M5StickC_SPIFFS WRITE_READ_TEST_APPEND

ESP32_git_SPIFFS_TEST_WRITE-READ_milli_append_02.ino

#include <M5StickC.h>
#include "FS.h"
#include "SPIFFS.h"

/* You only need to format SPIFFS the first time you run a
   test or else use the SPIFFS plugin to create a partition
   https://github.com/me-no-dev/arduino-esp32fs-plugin */
#define FORMAT_SPIFFS_IF_FAILED true
int i,j,k;
String Listname[1000] ;
void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
    Serial.printf("Listing directory: %s\r\n", dirname);

    File root = fs.open(dirname);
    if(!root){
        Serial.println("- failed to open directory");
        return;
    }
    if(!root.isDirectory()){
        Serial.println(" - not a directory=>Fomatting");
        bool formatted = SPIFFS.format();

        return;
    }

    File file = root.openNextFile();
    int n=0;
    while(file){
        if(file.isDirectory()){
            Serial.print("  DIR : ");
            Serial.println(file.name());
            if(levels){
                listDir(fs, file.name(), levels -1);
            }
        } else {
            n++;
            Listname[n]=file.name();
            Serial.print("FILE No ");
            Serial.print(n);
            Serial.print("=");
            Serial.print(Listname[n]);
            Serial.print("\tSIZE: ");
            Serial.println(file.size());
        }
        file = root.openNextFile();
    }
}

void readFile(fs::FS &fs, const char * path){
    Serial.printf("Reading file: %s\r\n", path);

    File file = fs.open(path);
    if(!file || file.isDirectory()){
        Serial.println("- failed to open file for reading");
        return;
    }

    Serial.println("- read from file:");
    while(file.available()){
        Serial.write(file.read());
    }
    file.close();
}

void writeFile(fs::FS &fs, const char * path, const char * message){
    Serial.printf("Writing file: %s\r\n", path);

    File file = fs.open(path, FILE_WRITE);
    if(!file){
        Serial.println("- failed to open file for writing");
        return;
    }
    if(file.print(message)){
        Serial.println("- file written");
    } else {
        Serial.println("- write failed");
    }
    file.close();
}

void appendFile(fs::FS &fs, const char * path, const char * message){
    //Serial.printf("Appending to file: %s\r\n", path);

    File file = fs.open(path, FILE_APPEND);
    if(!file){
        Serial.println("- failed to open file for appending");
        return;
    }
    if(file.print(message)){
        //Serial.println("- message appended");
    } else {
        Serial.println("- append failed");
    }
    file.close();
}

void renameFile(fs::FS &fs, const char * path1, const char * path2){
    Serial.printf("Renaming file %s to %s\r\n", path1, path2);
    if (fs.rename(path1, path2)) {
        Serial.println("- file renamed");
    } else {
        Serial.println("- rename failed");
    }
}

void deleteFile(fs::FS &fs, const char * path){
    Serial.printf("Deleting file: %s\r\n", path);
    if(fs.remove(path)){
        Serial.println("- file deleted");
    } else {
        Serial.println("- delete failed");
    }
}

void testFileIO(fs::FS &fs, const char * path){
    Serial.printf("Testing file I/O with %s\r\n", path);

    static uint8_t buf[512];
    size_t len = 0;
    File file = fs.open(path, FILE_WRITE);
    if(!file){
        Serial.println("- failed to open file for writing");
        return;
    }

    size_t i;
    Serial.print("- writing" );
    uint32_t start = millis();
    for(i=0; i<2048; i++){
        if ((i & 0x001F) == 0x001F){
          Serial.print(".");
        }
        file.write(buf, 512);
    }
    Serial.println("");
    uint32_t end = millis() - start;
    Serial.printf(" - %u bytes written in %u ms\r\n", 2048 * 512, end);
    file.close();

    file = fs.open(path);
    start = millis();
    end = start;
    i = 0;
    if(file && !file.isDirectory()){
        len = file.size();
        size_t flen = len;
        start = millis();
        Serial.print("- reading" );
        while(len){
            size_t toRead = len;
            if(toRead > 512){
                toRead = 512;
            }
            file.read(buf, toRead);
            if ((i++ & 0x001F) == 0x001F){
              Serial.print(".");
            }
            len -= toRead;
        }
        Serial.println("");
        end = millis() - start;
        Serial.printf("- %u bytes read in %u ms\r\n", flen, end);
        file.close();
    } else {
        Serial.println("- failed to open file for reading");
    }
    
}
void str2char(char c[],String dataS)
{
  //String dataS;
   //dataS="HELLO dataS";
    int dataS_len=dataS.length()+1;
    char char_array[dataS_len];
    dataS.toCharArray(c,dataS_len);
    
}

void setup(){
    M5.begin();
    Serial.begin(115200);
    Serial.println("SPIFFS TEST ");
    if(!SPIFFS.begin(FORMAT_SPIFFS_IF_FAILED)){
        Serial.println("SPIFFS Mount Failed");
        return;
    }
    Serial.println("===============SPIFFS SET UP=============");
    int j=0;
     String dataStr;
     char char_array[]={};
    for (j=0;j<10;j++)
    {
        dataStr=String(millis())+",";
        str2char(char_array,dataStr);
        appendFile(SPIFFS, "/hello.txt",char_array);
         //appendFile(SPIFFS, "/hello.txt",String(millis())+"\r\n");
    }
    //writeFile(SPIFFS, "/hello.txt", "Hello:12345 ");
    //appendFile(SPIFFS, "/hello.txt", "World:67890!\r\n");
   

     /*
   // writeFile(SPIFFS, "/hello_1.txt", "Hello_1:12345 ");
   // writeFile(SPIFFS, "/hello_2.txt", "Hello_1:12345 ");
   // writeFile(SPIFFS, "/hello_3.txt", "Hello_1:12345 ");
    // listDir(SPIFFS, "/", 0);
   
    appendFile(SPIFFS, "/hello.txt", "World67890!\r\n");
    readFile(SPIFFS, "/hello.txt");
    renameFile(SPIFFS, "/hello.txt", "/foo.txt");
    readFile(SPIFFS, "/foo.txt");
    deleteFile(SPIFFS, "/foo.txt");
    testFileIO(SPIFFS, "/test.txt");
    deleteFile(SPIFFS, "/test.txt");
    */
    //Serial.println( "Test complete" );
}

void loop(){
  //Serial.println("LOOP");
  if(M5.BtnB.wasPressed()){
    esp_restart();
  }
  M5.update();
   if( Serial.available()){
    
    char key =Serial.read(); 
        //DeleteFile-----------------------------------------------------
        if(key=='D')//D Key Pushed
        {
          int dk; //File No 0-9999 
          int dflag=0;
         listDir(SPIFFS, "/", 0);
          Serial.print("Input Delete File No=");
            String  dsN="";//d selectNo
            char dC;//Input key char
            char dN[4]={};//4keta No 0-9999 Char Array
            dk=0;
          while(dC!= '\r'){
                if(Serial.available())
                  {
                    dC=Serial.read();
                    Serial.print(dC);
                    dN[dk]=dC;
                    dk++;
                  }
        }
         dsN=String(dN);//FileNo CharArray to String dsN
         Serial.print(dsN);//FileNo Diplay
          int deN=dsN.toInt();//FileNo String dsN to Integer
          Serial.printf("deN=%d\n\r",deN);
         String dstr=Listname[deN];//FileName [FileNo deN] to dstr 
         
         int dslen=dstr.length()+1;//Filename Length
         char buf[dslen];//Filename CharArry buf 
         dstr.toCharArray(buf,dslen);//buf charArry Filename
        Serial.printf("DeleteFilename=%s=%S,dslen=%d\n\r",dstr,Listname[deN],dslen);
         deleteFile(SPIFFS, buf);

          
        }
   
        //List File------------------------------------------------------
        if (key=='L'){
          listDir(SPIFFS, "/", 0);
        }
        //Append FIle---------------------------------------------------
        if(key=='A'){
           int j=0;
          String dataStr;
          char char_array[]={};
          for (j=0;j<10;j++)
          {
              dataStr=String(millis())+",";
              str2char(char_array,dataStr);
              appendFile(SPIFFS, "/hello.txt",char_array);
              Serial.printf("Appending %j\n\r",j);
            //appendFile(SPIFFS, "/hello.txt",String(millis())+"\r\n");
         }
        
      }
      //Read File------------------------------------------------------
      if(key=='R'){
         int rflag=0;
         listDir(SPIFFS, "/", 0);
        Serial.print("Input Read File No=");
        String  sN="";
        char bC;
        char cN[4];
        k=0;
        while(bC!= '\r'){
         if(Serial.available())
                  {
                    bC=Serial.read();
                    Serial.print(bC);
                    cN[k]=bC;
                    k++;
                  }
        }
         sN=String(cN);
         Serial.print(sN);
          int aN=sN.toInt();
         String str=Listname[aN];
         int slen=str.length()+1;
         char buf[slen];
         str.toCharArray(buf,slen);
         Serial.printf("ReadFilename=%s,slen=%d\n\r",str,slen);
        readFile(SPIFFS, buf);
       //readFile(SPIFFS, "/hello.txt");
      }
      //Write FileName messages-------------------------------------
      if(key=='W'){
            //key in FileName-----------------------------
              Serial.print("Please Input File Name[last'.']=");
              char fname[30];
              fname[0]='/';
              char inputC;
           
              while(  inputC!= '.'){
                  if(Serial.available())
                  {
                    j++;
                    inputC=Serial.read();
                    fname[j%30] =inputC;
                    Serial.print(fname[j%30]);
                  }
                }//while end 
                fname[j+1]='t';
                fname[j+2]='x';
                fname[j+3]='t';
              //key in Message---------------------------------
                  char mes[100];
                  Serial.print("Please Input message=");
                 
                  j=0;
                  while(  inputC!= '\r'){
                      if(Serial.available())
                      {
                        
                          inputC=Serial.read();
                           mes[j%100] =inputC;
                          Serial.print(mes[j%100]);
                           j++;
                      }
                    }//while end 
                    writeFile(SPIFFS, fname, mes);
          }//key 'W' end
   Serial.println();
   Serial.println("===Please key IN====");
   Serial.println("W:writeFile,R:ReadFile,L:List,ButnB_restart");//Append Not working
  }
}