SSD1322 problem

Other Hardware Displays
1

Hi,
I am having a problem with arduino Nano and OLED display with SSD1322 driver. After wiring up the
display, it shows "Hello World" all the time, no matter what I type in code.
My code:

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

//U8G2_SSD1322_NHD_256X64_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
U8G2_SSD1322_NHD_256X64_1_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	
void setup() 
{
  u8g2.begin();
  u8g2.firstPage();
  do
  {
    u8g2.setFont(u8g2_font_ncenB14_tr);
    u8g2.drawStr(0,20,"AAAAAAA");
    u8g2.clear();
  }while(u8g2.nextPage());
}

void loop() 
{
  // put your main code here, to run repeatedly:
 }
2

If you type AAAAAA... it shows "Hello World" all the time????

3

Yes, originally I wrote hello world but later when I changed it for something else it was still showing hello world. My guess is “hello world” is saved in display’s memory, but I don’t know if I wrote it inside it or the display came to me with phrase already in memory.

4

Check your connections and if possible change the cables.

5

I've found the problem. My nano is not updating program thats running on it when i upload it. Thats why it shows the same text all the time, but i dont know how to fix it.

6

I've changed from nano to uno and now its not showing anything.

7

Please post any warnings & errors in the bottom half of the Arduino screen you receive when the code upload fails.

8

Code works on UNO, display works properly. I guess my nano fried or something.

9

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