Problem in FS after updating the core

[lucasromeiro]

Hello, I'm using PlatformIO in its latest version.
I have now updated to use the Arduino 2.5.1 core to use ESP8266 12-F and now my code does not compile anymore!
Accuses error in FS.
I do not understand why. It worked before updating.
I can not find the problem.
Can someone help me?

Thank you

[lucasromeiro]

core 2.4.2 work fine:
platform = espressif8266@1.8.0

core 2.5.1 don't work:
platform = espressif8266

why??

[ivankravets]

Unification of SPIFFS and SD, into single compatible FS, File, and Dir objects

See esp8266/Arduino#5525

@earlephilhower do you have any migrating guide?

[earlephilhower]

There is no migration. They are compatible AFAIK and per many other users and the original SD.h examples, even.

[ivankravets]

@lucasromeiro could you share a simple project to reproduce this issue?

[lucasromeiro]

@lucasromeiro could you share a simple project to reproduce this issue?

Sure!

#include "Arduino.h"
#include <ESP8266WiFi.h>
#include <FS.h> //Biblioteca responsável por criar o Sistema de manipulação de arquivos

void setup() {
SPIFFS.begin(); //Inicializa sistema de arquivos
}

void loop() {

File carregaArquivos = SPIFFS.open("/log.txt", "a");
char charState = '1';
carregaArquivos.write(charState);
carregaArquivos.close();
}

[earlephilhower]

fs::write takes a pointer and length, or a c-string, or a String, not a char.

[lucasromeiro]

fs::write takes a pointer and length, or a c-string, or a String, not a char.

If I use String it also does not work!
String charState = "1";

[lucasromeiro]

I do not understand why this worked in the previous version and now it does not work.

[earlephilhower]

Actually, I think I see the issue.

FS::File never had a File::write(char) method, but it did have a File::write(uint8_t) method. Print(the superclass of File) never supported Print::write(char).

So in the old versions you were getting silent conversions of char->uint8_t (I think you'll get a warning if you go strict enough).

Now, since your call doesn't match any exactly, it is using the template which is for writing Stream children, only.

[earlephilhower]

Try the change in esp8266/Arduino#6101 . I'm not sure if it will break anything else, but it re-enabled the usage.

[lucasromeiro]

Actually, I think I see the issue.

FS::File never had a File::write(char) method, but it did have a File::write(uint8_t) method. Print(the superclass of File) never supported Print::write(char).

So in the old versions you were getting silent conversions of char->uint8_t (I think you'll get a warning if you go strict enough).

Now, since your call doesn't match any exactly, it is using the template which is for writing Stream children, only.

Got it, so if I switch char to uint8_t it should work the same, right?
I'll try.

[lucasromeiro]

Actually, I think I see the issue.

FS::File never had a File::write(char) method, but it did have a File::write(uint8_t) method. Print(the superclass of File) never supported Print::write(char).

So in the old versions you were getting silent conversions of char->uint8_t (I think you'll get a warning if you go strict enough).

Now, since your call doesn't match any exactly, it is using the template which is for writing Stream children, only.

Its work!

uint8_t charState = '1';

Thanks!