waveshare_sd_card.h

#ifndef __SD_CARD_H
#define __SD_CARD_H
#include "FS.h"
#include "SD.h"
#include "SPI.h"
#include <esp_io_expander.hpp>

// Extension IO pin definition
#define TP_RST 1      // Touch screen reset pin
#define LCD_BL 2      // LCD backlight pinout
#define LCD_RST 3     // LCD reset pin
#define SD_CS 4       // SD card select pin
#define USB_SEL 5     // USB select pin

// I2C pin definitions
#define EXAMPLE_I2C_ADDR    (ESP_IO_EXPANDER_I2C_CH422G_ADDRESS)
#define EXAMPLE_I2C_SDA_PIN 8         // I2C data line pins
#define EXAMPLE_I2C_SCL_PIN 9         // I2C clock line pin

#define SD_MOSI 11    // SD card master output slave input pin
#define SD_CLK  12    // SD card clock pin
#define SD_MISO 13    // SD card master input slave output pin
#define SD_SS -1      // SD card select pin (not used)

void listDir(fs::FS &fs, const char * dirname, uint8_t levels);
void createDir(fs::FS &fs, const char * path);
void removeDir(fs::FS &fs, const char * path);
void writeFile(fs::FS &fs, const char * path, const char * message);
void appendFile(fs::FS &fs, const char * path, const char * message);
void readFile(fs::FS &fs, const char * path);
void deleteFile(fs::FS &fs, const char * path);
void renameFile(fs::FS &fs, const char * path1, const char * path2);
void testFileIO(fs::FS &fs, const char * path);

#endif