arduino-esp32/libraries/LittleFS/examples/LITTLEFS_time/LITTLEFS_time.ino

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#include "FS.h"
//#include "SPIFFS.h"
#include "LittleFS.h"
#include <time.h>
#include <WiFi.h>
#define SPIFFS LittleFS
/* This examples uses "quick re-define" of SPIFFS to run
an existing sketch with LittleFS instead of SPIFFS
You only need to format LittleFS the first time you run a
test or else use the LittleFS plugin to create a partition
https://github.com/lorol/arduino-esp32littlefs-plugin */
#define FORMAT_LITTLEFS_IF_FAILED true
const char* ssid = "yourssid";
const char* password = "yourpass";
long timezone = 1;
byte daysavetime = 1;
void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
Serial.printf("Listing directory: %s\n", dirname);
File root = fs.open(dirname);
if(!root){
Serial.println("Failed to open directory");
return;
}
if(!root.isDirectory()){
Serial.println("Not a directory");
return;
}
File file = root.openNextFile();
while(file){
if(file.isDirectory()){
Serial.print(" DIR : ");
Serial.print (file.name());
time_t t= file.getLastWrite();
struct tm * tmstruct = localtime(&t);
Serial.printf(" LAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n",(tmstruct->tm_year)+1900,( tmstruct->tm_mon)+1, tmstruct->tm_mday,tmstruct->tm_hour , tmstruct->tm_min, tmstruct->tm_sec);
if(levels){
listDir(fs, file.path(), levels -1);
}
} else {
Serial.print(" FILE: ");
Serial.print(file.name());
Serial.print(" SIZE: ");
Serial.print(file.size());
time_t t= file.getLastWrite();
struct tm * tmstruct = localtime(&t);
Serial.printf(" LAST WRITE: %d-%02d-%02d %02d:%02d:%02d\n",(tmstruct->tm_year)+1900,( tmstruct->tm_mon)+1, tmstruct->tm_mday,tmstruct->tm_hour , tmstruct->tm_min, tmstruct->tm_sec);
}
file = root.openNextFile();
}
}
void createDir(fs::FS &fs, const char * path){
Serial.printf("Creating Dir: %s\n", path);
if(fs.mkdir(path)){
Serial.println("Dir created");
} else {
Serial.println("mkdir failed");
}
}
void removeDir(fs::FS &fs, const char * path){
Serial.printf("Removing Dir: %s\n", path);
if(fs.rmdir(path)){
Serial.println("Dir removed");
} else {
Serial.println("rmdir failed");
}
}
void readFile(fs::FS &fs, const char * path){
Serial.printf("Reading file: %s\n", path);
File file = fs.open(path);
if(!file){
Serial.println("Failed to open file for reading");
return;
}
Serial.print("Read from file: ");
while(file.available()){
Serial.write(file.read());
}
file.close();
}
void writeFile(fs::FS &fs, const char * path, const char * message){
Serial.printf("Writing file: %s\n", path);
File file = fs.open(path, FILE_WRITE);
if(!file){
Serial.println("Failed to open file for writing");
return;
}
if(file.print(message)){
Serial.println("File written");
} else {
Serial.println("Write failed");
}
file.close();
}
void appendFile(fs::FS &fs, const char * path, const char * message){
Serial.printf("Appending to file: %s\n", path);
File file = fs.open(path, FILE_APPEND);
if(!file){
Serial.println("Failed to open file for appending");
return;
}
if(file.print(message)){
Serial.println("Message appended");
} else {
Serial.println("Append failed");
}
file.close();
}
void renameFile(fs::FS &fs, const char * path1, const char * path2){
Serial.printf("Renaming file %s to %s\n", path1, path2);
if (fs.rename(path1, path2)) {
Serial.println("File renamed");
} else {
Serial.println("Rename failed");
}
}
void deleteFile(fs::FS &fs, const char * path){
Serial.printf("Deleting file: %s\n", path);
if(fs.remove(path)){
Serial.println("File deleted");
} else {
Serial.println("Delete failed");
}
}
void setup(){
Serial.begin(115200);
// We start by connecting to a WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
Serial.println("Contacting Time Server");
/*
Note: Bundled Arduino lwip supports only ONE ntp server, 2nd and 3rd options are silently ignored
see CONFIG_LWIP_DHCP_MAX_NTP_SERVERS define in ./tools/sdk/esp32/sdkconfig
*/
configTime(3600*timezone, daysavetime*3600, "time.nist.gov", "0.pool.ntp.org", "1.pool.ntp.org");
struct tm tmstruct ;
delay(2000);
tmstruct.tm_year = 0;
getLocalTime(&tmstruct, 5000);
Serial.printf("\nNow is : %d-%02d-%02d %02d:%02d:%02d\n",(tmstruct.tm_year)+1900,( tmstruct.tm_mon)+1, tmstruct.tm_mday,tmstruct.tm_hour , tmstruct.tm_min, tmstruct.tm_sec);
Serial.println("");
if(!SPIFFS.begin(FORMAT_LITTLEFS_IF_FAILED)){
Serial.println("LittleFS Mount Failed");
return;
}
Serial.println("----list 1----");
listDir(SPIFFS, "/", 1);
Serial.println("----remove old dir----");
removeDir(SPIFFS, "/mydir");
Serial.println("----create a new dir----");
createDir(SPIFFS, "/mydir");
Serial.println("----remove the new dir----");
removeDir(SPIFFS, "/mydir");
Serial.println("----create the new again----");
createDir(SPIFFS, "/mydir");
Serial.println("----create and work with file----");
writeFile(SPIFFS, "/mydir/hello.txt", "Hello ");
appendFile(SPIFFS, "/mydir/hello.txt", "World!\n");
Serial.println("----list 2----");
listDir(SPIFFS, "/", 1);
Serial.println("----attempt to remove dir w/ file----");
removeDir(SPIFFS, "/mydir");
Serial.println("----remove dir after deleting file----");
deleteFile(SPIFFS, "/mydir/hello.txt");
removeDir(SPIFFS, "/mydir");
Serial.println("----list 3----");
listDir(SPIFFS, "/", 1);
Serial.println( "Test complete" );
}
void loop(){
}