ESP8266 Community Forum

- Mon Aug 10, 2020 7:30 pm #88264 In the following sketch I am trying to make write/read from spiffs a subroutine.
But I keep getting errors
ssidx is a string/variable I want to save in filex.txt then later read back and save to sdatax string variable
I want to save/return maybe 10 different saved different variables.

Code: Select all#include <FS.h>
String sdatax ="";
String ssidx="192.168.0.105";
void setup(){
 Serial.begin(115200);
 Serial.println();
 bool success = SPIFFS.begin();
 if (!success){Serial.println("Error mountingthe file system"); return;}
write2_spiffs();
read2_spiffs();
}
void read2_spiffs(){
 File file2 = SPIFFS.open("/filex.txt", "r");
 if (!file2){ Serial.println("failed to open file for reading");return;}
 sdatax = file2.readString();
 file2.close();
 Serial.println(sdatax);
 }
void write2_spiffs(){
 File file = SPIFFS.open("/filex.txt", "w");
 if (!file) {Serial.println("Error opening file for writing");return;}
 int bytesWritten = file.print(ssidx);
 if (bytesWritten ==0){Serial.println("File write failed");return;}
 file.close();
}
 void loop()
{
}


- Tue Aug 11, 2020 3:27 am #88269 Your code runs fine here.

Can you describe the problem you have.