#include <SD.h>
#include <SPI.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

const int chipSelect = 5; // Pin connected to the CS (Chip Select) of the SD card module
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(115200);
  pinMode(chipSelect, OUTPUT);

  if (!SD.begin(chipSelect)) {
    Serial.println("SD card initialization failed!");
    return;
  }

  Serial.println("SD card initialized successfully");


  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(2000);
  /*display.clearDisplay();

  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0, 10);
  // Display static text
  display.println("Dont Hesitate!");
  display.display(); */
  writeFile("SDfile.txt","this is my first file");

}
  //readfile("SD_file");
void loop() {
  // Your SD card operations go here
  
}

void writeFile(const char *filename, const char *data)
{
  File file=SD.open(filename,FILE_WRITE);
  
  //Serial.println(data);
  if(file)
  {
    file.println(data);
    Serial.println("data is written successfully");
    file.close();

  }
  else{
    Serial.print("sorry the data is not written");
  }
}