OTA Solution - Build your own OTA platform (2/2, ESP32 OTA Application)

ESP32_OTA/Simple_OTA_Solution/Simple_OTA_Application/FileIO.h

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+#ifndef FileIO_H_
+#define FileIO_H_
+
+#include "SPIFFS.h"
+#include "mbedtls/md.h"
+class FileIO {
+private:
+  mbedtls_md_context_t ctx;
+
+public:
+  static constexpr const char* TEMP_BIN_FILE = "/download_firmware.bin";
+  FileIO();
+  void format();
+  void listSPIFFS();
+  fs::File openFile(String fileName, bool isReadOnly);
+  void closeFile(fs::File file);
+  void removeFile(String fileName);
+  int getFileSize(String fileName);
+  void mdContextInit();
+  void mdContextUpdate(const unsigned char* buff, int c);
+  String md5Result();
+};
+#endif