Hi
I have some issues appending data to a file on a ftp server, server is not on my ESP bord, it is a online ftp server.
The data I want to append to file data.txt is 'load' and 'temp'
The code creates the file on server, but it dont append data to it, it stays 0 byte.
Appreciate any help!
M
Code:
/**
This file modifies SurferTim's FTP code (http://playground.arduino.cc/Code/FTP)
*/
#include <WiFi.h>
#include <FS.h>
#include "SPIFFS.h"
#define FTPWRITE
float load = 25.3; // kg from a scale
float temp = 22.1;
const char* ssid = "a";
const char* wifipass = "aaaaaaaa";
//FTP stuff
const char* host = "ftp.server.com";
const char* userName = "server@server.com";
const char* password = "FTPpass";
//File Operation
char fileName[13] = "data.txt";
//############################################
//DO NOT CHANGE THESE
char outBuf[128];
char outCount;
WiFiClient client;
WiFiClient dclient;
//###########################################
//Move into setup()
void setup() {
// Serial setup
Serial.begin(57600);
delay(100);
//Wifi Setup
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
//WiFi.begin(ssid);
WiFi.begin(ssid, wifipass);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
//SPIFF setup
SPIFFS.begin();
}
//#########################################
//Move into loop()
/*
In the current state, this loop will append
'Success!!' to the end of a filename then
upload it to your FTP server
*/
void loop() {
// Open the file on the SPIFFS file system in "append" mode
File f = SPIFFS.open(fileName, "a");
if (!f) {
Serial.println("File open failed");
} else {
f.println(load); // Append the content of the 'load' variable to the file
f.print(","); // make comma separated content to file
f.println(temp); // append temperature to file
f.close();
Serial.println("Data appended to file");
}
if (doFTP()) {
Serial.println("FTP OK");
} else {
Serial.println("FTP FAIL");
}
delay(10000);
}
//#######################################
/*
This is the function where the magic happens.
all credit goes to SurferTim. This will open
and write the file to your FTP server
*/
byte doFTP()
{
File fh = SPIFFS.open(fileName, "r");
if (!fh) {
Serial.println("file open failed");
}
if (client.connect(host, 21)) {
Serial.println(F("Command connected"));
}
else {
fh.close();
Serial.println(F("Command connection failed"));
return 0;
}
if (!eRcv()) return 0;
client.print("USER ");
client.println(userName);
if (!eRcv()) return 0;
client.print("PASS ");
client.println(password);
if (!eRcv()) return 0;
client.println("SYST");
if (!eRcv()) return 0;
client.println("Type I");
if (!eRcv()) return 0;
client.println("PASV");
if (!eRcv()) return 0;
char *tStr = strtok(outBuf, "(,");
int array_pasv[6];
for ( int i = 0; i < 6; i++) {
tStr = strtok(NULL, "(,");
array_pasv[i] = atoi(tStr);
if (tStr == NULL)
{
Serial.println(F("Bad PASV Answer"));
}
}
unsigned int hiPort, loPort;
hiPort = array_pasv[4] << 8;
loPort = array_pasv[5] & 255;
Serial.print(F("Data port: "));
hiPort = hiPort | loPort;
Serial.println(hiPort);
if (dclient.connect(host, hiPort)) {
Serial.println("Data connected");
}
else {
Serial.println("Data connection failed");
client.stop();
fh.close();
}
client.print("STOR ");
client.println(fileName);
if (!eRcv())
{
dclient.stop();
return 0;
}
Serial.println(F("Writing"));
byte clientBuf[64];
int clientCount = 0;
while (fh.available())
{
clientBuf[clientCount] = fh.read();
clientCount++;
if (clientCount > 63)
{
dclient.write((const uint8_t *)clientBuf, 64);
clientCount = 0;
}
}
if (clientCount > 0) dclient.write((const uint8_t *)clientBuf, clientCount);
dclient.stop();
Serial.println(F("Data disconnected"));
client.println();
if (!eRcv()) return 0;
client.println("QUIT");
if (!eRcv()) return 0;
client.stop();
Serial.println(F("Command disconnected"));
fh.close();
Serial.println(F("File closed"));
return 1;
}
byte eRcv()
{
byte respCode;
byte thisByte;
while (!client.available()) delay(1);
respCode = client.peek();
outCount = 0;
while (client.available())
{
thisByte = client.read();
Serial.write(thisByte);
if (outCount < 127)
{
outBuf[outCount] = thisByte;
outCount++;
outBuf[outCount] = 0;
}
}
if (respCode >= '4')
{
efail();
return 0;
}
return 1;
}
void efail()
{
byte thisByte = 0;
client.println(F("QUIT"));
while (!client.available()) delay(1);
while (client.available())
{
thisByte = client.read();
Serial.write(thisByte);
}
client.stop();
Serial.println(F("Command disconnected"));
}