Need Help regarding SPIFFS
Posted: Sat Oct 14, 2017 7:45 amDear Friends
Good day to you, i am building a custom application that requires storing data in SPIFFS in string format, not json. because i am using a GPS module and storing a string into the file. the problem is i dont know how to read from the file.
the code is printing data in the file from serial port, and when i restart the esp it should pring the information in the file
could any one help me ?!
here is the code
waiting for your help guys
Good day to you, i am building a custom application that requires storing data in SPIFFS in string format, not json. because i am using a GPS module and storing a string into the file. the problem is i dont know how to read from the file.
the code is printing data in the file from serial port, and when i restart the esp it should pring the information in the file
could any one help me ?!
here is the code
Code: Select all
#include <FS.h>
const String FileName = "GPS_TEST.txt";
bool readFile(String FileName) {
File myFile = SPIFFS.open(FileName, "r");
if (!myFile) {
Serial.println("-> Couldn't Load The File");
return false;
} else {
Serial.println(myFile);
return true;
}
}
bool writeFile(String FileName, String Message) {
if(checkFile(FileName)) {
File myFile = SPIFFS.open(FileName, "w");
if(myFile) {
myFile.println(Message);
myFile.close();
return true;
}
} else {
return false;
}
}
bool checkFile(String FileName) {
if(SPIFFS.exists(FileName)) {
return true;
} else {
return false;
}
}
bool createFile(String FileName) {
File myFile = SPIFFS.open(FileName, "w");
if(myFile) {
myFile.close();
return true;
} else {
return false;
}
}
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println("");
Serial.println("");
SPIFFS.begin();
if(!checkFile(FileName)) {
Serial.println("The File Doesnt Exist !!!");
Serial.println("-> Creating File " + FileName);
if(createFile(FileName)) {
Serial.println("-> " + FileName + ", Created Successfully");
} else {
Serial.println("-> Couldn't Create " + FileName + " File");
}
} else {
Serial.println("The File : " + FileName + " Exist");
Serial.println("Reading " + FileName + " Content : ");
readFile(FileName);
}
}
void loop() {
if(Serial.available()) {
String Message = Serial.readString();
Message.trim();
if(writeFile(FileName, Message)) {
Serial.println("-> Successfully Printed A Message In " + FileName);
Serial.println("-> Message : " + Message + ".");
} else {
Serial.println("-> Failed To Print Message In File");
}
}
}
waiting for your help guys