fix: UnoQ support for I2C priority function

[dido18]

Motivation

Fix compilation failure for UnoQ when both Modulino and Arduino_LED_Matrix libraries are included.

How to reproduce

• Modulino 0.6.0
• arduino:zephyr 0.51.0

Example sketch that triggers the error:

#include <Modulino.h>
#include "Arduino_LED_Matrix.h"

void setup() {
  Modulino.begin();
}

void loop() {}

Error

/home/arduino/.cache/arduino/sketches/01A8778A6FDBF10D480441898938F9AD/sketch/sketch.ino.cpp.o: in function `ModulinoClass::begin(arduino::HardwareI2C&)':
/home/arduino/ArduinoApps/scratch-arduino-app/sketch/Arduino_Modulino/src/Modulino.h:46: undefined reference to `__increaseI2CPriority()'
collect2: error: ld returned 1 exit status

Root Cause

Modulino.cpp incorrectly handles the conditional logic for defining __increaseI2CPriority.
When Arduino_LED_Matrix.h is included but ARDUINO_UNOR4_WIFI is not defined (e.g., compiling for UnoQ), neither branch provides a definition for the function, resulting in an undefined reference.

Fix

Ensure that there is always at least one definition of __increaseI2CPriority. If UnoQ the void definition is added.

[dido18]

Tested on UNOQ

#include <Modulino.h>
#include "Arduino_LED_Matrix.h"

Arduino_LED_Matrix matrix;
ModulinoButtons buttons;

uint8_t shades[104] = {
	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	0,	
	1,	1,	1,	1,	1,	1,	1,	1,	1,	1,	1,	1,	1,
	2,	2,	2,	2,	2,	2,	2,	2,	2,	2,	2,	2,	2,
	3,	3,	3,	3,	3,	3,	3,	3,	3,	3,	3,	3,	3,
	4,	4,	4,	4,	4,	4,	4,	4,	4,	4,	4,	4,	4,
	5,	5,	5,	5,	5,	5,	5,	5,	5,	5,	5,	5,	5,
	6,	6,	6,	6,	6,	6,	6,	6,	6,	6,	6,	6,	6,
	7,	7,	7,	7,	7,	7,	7,	7,	7,	7,	7,	7,	7,
};

void setup() {
  Modulino.begin(Wire1);
  buttons.begin();
  matrix.begin();
}

void loop() {
   if (buttons.update()) {
    if (buttons.isPressed('A')) {
       matrix.clear();
    }
     if (buttons.isPressed('B')) {
       matrix.draw(shades);
    }
  }
}

[dido18]

Tested on UNO R4 with this sketch

#include "Arduino_LED_Matrix.h"   // Include the LED_Matrix library
#include "frames.h"               // Include a header file containing some custom icons
#include <Modulino.h>

ModulinoButtons buttons;
ArduinoLEDMatrix matrix;          // Create an instance of the ArduinoLEDMatrix class

void setup() {
  Serial.begin(115200);           // Initialize serial communication at a baud rate of 115200
  matrix.begin();                 // Initialize the LED matrix
  Modulino.begin();
  buttons.begin();
}

void loop() {
  if (buttons.update()) {
    if (buttons.isPressed('A')) {
       matrix.loadFrame(LEDMATRIX_HEART_BIG);
    } else if (buttons.isPressed("B")) {
      matrix.clear();
    }
  }
}