Mozzi and wire errors

Using Arduino Audio
1

hello iam trying to make a digital synth i made a rough ui for a oled display (128x64) but when i add mozzi i get the errors In function twi_init': (.text+0x0): multiple definition of __vector_24' and first defined here
collect2.exe: error: ld returned 1 exit status i think it has something to do with timers but dont know for sure thx alot

2

Post your entire program in a code block </>

3 
#include <Wire.h>
#include "PCF8591.h" // https://github.com/overbog/PCF8591
#include "MozziGuts.h"
#include "U8glib.h"

PCF8591 pcf8591(0x48,0);

U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE|U8G_I2C_OPT_DEV_0); 

int pot;
int pot2;
int pot3;
int pot4;
int oldVal3;
int val;
int barSize;
int barSize2;
int barSize3;
int barSize4;
int barSize4Procent;
double y;
double i;
double time;
double oldTime;
bool volumeMenuShow = false;

////////////////////////////////////////////////////////////////
void setup() {
  startMozzi();
  Serial.begin(9600);
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);
  pinMode(A2, INPUT);
  pinMode(A3, INPUT);

  int oldVal3 = analogRead(A3);

  Wire.begin();
  pcf8591.begin();
    
  u8g.setFont(u8g_font_6x10);
  u8g.setColorIndex(1);                         // Instructs the display to draw with a pixel on.



  // assign default color value

  if ( u8g.getMode() == U8G_MODE_R3G3B2 ) {

    u8g.setColorIndex(255);                     // white

  }

  else if ( u8g.getMode() == U8G_MODE_GRAY2BIT ) {

    u8g.setColorIndex(3);                       // max intensity

  }

  else if ( u8g.getMode() == U8G_MODE_BW ) {

    u8g.setColorIndex(1);                       // pixel on

  }

  else if ( u8g.getMode() == U8G_MODE_HICOLOR ) {

    u8g.setHiColorByRGB(255,255,255);

  }
}

void loop() {

  pot = analogRead(A0);  
  pot2 = analogRead(A1);             
  pot3 = analogRead(A2);
  pot4 = analogRead(A3);

  barSize = map(pot, 0, 1023, 0, 100);
  barSize2 = map(pot2, 0, 1023, 5, 122);
  barSize3 = map(pot3, 0, 1023, 0, 100);
  barSize4 = map(pot4, 0, 1023, 0, 127);
  barSize4Procent = map(barSize4, 0, 127, 0, 100);
  int diff = abs(barSize4 - oldVal3);
  if(diff >= 2 && time-oldTime <= 1000) {
    
    time = millis();
    oldVal3 = barSize4;
    volumeMenuShow = true;
    oldTime = time;
  } else {
    volumeMenuShow = false;
    time = 0;
    oldTime = time;
  }

  u8g.firstPage(); 

  do {  
    if (volumeMenuShow == true)  {
      u8g.drawStr(10,10,"Volume:");
      u8g.setPrintPos(55, 10);
      u8g.print(barSize4Procent);
      u8g.drawBox(0,27,barSize4,10);
    } else if (barSize <= 25) {
      u8g.drawLine(0, 32, 63, 0);
      u8g.drawLine(63, 0, 63, 63);
      u8g.drawLine(63, 63, 127, 32);
    } else if (barSize > 25 && barSize <= 50) {
      u8g.drawLine(0, 32, 32, 0);
      u8g.drawLine(32, 0, 96, 63);
      u8g.drawLine(96, 63, 127, 32);
    } else if (barSize > 50 && barSize <= 75) {
      u8g.drawLine(0, 0, 0, 63);
      u8g.drawLine(0, 0, barSize2, 0);
      u8g.drawLine(barSize2, 0, barSize2, 63);
      u8g.drawLine(barSize2, 63, 127, 63);
    } else if (barSize > 75 && barSize <= 100) {
        for (i=0; i<=127; i++) {
          y = round(-sin(i/128*360 * M_PI / 180) * 128*63/256);
          u8g.drawPixel(i, y+32);
        }
      
    } 
    
    

  }

  while( u8g.nextPage() );

}

code ^^^

C:\Users\xyz\AppData\Local\Temp\arduino-sketch-46E99FEDF9BC32524453F70248C513B2\libraries\Mozzi-master\twi_nonblock.cpp.o (symbol from plugin): In function `initialize_twi_nonblock()':
(.text+0x0): multiple definition of `__vector_24'
C:\Users\xyz\AppData\Local\Temp\arduino-sketch-46E99FEDF9BC32524453F70248C513B2\libraries\Wire\utility\twi.c.o (symbol from plugin):(.text+0x0): first defined here
collect2.exe: error: ld returned 1 exit status

errors ^^^

4

There is a compatibility issue between your Mozziguts library and the Wire library.

5

how can i use them both at the same time? or cant i?

6

Mozziguts might already use Wire. Try commenting out the include for Wire.

7

This is an interrupt vector (which one depends on the processor). This is a linker error telling you there are 2 things in your code trying to attach themselves to the same interrupt (ie, there is a clash). Usually this is not an easy fix unless you can find an alternative library that uses another interrupt.

8

I need mozzi bc i think there is no other capable synthesis lib but is there a alternativr to wire?

9

Looks like the Mozzi library has its own Two Wire Interface (I2C) library built-in:
libraries\Mozzi-master\twi_nonblock.cpp

10

Ow oke thx

11

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