WiFiManager: Problem to Save on FS

Basic Infos

Hardware

WiFimanager Branch/Release:

• Master
• Development

Esp8266/Esp32:

• [x ] ESP8266
• ESP32

Hardware: ESP-12F,

• ESP01
• [x ] ESP12 E/F/S (nodemcu, wemos, feather)
• Other

ESP Core Version: 2.4.0, staging

• 2.3.0
• 2.4.0
• staging (master/dev)

Description

Cannot save anything on ESP12F. It seems that it fails to mount FS.

mounting FS...
failed to mount FS

Settings in IDE

Module: NodeMcu

Additional libraries:

Sketch is the AutoConnectWithFSParametersAndCustomIP where I`ve changed the IP and gateway.

#include <FS.h>                   //this needs to be first, or it all crashes and burns...

#include <ESP8266WiFi.h>          //https://github.com/esp8266/Arduino

//needed for library
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>          //https://github.com/tzapu/WiFiManager

#include <ArduinoJson.h>          //https://github.com/bblanchon/ArduinoJson

//define your default values here, if there are different values in config.json, they are overwritten.
char mqtt_server[40];
char mqtt_port[6] = "1883";
char blynk_token[34] = "YOUR_BLYNK_TOKEN";

//flag for saving data
bool shouldSaveConfig = false;

//callback notifying us of the need to save config
void saveConfigCallback () {
  Serial.println("Should save config");
  shouldSaveConfig = true;
}


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println();

  //clean FS, for testing
  //SPIFFS.format();

  //read configuration from FS json
  Serial.println("mounting FS...");

  if (SPIFFS.begin()) {
    Serial.println("mounted file system");
    if (SPIFFS.exists("/config.json")) {
      //file exists, reading and loading
      Serial.println("reading config file");
      File configFile = SPIFFS.open("/config.json", "r");
      if (configFile) {
        Serial.println("opened config file");
        size_t size = configFile.size();
        // Allocate a buffer to store contents of the file.
        std::unique_ptr<char[]> buf(new char[size]);

        configFile.readBytes(buf.get(), size);
        DynamicJsonBuffer jsonBuffer;
        JsonObject& json = jsonBuffer.parseObject(buf.get());
        json.printTo(Serial);
        if (json.success()) {
          Serial.println("\nparsed json");

          strcpy(mqtt_server, json["mqtt_server"]);
          strcpy(mqtt_port, json["mqtt_port"]);
          strcpy(blynk_token, json["blynk_token"]);

        } else {
          Serial.println("failed to load json config");
        }
        configFile.close();
      }
    }
  } else {
    Serial.println("failed to mount FS");
  }
  //end read



  // The extra parameters to be configured (can be either global or just in the setup)
  // After connecting, parameter.getValue() will get you the configured value
  // id/name placeholder/prompt default length
  WiFiManagerParameter custom_mqtt_server("server", "mqtt server", mqtt_server, 40);
  WiFiManagerParameter custom_mqtt_port("port", "mqtt port", mqtt_port, 6);
  WiFiManagerParameter custom_blynk_token("blynk", "blynk token", blynk_token, 32);

  //WiFiManager
  //Local intialization. Once its business is done, there is no need to keep it around
  WiFiManager wifiManager;

  //set config save notify callback
  wifiManager.setSaveConfigCallback(saveConfigCallback);

  //set static ip
  wifiManager.setSTAStaticIPConfig(IPAddress(192,168,8,88), IPAddress(192,168,8,1), IPAddress(255,255,255,0));
  
  //add all your parameters here
  wifiManager.addParameter(&custom_mqtt_server);
  wifiManager.addParameter(&custom_mqtt_port);
  wifiManager.addParameter(&custom_blynk_token);

  //reset settings - for testing
  //wifiManager.resetSettings();

  //set minimu quality of signal so it ignores AP's under that quality
  //defaults to 8%
  //wifiManager.setMinimumSignalQuality();
  
  //sets timeout until configuration portal gets turned off
  //useful to make it all retry or go to sleep
  //in seconds
  //wifiManager.setTimeout(120);

  //fetches ssid and pass and tries to connect
  //if it does not connect it starts an access point with the specified name
  //here  "AutoConnectAP"
  //and goes into a blocking loop awaiting configuration
  if (!wifiManager.autoConnect("AutoConnectAP", "password")) {
    Serial.println("failed to connect and hit timeout");
    delay(3000);
    //reset and try again, or maybe put it to deep sleep
    ESP.reset();
    delay(5000);
  }

  //if you get here you have connected to the WiFi
  Serial.println("connected...yeey :)");

  //read updated parameters
  strcpy(mqtt_server, custom_mqtt_server.getValue());
  strcpy(mqtt_port, custom_mqtt_port.getValue());
  strcpy(blynk_token, custom_blynk_token.getValue());

  //save the custom parameters to FS
  if (shouldSaveConfig) {
    Serial.println("saving config");
    DynamicJsonBuffer jsonBuffer;
    JsonObject& json = jsonBuffer.createObject();
    json["mqtt_server"] = mqtt_server;
    json["mqtt_port"] = mqtt_port;
    json["blynk_token"] = blynk_token;

    File configFile = SPIFFS.open("/config.json", "w");
    if (!configFile) {
      Serial.println("failed to open config file for writing");
    }

    json.printTo(Serial);
    json.printTo(configFile);
    configFile.close();
    //end save
  }

  Serial.println("local ip");
  Serial.println(WiFi.localIP());

}

void loop() {
  // put your main code here, to run repeatedly:


}

Debug Messages

mounting FS… failed to mount FS *WM: [3] allocating params bytes: 20 *WM: [2] Added Parameter: server *WM: [2] Added Parameter: port *WM: [2] Added Parameter: blynk *WM: [1] AutoConnect *WM: [2] Connecting as wifi client… *WM: [1] STA static IP: 192.168.8.88 *WM: [2] Custom static IP/GW/Subnet/DNS *WM: [2] Custom STA IP/GW/Subnet *WM: [1] STA IP set: 192.168.8.88 *WM: [3] WIFI station disconnect *WM: [1] No saved credentials, skipping wifi *WM: [2] Connection result: WL_NO_SSID_AVAIL *WM: [3] lastconxresult: WL_NO_SSID_AVAIL *WM: [1] AutoConnect: FAILED *WM: [2] AccessPoint set password is VALID *WM: [1] password *WM: [3] WIFI station disconnect *WM: [3] WiFi station enable *WM: [2] Disabling STA *WM: [2] Enabling AP *WM: [1] StartAP with SSID: AutoConnectAP *WM: [1] AP IP address: 192.168.4.1 *WM: [3] setupConfigPortal *WM: [1] Starting Web Portal *WM: [3] dns server started with ip: 192.168.4.1 *WM: [2] HTTP server started *WM: [2] WiFi Scan ASYNC started *WM: [2] Config Portal Running, blocking, waiting for clients… *WM: [2] NUM CLIENTS: 0 *WM: [2] WiFi Scan ASYNC completed in 2203 ms *WM: [2] WiFi Scan ASYNC found: 2 *WM: [2] <- HTTP Root *WM: [3] -> 192.168.4.1 *WM: [3] lastconxresult: WL_CONNECTED *WM: [2] Scan is cached 17023 ms ago *WM: [3] -> connectivitycheck.gstatic.com *WM: [2] <- Request redirected to captive portal *WM: [3] -> clients3.google.com *WM: [2] <- Request redirected to captive portal *WM: [3] -> portal.fb.com *WM: [2] <- Request redirected to captive portal *WM: [2] <- HTTP Root *WM: [3] -> 192.168.4.1 *WM: [3] lastconxresult: WL_CONNECTED *WM: [2] Scan is cached 19344 ms ago *WM: [3] -> connect.rom.miui.com *WM: [2] <- Request redirected to captive portal *WM: [2] <- HTTP Root *WM: [3] -> 192.168.4.1 *WM: [3] lastconxresult: WL_CONNECTED *WM: [2] WiFi Scan ASYNC started *WM: [3] -> 192.168.4.1 *WM: [2] WiFi Scan ASYNC completed in 2205 ms *WM: [2] WiFi Scan ASYNC found: 4 *WM: [2] <- HTTP Wifi *WM: [2] Scan is cached 1036 ms ago *WM: [1] 4 networks found *WM: [2] DUP AP: OTWLAN *WM: [2] AP: -66 OTWLAN *WM: [2] AP: -66 OTpublic *WM: [2] AP: -95 NET_2G034B04 *WM: [3] _staShowStaticFields *WM: [3] lastconxresult: WL_CONNECTED *WM: [3] Sent config page *WM: [3] -> connect.rom.miui.com *WM: [2] <- Request redirected to captive portal *WM: [3] -> connect.rom.miui.com *WM: [2] <- Request redirected to captive portal *WM: [3] -> connect.rom.miui.com *WM: [2] <- Request redirected to captive portal *WM: [2] NUM CLIENTS: 1 *WM: [3] -> connect.rom.miui.com *WM: [2] <- Request redirected to captive portal *WM: [2] <- HTTP WiFi save
*WM: [3] Method: POST *WM: [2] Parameters *WM: [2] -------------------- *WM: [2] server: Teste.xxx.com *WM: [2] port: 1883 *WM: [2] blynk: YOUR_BLYNK_TOKEN *WM: [2] -------------------- *WM: [3] static ip: 192.168.8.88 *WM: [3] static gateway: 192.168.8.1 *WM: [3] static netmask: 255.255.255.0 *WM: [3] Sent wifi save page *WM: [2] process connect *WM: [2] Connecting as wifi client… *WM: [1] STA static IP: 192.168.8.88 *WM: [2] Custom static IP/GW/Subnet/DNS *WM: [2] Custom STA IP/GW/Subnet *WM: [1] STA IP set: 192.168.8.88 *WM: [3] WIFI station disconnect *WM: [1] Connecting to new AP: $ecreta *WM: [3] Using Password: $3nh4$3gur4 *WM: [3] WiFi station enable *WM: [3] enableSTA PERSISTENT ON *WM: [1] connectTimeout not set, ESP waitForConnectResult… *WM: [2] Connection result: WL_CONNECTED *WM: [3] lastconxresult: WL_CONNECTED *WM: [1] Connect to new AP [SUCCESS] *WM: [1] Got IP Address: *WM: [1] 192.168.8.88 Should save config *WM: [2] disconnect configportal *WM: [2] restoring usermode STA *WM: [2] wifi status: WL_CONNECTED *WM: [2] wifi mode: STA *WM: [1] config portal exiting connected…yeey 😃 saving config failed to open config file for writing {“mqtt_server”:“Teste.xxx.com”,“mqtt_port”:“1883”,“blynk_token”:“YOUR_BLYNK_TOKEN”}local ip 192.168.8.88 *WM: [3] freeing allocated params! *WM: [3] unloading