#include <SPI.h>
#include <SD.h>

// Define the chip select pin for the SD card
const int CS_PIN = 10;

void setup() {
  // Start the serial communication
  Serial.begin(115200);
  
  // Initialize the SD card
  Serial.print("Initializing SD card...");
  if (!SD.begin(CS_PIN)) {
    Serial.println("Initialization failed!");
    return;
  }
  Serial.println("Initialization done.");

  // Create and open a file on the SD card
  File file = SD.open("/test.txt", FILE_WRITE);
  
  // If the file opened successfully, write to it
  if (file) {
    Serial.println("Writing to file...");
    file.println("Hello, ESP32-C6!");
    file.close();
    Serial.println("File written.");
  } else {
    Serial.println("Failed to open file for writing.");
  }

  // Reopen the file in read mode
  file = SD.open("/test.txt");
  if (file) {
    Serial.println("Reading from file:");
    
    // Read the file until there's nothing else in it
    while (file.available()) {
      Serial.write(file.read());
    }
    file.close();
  } else {
    Serial.println("Failed to open file for reading.");
  }
}

void loop() {
  // Nothing to do here
}