ESP8266 Community Forum

Posted: **Thu Oct 25, 2018 10:29 am**

Hello
I am trying to use the nodeMCU to log data to the SPIFFS with a SD card backup from a sensor once a minute and use a FTP server to transfer the file to my pc. The example I found to setup the server works fine and I can transfer files to and from the server. When I use the Node as just a microcontroller unit it logs to the SD card fine. After adding the write to SPIFFS and FTP server code it is not logging to the SPIFFS (as far as I can tell) and I get an error from Filezilla of
Status: Connecting to 192.168.0.100:21...
Status: Connection established, waiting for welcome message...
Error: Connection timed out after 20 seconds of inactivity
Error: Could not connect to server

The code compiles without a problem
I am still fairly new to coding so maybe it is something I missed.

Code: Select all

#define FS_NO_GLOBALS
#include <SD.h>
#include <Wire.h>
#include "Adafruit_HTU21DF.h"
#include "FS.h"

#ifdef ESP8266
#include <ESP8266WiFi.h>
  #elif defined ESP32
#include <WiFi.h>

#include "SPIFFS.h"
#endif

#include <ESP8266FtpServer.h>

const char* ssid = "******";
const char* password = "******";

FtpServer ftpSrv;   //set #define FTP_DEBUG in ESP8266FtpServer.h to see ftp verbose on serial

// Connect Vin to 3-5VDC
// Connect GND to ground
// Connect SCL to I2C clock pin (A5 on UNO)
// Connect SDA to I2C data pin (A4 on UNO)
File myFile;

Adafruit_HTU21DF htu = Adafruit_HTU21DF();

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  
  Serial.println("HTU21D-F");

  if (!htu.begin()) {
    Serial.println("Couldn't find sensor!");
    while (1);
  }
   Serial.print("Initializing SD card...");
  // On the Ethernet Shield, CS is pin 4. It's set as an output by default.
  // Note that even if it's not used as the CS pin, the hardware SS pin 
  // (10 on most Arduino boards, 53 on the Mega) must be left as an output 
  // or the SD library functions will not work. 
   pinMode(10, OUTPUT);
 
  if (!SD.begin(2)) {
    Serial.println("initialization failed!");
    return;
  }
  Serial.println("initialization done.");
  
 
  /////FTP Setup, ensure SPIFFS is started before ftp;  /////////
  
  /////FTP Setup, ensure SPIFFS is started before ftp;  /////////
  
#ifdef ESP32       //esp32 we send true to format spiffs if cannot mount
  if (SPIFFS.begin(true)) {
#elif defined ESP8266
  if (SPIFFS.begin()) {
#endif
 
  
     Serial.println("SPIFFS opened!");
      ftpSrv.begin("esp8266","esp8266");    //username, password for ftp.  set ports in ESP8266FtpServer.h  (default 21, 50009 for PASV)
  }    
  }

void loop() {
  myFile = SD.open("Temp_Hum.txt", FILE_WRITE);
  
  Serial.print("Temp: "); Serial.print(htu.readTemperature());
  Serial.print("\t\tHum: "); Serial.println(htu.readHumidity());
  myFile.print("Temp: "); myFile.print(htu.readTemperature());
  myFile.print("\t\tHum: "); myFile.println(htu.readHumidity());
  myFile.close();
  
  fs::File f = SPIFFS.open("Temp_Hum.txt", "w");
  f.print("Temp: "); f.print(htu.readTemperature());
  f.print("\t\tHum: "); f.println(htu.readHumidity());
  f.close();
  delay(60000);
  ftpSrv.handleFTP();        //make sure in loop you call handleFTP()!!  
 
}

Arduino IDE 1.8.5
NodeMCU 1.0 ESP-12E
Adafruit HTU21D-F Temperature and Humidity Sensor
Adafruit MicroSD Breakout Board

Any help would be appreciated

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