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(){
 }

• jsotola: what does this mean? not responding
• chrisl: There is no code, that would respond to user actions. It just displays hello world, nothing else.
• sudhanv apte: 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

Answer 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.