OLED stops updating (u8glib) - SOLVED

Using Arduino Displays
1

Hi. I'm using uglib for a SSD1306 128x64 OLED in my current project. Its connected to a Arduino UNO, SDA and SCL.

I noticed that the OLED suddenly stops updating the display, but the micro still runs the code. Its a bit random when it stops updating, but always before a minute or so of execution.

For debugging, I write to serial in the draw() function, and when OLED updates correctly I see from serial that draw() is run 8 times per updated. However, when the display has frozen, the draw() only run one time per update.

Test code used:

#include "U8glib.h"
U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE|U8G_I2C_OPT_DEV_0); // I2C / TWI 

int teller=0;

void draw(void) {
  u8g.setFont(u8g_font_unifont);
  u8g.setPrintPos(0,55);
  u8g.print(teller);
  Serial.print(teller);
  
}

void setup(void) {
  Serial.begin(9600);

  // 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(void) {
  // picture loop
  u8g.firstPage();  
  do {
    draw();
  } while( u8g.nextPage() );
  
  // rebuild the picture after some delay
  delay(1000);
  teller++;
  Serial.println("");
}

Example of serial output(OLED froze on 7):
11111111
22222222
33333333
44444444
55555555
66666666
77777777
8
9
10
11
12
13
14
15

Somebody experienced same thing? Could it be a issue internally in my OLED?

2

Just updated to u8g2lib, and the OLED now updates as expected.

Thanks to Oliver Kraus for sharing this library!