin numbers by the ones you use
 ******************************************************************/
#define PS2_DAT        13  //14    
#define PS2_CMD        11  //15
#define PS2_SEL        10  //16
#define PS2_CLK        12  //17

/******************************************************************
 * select modes of PS2 controller:
 *   - pressures = analog reading of push-butttons 
 *   - rumble    = motor rumbling
 * uncomment 1 of the lines for each mode selection
 ******************************************************************/
//#define pressures   true
#define pressures   false
//#define rumble      true
#define rumble      false

PS2X ps2x; // create PS2 Controller Class

//right now, the library does NOT support hot pluggable controllers, meaning 
//you must always either restart your Arduino after you connect the controller, 
//or call config_gamepad(pins) again after connecting the controller.

int error = 0;
byte type = 0;
byte vibrate = 0;

void setup(){
 
  Serial.begin(57600);
  
  delay(300);  //added delay to give wireless ps2 module some time to startup, before configuring it
   
  //CHANGES for v1.6 HERE!!! **************PAY ATTENTION*************
  
  //setup pins and settings: GamePad(clock, command, attention, data, Pressures?, Rumble?) check for error
  error = ps2x.config_gamepad(PS2_CLK, PS2_CMD, PS2_SEL, PS2_DAT, pressures, rumble);
  
  if(error == 0){
    Serial.print("Found Controller, configured successful ");
    Serial.print("pressures = ");
	if (pressures)
	  Serial.println("true ");
	else
	  Serial.println("false");
	Serial.print("rumble = ");
	if (rumble)
	  Serial.println("true)");
	else
	  Serial.println("false");
    Serial.println("Try out all the buttons, X will vibrate the controller, faster as you press harder;");
    Serial.println("holding L1 or R1 will print out the analog stick values.");
    Serial.println("Note: Go to www.billporter.info for updates and to report bugs.");
  }  
  else if(error == 1)
    Serial.println("No controller found, check wiring, see readme.txt to enable debug. visit www.billporter.info for troubleshooting tips");
   
  else if(error == 2)
    Serial.println("Controller found but not accepting commands. see readme.txt to enable debug. Visit www.billporter.info for troubleshooting tips");

  else if(error == 3)
    Serial.println("Controller refusing to enter Pressures mode, may not support it. ");
  
//  Serial.print(ps2x.Analog(1), HEX);
  
  type = ps2x.readType(); 
  switch(type) {
    case 0:
      Serial.print("Unknown Controller type found ");
      break;
    case 1:
      Serial.print("DualShock Controller found ");
      break;
    case 2:
      Serial.print("GuitarHero Controller found ");
      break;
	case 3:
      Serial.print("Wireless Sony DualShock Controller found ");
      break;
   }
}

void loop() {
  /* You must Read Gamepad to get new values and set vibration values
     ps2x.read_gamepad(small motor on/off, larger motor strenght from 0-255)
     if you don't enable the rumble, use ps2x.read_gamepad(); with no values
     You should call this at least once a second
   */  
  if(error == 1) //skip loop if no controller found
    return; 
  
  if(type == 2){ //Guitar Hero Controller
    ps2x.read_gamepad();          //read controller 
   
    if(ps2x.ButtonPressed(GREEN_FRET))
      Serial.println("Green Fret Pressed");
    if(ps2x.ButtonPressed(RED_FRET))
      Serial.println("Red Fret Pressed");
    if(ps2x.ButtonPressed(YELLOW_FRET))
      Serial.println("Yellow Fret Pressed");
    if(ps2x.ButtonPressed(BLUE_FRET))
      Serial.println("Blue Fret Pressed");
    if(ps2x.ButtonPressed(ORANGE_FRET))
      Serial.println("Orange Fret Pressed"); 

    if(ps2x.ButtonPressed(STAR_POWER))
      Serial.println("Star Power Command");
    
    if(ps2x.Button(UP_STRUM))          //will be TRUE as long as button is pressed
      Serial.println("Up Strum");
    if(ps2x.Button(DOWN_STRUM))
      Serial.println("DOWN Strum");
 
    if(ps2x.Button(PSB_START))         //will be TRUE as long as button is pressed
      Serial.println("Start is being held");
    if(ps2x.Button(PSB_SELECT))
      Serial.println("Select is being held");
    
    if(ps2x.Button(ORANGE_FRET)) {     // print stick value IF TRUE
      Serial.print("Wammy Bar Position:");
      Serial.println(ps2x.Analog(WHAMMY_BAR), DEC); 
    } 
  }
  else { //DualShock Controller
    ps2x.read_gamepad(false, vibrate); //read controller and set large motor to spin at 'vibrate' speed
    
    if(ps2x.Button(PSB_START))         //will be TRUE as long as button is pressed
      Serial.println("Start is being held");
    if(ps2x.Button(PSB_SELECT))
      Serial.println("Select is being held");      

    if(ps2x.Button(PSB_PAD_UP)) {      //will be TRUE as long as button is pressed
      Serial.print("Up held this hard: ");
      Serial.println(ps2x.Analog(PSAB_PAD_UP), DEC);
    }
    if(ps2x.Button(PSB_PAD_RIGHT)){
      Serial.print("Right held this hard: ");
      Serial.println(ps2x.Analog(PSAB_PAD_RIGHT), DEC);
    }
    if(ps2x.Button(PSB_PAD_LEFT)){
      Serial.print("LEFT held this hard: ");
      Serial.println(ps2x.Analog(PSAB_PAD_LEFT), DEC);
    }
    if(ps2x.Button(PSB_PAD_DOWN)){
      Serial.print("DOWN held this hard: ");
      Serial.println(ps2x.Analog(PSAB_PAD_DOWN), DEC);
    }   

    vibrate = ps2x.Analog(PSAB_CROSS);  //this will set the large motor vibrate speed based on how hard you press the blue (X) button
    if (ps2x.NewButtonState()) {        //will be TRUE if any button changes state (on to off, or off to on)
      if(ps2x.Button(PSB_L3))
        Serial.println("L3 pressed");
      if(ps2x.Button(PSB_R3))
        Serial.println("R3 pressed");
      if(ps2x.Button(PSB_L2))
        Serial.println("L2 pressed");
      if(ps2x.Button(PSB_R2))
        Serial.println("R2 pressed");
      if(ps2x.Button(PSB_TRIANGLE))
        Serial.println("Triangle pressed");        
    }

    if(ps2x.ButtonPressed(PSB_CIRCLE))               //will be TRUE if button was JUST pressed
      Serial.println("Circle just pressed");
    if(ps2x.NewButtonState(PSB_CROSS))               //will be TRUE if button was JUST pressed OR released
      Serial.println("X just changed");
    if(ps2x.ButtonReleased(PSB_SQUARE))              //will be TRUE if button was JUST released
      Serial.println("Square just released");     

    if(ps2x.Button(PSB_L1) || ps2x.Button(PSB_R1)) { //print stick values if either is TRUE
      Serial.print("Stick Values:");
      Serial.print(ps2x.Analog(PSS_LY), DEC); //Left stick, Y axis. Other options: LX, RY, RX  
      Serial.print(",");
      Serial.print(ps2x.Analog(PSS_LX), DEC); 
      Serial.print(",");
      Serial.print(ps2x.Analog(PSS_RY), DEC); 
      Serial.print(",");
      Serial.println(ps2x.Analog(PSS_RX), DEC); 
    }     
  }
  delay(50);  
}

Thanks for the help, much appreciated
Ralphy

Deva_Rishi · December 14, 2018, 8:41am

Compiles just fine for me ! no issues.

Deva_Rishi · December 14, 2018, 8:52am

Ralphy1976:
Once unzipped, the Arduino-PS2X-Master folder is added automatically to my library folder. I checked that it was where it was supposed to be, and yes it is with all the other libraries i have already downloaded.

The library is in a sub-folder called 'PS2X_lib' this folder should be in your libraries folder not the 'Arduino-PS2X-Master' (I actually think it's the '-' causing the problem, with me it couldn't even find the 'PS2X_lib.h'

Ralphy1976 · December 14, 2018, 9:03am

Thanks for the help, i appreciate it. I have done what you suggested and moved folders around following your advice.

Here is a screenshot of what my arduino folder.

I have re-opened the example file with its new locations, unfortunately same result.

Ralphy1976 · December 14, 2018, 9:08am

I just saw why it wasn't working this time around, i forgot to add the .h file to the new folder i had moved.

It compiled perfectly now.

Thanks for the help, much appreciated.

ralphy

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undefined reference when compiling the PS2X_example from Bill porter

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