* Permanentes Schreiben von Daten auf SDCard (/YY/MM/DD/HHMMSS.txt)
* Esp32SDCardDemo zeigt folgende in der Klasse CSDCard gekapselten File- und Directory-Funktionen:
// #ifndef SDCard_h #define SDCard_h // //---------------------- // Include //---------------------- #include "Define.h" // #include <Arduino.h> #include "FS.h" #include "SD.h" #include "SPI.h" // enum ECardType { ctNone = 0, ctMMC = 1, ctSD = 2, ctSDHC = 3, ctUnknown = 4 }; // const char* CardTypeText(ECardType cardtype); // class CSDCard { private: int FPinSS; File FFile; TMessage FPMessage; TError FPError; // public: // Instance CSDCard(int pinss, TMessage pmessage, TError perror); bool Initialise(void); // Property bool IsEndOfFile(void); ECardType GetCardType(void); uint64_t GetCardSizeMB(void); // WriteFile bool OpenWrite(const char* fileentry); bool OpenAppend(const char* fileentry); bool WriteCharacter(const char character); bool WriteText(const char* text); bool WriteLine(const char* line); bool CloseWrite(void); // ReadFile bool OpenRead(const char* fileentry); bool ReadCharacter(char &character); bool ReadText(char* text, unsigned &size); bool ReadLine(char* line); bool CloseRead(void); // File bool RenameFile(const char* entrysource, const char* entrytarget); bool RemoveFile(const char * entry); // Directory bool ListDirectory(const char* entry); bool CreateDirectory(const char* entry); bool RemoveDirectory(const char* entry); }; // #endif // SDCard_h
const char* DIRECTORY_MAIN = "/"; const char* DIRECTORY_SUBYY = "/22"; const char* DIRECTORY_SUBMM = "/22/11"; const char* DIRECTORY_SUBDD = "/22/11/04";
_Message(LINE_SEPARATOR); sprintf(Line, "Create Directory[%s]:", DIRECTORY_SUBYY); _Message(Line); SDCard.CreateDirectory(DIRECTORY_SUBYY); // _Message(LINE_SEPARATOR); sprintf(Line, "Create Directory[%s]:", DIRECTORY_SUBMM); _Message(Line); SDCard.CreateDirectory(DIRECTORY_SUBMM); // _Message(LINE_SEPARATOR); sprintf(Line, "Create Directory[%s]:", DIRECTORY_SUBDD); _Message(Line); SDCard.CreateDirectory(DIRECTORY_SUBDD);
_Message(LINE_SEPARATOR); sprintf(Line, "List Directory[%s]:", DIRECTORY_MAIN); _Message(Line); SDCard.ListDirectory(DIRECTORY_MAIN); // _Message(LINE_SEPARATOR); sprintf(Line, "List Directory[%s]:", DIRECTORY_SUBYY); _Message(Line); SDCard.ListDirectory(DIRECTORY_SUBYY); // _Message(LINE_SEPARATOR); sprintf(Line, "List Directory[%s]:", DIRECTORY_SUBMM); _Message(Line); SDCard.ListDirectory(DIRECTORY_SUBMM); // _Message(LINE_SEPARATOR); sprintf(Line, "List Directory[%s]:", DIRECTORY_SUBDD); _Message(Line); SDCard.ListDirectory(DIRECTORY_SUBDD);