Is it possible to create a files in SPIFFS without sketch upload?

woundr · March 18, 2019, 4:58pm

I have a esp8266, i try to upload a files in spiffs with/without sketch upload option available in arduino. using sketch upload option it work..a new file is created in spiffs.but when i try to create a new files using code (filename.open("/testme.txt","w")) its does not create any file in spiffs. how can over come this problem??

gfvalvo · March 18, 2019, 5:05pm

Your post is titled "Is it possible to create a files in SPIFFS without sketch upload?", but the text says you want to create the SPIFFS file using code. Which is it you want?

Juraj · March 18, 2019, 5:48pm

yes it is possible.
here is the example

github.com

esp8266/Arduino/blob/master/libraries/esp8266/examples/ConfigFile/ConfigFile.ino

// Example: storing JSON configuration file in flash file system
//
// Uses ArduinoJson library by Benoit Blanchon.
// https://github.com/bblanchon/ArduinoJson
//
// Created Aug 10, 2015 by Ivan Grokhotkov.
//
// This example code is in the public domain.

#include <ArduinoJson.h>
#include "FS.h"
#include <LittleFS.h>

// more and possibly updated information can be found at:
// https://arduinojson.org/v6/example/config/

bool loadConfig() {
  File configFile = LittleFS.open("/config.json", "r");
  if (!configFile) {
    Serial.println("Failed to open config file");

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Is it possible to create a files in SPIFFS without sketch upload?

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