- Thu Jan 24, 2019 4:29 pm
#80257
Hello,
I am trying to do some datalogging with a NodeMCU and SPIFFS. I have a RTC to time stamp each entry which works properly. The next step I am trying to do is create a new file for each day. I found an example for using a variable as the file name on SD card.
SD card example
I have tried to modify it to work in SPIFFS as follows
When running the compiler I get error: expected ')' before 'filename'
fs::File f = SPIFFS.open("/"filename"", "a");
Am I wrong in how to call the variable "filename"? Any help would be appreciated.
Thanks
I am trying to do some datalogging with a NodeMCU and SPIFFS. I have a RTC to time stamp each entry which works properly. The next step I am trying to do is create a new file for each day. I found an example for using a variable as the file name on SD card.
SD card example
Code: Select all
#include <SD.h>
#include "RTClib.h"
#include <Wire.h>
#include <string.h>
RTC_DS1307 RTC;
char filename[] = "00000000.CSV";
File myFile;
void setup()
{
Serial.begin(9600);
Wire.begin(); //Important for RTClib.h
RTC.begin();
if (! RTC.isrunning()) {
Serial.println("RTC is NOT running!");
// following line sets the RTC to the date & time this sketch was compiled
// RTC.adjust(DateTime(__DATE__, __TIME__));
return;
}
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(4)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
}
void loop()
{
getFileName();
createFileName();
delay(3000);
}
void getFileName(){
DateTime now = RTC.now();
filename[0] = (now.year()/1000)%10 + '0'; //To get 1st digit from year()
filename[1] = (now.year()/100)%10 + '0'; //To get 2nd digit from year()
filename[2] = (now.year()/10)%10 + '0'; //To get 3rd digit from year()
filename[3] = now.year()%10 + '0'; //To get 4th digit from year()
filename[4] = now.month()/10 + '0'; //To get 1st digit from month()
filename[5] = now.month()%10 + '0'; //To get 2nd digit from month()
filename[6] = now.day()/10 + '0'; //To get 1st digit from day()
filename[7] = now.day()%10 + '0'; //To get 2nd digit from day()
Serial.println(filename);
}
void createFileName(){
//Check file name exist?
if (SD.exists(filename)) {
Serial.println("exists.");
}
else {
Serial.println("doesn't exist.");
Serial.println("Creating new file");
Serial.println(filename);
myFile = SD.open(filename, FILE_WRITE);
myFile.close();
}
}I have tried to modify it to work in SPIFFS as follows
Code: Select all
#define FS_NO_GLOBALS
#include <Wire.h>
#include "Adafruit_HTU21DF.h"
#include "FS.h"
#include "RTClib.h"
#include <string.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 = "*******";
uint32_t rate = 60;
uint32_t lastRead = 0;
char filename[] = "00000000.txt";
FtpServer ftpSrv; //set #define FTP_DEBUG in ESP8266FtpServer.h to see ftp verbose on serial
RTC_DS3231 rtc;
// 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)
Adafruit_HTU21DF htu = Adafruit_HTU21DF();
void setup() {
#ifndef ESP8266
while (!Serial); // for Leonardo/Micro/Zero
#endif
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);
}
if (! rtc.begin()) {
Serial.println("Couldn't find RTC");
while (1);
}
if (rtc.lostPower()) {
Serial.println("RTC lost power, lets set the time!");
// following line sets the RTC to the date & time this sketch was compiled
rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
// This line sets the RTC with an explicit date & time, for example to set
// January 21, 2014 at 3am you would call:
// rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
}
/////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() {
getFileName();
Serial.print (filename);
createFileName();
DateTime now = rtc.now();
if (now.unixtime() != 0){
if(now.unixtime() - lastRead > rate) {
Serial.print(now.month(), DEC);
Serial.print('/');
Serial.print(now.day(), DEC);
Serial.print('/');
Serial.print(now.year(), DEC);
Serial.print("-");
Serial.print(now.hour(), DEC);
Serial.print(':');
Serial.print(now.minute(), DEC);
Serial.print(':');
Serial.print(now.second(), DEC);
Serial.print("\tTemp:\t"); Serial.print(htu.readTemperature());
Serial.print("\t\tHum:\t"); Serial.println(htu.readHumidity());
fs::File f = SPIFFS.open("/"filename"", "a");
f.print(now.month(), DEC);
f.print('/');
f.print(now.day(), DEC);
f.print('/');
f.print(now.year(), DEC);
f.print("-");
f.print(now.hour(), DEC);
f.print(':');
f.print(now.minute(), DEC);
f.print(':');
f.print(now.second(), DEC);
f.print("\tTemp:\t"); f.print(htu.readTemperature());
f.print("\t\tHum:\t "); f.println(htu.readHumidity());
f.close();
lastRead = now.unixtime();
}
}
ftpSrv.handleFTP(); //make sure in loop you call handleFTP()!!
}
void getFileName(){
DateTime now = rtc.now();
filename[0] = (now.year()/1000)%10 + '0'; //To get 1st digit from year()
filename[1] = (now.year()/100)%10 + '0'; //To get 2nd digit from year()
filename[2] = (now.year()/10)%10 + '0'; //To get 3rd digit from year()
filename[3] = now.year()%10 + '0'; //To get 4th digit from year()
filename[4] = now.month()/10 + '0'; //To get 1st digit from month()
filename[5] = now.month()%10 + '0'; //To get 2nd digit from month()
filename[6] = now.day()/10 + '0'; //To get 1st digit from day()
filename[7] = now.day()%10 + '0'; //To get 2nd digit from day()
return filename;
}
void createFileName(){
fs::File f = SPIFFS.open("/"filename"", "a");
f.close();
}When running the compiler I get error: expected ')' before 'filename'
fs::File f = SPIFFS.open("/"filename"", "a");
Am I wrong in how to call the variable "filename"? Any help would be appreciated.
Thanks
