LCD LCD-15890 - Hello World only printing top half of the text

Components & Accessories Displays
1

I have the following code

#include <Arduino.h>
#include <U8g2lib.h>

#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif


U8G2_SSD1327_EA_W128128_1_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);


// End of constructor list


void setup(void) {
  u8g2.begin();
}

void loop(void) {
  u8g2.clearBuffer();					// clear the internal memory
  u8g2.setFont(u8g2_font_ncenB08_tr);	// choose a suitable font
  u8g2.drawStr(0,10,"Hello World!");	// write something to the internal memory
  u8g2.sendBuffer();					// transfer internal memory to the display
  delay(1000);  
}

When running, it displays only the top half of the string, and not the bottom.

I tried different fonts, and they all seem to do the same thing.

Any ideas?

Thanks

2

Hi, have you cross-checked your method with this guideline?

https://www.smart-prototyping.com/blog/ … tart-Guide

3

Yes, that is what I used to implement it.

Just for reference, page mode works, but have to make 3 passes with page next, before the display is fully rendered.

U8x8 model works as well (much faster).

Just the full buffer mode is causing issues.