Machine Control with OLED Display I2C (LCD)

Official Hardware Pro Solutions Portenta Machine Control
1

Hello,

I tried to connect an LCD display to the I2C of the machine control port. I was able to connect it successfully and display some values using the Arduino Mega with the following libraries: #include <LCD.h> and #include <LiquidCrystal_I2C.h>. However, when I tested the same code on the Arduino Machine Control, it did not work.

Has anyone successfully used this library with the Portenta Machine Control? Alternatively, can someone suggest a library that can be used with the onboard I2C for an LCD or OLED display? I am using the LCD2004 with an I2C converter and the OLED display AL4002A.

Thank you!

2

Update:
I use the library hd44780--> io class --> i2cExp --> Hello Word.
it work fine :slight_smile:

#include <Wire.h>
#include <hd44780.h>                        // main hd44780 header
#include <hd44780ioClass/hd44780_I2Cexp.h>  // i2c expander i/o class header

hd44780_I2Cexp lcd;  // declare lcd object: auto locate & auto config expander chip

// hd44780_I2Cexp lcd1(0x20);
 hd44780_I2Cexp lcd2(0x27);


// LCD geometry
const int LCD_COLS = 40;
const int LCD_ROWS = 2;

void setup() {
  int status;

  status = lcd2.begin(LCD_COLS, LCD_ROWS);
  if (status)  // non zero status means it was unsuccesful
  {
        hd44780::fatalError(status);  // does not return
  }


  lcd2.print("Hello Word");
 }
void loop() {}
3

Very Interesting!

Are you using the Arduino PLC IDE or the the Arduino IDE?

I can't find anything on using the Arduino PLC IDE to use the I2C connection.

Thanks,

Alek