OLED DISPLAY USING SPI

Question

My display is not responding to this code. Help please

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_MOSI 10
#define OLED_CLK 9
#define OLED_DC 12
#define OLED_CS 13
#define OLED_RESET 11
Adafruit_SSD1306 display(OLED_MOSI,OLED_CLK,OLED_DC,OLED_CS,OLED_RESET);


void setup(){
  Serial.begin(9600);
  display.begin(SSD1306_SWITCHCAPVCC);
  display.clearDisplay();

  display.setTextSize(1);
  display.setCursor(30,30);
  display.print("Hello WOrld");
  display.display();
  }

  void loop(){

    }

There is no code, that would respond to user actions. It just displays hello world, nothing else. — chrisl
– chrisl, Commented Jun 12, 2019 at 10:02
sorry what i meant was that the display is not turning on. I ran the adafruit example and the display qorks fine. So is there a problem in the code? i copied this code from a youtube video — sudhanv apte
– sudhanv apte, Commented Jun 13, 2019 at 4:03

Dmitry Grigoryev · Accepted Answer · 2019-06-13 08:12:16Z

1

Pin definitions in your code seem to be mixed up. If Adafruit example works fine with your setup, you should keep the pin definitions Adarfruit uses:

#define OLED_MOSI   9
#define OLED_CLK   10
#define OLED_DC    11
#define OLED_CS    12
#define OLED_RESET 13

Also, you are using a deprecated constructor. It is recommended to use a constructor which explicitly specifies display size.

answered Jun 13, 2019 at 8:12

Dmitry Grigoryev

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